MULTIQUIP FCG1 SERIES Application guide

© COPYRIGHT 2002, MULTIQUIP INC.
OPERATION & PARTS MANUAL
CONCRETE SAW
FCG1 SERIES
Revision #1 (10/08/02)
MULTIQUIP INC..
..
. PARTS DEPARTMENT:
18910 WILMINGTON AVE. 800-427-1244
CARSON, CALIFORNIA 90746 FAX: [phone]
310-537-3700
SERVICE DEPARTMENT/TECHNICAL ASSISTANCE:
800-421-1244 800-478-1244
FAX:[phone] FAX:[phone]
E-mail:[email protected] •www:multiquip.com
Atlanta • Boise • Dallas • Houston • Newark
Montreal, Canada • Manchester, UK
Rio De Janiero, Brazil • Guadalajara, Mexico
MODEL #
SERIAL #
P/N 25486

FCG1 CONCRETE SAW — OPERATION & PARTS MANUAL — REV. #1 (10/08/02) — PAGE 3
HERE'S HOW TO GET HELP
PLEASE HAVE THE MODEL AND SERIAL NUMBER
ON-HAND WHEN CALLING
PARTS DEPARTMENT
800-427-1244 or 310-537-3700
FAX: [phone] or 310-637-3284
SERVICE DEPARTMENT/TECHNICAL ASSISTANCE
800-478-1244 or 310-537-3700
FAX: [phone]
WARRANTY DEPARTMENT
888-661-4279, or 310-661-4279
FAX: [phone]
MAIN
800-421-1244 or 310-537-3700
FAX: [phone]

PAGE 4 — FCG1 CONCRETE SAW— OPERATION & PARTS MANUAL — REV. #1 (10/08/02)
FCG1 CONCRETE SAW— TABLE OF CONTENTS
Here's How To Get Help ............................................ 3
Table Of Contents ..................................................... 4
Parts Ordering Procedures ....................................... 5
Safety Message Alert Symbols .............................. 6-7
Rules For Safe Operation .................................... 8-10
Operation And Safety Decals .................................. 11
Specifications (Saw) ................................................ 12
Specifications (Engine) ........................................... 13
MULTIQUIP — FCG1
CONCRETE SAW
Familiarization/Controls & Components ............. 14-15
Basic Engine ........................................................... 16
Assembly and Installation .................................. 17-18
Blades ..................................................................... 19
Blade Placement ................................................ 20-21
Pre-Inspection ......................................................... 22
Initial Start-Up ......................................................... 23
Operation ................................................................ 24
Maintenance ...................................................... 25-26
Troubleshooting (Saw) ............................................ 27
Troubleshooting (Engine) ................................... 28-29
Explanation Of Codes In Remarks Column ............ 30
Suggested Spare Parts ........................................... 31
Decals ................................................................ 32-33
Guards Assembly ............................................... 34-35
Guides Assembly ............................................... 36-37
Undercarriage Assembly ................................... 38-39
Handle & Depth Adjuster Assembly ................... 40-41
Engine & Blade Drive Assembly......................... 42-43
Terms and Conditions of Sale ................................. 44
NOTE
Specifications and
part numbers are
subject to change
without notice.
Honda GX200QXC9 Engine
Air Cleaner Assembly......................................... 44-45
Camshaft Assembly ........................................... 46-47
Carburetor Assembly ......................................... 48-49
Control Assembly ............................................... 50-51
Crankcase Cover Assembly ............................... 52-53
Crankshaft Assembly ......................................... 54-55
Cylinder Barrel Assembly ................................... 56-57
Cylinder Head Assembly .................................... 58-59
Fan Cover Assembly .......................................... 60-61
Flywheel Assembly ........................................... 62-63
Fuel Tank Assembly ........................................... 64-65
Ignition Assembly ............................................... 66-67
Muffler Assembly ............................................... 68-69
Piston Assembly ................................................. 70-71
Recoil Starter Assembly..................................... 72-73
Gasket Kit Assembly ............................................... 75
Labels Assembly ................................................ 76-77
Terms and Conditions of Sale ................................. 78

