Bartell BM120 User manual

WALK-BEHIND
POWER TROWELS
Doc. # OI-B09037
Orig. Rel. - 06-2012
Curr. Rev. - 01
Rev. Date - 08-2012
BM120
BM446

Bartell Morrison Inc. Bartell Morrison (USA) LLC
375 Annagem Blvd. 12 Industrial Drive,
Mississauga, Ontario, Canada Keyport, New Jersey, USA
L5T 3A7 07735
Toll Free (N.A.): [phone] Toll Free: 888-999-1570
Phone: [phone] Phone: [phone]
Facsimile: [phone] Facsimile: [phone]
www.bartellmorrison.com www.bmiamerica.com
ORIGINAL LANGUAGE OPERATING INSTRUCTIONS FOR
BARTELL WALK-BEHIND POWER TROWELS
© 2010 Bartell Morrison Inc.
No part of this work may be reproduced or transmitted in any
form or by any means, electronic or mechanical, including
photocopying and recording, or by any information storage or
retrieval system without the prior written permission of Bartell
Morrison Inc. unless such copying is permitted by federal
copyright laws.
Address inquiries or reference permissions care of:
Bartell Morrison Inc.,
375 Annagem Blvd.,
Mississauga, Ontario,
Canada, L5T 3A7
Revision Date Description Approved by.
0 05/2010 Initial release RL
25
06/2012 Initial Release AL
08/2012 Throttle assembly updated. AL 01
00

WALK BEHIND POWER TROWEL INSTRUCTION MANUAL
375 ANNAGEM BLVD., MISSISSAUGA, ONTARIO, CANADA L5T 3A7, 905-364-4200 FAX [phone]
CREATED: 07/04
REVISED: 05/10
SAFETY PRECAUTIONS
DANGER
EXPLOSION HAZARD
Never operate the machine in an
explosive atmosphere, near
combustible materials or where
ventilation does not clear exhaust
fumes.
WARNING
BURN HAZARD
Never come into contact with the
engine or muffler when engine is
operating or shortly after it is
turned off. Serious burns may
occur.
CAUTION
ROTATING HAZARD
Never place hands or feet inside
safety guard rings. Serious injury
will result from contact with rotating
blades.
CAUTION
MOVING PARTS
Before starting the machine ensure
that all guards and safety devices
are in place and functioning
properly.
ATTENTION
READ OWNERS MANUAL
Read and understand operator's
manual before using this machine.
Failure to follow operating
instructions could result in serious
injury or death.
!
!
!
!
CREATED: 06/12

WALK BEHIND POWER TROWEL INSTRUCTION MANUAL
TABLE OF CONTENTS
QUALITY ASSURANCE/MACHINE BREAK-IN .......................................................................................................4
WALK-BEHIND POWER TROWEL WARRANTY ....................................................................................................5
MAINTENANCE RECORD ........................................................................................................................................6
ROUTINE SERVICE INTERVALS .............................................................................................................................7
FOREWORD..............................................................................................................................................................9
SAFETY PRECAUTIONS ..........................................................................................................................................9
ASSEMBLY INSTRUCTIONS ...................................................................................................................................9
1. TROWELS .............................................................................................................................................................9
2. STABILIZER RING.................................................................................................................................................9
3. HANDLE ASSEMBLY ............................................................................................................................................9
4. STATIONARY RING ..............................................................................................................................................9
5. ENGINE CONTROLS ............................................................................................................................................9
6. BELT GUARD ........................................................................................................................................................9
DIAGRAM 1 .............................................................................................................................................................10
OPERATION (FLOATING) ......................................................................................................................................11
OPERATION (FINSHING) .......................................................................................................................................11
1. STARTING PROCEDURES - WARM TEMPERATURES ...................................................................................11
2. STARTING PROCEDURES - COLD TEMPERATURES.....................................................................................11
3. STOPPING PROCEDURES ................................................................................................................................11
LUBRICATION ........................................................................................................................................................11
1. ENGINE OIL.........................................................................................................................................................11
2. SPIDER PLATE ...................................................................................................................................................11
3. GEARBOX ...........................................................................................................................................................11
4. GEARBOX OIL CHANGE ....................................................................................................................................11
5. GREASE FITTINGS.............................................................................................................................................11
ENGINE OIL SPECIFICATIONS..............................................................................................................................11
STORAGE................................................................................................................................................................12
MAINTENANCE.......................................................................................................................................................12
1. AIR CLEANER .....................................................................................................................................................12
2. LUBRICATION .....................................................................................................................................................12
3. SPARK PLUG ......................................................................................................................................................12
4. BELT TENSION ...................................................................................................................................................12
ELECTRIC POWER TROWEL OPERATION..........................................................................................................13
SETTING UP THE ELECTRIC POWER TROWEL .................................................................................................14
STARTING THE ELECTRIC POWER TROWEL ....................................................................................................14
ELECTRIC POWER TROWEL WIRING DIAGRAM ...............................................................................................16
TROWEL ARM ADJUSTMENT FIXTURE ..............................................................................................................17
1. ADJUSTMENT PROCEDURE.............................................................................................................................17
TROUBLESHOOTING.............................................................................................................................................18
SPECIFICATIONS ...................................................................................................................................................19
COMPANY INFORMATION ....................................................................................................................................20
NOTES.....................................................................................................................................................................22
375 ANNAGEM BLVD., MISSISSAUGA, ONTARIO, CANADA L5T 3A7, 905-364-4200 FAX [phone]
CREATED: 07/04
REVISED: 05/10
QUALITY ASSURRANCE MACHINE BREAK-IN ...................................................................................................
WALK-BEHIND POWER TROWEL WARRANTY ...................................................................................................
MAINTENANCE RECORD ......................................................................................................................................
ROUTINE SERVICE INTERVALS ...........................................................................................................................
SAFETY PRECAUTIONS ........................................................................................................................................
ASSEMBLY INSTRUCTIONS .................................................................................................................................
1. TROWELS ...........................................................................................................................................................
2. STABILIZER RING ...............................................................................................................................................
3. HANDLE ASSEMBLY ..........................................................................................................................................
4. STATIONARY RING ............................................................................................................................................
5. ENGINE CONTROLS ..........................................................................................................................................
6. BELT GUARD ......................................................................................................................................................
DIAGRAM 1 .............................................................................................................................................................
OPERATION (FLOATING) ......................................................................................................................................
OPERATION (FINISHING) ......................................................................................................................................
1. STARTING PROCEDURES - WARM TEMPERATURES ....................................................................................
2. STARTING PROCEDURES - COLD TEMPERATURES .....................................................................................
3. STOPPING PROCEDURES ................................................................................................................................
LUBRICATION ........................................................................................................................................................
1. ENGINE OIL ........................................................................................................................................................
2. SPIDER PLATE ...................................................................................................................................................
3. GEARBOX ...........................................................................................................................................................
4. GEARBOX OIL CHANGE ....................................................................................................................................
5. GREASE FITTINGS ............................................................................................................................................
ENGINE OIL SPECIFICATION ................................................................................................................................
STORAGE ...............................................................................................................................................................
MAINTENANCE ......................................................................................................................................................
1. AIR CLEANER .....................................................................................................................................................
2. LUBRICATION .....................................................................................................................................................
3. SPARK PLUG ......................................................................................................................................................
4. BELT TENSION ...................................................................................................................................................
PARTS MANUAL (BM120/BM446) .........................................................................................................................
HANDLE AND CLUTCH ASSEMBLIES (BM120/BM446) ........................................................................................
GEARBOX ASSEMBLY ............................................................................................................................................
SPIDERPLATE ASSSEMBLY ...................................................................................................................................
TROUBLESHOOTING .............................................................................................................................................
SPECIFICATIONS ...................................................................................................................................................
COMPANY INFORMATION .....................................................................................................................................
NOTES .....................................................................................................................................................................
4
5
6
7
9
9
9
9
9
9
9
9
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11
11
11
11
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CREATED: 06/12

