Marshalltown M4611 User manual

36" and 46" MARSHALLTOWN POWER TROWELS
Includes Models M4611(RP), M469(RP), M365E(RP), M365(RP), M369(RP)
104 S. 8th Ave. | Marshalltown, IA
Phone [phone] | Fax [phone]
www.MARSHALLTOWN.com
WS1987

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INTRODUCTION
Congratulations on your purchase of a MARSHALLTOWN power trowel. MARSHALLTOWN prides
itself in producing the highest quality trowels for the professional and has applied the same
research, design, and production principles to these walk-behind power trowels.
These powerful machines designed for finishing and floating come in 36” and 46” rotor sizes and
are available with three different Honda engine sizes. The Honda GX160 is available on the 36”, the
GX270 is available on both sizes, and the GX340 is available on the 46”.
This machine was built with user safety in mind, however, it can present hazards if improperly
operated and serviced. Carefully read and follow all safety and operating instructions in this manual.
Ensure every operator reads this manual before operating the unit. The replacement of any part
with anything other than the manufacturer’s authorized replacement part may adversely affect the
performance, durability and safety of the product.
Be sure safety precautions are observed. Read and follow all safety and operating instructions
in this operator’s manual. The manufacturer reserves the right to make changes on or add
improvements to its product at any time without prior notice or obligation. The manufacturer
reserves the right to decide, upon its sole discretion and at any time, to discontinue this product.
Information regarding operation and maintenance of the engine can be found in a separate engine
manual supplied with this trowel. The engine manual provides all the information required regarding
engine adjustments, operation and maintenance. Should any questions arise concerning engine
operation or service, contact the nearest engine repair facility or the engine manufacturer.
This manual covers all MARSHALLTOWN power trowel models and options. For technical questions
or repair parts, please call MARSHALLTOWN customer service at 1-800-888-0127, 641-753-6341 or
visit www.MARSHALLTOWN.com.

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INTRODUCTION......................................................................................................................................................2
SAFETY PRECAUTIONS....................................................................................................................................... 4
SAFETY DECALS....................................................................................................................................................5
WARRANTY INFO...................................................................................................................................................5
SPECIFICATIONS .................................................................................................................................................. 6
COMMON COMPONENTS....................................................................................................................................7
ASSEMBLY..........................................................................................................................................................8-9
PRE-OPERATION CHECKS................................................................................................................................ 10
CONTROLS AND ACCESSORIES................................................................................................................. 10-11
OPERATION ..........................................................................................................................................................12
FLOATING/FINISHING.........................................................................................................................................13
TECHNICAL DATA ................................................................................................................................................14
MAINTENANCE ....................................................................................................................................................14
CHANGING THE BLADES ...................................................................................................................................15
ADJUSTING THE PITCH ARMS ....................................................................................................................15-16
PARTS BREAKDOWN
GEARBOX.........................................................................................................................................................17-18
36" SPIDER ASSEMBLY......................................................................................................................................19
46" SPIDER ASSEMBLY..................................................................................................................................... 20
THRUST COLLAR ASSEMBLY ...........................................................................................................................21
46" STABILIZER ASSEMBLY ............................................................................................................................. 22
KNOB STYLE HANDLE TUBE ASSEMBLY .................................................................................................23-24
RAPID PITCH HANDLE TUBE ASSEMBLY ................................................................................................ 25-26
36" BLADES ..........................................................................................................................................................27
46" BLADES..........................................................................................................................................................27
36" & 46" GUARD RING...................................................................................................................................... 28
36" EDGER ROTATING RING ............................................................................................................................. 29
UPPER HANDLE ASSEMBLY ............................................................................................................................30
DRIVE ASSEMBLY.......................................................................................................................................... 31-32
TROUBLESHOOTING.......................................................................................................................................... 33
TABLE OF CONTENTS

