Stow SCT46, SCT36 User Manual
PARTS AND OPERATION MANUAL
WALK-BEHIND TROWEL
SCT36 AND SCT46
SERIES
MODEL #
SERIAL #
Revision #4 (04/02/07)
STOW CONSTRUCTION EQUIPMENTSTOW CONSTRUCTION EQUIPMENT
STOW CONSTRUCTION EQUIPMENT
STOW CONSTRUCTION EQUIPMENTSTOW CONSTRUCTION EQUIPMENT
A DIVISION OF MULTIQUIP INC.
POST OFFICE BOX 6254
CARSON, CA 90749
310-537-3700 • 888-252-SCT SERIES[888-252-7869]
FAX: 310-537-1986 • FAX: 800-556-1986
E-MAIL: stow@multiquip.com • WWW: stowmfg.com
PARTS DEPARTMENT:
800-427-1244
FAX: 800-672-7877
SERVICE DEPARTMENT/TECHNICAL ASSISTANCE:
800-478-1244
FAX: 310-631-5032
P/N 21220
NOTE PAGE
SCT SERIES WALK-BEHIND TROWEL — PARTS & OPERATION MANUAL — REV. #4 (04/02/07) — PAGE 3
SCT SERIES TROWEL— TABLE OF CONTENTS
Here's How To Get Help ............................................ 3
Table Of Contents ..................................................... 4
Parts Ordering Procedures ....................................... 5
Training Checklist ...................................................... 6
Daily Pre-Operation Checklist ................................... 7
Safety Message Alert Symbols .............................. 8-9
Rules For Safe Operation .................................. 10-11
Operation And Safety Decals .................................. 12
Specifications (Trowel) ............................................ 13
Specifications (Engines).......................................... 14
Specifications (Trowel Weights) .............................. 14
General Information ................................................ 15
SCT SERIESTROWEL
Controls and Components ...................................... 16
Basic Engine ........................................................... 17
Assembly and Installation .................................. 18-19
Pre-Inspection .................................................... 20-21
Initial Start-Up (Gasoline Engine) ......................22-23
Operation ................................................................ 24
Options .................................................................... 25
Maintenance (Engine)........................................ 26-27
Maintenance (Trowel)) ....................................... 28-32
Troubleshooting (Trowel) ................................... 33-34
Troubleshooting (Engine)................................... 34-35
Explanation of Codes in Remarks Column ............. 36
Suggested Spare Parts ........................................... 37
Decal Locator ..................................................... 38-39
Standard Handle Assembly ............................... 40-41
4-Blade Spider Assembly ................................... 42-43
Gearbox Assembly ............................................. 44-45
Guard Ring Assembly ........................................46-47
Stabilizer Ring Assembly ................................... 48-49
Engines Assembly .............................................. 50-51
Blades & Adjustment Fixture Assembly. ............ 52-53
HONDA GX160K1QX2ENGINE
Air Cleaner Assy. ................................................ 54-55
Camshaft Assy. .................................................. 56-57
Carburetor Assy. ................................................ 58-59
Control Assy. ......................................................60-61
Crankcase Cover Assy. ...................................... 62-63
Crankshaft Assy. ................................................64-65
Cylinder Barrel Assy. .......................................... 66-67
Cylinder Head Assy. ........................................... 68-69
Fan Cover Assy. ................................................. 70-71
Flywheel Assy..................................................... 72-73
Fuel Tank Asssembly ......................................... 74-75
Ignition Coil Asssembly ...................................... 76-77
Muffler Asssembly .............................................. 78-79
Piston Asssembly ............................................... 80-81
Recoil Starter Asssembly ................................... 82-83
Gaskets ................................................................... 85
Engine Labels .................................................... 86-87
HONDA GX240K1QA2ENGINE
Air Cleaner Asssembly ....................................... 88-89
Camshaft Asssembly ......................................... 90-91
Carburetor Asssembly .......................................92-93
Control Asssembly ............................................. 94-95
Crankcase Cover Asssembly ............................. 96-97
Crankshaft Asssembly ....................................... 98-99
Cylinder Barrel Asssembly .............................100-101
Cylinder Head Asssembly ..............................102-103
Fan Cover Asssembly .................................... 104-105
Flywheel Asssembly ....................................... 106-107
Fuel Tank Asssembly ..................................... 108-109
Ignition Coil Asssembly ..................................110-111
Muffler Asssembly .......................................... 112-113
Piston Asssembly ...........................................114-115
Recoil Starter Asssembly ...............................116-117
Engine Labels ................................................ 118-119
Honda GX340K1QAP2 Engine
Air Cleaner Assembly..................................... 120-121
Camshaft Assembly ....................................... 122-123
Carburetor Assembly ..................................... 124-125
Crankcase Cover Assembly ........................... 126-127
Control Assembly ........................................... 128-129
Cylinder Barrel Assembly ............................... 130-131
Cylinder Head Assembly ................................ 132-133
Crankshaft Assembly .....................................134-135
Fan Cover Assembly ...................................... 136-137
Flywheel Assembly ........................................ 138-139
Fuel Tank Assembly ....................................... 140-141
Ignition Coil Assembly .................................... 142-143
Muffler Assembly ........................................... 144-145
Piston Assembly ............................................. 146-147
Recoil Starter Assembly................................. 148-149
Engine Labels ................................................ 150-151
Terms and Conditions of Sale Parts ..................... 152
PAGE 4 — SCT SERIES WALK-BEHIND TROWEL— PARTS & OPERATION MANUAL — REV. #4 (04/02/07)
SCT SERIES TROWEL— PARTS ORDERING PROCEDURES
When ordering parts,
please supply the following information:
❒❒
❒ 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:
❒❒
✓ FedEx or UPS Ground
✓ FedEx or UPS Second Day or Third Day
✓ FedEx or UPS Next Day
✓ Federal Express Priority One
✓ DHL
✓ Tr u ck
Note: Unless otherwise indicated by customer, all
orders are treated as “Standard Orders”, and will
ship within 24 hours. We will make every effort to
ship “Air Shipments” the same day that the order is
received, if prior to 2PM west coast time. “Stock
Orders” must be so noted on fax or web forms.