FCG1 CONCRETE SAW — OPERATION & PARTS MANUAL — REV. #1 (10/08/02) — PAGE 5
FCG1 CONCRETE SAW— PARTS ORDERING PROCEDURES
Get special freight allowances
when you order 10 or more
line items via FAX!**
■■
■■
■ UPS Ground Service at no charge for freight
■■
■■
■ UPS Third Day Service at one-half of actual freight
cost
No other allowances on freight shipped by any other carrier.
**Common nuts, bolts and washers (all items under $1.00 list price)
do not count towards the 10+ line items.
*DISCOUNTS ARE SUBJECT TO CHANGE*
Fax order discount and UPS special programs revised June 1, 1995
Earn Extra Discounts when
you order by FAX!
All parts orders which include complete part numbers
and are received by fax qualify for the following extra
discounts:
Number of
line items ordered Additional Discount
1-9 items 3%
10+ items** 5%
Now! Direct TOLL-FREE access
to our Parts Department!
Toll-free nationwide:
800-421-1244
Toll-free FAX:
800/6-PARTS-7 • 800-672-7877
■■
■■
■Dealer account number
■■
■■
■Dealer name and address
■■
■■
■Shipping address (if different than billing address)
■■
■■
■Return fax number
■■
■■
■Applicable model number
■■
■■
■Quantity, part number and description of each part
■■
■■
■Specify preferred method of shipment:
•UPS Ground
•UPS Second Day or Third Day*
•UPS Next Day*
•Federal Express Priority One (please provide us with your Federal
Express account number)*
•Airborne Express*
•Truck or parcel post
*Normally shipped the same day the order is received, if prior to 2PM Pacific Coast Time.
Extra Fax DiscountExtra Fax Discount
Extra Fax DiscountExtra Fax Discount
Extra Fax Discount
for Domestic USAfor Domestic USA
for Domestic USAfor Domestic USA
for Domestic USA
Dealers OnlyDealers Only
Dealers OnlyDealers Only
Dealers Only

PAGE 6 — FCG1 CONCRETE SAW— OPERATION & PARTS MANUAL — REV. #1 (10/08/02)
FCG1 CONCRETE SAW— SAFETY MESSAGE ALERT SYMBOLS
Safety precautions should be followed at all times when operating
this equipment. Failure to read and understand the Safety
Messages and Operating Instructions could result in injury to
yourself and others.
FOR YOUR SAFETY AND THE SAFETY OF OTHERS!
This Owner's Manual has been developed to provide
complete instructions for the safe and efficient operation
of the MQ Whiteman FCG1 CONCRETE SAW. For
engine maintenance information, please refer to the
engine manufacturers instructions for data relative to its
safe operation.
Before using this CONCRETE SAW, ensure that the
operating individual has read and understands all
instructions in this manual.
NOTE
SAFETY MESSAGE ALERT SYMBOLS
The three (3) Safety Messages shown below will inform you
about potential hazards that could injure you or others. The
Safety Messages specifically address the level of exposure to
the operator, and are preceded by one of three words: DANGER,
WARNING, or CAUTION.
DANGER: You WILL be KILLED or
SERIOUSLY injured if you DO NOT follow
directions.
WARNING: You CAN be KILLED or
SERIOUSLY injured if you DO NOT follow
directions.
CAUTION: You CAN be injured if you
DO NOT follow directions.
HAZARD SYMBOLS
Engine exhaust gases contain poisonous
carbon monoxide. This gas is colorless and
odorless, and can cause death if inhaled.
NEVER operate this equipment in a confined
area or enclosed structure that does not
provide ample free flow air.
Potential hazards associated with FCG1 Concrete Saw operation
will be referenced with "
Hazard Symbols " which appear
throughout this manual, and will be referenced in conjunction
with Safety "
Message Alert Symbols ".
Gasoline is extremely flammable, and its
vapors can cause an explosion if ignited. DO
NOT start the engine near spilled fuel or
combustible fluids. DO NOT fill the fuel tank
while the engine is running or hot. DO NOT
overfill tank, since spilled fuel could ignite if it
comes into contact with hot engine parts or
sparks from the ignition system. Store fuel in
approved containers, in well-ventilated areas
and away from sparks and flames. NEVER
use fuel as a cleaning agent.
Burn Hazards
Engine components can generate extreme heat.
To prevent burns, DO NOT touch these areas
while the engine is running or immediately after
operations. NEVER operate the engine with
heat shields or heat guards removed.
Rotating Parts
NEVER operate equipment with covers, or
guards removed. Keep
fingers , hands , hair
and clothing away from all moving parts to
prevent injury.
Explosive Fuel
Lethal Exhaust Gases