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SAFETY PRECAUTIONS
WARNING! • WARNING safety signs are located near specific hazards.
CAUTION! • General precautions are listed on CAUTION safety signs.
• This notation appears before warnings in the text. It means that the step that follows must be carried
out to avoid the possibility of personal injury or death. These warnings are intended to help the technician avoid any potential
hazards encountered in the normal service procedures. We strongly recommend that the reader takes advantage of the
information provided to prevent personal injury or injury to others.
THE FOLLOWING PRECAUTIONS ARE SUGGESTED TO HELP PREVENT ACCIDENTS. A CAREFUL OPERATOR IS THE
BEST OPERATOR. MOST ACCIDENTS CAN BE AVOIDED BY OBSERVING CERTAIN PRECAUTIONS. READ AND TAKE THE
FOLLOWING PRECAUTIONS BEFORE OPERATING THIS EQUIPMENT TO HELP PREVENT ACCIDENTS. EQUIPMENT SHOULD
BE OPERATED ONLY BY THOSE WHO ARE RESPONSIBLE AND INSTRUCTED TO DO SO.
CAUTION!
CALIFORNIA PROPOSITION 65 WARNING: Operation of this equipment and/or engine exhaust
from this product contains chemicals known to the State of California to cause cancer, birth defects, or other
reproductive harm.
• Read all operating and maintenance instructions before operating or servicing the machine
• Equipment is only as safe as its operator. Give complete and undivided attention to the operation of the equipment.
• Keep inexperienced and unauthorized people away from equipment at all times
• Know how to stop the equipment instantly.
• Test all safety switches before every use.
• Always have all guards and safety devices attached and in place before operating equipment.
• CAUTION! NEVER Operate the power trowel with the blade access panel off or if the kill switch is not functioning properly
• CAUTION! Never reach into the guard ring while the trowel is running
• CAUTION! Never let go of the power trowel or walk away from it while it is running
• Always make sure engine is stopped with the switch in the “OFF” position before making any adjustments or putting
hands or tools near the power trowel.
• Always make sure engine is in “OFF” position when servicing or not in use
• Keep the trowel in good condition. Loose or damaged parts are dangerous.
• Avoid loose clothing that could get caught in moving parts.
• CAUTION! Keep hands and feet away from moving parts.
• Always allow ample time for the power trowel to cool before making any adjustments
• Do not smoke while refueling the engine. Ensure the engine is in the “off” position and allow it to cool before refueling.
Do not spill fuel.
• NEVER operate the power trowel in confined areas without ample ventilation.
• Keep all warning, caution and safety instruction labels in good condition. Replace missing, damaged or illegible labels.
• DO NOT OPERATE this power trowel under the influence of alcohol or while taking medication that impairs your reactions.
• Never sit or ride on the power trowel.
• Always properly secure machine before transporting
• Always follow recommended maintenance schedules
• Use factory authorized parts for replacement.
• Never try to lift unit by yourself.
• Wear safety glasses and hearing protection while operating the power trowel.
• Wear proper protective clothing while operating trowel, including eye, ear, and clothing.
• Clear the work area around the machine to prevent tripping or falling onto the power trowel.
• Do not operate the power trowel on extreme inclines.
CAUTION!