WALK BEHIND POWER TROWEL INSTRUCTION MANUAL
QUALITY ASSURANCE / MACHINE BREAK IN
The Bartell Walk-Behind Power Trowel is the product of extensive engineering
development designed to give long life and unmatched performance. The Walk-Behind
Power Trowels are shipped partially assemble, and only require filling with fuel and a brief
check of lubricant levels in preparation for operation.
You can help ensure that your Power Trowel will perform at top levels by observing a
simple routing on first use. Consider that your new Power Trowel is like a new car. Just
as you would break in a new car to the road or any new machine to the job, you should
start gradually and build up to full use. Learn what your machine can do and how it will
respond. Refer to the engine manufacturer’s manual for run-in times. Full throttle and
control may be used after this time period, as allowed by material. This will serve to
further break in the machine on your specific application, as well as provide you with
additional practice using the machine.
We thank you for the confidence you have placed in us by purchasing a Bartell Walk-
Behind Power Trowel and wish you many years of satisfied use.
artell
4
375 ANNAGEM BLVD., MISSISSAUGA, ONTARIO, CANADA L5T 3A7, 905-364-4200 FAX [phone]
CREATED: 07/04
REVISED: 05/10
CREATED: 06/12
4

WALK BEHIND POWER TROWEL INSTRUCTION MANUAL
WALK-BEHIND POWER TROWEL WARRANTY
All products sold by Bartell Morrison Inc. and Bartell Morrison (USA) LLC (the “Company”) are warranted
against defects in materials and/or workmanship; excluding normal wear on wearing components and
components covered by a separate original manufacturers warranty, for a period of 24 months from the
date of sale to the original end user purchaser provided that certain conditions have been met.
Conditions:
1. The equipment serial number has been registered with the Company or its approved dealers,
distributors, representatives or agents.
2. The equipment has been operated in an appropriate manner by qualified individuals.
3. The equipment has been properly maintained as per the instructions included in the Owner’s
Manual.
4. All claims for warranty must be filed on proper forms and include the serial number of the
equipment along with proof of purchase.
Any evidence of failure to meet these conditions may result in a denial of the warranty claim.
Consideration of warranty claims will be at the sole discretion of the Company, or its authorized dealers,
distributors, representatives or agents.
The Company may, at its discretion, request that the equipment to be considered for warranty be returned
at the owner’s expense to an authorized repair facility for inspection.
Under this warranty we may, at our discretion, repair or replace a part or the whole of the defective
component or equipment.
Our Warranty coverage is limited to the cost to repair or replace the defective portion of the equipment and
a reasonable (as determined by the Company) amount of labour to conduct the repair or replacement.
Under no circumstances shall the Company be liable for any additional or exceptional costs beyond the
cost to repair or replace the defective portion of the equipment. The Company shall not be held
accountable for; costs associated with travel to inspect or repair defective equipment, costs for transporting
defective equipment to or from an authorized repair facility, costs incurred to repair or replace the defective
equipment at any facility other than one authorized by the Company or ancillary damage caused by or as a
result of the defective equipment.
Under no circumstances shall equipment be returned to the Company or its authorized dealers, distributors,
representatives or agents without the approval of the Company as evidenced by a Returned Goods
Number. To obtain a Returned Goods Number contact the factory or your authorized dealer, distributor,
representative or agent.
This warranty is for the sole benefit of the original end user purchaser and is not transferable to any other
company or person.
5
375 ANNAGEM BLVD., MISSISSAUGA, ONTARIO, CANADA L5T 3A7, 905-364-4200 FAX [phone]
CREATED: 07/04
REVISED: 05/10
CREATED: 06/12
5
12

WALK BEHIND POWER TROWEL INSTRUCTION MANUAL
MAINTENANCE RECORD
PREVENTATIVE MAINTENANCE AND ROUTINE SERVICE PLAN
This Walk-Behind Power Trowel has been assembled with care and will provide years of service. Preventative
maintenance and routine service are essential to the long life of your Power Trowel. Your dealer is interested in
your new machine and has the desire to help you get the most value from it. After reading through this manual
thoroughly, you will find that you can do some of the regular maintenance yourself. However, when in need of parts
or major service, be sure to see your Bartell dealer. For your convenience we have provided this space to record
relevant data about your Walk-Behind Power Trowel. When in need of parts or service be prepared to provide your
Trowel serial number. Locate the serial number now and record in the space below.
Date Purchased:
Type of Machine:
Dealer Name: Model:
Dealer Phone: Serial Number:
REPLACEMENT PARTS USED MAINTENANCE LOG
PART NO. QUANTITY COST DATE DATE OPERATION
6
375 ANNAGEM BLVD., MISSISSAUGA, ONTARIO, CANADA L5T 3A7, 905-364-4200 FAX [phone]
CREATED: 07/04
REVISED: 05/10
CREATED: 06/12
6

WALK BEHIND POWER TROWEL INSTRUCTION MANUAL
Routine Service
Intervals
Each
use
After 1.5
months
or
50 hrs
Each 3
months
or
100 hrs
Each 6
months
or
200 hrs
Each 9
months
or
300 hrs
Each 12
months
or
400 hrs
General Inspection:
Guards Check o o o o o
Warning stickers Check o o o o o
Test run: Check operation o o o o o
Controls:
Dead-man switch operation Check o o o o o o
Check o o o o o o
Pitch control
Lubricate o o o o o
Engine:
Check Level o o o o o o
Engine oil
Change o o o
Engine oil filter Replace o o
Oil cooler Clean o o o o
Cooling Fins Clean o o o o o
Check - clean o o o o o o
Air cleaner
Replace o
Check o
Air Intake Line
Replace 2 yrs
Check tightness o o
Drive Belt
Replace 500 hrs
Valve clearance Check-adjust o o
Check & Clean o o o o
Fuel filter
Replace o o
Fuel Tank Clean 500 hrs
Engine wiring Check o
7
375 ANNAGEM BLVD., MISSISSAUGA, ONTARIO, CANADA L5T 3A7, 905-364-4200 FAX [phone]
CREATED: 07/04
REVISED: 05/10
CREATED: 06/12
7