Here’s how to get help...
Please have the model and serial number
on hand when calling.
STOW MAIN OFFICE
18910 Wilmington Ave. 800-421-1244
FAX:
Carson, CA 90746
Email: stow@stowmfg.com
Internet: www.stowmfg.com
SALES DEPARTMENT
310-661-4242 Fax: 310-604-9237
877-289-7869 (877-BUY-STOW)
PARTS DEPARTMENT
800-427-1244
310-537-3700
SERVICE DEPARTMENT
800-478-1244
310-537-3700
TECHNICAL ASSISTANCE
800-478-1244
WARRANTY DEPARTMENT
800-421-1244,
310-537-3700,
EXT.
EXT.
279
279
310-537-3927
FAX:
800-672-7877
FAX:
310-637-3284
FAX:
310-537-4259
FAX:
310-631-5032
FAX:
310-537-1173
Place Your Parts Order Via Web or Fax
For Even More Savings!
(Domestic USA Dealers Only)
Extra Discounts!
All parts orders which include complete part numbers and
are received by our automated web parts order system, or
by fax qualify for the following extra discounts:
Ordered Standard Stock orders
via orders ($750 list and above)
Fax 3% 10%
Web 5% 10%
Special freight allowances
when you order 10 or more
line items via Web or Fax!**
FedEx Ground Service
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.
NOTE: DISCOUNTS ARE SUBJECT TO CHANGE
at no charge for freight
STOW CONSTRUCTION EQUIPMENTSTOW CONSTRUCTION EQUIPMENT
STOW CONSTRUCTION EQUIPMENT
STOW CONSTRUCTION EQUIPMENTSTOW CONSTRUCTION EQUIPMENT
A DIVISION OF MULTIQUIP INC.
POST OFFICE BOX 6254 CARSON, CA 90749
888-252-STOW [888-252-7869] 310-537-3700
FAX: 310-537-1986 FAX: 800-556-1986
E-MAIL: stow@multiquip.com INTERNET: www.stowmfg.com
SCT SERIES WALK-BEHIND TROWEL — PARTS & OPERATION MANUAL — REV. #4 (04/02/07) — PAGE 5
Direct TOLL-FREE access
to our Parts Department:
Toll-free nationwide — 800-427-1244
Toll-free FAX — 800-6-PARTS-7
(800/672-7877)
SCT SERIES TROWEL— TRAINING CHECKLIST
TRAINING CHECKLIST
This checklist will lists some of the minimum requirements for
machine maintenance and operation. Please feel free to detach
it and make copies. Use this checklist whenever a new operator
is to be trained or it can be used as a review for more experienced
operator’s.
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Operator _________________________________________ Trainee __________________________________________
COMMENTS:
PAGE 6 — SCT SERIES WALK-BEHIND TROWEL— PARTS & OPERATION MANUAL — REV. #4 (04/02/07)
SCT SERIES TROWEL— DAILY PRE-OPERATION CHECKLIST
DAILY PRE-OPERATION CHECKLIST
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COMMENTS:
TSILKCEHCNOITAREPO-ERPYLIAD
SCT SERIES WALK-BEHIND TROWEL — PARTS & OPERATION MANUAL — REV. #4 (04/02/07) — PAGE 7
SCT SERIES TROWEL— SAFETY MESSAGE ALERT SYMBOLS
FOR YOUR SAFETY AND THE SAFETY OF OTHERS!
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.
HAZARD SYMBOLS
NOTE
This Owner's Manual has been developed to provide
complete instructions for the safe and efficient operation
of the SCT SERIESWALK-BEHIND TROWEL. For
engine maintenance information, please refer to the
engine manufacturers instructions for data relative to its
safe operation.
Before using this WALK-BEHIND TROWEL, ensure
that the operating individual has read and
understands all instructions in this manual.
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.
Lethal Exhaust Gases
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.
Explosive Fuel
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.
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.
Potential hazards associated with trowel operation will be
referenced with "
this manual, and will be referenced in conjunction with Safety
"
Message Alert Symbols
Hazard Symbols
".
" which appear throughout
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,
and
clothing
prevent injury.
hands, hair
away from all moving parts to
PAGE 8 — SCT SERIES WALK-BEHIND TROWEL— PARTS & OPERATION MANUAL — REV. #4 (04/02/07)
SCT SERIES TROWEL— SAFETY MESSAGE ALERT SYMBOLS
Accidental Starting
ALWAYS place the engine ON/OFF switch
in the OFF position, when the trowel 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.
This
NOTE
property, or the surrounding
environment could be damaged if
you do not follow instructions.
walk-behind trowel
, other
Respiratory Hazard
ALWAYS wear approved respiratory
protection.
Sight and Hearing hazard
ALWAYS wear approved eye and hearing
protection.
Equipment Damage Messages
Other important messages are provided throughout this manual
to help prevent damage to your trowel, other property, or the
surrounding environment.
SCT SERIES WALK-BEHIND TROWEL — PARTS & OPERATION MANUAL — REV. #4 (04/02/07) — PAGE 9
SCT SERIES TROWEL — RULES FOR SAFE OPERATION
■
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 SCT SERIESwalk-behind trowel.
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 trowel without proper protective clothing,
shatterproof glasses, steel-toed boots and other protective
devices required by the job.
NEVER touch the hot exhaust
manifold, muffler or cylinder. Allow
these parts to cool before
servicing the trowel.
■
High Temperatures – Allow the engine to cool before adding
fuel or performing service and maintenance functions. Contact
hot!
with
■
The engine of this trowel requires an adequate free flow of
cooling air. NEVER operate the trowel in any enclosed or
components can cause serious burns.
narrow area where free flow
of the air is restricted. If the
air flow is restricted it will
cause serious damage to
the trowel's engine and
may cause injury to people.