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This product is warranted to the original purchaser only to be free of defects in material and workmanship, under normal
use and servicing, for a period of 2 years from the purchase date, excluding the engine. Warranty on the engine is limited to
the warranty extended by the engine manufacturer and any warranty claims related to the engine should be directed to the
engine manufacturer. MARSHALLTOWN Company’s sole obligation under this warranty is limited to the replacement or repair
of the product or covered part(s) at no charge delivered to you F.O.B standard ground rates from its designated facility if the
product is determined upon inspection by MARSHALLTOWN Company to have been defective in materials or workmanship.
MARSHALLTOWN Company’s warranty for replacement parts will extend for the duration of the original product warranty.
This warranty will not apply when the product becomes damaged or inoperative due to misuse, abuse, normal wear and
tear, neglect, improper maintenance, accident, or freight damage; if the product has not been operated and maintained in
accordance with the instructions furnished in the Operator’s Manual; or when the product has been altered or modified
without approval from MARSHALLTOWN Company.
Under no circumstances shall MARSHALLTOWN Company be responsible or liable for any consequential, special, or punitive
damages, pickup and delivery of the unit, inbound shipping charges to MARSHALLTOWN Company’s service facility, rental
charges for a replacement unit, loss of income, or other loss resulting from the failure of the product to function properly
because of a defect in material or workmanship covered under this warranty.
There are no warranties which extend beyond the description of this warranty. No employee or agent of MARSHALLTOWN
Company has the authority to modify this warranty.
If you wish to make a warranty claim, contact Customer Service at 1-800-888-0127 for return authorization and instructions.
THE FOREGOING LIMITED WARRANTIES ARE EXCLUSIVE AND ARE GIVEN AND ACCEPTED IN LIEU OF ANY AND ALL OTHER
WARRANTIES EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION, IMPLIED WARRANTIES OF MERCHANTABILITY
AND FITNESS FOR A PARTICULAR PURPOSE, AND ALL OTHER REMEDIES. MARSHALLTOWN COMPANY’S TOTAL
LIABILITY ARISING OUT OF SUPPLYING AND THE USE OF THE EQUIPMENT, WHETHER BASED ON A CLAIM OF WARRANTY,
NEGLIGENCE, OR OTHERWISE, SHALL NOT EXCEED THE COST PAID BY YOU FOR THE EQUIPMENT.
SAFETY DECALS
2-YEAR POWER TROWEL WARRANTY
If your safety and operating decals are damaged, they can be replaced by contacting Customer Service.
WS1250
WS1988
WS1985WS1984

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PART  STYLE ENGINE HANDLE
STYLE
"A
WIDTH IN
MM"
"B
HEIGHT IN
MM"
"C
LENGTH
IN MM"
ROTOR
RPM
WEIGHT
LBS KG
M4611 TROWEL HONDA GX KNOB STYLE   41.64 (1058) 81.13 (2061) 50-130 288
M469 TROWEL HONDA GX KNOB STYLE   41.64 (1058) 81.13 (2061) 50-130 274
M369 TROWEL HONDA GX KNOB STYLE .  41.64 (1058) 76.6 (1946) 50-130 257
M365 TROWEL HONDA GX KNOB STYLE .  41.64 (1058) 76.6 (1946) 50-130 219
M365E EDGER HONDA GX KNOB STYLE .  41.64 (1058) 75.66 (1922) 50-130 216
M4611RP TROWEL HONDA GX RAPID PITCH   41.64 (1058) 81.13 (2061) 50-130 294
M469RP TROWEL HONDA GX RAPID PITCH   41.64 (1058) 81.13 (2061) 50-130 280
M369RP TROWEL HONDA GX RAPID PITCH .  41.64 (1058) 76.6 (1946) 50-130 263
M365RP TROWEL HONDA GX RAPID PITCH .  41.64 (1058) 76.6 (1946) 50-130 225
M365ERP EDGER HONDA GX RAPID PITCH .  41.64 (1058) 75.66 (1922) 50-130 222
C
B
A
SPECIFICATIONS

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1. Handle tube
2. Handle bar
3. Handle bar adjustment
4. Handle grip
5. Tether safety switch
6. Centrifugal safety switch
7. Throttle
8. Mounting for bicycle bottle holder
9. Pitch adjustment
10. Engine
11. Recoil starter
12. Air filter
13. Gas tank
14. On/Off switch
15. Fuel valve lever and choke
16. Belt guard
17. Gearbox
18. Guard Ring
19. Stabilizing ring (46” only)
20.Blade access panel
21. Blades
22. Trowel arm
23. Thrust plate
24. Lifting plate
2
3
11
17
8
15
12
24
57
6
1
13
10
18
20
9
4
14
16
19
21
23 22
COMMON COMPONENTS

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ASSEMBLY
Attaching the handle to the machine
Place the handle under the mounting flange so that
the holes in the handle and mounting flange align.
Insert the bolts through the bottom of the handle
and fasten the nuts to 35 ft-lbs. (Figure 1)
Attaching the Rapid Pitch handle (Rapid pitch
handles only)
Place the rapid pitch handle so that the holes of
the handle and the internal pitching linkage are in
alignment (Figure 2). Place bolts through the holes.
Figure 3 Figure 4
Figure 5
Figure 2
Figure 1 Handle Mounting Flange