WALK BEHIND POWER TROWEL INSTRUCTION MANUAL
Routine Service Intervals
Due to the nature and environment of use, Walk-Behind Power Trowels could be exposed to severe
operating conditions. Some general maintenance guidelines will extend the useful life of your trowel.
The initial service for your power trowel should be performed after 25 hours of use, at which time your
mechanic (or authorized repair shop) should complete all of the recommended checks in the schedule
above. The chart on page 6 (six) is handy for keeping a record of the maintenance performed and the parts
used for servicing your trowel.
Regular service according to the schedule above will prolong the life of the Walk-Behind Power Trowel and
prevent expensive repairs.
Keeping your Walk-Behind Power Trowel clean and free from debris is the single most important regular
maintenance operation, over and above the checks in the service schedule above, that can be performed.
After each use your Walk-Behind Power Trowel should be cleaned to remove any dust and debris from the
undercarriage and surrounding components. Use of a power washer will make clean up quick and easy,
especially if a non-stick coating was applied prior to use.
In the Service Schedule above, items that should be checked, replaced or adjusted are indicated by “o” in
the appropriate column. Not all Walk-Behind Power Trowel models include the same features and options
and as such not all service operations may have to be performed. For ease of recording place a checkmark
(√ ) through the “o” when the item is complete. If an item is not required or not completed place an “x”
through the “o” in the box.
All Walk-Behind Power Trowels have governed engine speed of 3600 rpm. See engine manufacturer’s
manual for exact specifications. Care should be used when making any adjustments to the Walk-Behind
Power Trowel not to change the governed speed.
Failure to have your Walk-Behind Power Trowel regularly serviced and properly maintained in accordance
with the manufacturer’s instructions will lead to premature failure and void the warranty.
8
artell
375 ANNAGEM BLVD., MISSISSAUGA, ONTARIO, CANADA L5T 3A7, 905-364-4200 FAX [phone]
CREATED: 07/04
REVISED: 05/10
CREATED: 06/12
8

WALK BEHIND POWER TROWEL INSTRUCTION MANUAL
SAFETY PRECAUTIONS
Always keep unauthorized, inexperienced, untrained
people away from this machine.
Rotating and moving parts will cause injury if
contacted. Make sure guards are in place. Keep
hands and feet away from moving parts.
Fuel the machine only when the engine is stopped,
using all necessary safety precautions.
The engine must always be stopped before
attempting any repair or adjustments. Ignition switch
should be off.
Be careful not to come in contact with the muffler
when the engine is hot, serious burns may result!
ASSEMBLY INSTRUCTIONS
Your new Bartell Walk-Behind Power Trowel has been
shipped to you partially assembled. Filling the fuel tank
and a brief check of lubricant levels in preparation for
operation is required. To complete the assembly the
following instructions will be helpful.
1. TROWELS – Attach trowel blades with screws and
lock washers supplied. See (A) and (B) Fig. 1. Be
careful that adjusting screw (C) does not protrude
below arm when attaching blades. This could cause
the machine to jump and promote excessive wear in
operation.
2. STABILIZER RING – (if supplied) Install using
screws, bushings and lock washers supplied. See
Fig. 1 (D)
3. HANDLE ASSEMBLY – Put cable end Fig. 2 (A)
through hole in yoke (B) and secure with nut (C),
then install handle bracket on gearbox. To get
proper cable tension, turn control knob Fig. 3,
counter-clockwise to stop position. Guide screw (B)
will now be at the bottom slot. Tighten nut Fig. 4 (A)
until slack is removed from point (B) as indicated. If
more than 2 or 3 threads show through, then nut
should be turned back.
Guide screw, Fig. 3 (B) should be moved to next
lower hole in slide bushing and cable re-adjusted as
above. Turn hand knob completely clockwise and
check for clearance between yoke and gearbox at
point (C) Fig. 4. There should be enough space to
pass a business card through.
4. STATIONARY RING – Install stationary ring as
shown in Fig. 5 with the side bar on engine recoil
side. (May not be exactly as shown). Install rubber
bushings (A) on top and bottom of mounting plate.
Install metal caps (B). Place ring on top and run
screw (C) through caps and rubbers. Tighten lock nut
(D) securely on bottom. It is best to start nuts on all 4
corners before tightening.
5. ENGINE CONTROLS – Attach throttle control to
handle with screws provided. See DIAGRAM 1 below
for your engine model hook-up. For safety switch
connection, attach wire to terminal provided at
“ON/OFF” location.
The throttle cable must be cut and formed to fit. Feed
the cable through the cable clamp on the engine. Pull
the cable through the clamp until it forms a smooth
arc from the handle to the engine. Mark the cable at
the clamp and pull the cable back from the casing at
the throttle. Without cutting the cable, Cut casing at
the mark and push the cable back through fresh cut
end. Form a small “L” bend in the cable, hook the
inner cable into the throttle block and tighten cable
clamp down onto the casing. With thumb lever and
throttle block in the fully open position, cut the inner
cable by the thumb lever, leaving enough wire
exposed to secure to the lever. Insert the cable into
the fitting and tighten the screw. Restore throttle to
idle position.
6. BELT GUARD – Install after machine has been
tested, taking care that it does not touch clutch or
pulley.
9
DANGER:
Never operate the machine in an explosive
atmosphere, near combustible materials or where
ventilation does not clear exhaust fumes. Repair
fuel leaks immediately. Refer to your engine
owner’s manual for more safety instructions.
IMPORTANT:
Before running machine with belt installed, ensure
that engine idles properly and that the safety -switch
shuts off the engine.
ATTENTION:
For any information regarding engine adjustments,
please refer to the engine manual supplied.
375 ANNAGEM BLVD., MISSISSAUGA, ONTARIO, CANADA L5T 3A7, 905-364-4200 FAX [phone]
CREATED: 07/04
REVISED: 05/10
CREATED: 06/12
9

10
DIAGRAM 1
Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
WALK-BEHIND TROWEL INSTRUCTION MANUAL
375 ANNAGEM BLVD., MISSISSAUGA, ONTARIO, CANADA L5T 3A7, 905-364-4200 FAX [phone]
CREATED: 07/04
REVISED: 05/10
CREATED: 06/12
10