Remember the trowel's
engine gives off
carbon monoxide gas.
DEADLY
■
■
■
NEVER operate this equipment when not feeling
well due to fatigue, illness or taking medicine.
■
NEVER operate the trowel under the
influence or drugs or alcohol.
■
NEVER use accessories or attachments, which are not
recommended by SCT SERIESfor this equipment. Damage
to the equipment and/or injury to user may result.
■
Manufacture does not assume responsibility for any accident
due to equipment modifications.
■
Whenever necessary, replace nameplate, operation and
safety decals when they become difficult to read.
■
ALWAYS check the trowel for loosened screws, nuts, or bolts
before starting.
■
■
■
ALWAYS refuel in a well-ventilated area, away from sparks
and open flames.
ALWAYS use extreme caution when
working with flammable liquids. When
refueling, stop the engine and allow it to
cool.
NEVER
machine. Fire or explosion could result from
fuel vapors
engine.
NEVER operate the trowel in an explosive atmosphere or
near combustible materials. An explosion or fire could result
causing severe
Topping-off the fuel tank filler port is dangerous, as it tends to
spill fuel.
smoke
around or near the
, or if fuel is spilled on a
bodily harm or even death.
hot!
PAGE 10 — SCT SERIES WALK-BEHIND TROWEL— PARTS & OPERATION MANUAL — REV. #4 (04/02/07)
SCT SERIES TROWEL — RULES FOR SAFE OPERATION
■
DO NOT operate this trowel unless all guards and safety
devices are attached and in place. See Pages 16 and 17.
■
ALWAYS use proper lifting techniques when moving the
trowel.
■
ALWAYS check to make sure that the operating area is clear
before starting the engine.
■
ALWAYS test the safety
operating the trowel.
■
NEVER place your
while starting or operating this equipment.
■
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
operating the trowel.
■
NEVER leave the machine
■
Moving Parts – Shut down the engine before performing
service or maintenance functions. Contact with moving parts
can cause serious injury.
Maintenance Safety
■
Disconnect the spark plug wires before attempting any type
of service.
safety stop switch
feet
or
hands
inside the guard rings
rotating
or
unattended
devices before
moving parts
while running.
while
■
■
■
■
■
CAUTIONCAUTION
CAUTION
CAUTIONCAUTION
Emergencies
Keep the trowel in proper running condition.
Make sure that there is no buildup of concrete, grease, oil or
debris on the trowel.
Fix damage to the trowel immediately and always replace
broken parts.
Dispose of hazardous waste properly. Examples of potentially
hazardous waste are used
High Temperatures – Allow the machine and engine to
cool
before adding fuel or performing service and
maintenance functions. Contact with
cause serious burns.
■
ALWAYS know the location of the nearest
fire extinguisher
the location of the nearest telephone. Also
know the phone numbers of the nearest
ambulance, doctor
This information will be invaluable in the
case of an
motor oil, fuel
and
emergency
and
fuel filters
hot!
components can
first aid kit
and
fire department
.
.
. Know
.
■
Securely support any machine components that must be
raised.
■
NEVER lubricate components or attempt service on a running
machine.
■
DO NOT use food or plastic containers to dispose of
hazardous waste.
■
DO NOT pour
down a drain or into any water source.
waste, oil
or
fuel
directly onto the ground,
SCT SERIES WALK-BEHIND TROWEL — PARTS & OPERATION MANUAL — REV. #4 (04/02/07) — PAGE 11
SCT SERIES TROWEL — OPERATION AND SAFETY DECALS
Machine Safety Decals
The SCT SERIESwalk-behind trowel is equipped with a number of safety decals. These decals are provided for operator safety and
maintenance information. Figure 1 below illustrates these decals as they appear on the machine. Should any of these decals
become unreadable, replacements can be obtained from your dealer.
Figure 1. SCT SERIESTrowel Decals
PAGE 12 — SCT SERIES WALK-BEHIND TROWEL— PARTS & OPERATION MANUAL — REV. #4 (04/02/07)
Side View
SCT SERIES TROWEL — SPECIFICATIONS (TROWEL)
Top View
Figure 2. SCT SERIESTrowel Dimensions
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NOTE:
1. Sound pressure is a weighted measure. Measured at the
operators ear position while the walk-behind trowel is
operating at full throttle on concrete in a manner most often
experienced in “
normal
” circumstances. Sound pressure
may vary depending upon the condition of the concrete.
Hearing protection is always recommended.
2. The vibration level indicated is the maximum RMS (Root
Mean Square) value obtained at the handle grip while
operating the walk-behind trowel on curing concrete in a
manner most often experienced in “
Values were obtained from all three axes of motion. The
values shown represent the maximum RMS value from
these measurements.
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2
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)
normal
” circumstances.
SCT SERIES WALK-BEHIND TROWEL — PARTS & OPERATION MANUAL — REV. #4 (04/02/07) — PAGE 13
SCT SERIES TROWEL— SPECIFICATIONS (ENGINES)
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PAGE 14 — SCT SERIES WALK-BEHIND TROWEL— PARTS & OPERATION MANUAL — REV. #4 (04/02/07)
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SCT SERIES TROWEL— GENERAL INFORMATION
SCT SERIESWalk-Behind Trowel Familiarization
This walk-behind trowel is designed for the
finishing
Take a walk around the trowel. Take notice of all the major
components (see Figure 3, pages 16 and 17) like the engine,
blades, quick adjust control, (on those equiped models), air
cleaner, centrifugal stop switch etc. Check that there is always
oil in the engine.
Read
be found throughout this manual and on the trowel. Keep all
safety information in good, readable condition. Operators should
be well trained on the operation and maintenance of the trowel.
Before using your trowel, test it on a flat watered down section of
finished concrete that is free of any debris and other objects.