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ASSEMBLY CONT.
Attaching the throttle cable
Remove the nut from the air filter cover (Figure 6) and then the nut that holds the air filter in place (Figure 7).
The throttle lever needs to be pushed all the way away from the operator (Figure 8). Make sure that the engines
throttle lever is in the closed position and insert the cable under the keeper, inserting the “Z” bend cable into the
small throttle lever hole. (Figure 9). Tighten the keeper.
Attaching the electrical wires
Attach the two red wires to the wiretaps near the engine’s on/off switch (Figure 10). Attach the two black
wires to the wire studs under the valve cover. (Figure 11).
Figure 6 Figure 7
Figure 8
Figure 10 Safety Switch Wiretaps
Figure 9
Figure 11 Ground Wire Studs

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PRE-OPERATIONAL CHECKS
CONTROLS AND ACCESSORIES
The following steps should be taken prior to using the power trowel:
1. The operator must be familiar with the location and operation of all controls.
2. The unit ships with oil, but check the crankcase oil and fill the fuel tank before starting. Read and
understand the engine manual supplied with this machine regarding adjustments, operation, and
maintenance before operating this machine.
3. Check the gearbox oil sight glass to ensure the oil is filled halfway up the glass. Use only
MARSHALLTOWN gearbox oil to fill and do not over fill.
4. Check the fuel filter and inspect air filter
5. Check both safety switches and electrical connections.
6. Check nuts and bolts to ensure nothing has loosened during shipping.
Handles
The handle bar is adjusted by simply unscrewing the
adjustment knob attached to the handle and moving
the handle to the preferred height (Figure 12)
Centrifugal Safety Switch
The weight within the safety switch must be able
to move freely without obstruction forward and
backwards. Test the safety switch before every use.
Failure to have a free moving or properly functioning
switch will inhibit the switch from working as intended.
Push the weight away from you so that it is closer to
the engine before starting the trowel.
Throttle
Throttle should be in the furthest forward position
before starting the trowel. Failure to do so will cause
trowel blades to rotate upon starting. Once started pull
throttle towards you to start/increase rotation of blades.
Tether Safety Switch
Secure tether to your person before starting to finish.
If the handle slips out of your hand the plug will detach
from the safety switch and stop the machine. Test the
safety switch before every use. The button on top of
the tether switch can also be used to stop the engine.
Figure 14 Centrifugal Safety Switch Figure 15 Tether Safety Switch
Figure 13 ThrottleFigure 12 Handle Adjustment Knob

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CONTROLS AND ACCESSORIES CONT.
Knob Pitching System
Turn the knob clockwise to increase the angle of the
blades and turn them counterclockwise to decrease
the angle of the blades.
Bottle Holder Mounting Pad
There are two tapped holes opposite of the centrifugal safety switch that will accept any standard bicycle bottle
holder. This can be used to hold a spray bottle to wet the concrete as it sets-up.
Rapid Pitching System
Pull the Pitching lever towards you to increase the
angle of the blades and push the lever away from
you towards the front of the machine to decrease
the angle of the blades.
Blade Access Panel
The access panel screw can be found on the right side of the panel. Loosened the screw and swing the panel to the
left to easily access the blades. Close the panel and tighten the screw before running the machine.
Figure 18 Bottle Holder Mounting Pad Figure 19 Bottle Holder
Figure 20 Access Panel
Figure 17 Quick Pitch Handle
Figure 16 Knob Style Pitching Handle

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OPERATION
STARTING THE ENGINE
1. On a cold engine, move choke lever to CLOSED position. To restart a warm engine leave choke in
OPEN position.
2. Both safety switches need to be in the running position otherwise the engine will not start.
3. Switch the On/Off Switch to the On position.
4. Switch the fuel valve lever on.
5. Pull the starter grip lightly until you feel resistance, then pull briskly. Repeat until engine starts.
6. If the choke lever was moved to the CLOSED position to start the engine, gradually move it to the
OPEN position as the engine warms up.
RESTARTING A WARM ENGINE
1. Leave the choke lever in the OPEN position.
2. Switch the On/Off Switch to the On position.
3. Switch the fuel valve lever on.
4. Pull the starter grip lightly until you feel resistance, then pull briskly. Repeat until engine starts.