WALK BEHIND POWER TROWEL INSTRUCTION MANUAL
OPERATION (Floating)
When the slab has set sufficiently firm that the
operator’s footprint leaves a very slight depression on
the surface of the slab, it is ready for the floating
operation.
Under normal operating conditions the machine should
cover as much as 1000 sq. ft. in about 15 minutes. It is
recommended that a slight tension on the trowel control
cable, (but not a definite tilt), during the floating
operation will cause the machine to operate much
smoother. After the floated slab has set sufficiently, it is
ready for the finishing operation.
OPERATION (Finishing)
When starting the finishing operation, never set the
trowels up over 1/4” pitch. This is important. Guiding the
machine on the slab is very simple, a slight upward lift of
the handle causes the machine to travel to the left.
Holding the handle in the neutral position, will slowly
cause the machine to spin in one spot. Slight downward
pressure on the handle causes the machine to travel to
the right. Best results are obtained by covering
approximately 4” on each turn. In other words, let the
machine move right or left, backwards or forwards,
approximately 4” with each revolution of the trowels. To
fill a hole or cut down a hump, move the unit back and
forth over the problem area.
After the first pass over the slab, the waiting time
between operations is determined in the same manner
as if you were hand troweling. To repeat; the entire
application and action of the troweling machine in regard
to getting on the slab, and the correct pitch of the
trowels, is determined in the same manner as would be
used by a cement finisher when troweling by hand.
STARTING PROCEDURE: *WARM CLIMATE
Open fuel valve on gas tank. Set throttle lever to “Fast”
idle position, set choke to closed position, start engine.
Open choke slightly to prevent flooding. Move to “Open”
or “Run” position when engine is warm, increase throttle
to maximum operation position (3600 rpm).
STARTING PROCEDURE: *COLD CLIMATE
Follow same procedure as above but allow longer
warm-up period – 3 to 5 minutes. In cold weather, oil is
much heavier to move and requires more time to work
its way into the moving parts. If maximum power is not
attained, allow further warm-up time. Fill fuel tank with
clean gasoline, use safety approved gas containers.
DO NOT MIX OIL WITH GASOLINE – USE UNLEADED
GAS ONLY.
STOPPING PROCEDURE
1. Throttle engine down.
2. Turn off stop switch.
LUBRICATION
1. ENGINE OIL
The long life and successful operation of any piece of
machinery is dependent on frequent and thorough
lubrication.
Before using the trowel, always check your engine for
oil. Use proper engine oil as recommended in the
engine manufacturer’s manual. Fill crankcase to
levels as recommended.
ENGINE OIL SPECIFICATIONS
2. SPIDER PLATE
There are 4 (four) grease fittings on the spider plate,
each must be greased daily. THE SPIDER PLATE
MUST BE GREASED EVERY TIME MACHINE IS
USED.
3. GEARBOX
Check the oil level sight plugs on both gearboxes
daily to ensure the oil is half way on the site glass.
Top up with Agma 8 compounded gear oil only.
Gearbox capacity 16 oz. to 19 oz. (473ml. To 562ml.)
Example: Esso/Exxon Cylesstic TK680.
4. TO CHANGE GEARBOX OIL
Place a pan beneath the drain plug to catch the oil.
Remove the drain plug and the filler plug from the
gearbox. After the oil has drained completely, replace
the drain plug and tighten. Fill the gearbox through
the filler plug with 16 oz. to 19 oz. (473ml. To 562ml.)
of Agma 8 compounded gear oil. Replace the filler
plug and tighten.
11
CAUTION:
Do not let the machine stand in one spot on the
soft cement. Lift from the slab when the floating
operation is complete.
375 ANNAGEM BLVD., MISSISSAUGA, ONTARIO, CANADA L5T 3A7, 905-364-4200 FAX [phone]
CREATED: 07/04
REVISED: 05/10
WALK BEHIND POWER TROWEL INSTRUCTION MANUAL
OPERATION (Floating)
When the slab has set sufficiently firm that the
operator’s footprint leaves a very slight depression on
the surface of the slab, it is ready for the floating
operation.
Under normal operating conditions the machine should
cover as much as 1000 sq. ft. in about 15 minutes. It is
recommended that a slight tension on the trowel control
cable, (but not a definite tilt), during the floating
operation will cause the machine to operate much
smoother. After the floated slab has set sufficiently, it is
ready for the finishing operation.
OPERATION (Finishing)
When starting the finishing operation, never set the
trowels up over 1/4” pitch. This is important. Guiding the
machine on the slab is very simple, a slight upward lift of
the handle causes the machine to travel to the left.
Holding the handle in the neutral position, will slowly
cause the machine to spin in one spot. Slight downward
pressure on the handle causes the machine to travel to
the right. Best results are obtained by covering
approximately 4” on each turn. In other words, let the
machine move right or left, backwards or forwards,
approximately 4” with each revolution of the trowels. To
fill a hole or cut down a hump, move the unit back and
forth over the problem area.
After the first pass over the slab, the waiting time
between operations is determined in the same manner
as if you were hand troweling. To repeat; the entire
application and action of the troweling machine in regard
to getting on the slab, and the correct pitch of the
trowels, is determined in the same manner as would be
used by a cement finisher when troweling by hand.
STARTING PROCEDURE: *WARM CLIMATE
Open fuel valve on gas tank. Set throttle lever to “Fast”
idle position, set choke to closed position, start engine.
Open choke slightly to prevent flooding. Move to “Open”
or “Run” position when engine is warm, increase throttle
to maximum operation position (3600 rpm).
STARTING PROCEDURE: *COLD CLIMATE
Follow same procedure as above but allow longer
warm-up period – 3 to 5 minutes. In cold weather, oil is
much heavier to move and requires more time to work
its way into the moving parts. If maximum power is not
attained, allow further warm-up time. Fill fuel tank with
clean gasoline, use safety approved gas containers.
DO NOT MIX OIL WITH GASOLINE – USE UNLEADED
GAS ONLY.
STOPPING PROCEDURE
1. Throttle engine down.
2. Turn off stop switch.
LUBRICATION
1. ENGINE OIL
The long life and successful operation of any piece of
machinery is dependent on frequent and thorough
lubrication.
Before using the trowel, always check your engine for
oil. Use proper engine oil as recommended in the
engine manufacturer’s manual. Fill crankcase to
levels as recommended.
ENGINE OIL SPECIFICATIONS
2. SPIDER PLATE
There are 4 (four) grease fittings on the spider plate,
each must be greased daily. THE SPIDER PLATE
MUST BE GREASED EVERY TIME MACHINE IS
USED.
3. GEARBOX
Check the oil level sight plugs on both gearboxes
daily to ensure the oil is half way on the site glass.
Top up with Agma 8 compounded gear oil only.
Gearbox capacity 16 oz. to 19 oz. (473ml. To 562ml.)
Example: Esso/Exxon Cylesstic TK680.
4. TO CHANGE GEARBOX OIL
Place a pan beneath the drain plug to catch the oil.
Remove the drain plug and the filler plug from the
gearbox. After the oil has drained completely, replace
the drain plug and tighten. Fill the gearbox through
the filler plug with 16 oz. to 19 oz. (473ml. To 562ml.)
of Agma 8 compounded gear oil. Replace the filler
plug and tighten.
11
CAUTION:
Do not let the machine stand in one spot on the
soft cement. Lift from the slab when the floating
operation is complete.
375 ANNAGEM BLVD., MISSISSAUGA, ONTARIO, CANADA L5T 3A7, 905-364-4200 FAX [phone]
CREATED: 07/04
REVISED: 05/10
SAE 10W-30
All Seasons
CREATED: 06/12
11

WALK BEHIND POWER TROWEL INSTRUCTION MANUAL
STORAGE
The following steps should be taken to prepare your
Walk-Behind Power Trowel for extended storage.
1. Close fuel shut off valve.
2. Siphon excess gasoline from tank.
3. Start engine until it stops from lack of fuel. This will
use up all the fuel in the carburetor and prevent
formation of deposits due to evaporation of fuel.
4. Remove spark plug and pour 2 oz. of SAE
10W 30 motor oil into the cylinder. Slowly crank the
engine 2 or 3 times to distribute the oil throughout
the cylinder. This will help prevent rust during
storage. Replace spark plug.
5. Store the unit in an upright position in a cool, dry,
well ventilated area.
MAINTENANCE
Maintaining your Walk-Behind Power Trowel will insure
long life to the machine and its components.
AIR CLEANER - Keep air filter clean at all times. Wash
away dust and debris using a non-oil based cleaning
solvent. Let the filter dry before re-installing.
LUBRICATION – Check engine oil regularly. Use
proper engine oil as recommended. See previous
chart. Fill crankcase to levels as recommended in
manufacture’s engine manual.
SPARK PLUG – Check and clean spark plugs
regularly. A fouled, dirty or carboned spark plug causes
hard starting and poor engine performance. Set spark
plug gap to recommended clearance. Refer to engine
manual.
BELT TENSION – IMPORTANT!
If there is excessive belt play, there will be a decrease
in the power transmission capability which could lead to
premature wear and failure of the belt. The normal belt
play should be 1/2” to 5/8” which is attained by
depressing one side of the belt at the mid-point of the
span between pulleys. Tighten all engine mount
fasteners.
CHART FOR MINIMUM WIRE SIZE OF EXTENSION CORD
Nameplate AMPS CORD LENGTH
25’ 50’ 100’ 150’
0-6 18 AWG 16 AWG 16 AWG 14 AWG
6-10 18 AWG 16 AWG 14 AWG 12 AWG
10-12 16 AWG 16 AWG 14 AWG 12 AWG
12-16 14 AWG 12 AWG (NOT RECOMMENDED)
12
375 ANNAGEM BLVD., MISSISSAUGA, ONTARIO, CANADA L5T 3A7, 905-364-4200 FAX [phone]
CREATED: 07/04
REVISED: 05/10
CREATED: 06/12
12