This trial test run will increase your confidence in using the trowel
and at the same time it will familiarize you with the trowel’s
controls. In addition you will understand how the trowel handles
under actual conditions.
Engines
The 36" trowel is available with a 5.5 HP HONDA or an 8.0 HP
HONDA gasoline engine while the 46" trowel is available with
an 8.0 HP HONDA or an 11.0 HP HONDA gasoline engine.
Refer to the engine owner’s manual for instructions regarding
the operation and maintenance of your engine. The engine
manual is included with your trowel at the time of shipment.
Please contact your nearest Multiquip Dealer for a replacement
should the original manual disappear or become unusable.
Drive System
Power is transferred from the engine to the gearbox input shaft
via a V-belt or pulley drive system. The pulley engages using a
centrifugal clutch.
Gearbox
The
to the
rotational speed of the trowel and is equipped with two shafts
(input and output).
of concrete slabs.
all the safety instructions carefully. Safety instructions will
gearbox
is located beneath the engine and transfers power
rotor
or
spider
assembly. The gearbox controls the
floating
and
Blades
The blades of the trowel finish the concrete as they are rotated
around the surface. Blades are classified as
(8 inches wide),
inches wide). This trowel comes equipped with four blades
per rotor equally spaced in a radial pattern and attached to
vertical rotating shaft by means of a
Centrifugal Stop Switch
In the event of a trowel runaway condition, (operator releases
the handle), a
and bring the trowel to a halt.
CAUTIONCAUTION
CAUTION
CAUTIONCAUTION
Moving the SCT SERIESWalk-Behind Trowel
This walk-behind trowel is designed to be moved and handled
in several ways. One way to lift the trowel is to use an
lifting tube
tube, always use
These models have a
be attached, allowing a forklift or crane to lift the trowel up onto a
slab of concrete. Use a lifting device of adequate lifting capacity
to lift the trowel.
Training
For proper training, please use the “TRAINING CHECKLIST”
located in the front of this manual (Page 6). This checklist will
provide an outline for an experienced operator to provide training
to a new operator.
combination
float
(10 or 8 inches wide), and finish (6
spider assembly.
centrifugal stop switch
NEVER attempt to
ALWAYS get the assistance of another
person to help lift the trowel or use a crane
or lifting device to move the trowel.
. See page 24, Figure 20. When using the lifting
two persons
lifting bail
to lift the trowel.
installed so strap or chain can
will stop the engine
lift
the trowel by yourself.
optional
Spider
The vertical output shaft of the gearbox connects to a cast hub
spider
called the
that are used for attachment of blades or other accessories.
Remember as the gearbox output shaft rotates so does the spider
assembly.
SCT SERIES WALK-BEHIND TROWEL — PARTS & OPERATION MANUAL — REV. #4 (04/02/07) — PAGE 15
. The spider has 4 arms that extend outward
SCT SERIES TROWEL— CONTROLS AND COMPONENTS
Figure 3. SCT SERIESWalk-Behind Trowels
Figures 3 shows the location of the basic controls or components,
for the SCT SERIEStrowel. Listed below is a brief explanation of
each control or component
1. Pitch Control - Turn this "Star Wheel" clockwise for increase
blade pitch, and counter-clockwise for decrease blade pitch
2. Hand Grip/Handle Bar – When operating the trowel, place
both hands on each grip to maneuver the trowel. Replace
hand grips when they become worn or damaged.
3. Throttle – Controls engine speed.
4. Engine – This trowel uses a Honda gasoline engine.
5. Centrifugal Safety Stop Switch – In the event the operator
loses control of the trowel, this switch will shut-down the
engine.
6. Trowel Lifting Point – Use a hoist, forklift, or other suitable
lifting device to lift the trowel on and off the concrete slab.
7. Engine ON-OFF Switch– Turn to the "ON" position for
starting the engine and to the "OFF" position to prevent the
engine from starting.
8. Main Tube - Houses throttle control and pitch cables.
9. Guard Ring- NEVER! put hands or feet inside guard ring.
10. V-Belt Cover – Remove this cover to gain access to the V-
belt. NEVER operate the trowel with this cover removed.
11. Trowel Arm – NEVER operate the trowel with a bent, broken
or out of adjustment trowel arm. If the blades show uneven
wear patterns or some blades wear out faster than others,
the trowel arm may need to be adjusted. Use the trowel
arm adjustment tool P/N 1817 to adjust the trowel arms.
12. Blades – This trowel is equipped with combination blades.
These blades are versatile and should take care of most
troweling needs. In addition float discs can be attached to
the trowel arms that will allow the trowel to float on "wet"
concrete.
13. Stabilizer Ring – Reduces trowel arm vibration. Helps
stabilize trowel arm.
PAGE 16 — SCT SERIES WALK-BEHIND TROWEL— PARTS & OPERATION MANUAL — REV. #4 (04/02/07)
SCT SERIES TROWEL— BASIC ENGINE
Figure 4. Engine Controls and Components
INITIAL SERVICING (ENGINE)
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.
DANGER
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
SLOW
advanced forward
FAST
).
, lever back toward operator
5. Fuel Valve Lever – OPEN to let fuel flow, CLOSE to stop
the flow of fuel.
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 air intake system. Remove wing-nut on top of air filter
cannister to gain access to filter element.
NOTE
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.
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
WARNING
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.
10. Fuel Tank – Holds unleaded gasoline. For additional
information refer to engine owner's manual.
SCT SERIES WALK-BEHIND TROWEL — PARTS & OPERATION MANUAL — REV. #4 (04/02/07) — PAGE 17
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.
SCT SERIES TROWEL — ASSEMBLY AND INSTALLATION
Assembly and Installation
Before the trowel can be put into operation there are some
components that must be installed before the trowel can be used.
This section provided general instructions on how to install those
components.