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FLOATING/FINISHING
RECOMMENDED SPARE PARTS
MARSHALLTOWN trowels come with combination blades installed. These blades can be used to float
and finish. Combination blades or a float pan can be used to float wet concrete to increase the flatness of
the slab. Combination and finish blades can be used to finish the slab once the concrete starts to set up
and the surface is ready to take a finish.
1. Place the trowel on the concrete and start the engine.
2. Attach tether to your person.
3. Slowly increase engine RPM by pulling the throttle lever towards you until the blades/pan start(s) to
spin.
4. Adjust the speed to the desired rotation
5. If using blades, pitch the blades to the desired angle. If using a pan, the blades should be flat on the
surface of the pan.
6. While slowly and gently pulling the machine backwards, push down on the handle to move the cage to
the right and pull up on the handle to move the cage left.
7. Use caution around pipes, walls, obstacles and the edge of the forms. If you have and edger machine
the cage on the machine will rotate while up against walls to help prevent damage.
8. Use until the desired surface is obtained.
DESCRIPTION EDI QTY
GEARBOX INPUT GASKET/SEAL KIT  1
GEARBOX INPUT BEARING KIT  1
GEARBOX OUTPUT GASKET/SEAL KIT  1
GEARBOX OUTPUT BEARING KIT  1
36" TROWEL ARM  1
46" TROWEL ARM  1
TROWEL ARM BUSHING  2
THRUST BEARING KIT  1
THROTTLE ASSEMBLY  1
CENTRIFUGAL SAFETY SWITCH ASSEMBLY 28916 2
LOWER HANDLE GROMMET AND SPACER 28917 1
PITCH CABLE 28918 1
HANDLE GRIP 28919 2
TETHER SAFETY ASSEMBLY 28920 1
BELT GUARD 28921 1
V-BELT (GX340 AND GX270) 28922 2
V-BELT (GX160) 28923 2
GEARBOX LUBRICANT 0.75L 28928 1
SEE HONDA MANUAL FOR SUGGESTED ENGINE SPARE PARTS NA NA

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TECHNICAL DATA
MAINTENANCE
HONDA GX340 GX270 GX160
WEIGHT LBS 70 57 33
DISPLACEMENT CM^ 289 270 163
OIL CAPACITY US QT 1.2 1.2 0.61
FUEL TANK CAPACITY US GAL. 1.61 1.4 0.82
FUEL  OCTANE OR HIGHER
IDLE SPEED RPM 1400
TOP SPEED RPM 3800
SPARK PLUG BPR6ES (NGK)
SPARK PLUG GAP .7 to .8 mm
ENGINE OIL SAE 10W30
CHECK OIL LEVEL BEFORE EACH USE
CHANGE ENGINE OIL FIRST MONTH OR  HRS. -  MO. OR  HRS
AFTER
CHECK GEARBOX OIL BEFORE EACH USE
CHECK FUEL LEVEL BEFORE EACH USE
CHECK AIR FILTER BEFORE EACH USE
CHECK BLADES BEFORE EACH USE
CHANGE BLADES AS NEEDED
CHECK BELT EVERY  HOURS OR EVERY  MONTHS
CHANGE BELT AS NEEDED
CHECK THROTTLE AND PITCH CABLES EVERY  HOURS OR  YEAR
REPLACE AIR FILTER EVERY  HOURS OR EVERY  MONTHS
SPARK PLUG - CHECK AND ADJUST EVERY  HOURS OR  YEAR
SPARK PLUG - REPLACE EVERY  HOURS OR  YEARS
ELECTRONIC CONNECTIONS BEFORE EACH USE
CHECK NUTS AND BOLTS BEFORE EACH USE
CHECK SAFETY SWITCHES BEFORE EACH USE