WALK BEHIND POWER TROWEL INSTRUCTION MANUAL
The trowel arm adjustment fixture (20801) is reversible.
By rotating the arm clamping fixture and the ring bolt,
both left hand and right hand trowel arms may be
adjusted. Before attempting adjustment, determine
whether the trowel arm is right handed or left handed.
When adjusting left hand trowel arms use the side of the
fixture marked “L”. When adjusting right hand trowels
arms use the opposite side. The adjustment bar will be
set on “36” for the Walk-behind trowel arm.
ADJUSTMENT PROCEDURE
1. Remove all trowel arm assemblies (1 & 2 arm and
attached lift lever) from suspected maladjusted spider
plate.
2. Remove lift lever (2) from trowel arm (1) by first
loosening jam nut (3) then square head screw (4). If
upon inspection (method left to discretion of
serviceman) any trowel arm (1) is found to be in a
bent condition, it must either be brought back to its
original straight condition (method left to the
serviceman’s discretion) or replaced with new part.
3. Replace lift levers (2) on new or straightened arms
(1) by reversing procedure as described above.
4. Place trowel arm assembly (1 and 2) in fixture (5)
with lift lever (2) butting up against fixture. Clamp in
place with bolts (6).
5. Loosen locknut (7) and screw carriage bolt (8) down
to full depth allowable. This will provide for ample
clearance to swing precision ground adjustment bar
(9) over head of carriage bolt.
Adjustment bar (9) is stamped for appropriate size of
machine. Swing appropriate side directly over carriage
bolt (8) and secure in place with bolt (10).
6. Adjust carriage bolt (8) upwards until contact is made
with adjustment bar (9); holding carriage bolt in
position with one wrench, tighten locknut (7) to secure
in position with second wrench.
7. This same procedure is to be followed with ALL arms
from spider plate assembly, and will ensure correct
and exact adjustment.
TROWEL ARM ADJUSTMENT SCREW
The trowel arm adjustment screw is to be used for field
adjustment of blade level, in the event of a damaged
trowel arm, to enable completion of the job. At the end of
the job repairs should be made to eliminate the damage.
When assembling trowel blades to trowel arms, the
adjustment screw should NEVER protrude below the
under-side surface of a trowel arm.
If the adjustment screw is not flush with the underside of
the trowel arm, then this will cause the power trowel to
bounce and vibrate especially at high speed. This will
also cause the trowel blades to leave an uneven finish to
the concrete due to the blades not being level to one
another.
Make certain that the adjusting screw is held firmly in
place while tightening the bolt which secures the blade to
the trowel arm.
17
375 ANNAGEM BLVD., MISSISSAUGA, ONTARIO, CANADA L5T 3A7, 905-364-4200 FAX [phone]
CREATED: 07/04
REVISED: 05/10
TROWEL ARM ADJUSTMENT FIXTURE
PART #20801
Ex: Unit 36” (B436)
1)10810A – Trowel arm
2)10817A – Lift lever
3)10808 – Jam nut
4)10809 – Set screw
5)10824 – Block top
6)10507 – Bolt
7)10808 – Jam nut
8)10807 – Carriage bolt
9)10832 – Adjustment bar
10) 10507 – Bolt
Figure 5a.
NOTE: IT IS IMPORTANT THAT WHEN TIGHT -
ENING SQUARE HEAD NUT (4), IT SEATS ITSELF
SECURELY INTO DIMPLE MACHINED IN ARM.
NOTE: IT IS VITALLY IMPO RTANT TO ENSURE
THAT ONCE THE CARRIAGE BOLT IS ADJUSTED
TO THE CORRECT HEIGHT, IT DOES NOT MOVE
BEFORE, OR DURING THE TIGHTENING OF
LOCKNUT.
CREATED: 06/12
13
THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK

WALK BEHIND POWER TROWEL INSTRUCTION MANUAL
The trowel arm adjustment fixture (20801) is reversible.
By rotating the arm clamping fixture and the ring bolt,
both left hand and right hand trowel arms may be
adjusted. Before attempting adjustment, determine
whether the trowel arm is right handed or left handed.
When adjusting left hand trowel arms use the side of the
fixture marked “L”. When adjusting right hand trowels
arms use the opposite side. The adjustment bar will be
set on “36” for the Walk-behind trowel arm.
ADJUSTMENT PROCEDURE
1. Remove all trowel arm assemblies (1 & 2 arm and
attached lift lever) from suspected maladjusted spider
plate.
2. Remove lift lever (2) from trowel arm (1) by first
loosening jam nut (3) then square head screw (4). If
upon inspection (method left to discretion of
serviceman) any trowel arm (1) is found to be in a
bent condition, it must either be brought back to its
original straight condition (method left to the
serviceman’s discretion) or replaced with new part.
3. Replace lift levers (2) on new or straightened arms
(1) by reversing procedure as described above.
4. Place trowel arm assembly (1 and 2) in fixture (5)
with lift lever (2) butting up against fixture. Clamp in
place with bolts (6).
5. Loosen locknut (7) and screw carriage bolt (8) down
to full depth allowable. This will provide for ample
clearance to swing precision ground adjustment bar
(9) over head of carriage bolt.
Adjustment bar (9) is stamped for appropriate size of
machine. Swing appropriate side directly over carriage
bolt (8) and secure in place with bolt (10).
6. Adjust carriage bolt (8) upwards until contact is made
with adjustment bar (9); holding carriage bolt in
position with one wrench, tighten locknut (7) to secure
in position with second wrench.
7. This same procedure is to be followed with ALL arms
from spider plate assembly, and will ensure correct
and exact adjustment.
TROWEL ARM ADJUSTMENT SCREW
The trowel arm adjustment screw is to be used for field
adjustment of blade level, in the event of a damaged
trowel arm, to enable completion of the job. At the end of
the job repairs should be made to eliminate the damage.
When assembling trowel blades to trowel arms, the
adjustment screw should NEVER protrude below the
under-side surface of a trowel arm.
If the adjustment screw is not flush with the underside of
the trowel arm, then this will cause the power trowel to
bounce and vibrate especially at high speed. This will
also cause the trowel blades to leave an uneven finish to
the concrete due to the blades not being level to one
another.
Make certain that the adjusting screw is held firmly in
place while tightening the bolt which secures the blade to
the trowel arm.
17
375 ANNAGEM BLVD., MISSISSAUGA, ONTARIO, CANADA L5T 3A7, 905-364-4200 FAX [phone]
CREATED: 07/04
REVISED: 05/10
TROWEL ARM ADJUSTMENT FIXTURE
PART #20801
Ex: Unit 36” (B436)
1)10810A – Trowel arm
2)10817A – Lift lever
3)10808 – Jam nut
4)10809 – Set screw
5)10824 – Block top
6)10507 – Bolt
7)10808 – Jam nut
8)10807 – Carriage bolt
9)10832 – Adjustment bar
10) 10507 – Bolt
Figure 5a.
NOTE: IT IS IMPORTANT THAT WHEN TIGHT -
ENING SQUARE HEAD NUT (4), IT SEATS ITSELF
SECURELY INTO DIMPLE MACHINED IN ARM.
NOTE: IT IS VITALLY IMPO RTANT TO ENSURE
THAT ONCE THE CARRIAGE BOLT IS ADJUSTED
TO THE CORRECT HEIGHT, IT DOES NOT MOVE
BEFORE, OR DURING THE TIGHTENING OF
LOCKNUT.
BM120/BM446
ASSEMBLY DRAWINGS AND PARTS
LIST
CREATED: 06/12
14