Handle Tube Installation
1. Install the
The mounting hardware should be contained in the shipping
container.
handle tube
to the gearbox as shown in (Figure 5).
2. Connect the throttle cable to the engine. (Figure 7). (The air
cleaner housing may have to be removed to provide access
for throttle cable installation.) When connecting the cable
housing, make sure that no more than
cable housing protrudes past the housing clamp on the
engine.
1/4" (6.4mm)
Figure 7. Throttle Cable Connection
of the
Figure 5. Handle Tube Installation
Throttle Cable Installation
1. Set the
from the operator).
throttle
(Figure 6) to the idle position (lever away
3. Tighten cable clamp screw.
4. After the cable has been installed on the engine, work the
throttle lever to verify the throttle cable is at the proper
length. Adjust the cable as necessary.
5. Reinstall the air cleaner housing if previously removed.
Figure 6. Throttle
PAGE 18 — SCT SERIES WALK-BEHIND TROWEL— PARTS & OPERATION MANUAL — REV. #4 (04/02/07)
Safety Stop Wire
SCT SERIES TROWEL — ASSEMBLY AND INSTALLATION
Locate the
SAFETY STOP
(Figure 8) and connect it to the
wire protruding from the handle tube
tail wire on the engine. Test the
safety stop switch to insure proper operation.
Figure 8. Engine Safety Stop Wire Connection
Figure 10. Blade Pitch Cable
2. Remove one brass set nut from the blade pitch cable end
as shown in (Figure 10).
3. Thread the second brass set nut towards the cable as far
as possible.
4. Insert the cable end through the yoke eyelet (Figure 11)
Tighten the first brass set nut by hand to remove all the
slack from the cable.
Pitch Cable Installation
THREAD CABLE END
THROUGH YOKE EYELET
TIGHTEN SECOND
BRASS SET NUT
AGAINST YOKE BOSS
Figure 9. "No Pitch" Position
1. Expose the pitch cable to maximum by adjusting the handle
pitch to the "no pitch" position. On the standard model turn
the pitch control counter-clockwise, (Figure 9).
5. Using a wrench, tighten the second brass set nut up against
the yoke boss. This will lock the cable in place.
6. Use a wrench and finish tightening the first brass set nut up
against the yoke boss.
YOKE
USE A WRENCH TO
TIGHTEN FIRST BRASS
SET NUT AGAINST YOKE BOSS
Figure 11. Cable Yoke Attachment
SCT SERIES WALK-BEHIND TROWEL — PARTS & OPERATION MANUAL — REV. #4 (04/02/07) — PAGE 19
CAUTIONCAUTION
CAUTION
CAUTIONCAUTION
NEVER operate the trowel
in a confined area or
enclosed area structure
that does not provide
free flow of air
ample
ALWAYS wear approved eye and hearing
protection before operating the trowel.
.
SCT SERIES TROWEL— PRE-INSPECTION
Figure 12. Engine Oil Dipstick (Removal)
NEVER place hands or feet inside the guard
rings while the engine is running. ALWAYS
shut the engine down before performing any
kind of maintenance service on the trowel.
It is recommended that the trowel's
to stop the engine after every use. Doing this will verify that the
switch is working properly and presents no danger to the operator.
Before Starting
1. Read safety instructions at the beginning of manual.
trowel
2. Clean the
filter and carburetor.
3. Check the air filter for dirt and dust. If air filter is dirty, replace
air filter with a new one as required.
4. Check carburetor for external dirt and dust. Clean with dry
compressed air.
, removing dirt and dust, particularly the air
safety stop switch
is used
3. Insert and remove the dipstick without screwing it into the filler
neck. Check the oil level shown on the dipstick.
4. If the oil level is low (Figure 13), fill to the edge of the oil filler
hole with the recommended oil type (Table 4). Maximum oil
capacity is 400 cc.
NOTE
Reference manufacturer engine
manual for specific servicing
instructions.
5. Check fastening nuts and bolts for tightness.
Engine Oil Check
Figure 13. Engine Oil Dipstick (Oil Level)
epyTliO.4elbaT
1. To check the engine oil level, place the trowel on secure level
ground with the engine stopped.
2. Remove the filler dipstick from the engine oil filler hole
(Figure 12) and wipe it clean.
PAGE 20 — SCT SERIES WALK-BEHIND TROWEL— PARTS & OPERATION MANUAL — REV. #4 (04/02/07)
nosaeS erutarepmeT epyTliO
remmuS rehgiHroC°52 03-W01EAS
llaF/gnirpS C°01~C°52 02/03-W01EAS
retniW rewoLroC°0 01-W01EAS
Explosive Fuel
CAUTIONCAUTION
CAUTION
CAUTIONCAUTION
Fuel Check
SCT SERIES TROWEL— PRE-INSPECTION
V-belt Check
A worn or damaged V-belt can adversely affect the performance
of the trowel. If a V-belt is defective or worn simply replace the Vbelt as outlined in the maintenance section of this manual.
Blade Check
Motor fuels are highly flammable and can be
dangerous if mishandled. DO NOT smoke
while refueling. DO NOT attempt to refuel the
trowel if the engine is
hot! or running
.
Check for worn or damaged blades. Check to see if one blade is
worn out while the others look new. If this is the case there could
be a blade pitch problem. Refer to the maintenance section of
this manual for blade pitch adjustment procedure. Always replace
any worn or damaged blades.
1. Remove the gasoline cap located on top of fuel tank.
2. Visually inspect to see if fuel level is low. If fuel is low, replenish
with unleaded fuel.
3. When refueling, be sure to use a strainer for filtration. DO
NOT top-off fuel. Wipe up any spilled fuel.
NEVER!
NOTE
Gearbox Oil
1. Determine if the
glass/fill plug located on the side of the gearbox. This plug
will be marked by the "
correct level of the lubrication oil should be to the bottom of
the sight glass/fill plug.
safety stopswitch. It is provided for
operator safety. Injury may result if it
is disable, disconnected or
improperly maintained.
gearbox
check
disable or disconnect the
oil is low by viewing the oil sight
" decal. See (Figure 14). The
CONTROLS
Safety Stop Switch
This trowel has been equipped with a safety safety stop switch.