FCG1 CONCRETE SAW — OPERATION & PARTS MANUAL — REV. #1 (10/08/02) — PAGE 7
Accidental Starting
ALWAYS place the engine ON/OFF
switch in the OFF position, when the saw
is not in use.
Over Speed Conditions
NEVER tamper with the factory settings of the
engine governor or settings. Personal injury
and damage to the engine or equipment can
result if operating in speed ranges above
maximum allowable.
Respiratory Hazard
ALWAYS wear approved respiratory protection.
ALWAYS wear approved eye and hearing
protection.
Sight and Hearing hazard
Equipment Damage Messages
Other important messages are provided throughout this manual
to help prevent damage to your concrete saw, other property, or
the surrounding environment.
FCG1 CONCRETE SAW— SAFETY MESSAGE ALERT SYMBOLS
Guards and Covers In Place
NEVER operate the saw without blade guards
and covers in place. Adhere to safety
guidelines ANSI American National
Standards Institute, OSHA or other applicable
local regulations.
This concrete saw , other property,
or the surrounding environment
could be damaged if you do not
follow instructions.
Rotating Blade
Rotating blade can cut and crush. Keep
hands and feet clear.
NOTE

PAGE 8 — FCG1 CONCRETE SAW— OPERATION & PARTS MANUAL — REV. #1 (10/08/02)
CAUTION:
Failure to follow instructions in this manual
may lead to serious injury or even death! This
equipment is to be operated by trained and
qualified personnel only! This equipment is
for industrial use only.
The following safety guidelines should always be used when
operating the FCG1 Concrete Saw.
SAFETY
■ DO NOT operate or service this equipment
before reading this entire manual.
■ This equipment should not be operated by persons under 18
years of age.
■ NEVER operate the saw without proper protective
clothing, shatterproof glasses, steel-toed boots
and other protective devices required by the job.
■ NEVER operate this equipment when not
feeling well due to fatigue, illness or taking
medicine.
■ NEVER operate the saw under the
influence or drugs or alcohol.
■ NEVER use accessories or attachments, which are not
recommended by Multiquip for this equipment. Damage to
the equipment and/or injury to user may result.
■ Manufacturer does not assume responsibility for any accident
due to equipment modifications. Unauthorized equipment
modification will void all warranties.
■ Whenever necessary, replace nameplate, operation and
safety decals when they become difficult read.
■ ALWAYS check the saw for loosened threads or bolts before
starting.
■ ALWAYS use extreme caution when
working with flammable liquids. When
refueling, stop the engine and allow it
to cool.
■ NEVER smoke around or near the
machine. Fire or explosion could result from
fuel vapors , or if fuel is spilled on a hot!
engine.
■ NEVER operate the saw in an explosive atmosphere where
fumes are present or near combustible materials. An explosion
or fire could result causing severe
bodily harm or even
death.
■ Topping-off to filler port is dangerous, as it tends to spill fuel.
■ NEVER use fuel as a cleaning agent.
■ NEVER touch the hot exhaust
manifold, muffler or cylinder. Allow
these parts to cool before servicing
the saw.
■ The engine of this saw requires an adequate free flow of
cooling air. NEVER operate the saw in any enclosed or narrow
area where free flow of the
air is restricted. If the air flow
is restricted it will cause
serious damage to the saw's
engine and may cause injury
to people. Remember the
saw's engine gives off
DEADLY carbon monoxide
gas.
■ HighTemperatures – Allow the engine to cool before adding
fuel or performing service and maintenance functions. Contact
with
hot! components can cause serious burns.
■ ALWAYS refuel in a well-ventilated area, away from sparks
and open flames.
FCG1 CONCRETE SAW— RULES FOR SAFE OPERATION