WALK BEHIND POWER TROWEL INSTRUCTION MANUAL
The trowel arm adjustment fixture (20801) is reversible.
By rotating the arm clamping fixture and the ring bolt,
both left hand and right hand trowel arms may be
adjusted. Before attempting adjustment, determine
whether the trowel arm is right handed or left handed.
When adjusting left hand trowel arms use the side of the
fixture marked “L”. When adjusting right hand trowels
arms use the opposite side. The adjustment bar will be
set on “36” for the Walk-behind trowel arm.
ADJUSTMENT PROCEDURE
1. Remove all trowel arm assemblies (1 & 2 arm and
attached lift lever) from suspected maladjusted spider
plate.
2. Remove lift lever (2) from trowel arm (1) by first
loosening jam nut (3) then square head screw (4). If
upon inspection (method left to discretion of
serviceman) any trowel arm (1) is found to be in a
bent condition, it must either be brought back to its
original straight condition (method left to the
serviceman’s discretion) or replaced with new part.
3. Replace lift levers (2) on new or straightened arms
(1) by reversing procedure as described above.
4. Place trowel arm assembly (1 and 2) in fixture (5)
with lift lever (2) butting up against fixture. Clamp in
place with bolts (6).
5. Loosen locknut (7) and screw carriage bolt (8) down
to full depth allowable. This will provide for ample
clearance to swing precision ground adjustment bar
(9) over head of carriage bolt.
Adjustment bar (9) is stamped for appropriate size of
machine. Swing appropriate side directly over carriage
bolt (8) and secure in place with bolt (10).
6. Adjust carriage bolt (8) upwards until contact is made
with adjustment bar (9); holding carriage bolt in
position with one wrench, tighten locknut (7) to secure
in position with second wrench.
7. This same procedure is to be followed with ALL arms
from spider plate assembly, and will ensure correct
and exact adjustment.
TROWEL ARM ADJUSTMENT SCREW
The trowel arm adjustment screw is to be used for field
adjustment of blade level, in the event of a damaged
trowel arm, to enable completion of the job. At the end of
the job repairs should be made to eliminate the damage.
When assembling trowel blades to trowel arms, the
adjustment screw should NEVER protrude below the
under-side surface of a trowel arm.
If the adjustment screw is not flush with the underside of
the trowel arm, then this will cause the power trowel to
bounce and vibrate especially at high speed. This will
also cause the trowel blades to leave an uneven finish to
the concrete due to the blades not being level to one
another.
Make certain that the adjusting screw is held firmly in
place while tightening the bolt which secures the blade to
the trowel arm.
17
375 ANNAGEM BLVD., MISSISSAUGA, ONTARIO, CANADA L5T 3A7, 905-364-4200 FAX [phone]
CREATED: 07/04
REVISED: 05/10
TROWEL ARM ADJUSTMENT FIXTURE
PART #20801
Ex: Unit 36” (B436)
1)10810A – Trowel arm
2)10817A – Lift lever
3)10808 – Jam nut
4)10809 – Set screw
5)10824 – Block top
6)10507 – Bolt
7)10808 – Jam nut
8)10807 – Carriage bolt
9)10832 – Adjustment bar
10) 10507 – Bolt
Figure 5a.
NOTE: IT IS IMPORTANT THAT WHEN TIGHT -
ENING SQUARE HEAD NUT (4), IT SEATS ITSELF
SECURELY INTO DIMPLE MACHINED IN ARM.
NOTE: IT IS VITALLY IMPO RTANT TO ENSURE
THAT ONCE THE CARRIAGE BOLT IS ADJUSTED
TO THE CORRECT HEIGHT, IT DOES NOT MOVE
BEFORE, OR DURING THE TIGHTENING OF
LOCKNUT.
CREATED: 06/12
HANDLE AND CLUTCH ASSEMBLIES (BM120/BM446)
15
1
2
22
5
20
6
6
15
16 14
17
7
21
9
18
19
10
24
11
13
12
27
36
26
29
25
32
35
33
38
31
34
37
30
23
3
4
28

WALK BEHIND POWER TROWEL INSTRUCTION MANUAL
The trowel arm adjustment fixture (20801) is reversible.
By rotating the arm clamping fixture and the ring bolt,
both left hand and right hand trowel arms may be
adjusted. Before attempting adjustment, determine
whether the trowel arm is right handed or left handed.
When adjusting left hand trowel arms use the side of the
fixture marked “L”. When adjusting right hand trowels
arms use the opposite side. The adjustment bar will be
set on “36” for the Walk-behind trowel arm.
ADJUSTMENT PROCEDURE
1. Remove all trowel arm assemblies (1 & 2 arm and
attached lift lever) from suspected maladjusted spider
plate.
2. Remove lift lever (2) from trowel arm (1) by first
loosening jam nut (3) then square head screw (4). If
upon inspection (method left to discretion of
serviceman) any trowel arm (1) is found to be in a
bent condition, it must either be brought back to its
original straight condition (method left to the
serviceman’s discretion) or replaced with new part.
3. Replace lift levers (2) on new or straightened arms
(1) by reversing procedure as described above.
4. Place trowel arm assembly (1 and 2) in fixture (5)
with lift lever (2) butting up against fixture. Clamp in
place with bolts (6).
5. Loosen locknut (7) and screw carriage bolt (8) down
to full depth allowable. This will provide for ample
clearance to swing precision ground adjustment bar
(9) over head of carriage bolt.
Adjustment bar (9) is stamped for appropriate size of
machine. Swing appropriate side directly over carriage
bolt (8) and secure in place with bolt (10).
6. Adjust carriage bolt (8) upwards until contact is made
with adjustment bar (9); holding carriage bolt in
position with one wrench, tighten locknut (7) to secure
in position with second wrench.
7. This same procedure is to be followed with ALL arms
from spider plate assembly, and will ensure correct
and exact adjustment.
TROWEL ARM ADJUSTMENT SCREW
The trowel arm adjustment screw is to be used for field
adjustment of blade level, in the event of a damaged
trowel arm, to enable completion of the job. At the end of
the job repairs should be made to eliminate the damage.
When assembling trowel blades to trowel arms, the
adjustment screw should NEVER protrude below the
under-side surface of a trowel arm.
If the adjustment screw is not flush with the underside of
the trowel arm, then this will cause the power trowel to
bounce and vibrate especially at high speed. This will
also cause the trowel blades to leave an uneven finish to
the concrete due to the blades not being level to one
another.
Make certain that the adjusting screw is held firmly in
place while tightening the bolt which secures the blade to
the trowel arm.
17
375 ANNAGEM BLVD., MISSISSAUGA, ONTARIO, CANADA L5T 3A7, 905-364-4200 FAX [phone]
CREATED: 07/04
REVISED: 05/10
TROWEL ARM ADJUSTMENT FIXTURE
PART #20801
Ex: Unit 36” (B436)
1)10810A – Trowel arm
2)10817A – Lift lever
3)10808 – Jam nut
4)10809 – Set screw
5)10824 – Block top
6)10507 – Bolt
7)10808 – Jam nut
8)10807 – Carriage bolt
9)10832 – Adjustment bar
10) 10507 – Bolt
Figure 5a.
NOTE: IT IS IMPORTANT THAT WHEN TIGHT -
ENING SQUARE HEAD NUT (4), IT SEATS ITSELF
SECURELY INTO DIMPLE MACHINED IN ARM.
NOTE: IT IS VITALLY IMPO RTANT TO ENSURE
THAT ONCE THE CARRIAGE BOLT IS ADJUSTED
TO THE CORRECT HEIGHT, IT DOES NOT MOVE
BEFORE, OR DURING THE TIGHTENING OF
LOCKNUT.
CREATED: 06/12
16
Item No. Part No. Description Qty. Item No. Part No. Description Qty.
1 21718 Handle Welding Part 1 16 21709 Bearing 1
2 21730 Stop Switch Assembly 2 17 21726 Screw 1
3 10505 Upper Joint Plate 1 18 21712 Ext. Circlip 1
4 20976 Lower Joint Plate 1 19 21725 Bolt 1
5 10508 Throttle Control Assy. 1 20 00919 Sticker 1
6 21707 Handle Wheel 1 21 50266 Wave Washer 2
7 21731 Bushing 1 22 21717 Plastic Handle 4
8 21713 Adjust Shaft 1 23 13349 Bolt 1
9 21711 Washer 1 24 21724 Pin 1
10 21722 Adjust Shaft Bushing 1 25 10914 Yoke Arm Shaft 1
11 21705 Pulley 1 26 10311 Yoke Arm 1
12 21719 Wheel Bushing 1 27 14285 Pulley 1
13 21723 Pitch Control Cable 1 28 11178 Belt 2
14 10703 Lock Washer 1 29 10913 Ext. Circlip 2
15 21718 Pin 1
HANDLE ASSEMBLY (BM120/BM446)
Item No. Part No. Description Qty. Item No, Part No. Description Qty.
30 11045 Spindle 1 35 50117 Screw 2
31 21046 Drum 1 36 11044 Bearing 1
32 11015 Face Plate 1 37 10208 Key 1
33 11014 Weight 1 38 11013 Spring 1
34 11012 Bushing 1
CLUTCH ASSEMBLY (BM120/BM446)