Safety stop switches should be tested every time the engine is
started.
Centrifugal Type Safety Stop Switch
(Figure 15) The switching mechanism of this switch should
operate freely and should
the switch in the "OFF" position, the engine should not start or
run. The purpose of this switch is to stop the engine in a runaway
situation, (i.e. the operator releasing the handle during operation).
NOTE
NEVER!
safety stopswitch. It is provided for
operator safety. Injury may result if it
is disable, disconnected or
improperly maintained.
always
disable or disconnect the
be kept in this condition. With
GEARBOX
OIL SIGHT/
FILL PLUG
DRAIN
PLUG
Figure 14. Gearbox
2. If lubrication oil cannot be seen in the sight glass, fill with
type ISO 680 (P/N 10139) gearbox lubricant oil until the oil
will show at the center of the oil sight glass when the
gearbox is level..
SCT SERIES WALK-BEHIND TROWEL — PARTS & OPERATION MANUAL — REV. #4 (04/02/07) — PAGE 21
Figure 15. Centrifugal Safety Stop Switch
SCT SERIE STROWEL — INITIAL START-UP
This section is intended to assist the operator with the initial
start-up of the walk-behind trowel. It is extremely important that
this section be read carefully before attempting to use the trowel
in the field.
DO NOT use your trowel until this section is thoroughly
understood.
CAUTIONCAUTION
CAUTION
CAUTIONCAUTION
LIFTING THE TROWEL
CAUTIONCAUTION
CAUTION
CAUTIONCAUTION
DO NOT attempt to operate the trowel until
the Safety, General Information and
Inspection sections of this manual have
been read and thoroughly understood.
Depending on engine manufacturer,
operating steps may vary. See engine
manufactures operating manual. The
following start-up procedure makes
reference to a HONDA Gasoline Engine
(Manual Start).
CAUTIONCAUTION
CAUTION
CAUTIONCAUTION
Lifting Bail
A lifting bail is provided at an optimal lifting point for moving the
A hoist or forklift
trowel.
concrete slab. A
Extra care MUST be taken when lifting the machine off the ground.
Serious damage to the machine or personal injury could be
caused by dropping a trowel.
Starting the Engine
1. Place the engine
position.
The trowel must be stabilized by the person
carrying the
If it is not stabilized properly the handle may
swing around and
damage to the trowel and bodily injury.
crane
can be used to lift the trowel onto a building.
fuel valve lever
operator’s handle
flip
the trowel, thus causing
can be used to lift the trowel up onto a
(Figure 17) to the "ON"
(Figure 16).
When lifting of the trowel is required always
two people
use
If another person is not available attach a
crane or lifting device to the trowel's lifting
bale.
With one person lifting from the main handle (Figure 16), and
another person lifting from the front of the frame, lift the trowel onto
a slab.
to lift the trowel onto a slab
.
2. Make sure the
Figure 17. Engine Fuel Valve Lever
throttle
(Figure 18) is in the "idle" position.
Figure 16. Lifting the Trowel
PAGE 22 — SCT SERIES WALK-BEHIND TROWEL— PARTS & OPERATION MANUAL — REV. #4 (04/02/07)
Figure 17. Throttle (Idle Position)
SCT SERIES TROWEL — INITIAL START-UP
3. Place the
"ON" position.
CAUTIONCAUTION
CAUTION
CAUTIONCAUTION
centrifugal safety stop switch
Figure 19. Centrifugal Safety Stop Switch
(Figure 19) in the
NEVER disable or disconnect the centrifugal
safety stop switch. It is provided for the
operators’ safety and injury may result if it is
disabled, disconnected or improperly
maintained.
6. If the engine has started, slowly return the choke lever
7.
8. To begin troweling, move the throttle lever (Figure 22) toward
Figure 21. Starter Grip
(Figure 20) to the
started repeat steps 1 through 5.
Before the trowel is placed into operation, run the engine for
several minutes. Check for fuel leaks, and noises that would
associate with a loose guard ring and/or covers.
RUN
the "
" position by pulling back toward the operator..
"OPEN"
position. If the engine has not
4. Place the
position.
5. Grasp the starter grip (Figure 21) and slowly pull it out. The
resistance becomes the hardest at a position corresponding
to the compression point. Pull the starter grip briskly and
smoothly for starting.
Choke Lever
Figure 20. Engine Choke Lever
(Figure 20) in the "
CLOSED
"
Figure 22. Throttle (Run Position)
SCT SERIES WALK-BEHIND TROWEL — PARTS & OPERATION MANUAL — REV. #4 (04/02/07) — PAGE 23
SCT SERIES TROWEL — OPERATION
The following steps are intended as a basic guide to machine
operation, and are not to be considered a complete guide to
concrete finishing. We suggest that all operators, (experienced
and novice), read “
Concrete Institute, Detroit, Michigan
section of this manual for more information.
PITCHING THE BLADES
1. To pitch the blades upwards using the "
(Figure 23) simply turn the
star wheel counter clockwise will cause the blades to lay flat.
Figure 24 below illustrates a typical walk-behind trowel
application. Practice maneuvering the trowel. The trick is to let
the trowel do the work.
Slabs on Grade
Figure 23. Pitching the Blades
” published by the
. Read the “Training”
Standard
star-wheel
clockwise. Turning the
American
" handle,
Maneuvering the Trowel
With a secure foothold and a firm grasp on the handles slowly
1.
increase the engine speed until the desired blade speed is
obtained.
2. To maneuver the trowel, gently lift up on or press down on the
main trowel handle. To move the machine to the operator’s
left,
down
3. The best method for finishing concrete is to slowly walk
backwards (Figure 24) with the trowel, guiding the trowel
from side to side. This will cover all footprints on wet concrete.