FCG1 CONCRETE SAW — OPERATION & PARTS MANUAL — REV. #1 (10/08/02) — PAGE 9
FCG1 CONCRETE SAW— RULES FOR SAFE OPERATION
DIAMOND BLADE SAFETY
■ Use appropriate steel centered diamond blades
manufactured for use on concrete saws.
■ Always inspect diamond blades before each use. The blade
should exhibit no cracks, dings, or flaws in the steel centered
core and/or rim. Center (arbor) hole must be undamaged
and true.
■ Examine blade flanges for damage, excessive wear and
cleanliness before mounting blade. Blade should fit snugly
on the shaft and against the inside/outside blade flanges.
■ Ensure the blade is marked with an operating speed greater
than the blade shaft speed of the saw.
■ Only cut the material that is specified by the diamond blade.
Read the specifications of the diamond blade to ensure the
proper tool has been matched to the material being cut.
■ Always keep blade guards in place. Exposure of the diamond
blade must not exceed 180 degrees.
■ Ensure that the diamond blade does not come into contact
with the ground or surface during transportation. DO NOT
drop the diamond blade on ground or surface.
■ The engine governor is designed to permit maximum engine
speed in a no-load condition. Speeds that exceed this limit
may cause the diamond blade to exceed the maximum safe
allowable speed.
■ Ensure that the blade is mounted for proper operating
direction.
GENERAL SAFETY
■ ALWAYS read, understand, and follow procedures in
Operator's Manual before attempting to operate equipment.
■ ALWAYS be sure the operator is familiar with proper safety
precautions and operating techniques before using the saw.
■ NEVER leave the machine unattended while running.
■ Block the unit when leaving or when using on a slope.
■ ALWAYS check to make sure that the operating area is clear
before starting the engine.
■ Maintain this equipment in a safe operating condition at all
times.
■ ALWAYS stop the engine before servicing, adding fuel and
oil.
■ NEVER run the engine without the air filter. Severe engine
damage could occur.
■ ALWAYS service air cleaner frequently to prevent carburetor
malfunction.
■ AVOID wearing jewelry or loose fitting clothing that may snag
on the controls or moving parts, this can cause a serious
injury.
■ ALWAYS keep clear of rotating or moving parts while
operating or the saw.
■ ALWAYS store equipment properly when it is not being used.
Equipment should be stored in a clean, dry location out of
the reach of children.
■ NEVER use accessories or attachments which are not
recommended by the manufacturer for this equipment.
Damage to the equipment and/or injury to user may result.
WARNING
■ ALWAYS check to make sure that the
operating area is clear before starting the
engine.
■ Keep all inexperienced and unauthorized people away from
the equipment at all times.
SAWTRANSPORTATION SAFETY
■ Use the lifting handle and/or the appropriate lifting equipment
to ensure the safe movement of the saw.
■ DO NOT use the handle bars and/or front pointer as lifting
points.
■ NEVER attempt to tow the untrailered saw behind a vehicle.
■ Do not use on slopes or on extremely unlevel surfaces. An
engine tipped to extreme angles may cause oil to gravitate
into the cylinder head making the engine difficult to start.
■ NEVER transport the saw with the blade mounted.

PAGE 10 — FCG1 CONCRETE SAW— OPERATION & PARTS MANUAL — REV. #1 (10/08/02)
FCG1 CONCRETE SAW— RULES FOR SAFE OPERATION
EMERGENCIES
■ ALWAYS know the location of
the nearest
fire extinguisher .
■ ALWAYS know the location of the
nearest and
first aid kit .
■ In emergencies always know the location of the
nearest phone or
keep a phone on the job site .
Also know the phone numbers of the nearest
ambulance , doctor and fire department . This
information will be invaluable in the case of an
emergency.

FCG1 CONCRETE SAW — OPERATION & PARTS MANUAL — REV. #1 (10/08/02) — PAGE 11
FCG1 CONCRETE SAW— OPERATION AND SAFETY DECALS
Figure 1. FCG1 Concrete Saw Decals
Machine Operation And Safety Decals
The FCG1 Concrete Saw is equipped with a number of safety decals.These decals are provided for operator safety and maintenance
information. Should any of these decals become unreadable, replacements can be obtained from your dealer.