WALK BEHIND POWER TROWEL INSTRUCTION MANUAL
The trowel arm adjustment fixture (20801) is reversible.
By rotating the arm clamping fixture and the ring bolt,
both left hand and right hand trowel arms may be
adjusted. Before attempting adjustment, determine
whether the trowel arm is right handed or left handed.
When adjusting left hand trowel arms use the side of the
fixture marked “L”. When adjusting right hand trowels
arms use the opposite side. The adjustment bar will be
set on “36” for the Walk-behind trowel arm.
ADJUSTMENT PROCEDURE
1. Remove all trowel arm assemblies (1 & 2 arm and
attached lift lever) from suspected maladjusted spider
plate.
2. Remove lift lever (2) from trowel arm (1) by first
loosening jam nut (3) then square head screw (4). If
upon inspection (method left to discretion of
serviceman) any trowel arm (1) is found to be in a
bent condition, it must either be brought back to its
original straight condition (method left to the
serviceman’s discretion) or replaced with new part.
3. Replace lift levers (2) on new or straightened arms
(1) by reversing procedure as described above.
4. Place trowel arm assembly (1 and 2) in fixture (5)
with lift lever (2) butting up against fixture. Clamp in
place with bolts (6).
5. Loosen locknut (7) and screw carriage bolt (8) down
to full depth allowable. This will provide for ample
clearance to swing precision ground adjustment bar
(9) over head of carriage bolt.
Adjustment bar (9) is stamped for appropriate size of
machine. Swing appropriate side directly over carriage
bolt (8) and secure in place with bolt (10).
6. Adjust carriage bolt (8) upwards until contact is made
with adjustment bar (9); holding carriage bolt in
position with one wrench, tighten locknut (7) to secure
in position with second wrench.
7. This same procedure is to be followed with ALL arms
from spider plate assembly, and will ensure correct
and exact adjustment.
TROWEL ARM ADJUSTMENT SCREW
The trowel arm adjustment screw is to be used for field
adjustment of blade level, in the event of a damaged
trowel arm, to enable completion of the job. At the end of
the job repairs should be made to eliminate the damage.
When assembling trowel blades to trowel arms, the
adjustment screw should NEVER protrude below the
under-side surface of a trowel arm.
If the adjustment screw is not flush with the underside of
the trowel arm, then this will cause the power trowel to
bounce and vibrate especially at high speed. This will
also cause the trowel blades to leave an uneven finish to
the concrete due to the blades not being level to one
another.
Make certain that the adjusting screw is held firmly in
place while tightening the bolt which secures the blade to
the trowel arm.
17
375 ANNAGEM BLVD., MISSISSAUGA, ONTARIO, CANADA L5T 3A7, 905-364-4200 FAX [phone]
CREATED: 07/04
REVISED: 05/10
TROWEL ARM ADJUSTMENT FIXTURE
PART #20801
Ex: Unit 36” (B436)
1)10810A – Trowel arm
2)10817A – Lift lever
3)10808 – Jam nut
4)10809 – Set screw
5)10824 – Block top
6)10507 – Bolt
7)10808 – Jam nut
8)10807 – Carriage bolt
9)10832 – Adjustment bar
10) 10507 – Bolt
Figure 5a.
NOTE: IT IS IMPORTANT THAT WHEN TIGHT -
ENING SQUARE HEAD NUT (4), IT SEATS ITSELF
SECURELY INTO DIMPLE MACHINED IN ARM.
NOTE: IT IS VITALLY IMPO RTANT TO ENSURE
THAT ONCE THE CARRIAGE BOLT IS ADJUSTED
TO THE CORRECT HEIGHT, IT DOES NOT MOVE
BEFORE, OR DURING THE TIGHTENING OF
LOCKNUT.
CREATED: 06/12
GEARBOX ASSEMBLY (BM120/BM446)
17
Item No. Part No. Description Qty. Item No. Part No. Description Qty.
39 21732 Gearbox Housing 1 54 21747 Plug 2
40 21733 Gearbox Cover 1 55 21748 Key 1
41 21734 Pressure Washer 1 56 21749 Oil Seal 1
42 21735 Flat Head Screw, Main Shaft 1 57 21750 Glass Eye 1
43 21736 Oil Release Valve 1 58 21751 Nut 2
44 21737 Bronze Gear 1 59 21752 Screw 8
45 21738 Main Shaft 1 60 21753 Bearing 1
46 21739 Left Bearing Flange 1 61 21754 Bearing 1
47 21740 Counter Shaft 1 62 21755 Bearing 1
48 21741 Right Bearing Flange 1 63 21756 Oil Seal 2
49 21742 Screw 12 64 21757 Oil Seal 1
50 21743 M10 Stud 4 65 21758 Key 1
51 11622 Nut 4 66 21759 Key 1
52 11621 Lock Washer 5 67 21760 Bearing 1
53 41516 Washer 5
58
53
52
50 60 67
49
46
56
61
54
64
60 49 48 63
43
59
60
42
41
62
44
45
53
52
51
50
39
55
57
47