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CHANGING THE BLADES
ADJUSTING THE PITCHING ARMS
1. Using the pitch handle lay the blades flat on a very level surface.
2. Remove all bolts and lock washers that hold the blade on (2 for the 36" and 3 for the 46").
3. Remove the blade from under the arm.
4. Clean arms thoroughly of any debris.
5. Replace with a new blade. Be sure to replace the blades in the right orientation. Combination blades
are to be installed with the larger portion of the blade on the right side of the arm when looking down
at it.
6. Replace all bolts and lock washers.
1. Using the pitch handle lay the blades flat on a very level surface.
2. Mark an outline of the blade on the floor directly under the handle. Mark the blade opposite of this
also. You will be moving the cage and blades on the floor and will need these outline to make sure all
of the blades are moved to the correct position.
3. Pitch the blade under the handle to about half way and do not touch again until after this procedure is
finished.
4. Measure from the floor directly under the centrifugal safety switch to the top of the safety switch.
Mark the location on the floor that was measured from. This is the distance the handle should be
from the ground when all blades are rotated into the outlines marked.
Figure 21 Blade Adjustment
X

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5. Rotate the machine 90 degrees so that the blade to the left of the one just measured is now inside
the outline and the blade opposite is inside its outline.
6. Move the handle so that the safety switch is directly above the mark made on the floor.
7. Measure the distance from the mark on the floor to the top of the safety switch. If it is not with in a
1/16" go to step 8 to adjust the pitch. If it is within range go to step 9.
8. To adjust the height loosen the nut on the pitch finger and rotate the pitch adjustment bolt. To
decrease the distance rotate the bolt clockwise and to increase the distance rotate the bolt
counterclockwise. Tighten the nut once the height is within 1/16".
9. Repeat steps 5 through 8 until all blades have been in the outline and the height is within range.
Figure 22 Adjustment Screw and Nut
SCREW
NUT

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GEARBOX (R4326)
23201415
23
1
7
6
4
16
19
18
12
2
10
22
21
11
3
13
9
8
5
17

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REF # NAME PART # QTY
1 GEARBOX R4327 1
2 GEARBOX COVER R4328 1
3 GEARBOX CAP R4329 1
4 GEAR WX2303 1
5 INPUT WORM SHAFT WX2352 1
6 OUTPUT CONE WX2359 2
7 OUTPUT CUP WX2361 2
8 INPUT CONE WX2358 2
9 INPUT CUP WX2360 2
10 OUTPUT SEAL WK217 1
11 INPUT SEAL WK216 1
12 OUTPUT O-RING WK215 1
13 INPUT O-RING WK214 1
14 3/4 NPT SIGHT GLASS WR1281 1
15 PLUG, 3/8 SQ WR1295 2
16 KEY, 5/16 X 5/16 X 1 WR1288 1
17 INPUT SHIM KIT 28294 1
18 OUTPUT SHIM KIT 28295 1
19 OUTPUT SHAFT R4314 1
20 VENT, 1/8 NPT WR1318 1
21 HEX CAP SCREW 1/4-20 X 5/8 WR1303 4
22 HEX CAP SCREW 5/16 -18 X 3/4 WR1309 4
23 HEX CAP SCREW 1/ 4-28 X 1/4 WR1304 4
11,13,17 GEARBOX INPUT GASKET/SEAL KIT 28907 1
8,9 GEARBOX INPUT BEARING KIT 28908 1
10,12,18 GEARBOX OUTPUT GASKET/SEAL KIT 28909 1
6,7 GEARBOX OUTPUT BEARING KIT 28910 1
PARTS BREAKDOWN

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36" SPIDER ASSEMBLY (R4415)
REF # NAME PART # QTY
1 SPIDER BASE R4361 1
2 TROWEL ARM 28911 4
3 SPIDER FINGER R4363 4
4 ARM BUSHING 28913 8
5 PITCH ADJUSTMENT BOLT WR1280 4
6 RETAINING SCREW WX2343 4
7 ARM SPRING WX2333 4
8 ROLL PIN, 5/16 X 1 3/4 WR1299 4
9 HEX JAM NUT, 3/8-16 WR1197 4
1
4
7
3
2
8
9
5
6