PAGE 12 — FCG1 CONCRETE SAW— OPERATION & PARTS MANUAL — REV. #1 (10/08/02)
FCG1 CONCRETE SAW— SPECIFICATIONS (SAW)
Figure 2. FCG1 Concrete Saw Dimensions
Side View
Front View
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FCG1 CONCRETE SAW — OPERATION & PARTS MANUAL — REV. #1 (10/08/02) — PAGE 13
FCG1 CONCRETE SAW— SPECIFICATIONS (ENGINE)
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PAGE 14 — FCG1 CONCRETE SAW— OPERATION & PARTS MANUAL — REV. #1 (10/08/02)
FCG1 CONCRETE SAW—FAMILIARIZATION/ CONTROLS & COMPONENTS
FAMILIARIZATION
This FCG1-6H SlabSaver Saw is designed for wet or dry sawing
of concrete slabs utilizing diamond blades. The saw has been
engineered for general and industrial flat sawing applications
that include: Joint Sawing of Green Concrete, Decorative
Sawing in Cured Concrete, Light Demolition Sawing and "V"
Groove Beveling. The simple and compact nature of the
SlabSaver makes it a perfect sawing tool for one person to
operate and transport. The saw combines innovative features,
top quality components, and a committed attention to state-of-
the-art manufacturing.
For peak performance, the SlabSaver has been engineered to
operate a powerful 6.5 HP Gasoline engine and 10" diameter
diamond blades. This special design allows for fast/clean cuts
in different materials at depths from 1/4" to 3 1/4".
Figures 3 shows the location of the basic controls or components,
for the FCG1 Concrete Saw. Listed below is a brief explanation
of each control or component
1. Hand Grips/Handlebar – When operating the saw, place
both hands on each grip to maneuver the saw.
2. Adjustable Handle – Set to comfortable operating position.
3. Rear Guide – Rear guide wheel drops into cut to assist in
straight tracking.
4. Air Filter – Prevents dirt and debris from entering the engine
air intake. Keep cleaned and replace when necessary.
5. Recoil Starter Handle – Pull to engage and start the
engine.
6. Recoil Starter Assembly – Engages the engine when
the handle is pulled and rewinds the starter rope when the
handle is released.
7. Wheels/Carraige Assembly – Heavy-duty polyurethane
wheels with permanently sealed ball bearings.
8. Diamond Blade – 10" blade capacity. 10" diameter
provides for 1/4" to 3 1/4" depth of cut.
9. Blade Guard – Covers saw blade and flips up to allow
blade to be changed.
10. BeltTension Adjuster – Adjusts belt tension.
11. Front Pointer – Assists in straight tracking.
12. Front Pointer Arm – Stows up for storage and pivots down
for use.
13. Depth Adjust Disk – Turn disk clockwise or counter-
clockwise to adjust the cutting depth up or down.
14. Fuel Tank – Use unleaded gasoline. Do not overfill.
15. Shift Knob – Moves Depth Stop Rod in or out of keyhole
slot.
16. V-Belt Cover – Remove this cover to gain access to the V-
belt. NEVER operate the saw with this cover removed.
17. Arbor Shaft Grease Zerks – Conveniently located for
lubrication.
18. On/Off Switch – Turn to the "ON" position to allow engine
to be started and turn to the "OFF" position to shut the
engine off.
19. Handle Lock – Lock handle height to a comfortable
operating position.
20. Screw Plunger – Line up bottom edge of Depth Stop Rod
on Screw Plunger across from desired depth line mark.
21. Depth Stop Rod – Holds blade above working surface or
allows blade to cut into working surface at specified depth.
CONTROLS & COMPONENTS
The jig-welded reinforced heavy gauge steel frame and chassis
assembly are designed to eliminate operational bending and/or
flex that would lead to diminished blade performance. Also, the
frame's general weight-to-strength ratio and center mounted
blade design ensure accurate tracking in the cut.
A robust blade shaft bearing assembly ensures minimal flutter
and shaft harmonics providing the most advantageous
conditions for a diamond blade at operating speeds.
Heavy-duty front and rear axles, polyurethane wheels with
permanently sealed ball bearings, and solid undercarraige
assembly provide years of reliable use. The SlabSaver
incorporates an innovative PosiLok raise/lower control assembly
that provides fingertip control of blade orientation, infinitely
adjustable locking blade depth control, and depth feed gauge.
Retractable front & rear pointers with "tracking wheels" are
provided to support precise straight sawing. This system permits
the operator to quickly adjust the blade cutting depth and
safeguard against "blade-creep" during sawing operations. For
operator comfort and ease of transportation & storage, an
adjustable locking handle bar is provided.
Operator control of the saws is safely accomplished with
adjustable handle bars, and a conveniently oriented raise/lower
lever and depth adjustment wheel.
For maximum performance and return on investment use:
Diamond Blades.
ENGINE
Pages 22-24 highlight fundamental aspects of engine inspection
and starting. Refer to the engine Owner's Manual for specific
instructions regarding operation, service and maintenance.