4. Remember that if you let go of the trowel, just step away and
let the trowel come to a complete stop before trying to recover
the trowel.
Continue to practice maneuvering the trowel. Try to practice
5.
as if you were finishing a slab of concrete. Practice edging
and covering a large area.
WARNINGWARNING
WARNING
WARNINGWARNING
lift up
on the handle, to move machine to the right,
on the handle.
NEVER place your
rings while starting or operating this equipment.
ALWAYS keep clear of
while operating this equipment.
feet
or
hands
rotating
inside the guard
or
moving
push
parts
Figure 24. Maneuvering The Trowel
PAGE 24 — SCT SERIES WALK-BEHIND TROWEL— PARTS & OPERATION MANUAL — REV. #4 (04/02/07)
SCT SERIES TROWEL — OPTIONS
Blades
Blades should be changed when
NOTE
they fail to finish concrete in a
satisfactory manner.
Blades are a vital part of finishing concrete. This trowel, or
finisher
built to stringent quality standards out of the finest trowel steel. If
you need replacement blades, consult your parts list in this
manual for part numbers and order them from your Multiquip parts
dealer or importer.
Combo Blades
This trowel was equipped with combination
25) blades as original equipment. These blades have been
designed for optimum performance in both the floating and
finishing operations. These blades are versatile and should take
care of most troweling needs.
, has been designed to finish concrete and the blades are
float/finish
(Figure
Clip-On Float Blades (Optional)
These blades will clip on to an existing installed blade, (Figure
27), allowing the finisher to "float" on “wet” concrete so that the
troweling operation can begin as early as possible. They can be
easily removed, so when the concrete is sufficiently cured, the
troweling operation can continue.
Float Discs (Optional)
These round discs (Figure 28) attach to the spiders and allow the
machine to “float” on “wet” concrete. The disc design allows early
floating and easy movement from wet to dry areas. They are also
very effective in embedding large aggregates and surface
hardeners.
Figure 27. Clip-On Float Blade
Figure 25. Combination Blade
Finish Blades (Optional)
These blades (Figure 26) have been specifically designed for
finish operations with this trowel. They will provide a premium
surface finishing capability from your trowel. They should only be
used after the concrete has set to the point where the trowel does
not sink into the concrete when placed on it.
Trowel Arm Adjustment Tool
If blades show uneven wear patterns or some tend to wear out
faster than others, the trowel arms may need to be adjusted. A
special tool P/N 1817, (Figure 29) is available that can be used
to adjust all of the trowel arms consistently.
See page 33 for Trowel Arm Adjustment procedures using this
tool.
Figure 28. Float Disk
Figure 26. Finish Blade
Figure 29. Trowel Arm Adjustment Fixture
SCT SERIES WALK-BEHIND TROWEL — PARTS & OPERATION MANUAL — REV. #4 (04/02/07) — PAGE 25
SCT SERIES TROWEL — MAINTENANCE (ENGINE)
Engine Maintenance
Perform engine maintenance procedures as referenced by
Table 5 below:
)3(NOITPIRCSEDNOITAREPOEROFEB
KCEHCX
liOenignE
EGNAHCX
KCEHCX
renaelCriA
EGNAHC)1(X
stloB&stuNllA
gulPkrapS
fInethgit-eR
yrasseceN
NAELC-KCEHCX
ECALPER X
X
QP40TH — MAINTENANCE (ENGINE)
eludehcSecnanetniaMenignE.5elbaT
TSRIF
HTNOM
RO
.SRH01
YREVE
SHTNOM3
RO
.SRH52
YREVE
SHTNOM6
RO
.SRH05
YREVE
RAEY
RO
01
.SRH0
YREVE
SRAEY2
RO
.SRH002
NOTE
sniFgnilooCKCEHCX
retserrAkrapSNAELC X
knaTleuFNAELC X
retliFleuFKCEHC X
deepSeldITSUJ
ecnaraelCevlaVTSUJDA-KCEHC )2(X
senilleuFKCEHC )2()yrassecenfiecalper(sraey2yrevE
neuqerferomecivreS)1( YTSUD .saera
DA-KCEHC )2(X
nidesunehwylt
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reporpenimretedotnoitarepofosruohgol,esulaicremmocroF)3(
.slavretniecnanetniam
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Reference manufacturer engine
manual for specific servicing
instructions.
PAGE 26 — SCT SERIES WALK-BEHIND TROWEL— PARTS & OPERATION MANUAL — REV. #4 (04/02/07)
SCT SERIES TROWEL — MAINTENANCE (ENGINE)
Maintenance
Perform the engine maintenance procedures as indicated below:
DAILY
■
Thoroughly remove dirt and oil from the engine and control
area. Clean or replace the air cleaner elements as necessary.
Check and retighten all fasteners as necessary. Check the
spring box and bellows for oil leaks. Repair or replace as
needed.
WEEKLY
■
Remove the fuel filter cap and clean the inside of the fuel
tank.
■
Remove or clean the filter at the bottom of the tank.
■
Remove and clean the spark plug (Figure 30), then adjust
the spark gap to 0.028 ~0.031 inch (0.6~0.7 mm). This unit
has electronic ignition, which requires no adjustments.
DANGER :
ENGINE AIR CLEANER
1. Remove the air cleaner cover and foam filter element as
2. Tap the paper filter element (Figure 32) several times on a
3. Clean foam element in warm, soapy water or nonflammable
DO NOT use gasoline as a cleaning solvent,
because that would create a risk of fire or
explosion.
shown in Figure 32.
hard surface to remove dirt, or blow compressed air [not
exceeding 30 psi (207 kPa, 2.1 kgf/cm
element from the air cleaner case side.
Brushing will force dirt into the fibers. Replace the paper filter
element if it is excessively dirty.
solvent. Rinse and dry thoroughly. Dip the element in clean
engine oil and completely squeeze out the excess oil from the
element before installing.