WALK BEHIND POWER TROWEL INSTRUCTION MANUAL
The trowel arm adjustment fixture (20801) is reversible.
By rotating the arm clamping fixture and the ring bolt,
both left hand and right hand trowel arms may be
adjusted. Before attempting adjustment, determine
whether the trowel arm is right handed or left handed.
When adjusting left hand trowel arms use the side of the
fixture marked “L”. When adjusting right hand trowels
arms use the opposite side. The adjustment bar will be
set on “36” for the Walk-behind trowel arm.
ADJUSTMENT PROCEDURE
1. Remove all trowel arm assemblies (1 & 2 arm and
attached lift lever) from suspected maladjusted spider
plate.
2. Remove lift lever (2) from trowel arm (1) by first
loosening jam nut (3) then square head screw (4). If
upon inspection (method left to discretion of
serviceman) any trowel arm (1) is found to be in a
bent condition, it must either be brought back to its
original straight condition (method left to the
serviceman’s discretion) or replaced with new part.
3. Replace lift levers (2) on new or straightened arms
(1) by reversing procedure as described above.
4. Place trowel arm assembly (1 and 2) in fixture (5)
with lift lever (2) butting up against fixture. Clamp in
place with bolts (6).
5. Loosen locknut (7) and screw carriage bolt (8) down
to full depth allowable. This will provide for ample
clearance to swing precision ground adjustment bar
(9) over head of carriage bolt.
Adjustment bar (9) is stamped for appropriate size of
machine. Swing appropriate side directly over carriage
bolt (8) and secure in place with bolt (10).
6. Adjust carriage bolt (8) upwards until contact is made
with adjustment bar (9); holding carriage bolt in
position with one wrench, tighten locknut (7) to secure
in position with second wrench.
7. This same procedure is to be followed with ALL arms
from spider plate assembly, and will ensure correct
and exact adjustment.
TROWEL ARM ADJUSTMENT SCREW
The trowel arm adjustment screw is to be used for field
adjustment of blade level, in the event of a damaged
trowel arm, to enable completion of the job. At the end of
the job repairs should be made to eliminate the damage.
When assembling trowel blades to trowel arms, the
adjustment screw should NEVER protrude below the
under-side surface of a trowel arm.
If the adjustment screw is not flush with the underside of
the trowel arm, then this will cause the power trowel to
bounce and vibrate especially at high speed. This will
also cause the trowel blades to leave an uneven finish to
the concrete due to the blades not being level to one
another.
Make certain that the adjusting screw is held firmly in
place while tightening the bolt which secures the blade to
the trowel arm.
17
375 ANNAGEM BLVD., MISSISSAUGA, ONTARIO, CANADA L5T 3A7, 905-364-4200 FAX [phone]
CREATED: 07/04
REVISED: 05/10
TROWEL ARM ADJUSTMENT FIXTURE
PART #20801
Ex: Unit 36” (B436)
1)10810A – Trowel arm
2)10817A – Lift lever
3)10808 – Jam nut
4)10809 – Set screw
5)10824 – Block top
6)10507 – Bolt
7)10808 – Jam nut
8)10807 – Carriage bolt
9)10832 – Adjustment bar
10) 10507 – Bolt
Figure 5a.
NOTE: IT IS IMPORTANT THAT WHEN TIGHT -
ENING SQUARE HEAD NUT (4), IT SEATS ITSELF
SECURELY INTO DIMPLE MACHINED IN ARM.
NOTE: IT IS VITALLY IMPO RTANT TO ENSURE
THAT ONCE THE CARRIAGE BOLT IS ADJUSTED
TO THE CORRECT HEIGHT, IT DOES NOT MOVE
BEFORE, OR DURING THE TIGHTENING OF
LOCKNUT.
CREATED: 06/12
18
THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK

WALK BEHIND POWER TROWEL INSTRUCTION MANUAL
The trowel arm adjustment fixture (20801) is reversible.
By rotating the arm clamping fixture and the ring bolt,
both left hand and right hand trowel arms may be
adjusted. Before attempting adjustment, determine
whether the trowel arm is right handed or left handed.
When adjusting left hand trowel arms use the side of the
fixture marked “L”. When adjusting right hand trowels
arms use the opposite side. The adjustment bar will be
set on “36” for the Walk-behind trowel arm.
ADJUSTMENT PROCEDURE
1. Remove all trowel arm assemblies (1 & 2 arm and
attached lift lever) from suspected maladjusted spider
plate.
2. Remove lift lever (2) from trowel arm (1) by first
loosening jam nut (3) then square head screw (4). If
upon inspection (method left to discretion of
serviceman) any trowel arm (1) is found to be in a
bent condition, it must either be brought back to its
original straight condition (method left to the
serviceman’s discretion) or replaced with new part.
3. Replace lift levers (2) on new or straightened arms
(1) by reversing procedure as described above.
4. Place trowel arm assembly (1 and 2) in fixture (5)
with lift lever (2) butting up against fixture. Clamp in
place with bolts (6).
5. Loosen locknut (7) and screw carriage bolt (8) down
to full depth allowable. This will provide for ample
clearance to swing precision ground adjustment bar
(9) over head of carriage bolt.
Adjustment bar (9) is stamped for appropriate size of
machine. Swing appropriate side directly over carriage
bolt (8) and secure in place with bolt (10).
6. Adjust carriage bolt (8) upwards until contact is made
with adjustment bar (9); holding carriage bolt in
position with one wrench, tighten locknut (7) to secure
in position with second wrench.
7. This same procedure is to be followed with ALL arms
from spider plate assembly, and will ensure correct
and exact adjustment.
TROWEL ARM ADJUSTMENT SCREW
The trowel arm adjustment screw is to be used for field
adjustment of blade level, in the event of a damaged
trowel arm, to enable completion of the job. At the end of
the job repairs should be made to eliminate the damage.
When assembling trowel blades to trowel arms, the
adjustment screw should NEVER protrude below the
under-side surface of a trowel arm.
If the adjustment screw is not flush with the underside of
the trowel arm, then this will cause the power trowel to
bounce and vibrate especially at high speed. This will
also cause the trowel blades to leave an uneven finish to
the concrete due to the blades not being level to one
another.
Make certain that the adjusting screw is held firmly in
place while tightening the bolt which secures the blade to
the trowel arm.
17
375 ANNAGEM BLVD., MISSISSAUGA, ONTARIO, CANADA L5T 3A7, 905-364-4200 FAX [phone]
CREATED: 07/04
REVISED: 05/10
TROWEL ARM ADJUSTMENT FIXTURE
PART #20801
Ex: Unit 36” (B436)
1)10810A – Trowel arm
2)10817A – Lift lever
3)10808 – Jam nut
4)10809 – Set screw
5)10824 – Block top
6)10507 – Bolt
7)10808 – Jam nut
8)10807 – Carriage bolt
9)10832 – Adjustment bar
10) 10507 – Bolt
Figure 5a.
NOTE: IT IS IMPORTANT THAT WHEN TIGHT -
ENING SQUARE HEAD NUT (4), IT SEATS ITSELF
SECURELY INTO DIMPLE MACHINED IN ARM.
NOTE: IT IS VITALLY IMPO RTANT TO ENSURE
THAT ONCE THE CARRIAGE BOLT IS ADJUSTED
TO THE CORRECT HEIGHT, IT DOES NOT MOVE
BEFORE, OR DURING THE TIGHTENING OF
LOCKNUT.
CREATED: 06/12
SPIDER PLATE ASSEMBLY (BM120/BM446)
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82
84
85
86
87
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90
79
80
68
70
74
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86
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