FCG1 CONCRETE SAW — OPERATION & PARTS MANUAL — REV. #1 (10/08/02) — PAGE 15
FCG1 CONCRETE SAW—FAMILIARIZATION/ CONTROLS & COMPONENTS
Figure 3. FCG1 Concrete Saw

PAGE 16 — FCG1 CONCRETE SAW— OPERATION & PARTS MANUAL — REV. #1 (10/08/02)
Figure 4. Engine Controls and Components
INITIAL SERVICING
The engine (Figure 4) must be checked for proper lubrication and
filled with fuel prior to operation. Refer to the manufacturers engine
manual for instructions & details of operation and servicing.
1. Fuel Filler Cap – Remove this cap to add unleaded
gasoline to the fuel tank. Make sure cap is tightened
securely. DO NOT over fill.
6. Choke Lever – Used in the starting of a cold engine, or in
cold weather conditions. The choke enriches the fuel
mixture.
7. Air Cleaner – Prevents dirt and other debris from entering
the fuel system. Remove wing-nut on top of air filter
cannister to gain access to filter element.
Operating the engine without an air
filter, with a damaged air filter, or a
filter in need of replacement will
allow dirt to enter the engine, causing
rapid engine wear.
8. Spark Plug – Provides spark to the ignition system. Set
spark plug gap to 0.6 - 0.7 mm (0.028 - 0.031 inch) Clean
spark plug once a week.
9. Muffler – Used to reduce noise and emissions.
Engine components can generate extreme heat.
To prevent burns, DO NOT touch these areas
while the engine is running or immediately after
operating. NEVER operate the engine with the muffler removed.
10. Fuel Tank – Holds unleaded gasoline. For additional
information refer to engine owner's manual.
DANGER
WARNING
FCG1 CONCRETE SAW— BASIC ENGINE
Adding fuel to the tank should be done only when
the engine is stopped and has had an opportunity
to cool down. In the event of a fuel spill, DO NOT attempt to start the
engine until the fuel residue has been completely wiped up, and the
area surrounding the engine is dry.
2. Throttle Lever – Used to adjust engine RPM speed (lever
advanced forward SLOW , lever back toward operator
FAST ).
3. Engine ON/OFF Switch – ON position permits engine
starting, OFF position stops engine operations.
4. Recoil Starter (pull rope) – Manual-starting method. Pull
the starter grip until resistance is felt, then pull briskly and
smoothly.
5. Fuel Valve Lever – OPEN to let fuel flow, CLOSE to stop
the flow of fuel.
NOTE
(HONDA ENGINE SHOWN)

FCG1 CONCRETE SAW — OPERATION & PARTS MANUAL — REV. #1 (10/08/02) — PAGE 17
Figure 7. Pulley Alignment
3. Check V-belt tension by using a tension meter (6.0 - 9.0 lbs.)
against the inside belt at a mid point between the two pulleys,
or by deflecting the center belt at a mid point 3/8" (10 mm) to
1/2" (13 mm). See Figure 8.
FCG1 CONCRETE SAW — GUARDS, COVERS AND V-BELTS
NEVER operate the saw without blade guards
and covers in place. DO NOT operate with
the front of the blade guard raised. The blade
exposure cannot exceed 180 degrees during
operation. Adhere to the safety guidelines of
the American National Standards Institute
(ANSI) B7.1 and B7.5.
WARNING
Figure 5. Blade Guard
CHECK the following on the"blade guard" (Figure 5):
■ Ensure the capacity of the blade guard matches the diameter
of your diamond blade.
■ Check that the guard is bolted firmly upon the saw frame.
■ Check that the spring tensioned front cover of the guard is
firmly seated with the rear section of the guard, and there are
no gaps. NEVER lift the blade guard while cutting.
Figure 6.V-Belt Cover
CAUTIONCAUTION
CAUTIONCAUTION
CAUTION
NEVER attempt to check
the V-belt with the engine
running. Severe injury can
occur. Keep fingers, hands,
hair and clothing away from
all moving parts.
V-belt Alignment and Tensioning
This concrete saw is equipped with a premium V-belt that has
been aligned and tensioned by factory personnel. The V-belt
must be aligned and tensioned for proper operation of the saw.
Use the following procedure to check the alignment of V-belt:
1. Remove the bolts that secure the V-belt cover (Figure 6) to
the saw frame.
2. Check uniform parallelism (Figure 7) of V-belt and pulley
(sheaves). Use a straight-edge or machinist's square against
both pulleys and adjust both pulleys until equally aligned.
V-belt Check
A worn or damaged V-belt can adversely affect the performance
of the saw. If the V-belt is defective or worn, replace and the V-belt
as outlined on page 19.

PAGE 18 — FCG1 CONCRETE SAW— OPERATION & PARTS MANUAL — REV. #1 (10/08/02)
FCG1 CONCRETE SAW — GUARDS, COVERS AND V-BELTS
Figure 8. V-Belt Tension Check
4. DO NOT over or under tighten the V-belt. Severe damage
can occur to the saw and engine crank shaft if the belt is
over-tensioned. A decrease of power to the blade and poor
performance will result if the belt is under-tensioned (loose
on pulleys).
If the V-belt become worn or damaged, replace it with P/N 15082
(Gates/Optibelt 3VX335).
3. Tighten the adjusting hex screw (4) while holding the engine
in place to maintain pulley alignment. (a screwdriver can be
used as a lever at the rear belt guard mounting boss to hold
the back of the engine while adjusting V-belt tension.)
4. Re-tighten the locking nut (3).
5. With V-belt held in proper alignment, (engine parallel with
the frame), re-tighten the 4 engine mounting hex screws.
Verify that all hex screws are properly tightened.
To Tighten the V-belt:
NOTE
V-belt alignment must be
rechecked after adjusting belt
tension.
To Remove and Replace the V-belt:
1. Remove the 3 hex screws holding the V-belt guard and
remove the guard.
2. Loosen the 4 engine mounting hex screws. (item 2, Figure 9)
3. Loosen locking nut on the V-belt tension adjuster (item 3,
Figure 9). Loosen the tension on the V-belt by turning the
tension adjuster hex screw (item 4, Figure 9).
4. Pull the engine ahead to provide slack in the V-belt.
5. Loosen the 4 arbor shaft hex screws, (item 1, Figure 9).
Figure 9. V-Belt Tension Adjust
1. With V-belt guard removed, loosen the 4 engine mounting
hex screws. (items 2 Figure 9)
2. Loosen locking nut on the V-belt tension adjuster, (3 ).
6. Remove the two outer arbor shaft hex screws allowing the
outside of the shaft to drop, (B in Figure 10), allowing removal
of the V-belt.
7. Reinstall new V-belt.
8. Re-install and tighten arbor shaft hex head screws.
9. With V-belt held in proper alignment, re-tighten the 4 engine
mounting hex screws. (Follow V-belt tightening procedures.)
10. Re-install belt guard with 3 hex screws.
Figure 10.V-Belt Removal

FCG1 CONCRETE SAW — OPERATION & PARTS MANUAL — REV. #1 (10/08/02) — PAGE 19
FCG1 CONCRETE SAW — BLADES
WARNING
Failure to thoroughly inspect the diamond
blade (Figure 11) for operational safety
could result in damage to the blades or
the saw and may cause injury to the user
or others in the operating area.
Figure 11. Diamond Blade
2. Edge of the Steel Core - Check the diameter edge for
discoloration (blue oxidation) indicating an overheating
condition caused by insufficient cooling water/air.
Overheating of blades may lead to loss of core tension and/
or increase the possibility for blade failure. Make sure the
steel core's width is uniform about the rim of the blade, and
not succumbing to an "under-cutting" condition brought
about by highly abrasive material or improper under-cutting
core protection.
3. Directional Arrow - Ensure that the blade is oriented
properly on the blade shaft for sawing. Reference the
directional arrow on the blade and place it so the direction
of rotation "downcuts" with the turn of the shaft.
4. Diamond Segment or Rim - Ensure there are no cracks,
dings, or missing portions of the diamond segment/rim. DO
NOT
use a blade that is missing a segment or a portion
of the rim.
Damaged and /or missing segments/rims may
cause damage to your saw or injury to the user or others in
the operating area.
5. Specifications - Ensure that the blade specifications, size,
and diameter properly match up to sawing operations. The
saw has been designed to saw DRY, using ambient air for
blade cooling. Utilizing a blade not matched properly to the
task may result in poor performance and/or blade damage.
6. Arbor Hole - It is essential that the arbor hole diamter
properly matches the blade, and that it is free from distortion.
Correct blade flanges (collars) must be used. The inside
face of the flanges must be clean and free of debris. An out-
of-round arbor condition will cause damage to the blade
and the saw.
7. MAX RPM - This RPM reference is the maximum safe
operating speed for the blade selected. NEVER exceed the
max RPM on the diamond blade. Exceeding the maximum
RPM is dangerous and may cause poor performance and
may damage the blade. Optimum operation of the FCG1
Concrete Saw is achieved with a 10" blade at 6000 RPM.
SAW BLADES
Saw blades, or cutting disks are available in either an abrasive
design or as diamond blades. Either blade will work on the
FCG1 Concrete Saw, however, diamond blades are
recommended. Diamond blades are available specifically
designed for cutting green concrete, cured concrete, asphalt, as
well as a "V-Cut" blade use for decorative work. Ask your dealer
about your specific cutting application.
SAW BLADE INSPECTION
1. Stress Relief Holes (Gullets) - Check the steel core for
cracks that may have propagated from the slots and/or
gullets. Cracks indicate extreme fatigue failure and if sawing
continues, catastrophic failure will occur.
For maximum performance and return on investment use:
Diamond Blades.

PAGE 20 — FCG1 CONCRETE SAW— OPERATION & PARTS MANUAL — REV. #1 (10/08/02)
FCG1 CONCRETE SAW — BLADE PLACEMENT
WARNING
Failure to thoroughly inspect the diamond
blade for operational safety could result in
damage to the blades or the saw and may
cause injury to the user or others in the
operating area.
1. Blade Guard - Pivot the blade guard front cover all the way
back. The guard tension spring will keep the front cover in
position.
2. Blade Hex Nut - Unscrew the blade shaft nut (right side
loosens clockwise and tightens counter-clockwise while the
left side loosens counter-clockwise and tightens clockwise.
DO NOT overtighten the nut (approximately 45-50 ft. lb/61-
68 N/m) when finalizing the assembly.
3. Outside Blade Flange (Collar) - Ensure that the outside
blade flange is placed flush against the diamond blade.
The inside surface of the flange must be free of debris and
permit a tight closure on the surface of the blade core.
5. Inner Flange (Collar) - This flange is fixed upon the blade
shaft. The inside surface of the flange must be free of debris
and permit a tight closure on the surface of the blade.
Figure 12. Diamond Blade Placement
The following steps should be
accomplished before using the
FCG1 Saw on any cutting surface.
NOTE
4. Diamond Blade - Ensure that the proper diamond blade
has been selected for the job. Pay close attention to the
directional arrows on the blade. The blade's operating
directional arrows must point in a "down-cutting" direction
to perform correctly. When placing the blade onto the blade
shaft, ensure the arbor hole of the blade matches the
diameter of the shaft.
WARNING
Dropping or forcing the
blade onto the cutting
surface can severely
damage the diamond blade and may
cause serious damage to the saw and
bodily harm.
Blade Removal and Replacement
1. Set the engine ON/OFF switch to the
"OFF" position.
2. Place the FCG1 Saw on a stable level working surface.
3. Ensure the blade is raised and the raise/lower rod is locked
into position.
4. Raise the blade by appling a downward pressure on the
handlebars to raise the blade and allow the raise/lower rod
to drop into the "raised-position" slot.
Blade Selection
The FCG1 Concrete Saw has a capacity for a 10" blade. This
allows a cutting range from 0" to 3 1/4". Operating blade speed
is 6000 RPM.
When removing or installing a
diamond blade, please note that the
blade retaining nuts are left and right-
hand threaded.
NOTE
5. Lift up the blade guard cover (item 1 Figure 12) to gain
access to the diamond blade.