2
)] through the filter
NEVER
brush off dirt.
Figure 30. Spark Plug Gap
ENGINE OIL
warm
1. Drain the engine oil when the oil is
Figure 31.
2. Remove the oil drain bolt and sealing washer and allow
the oil to drain into a suitable container.
3. Replace engine oil with recommended type oil as listed
in Table 4. DO NOT overfill. See Table 2 for oil capacity.
4. Install drain bolt with sealing washer and tighten securely.
as shown in
Figure 32. Engine Air Cleaner
Figure 31. Engine Oil (Draining)
SCT SERIES WALK-BEHIND TROWEL — PARTS & OPERATION MANUAL — REV. #4 (04/02/07) — PAGE 27
See the engine manual supplied with
NOTE
your machine for appropriate engine
maintenance schedule and
troubleshooting guide for problems.
At the front of the book (Page 7) there is a “
Checklist
basis.
CAUTION!CAUTION!
CAUTION!
CAUTION!CAUTION!
”. Make copies of this checklist and use it on a daily
Daily Pre-Operation
SCT SERIES TROWEL — MAINTENANCE
Trowel Arm Adjustment Procedure
The following procedure should be
NOTE
A
level
, clean area to test the trowel prior to and after is essential.
spots
Any unlevel
will give an incorrect perception of adjustment. Ideally, a 5 x 5"
three-quarter inch thick
in the floor or debris under the trowel blades
followed to adjust trowel arms when
it becomes apparent that the trowel
is finishing poorly or in need of
routine maintenance.
flat
steel plate should be used for testing.
ALWAYS allow the engine to cool before
servicing. NEVER attempt any maintenance
hot!
work on a
MAINTENANCE SCHEDULE
Daily (8-10 Hours)
1. Check the oil level in the engine crankcase and gear box,
fill as necessary.
2. Check V-belt.
Weekly (50-60 Hours)
1. Relube arms, thrust collar and clutch.
2. Replace blades if necessary.
3. Check and clean or replace the engine air filter as
necessary.
4. Replace engine oil and filter as necessary, see engine
manual.
Monthly (200-300 Hours)
1. Remove, clean, reinstall and relube the arms and thrust
collar.
2. Adjust the blade arms.
Yearly (2000-2500 Hours)
engine.
1. To determine which blades need adjustment, place the
trowel in the test area (three-quarter inch thick plate) and look
for the following conditions:
■
■
Figure 33 below illustrates a "
trowel arms
touching (0.10" max. clearance) lower wear plate. All alignment
bolts should be spaced the same distance from the lower wear
plate.
Figure 34 below illustrates the "
plate (as shipped from the factory).
Pitch the blades as flat as possible and look at the
adjustment bolts
with the
that one of them is not making contact, some adjustment
will be necessary.
Is the machine wearing out blades unevenly (i.e. one
blade is completely worn out while the others look new)?
lower wear plate
". Check to see that adjustment bolt is barely
Figure 33. Worn Spider Plate
. They should all barely make contact
on the spider. If you can see
worn spider bushings or bent
correct alignment
" for a spider
1. Check and replace if necessary the arm bushings, thrust
collar bushings and shaft seals.
2. Check pitch control cables for wear.
3. Adjust blade speed.
Figure 34. Correct Spider Plate Alignment
PAGE 28 — SCT SERIES WALK-BEHIND TROWEL— PARTS & OPERATION MANUAL — REV. #4 (04/02/07)
SCT SERIES TROWEL — MAINTENANCE
2. Start engine, and bring trowel blades up to full speed and look
for the following conditions:
■
Does the trowel have a perceived rolling or bouncing
motion when in use?
■
Look at the trowel while it is running, does the guard
ring “rock up and down” relative to the ground?
Spider Removal
1. Once it is determined that an adjustment is required, remove
the spider assembly from the gearbox shaft as follows:
a. Locate the cone point square head set screw (Figure 35)
and attached jam nut found on the side of the spider
assembly.
b. Loosen the jam nut and cone point square head set
c. If the trowel is equipped with an outer stabilizer ring
screw, and carefully lift the u
of the spider assembly. A slight tap with a rubber mallet
may be necessary to dislodge the spider from the main
shaft of the gearbox.
(Figure 36), remove the four bolts at the end of each
spider arm.
pper trowel assembly
off
Figure 36. Stabilizer Ring
d. Examine stabilizer ring for out of round or bends. If ring
is damaged, replace ring. If ring is found to be correct with
no damage, set aside.
Trowel Arm Removal
1. Each trowel arm is held in place at the spider plate by a hex
head bolt (zerk grease fitting) and a roll pin. Remove both the
hex head bolt and the roll pin (Figure 37) from the spider
plate.
2. Remove the trowel arm from the spider plate.
Figure 35. Spider/Gearbox Removal
Figure 37. Removing Roll Pin
and Zerk Grease Fitting
SCT SERIES WALK-BEHIND TROWEL — PARTS & OPERATION MANUAL — REV. #4 (04/02/07) — PAGE 29
SCT SERIES TROWEL — MAINTENANCE
3. Should the trowel arm inserts (bronze bushing ) come out
with the trowel arm, remove the bushing from the trowel arm
and set aside in a safe place. If the bushing is retained inside
the spider plate, carefully remove the bushing.
4. Examine the bronze trowel arm bushing insert (Figure 38),
and clean if necessary. Replace the bushing if out-of-round
or worn.
Figure 38. Bronze Bushings
Trowel Blade Removal
1. Remove the trowel blades from the trowel arm by removing
the hex head bolts (Figure 39) from the trowel arm. The 36"
model will have two hex head bolts per arm and the 46" model
will have three hex head bolts per arm. Set blades aside.
Trowel Arm Flatness Test
1. Using a piece of 3/4 inch thick steel plate or any surface which
true
is
flatness.
2. Check each of the six sides of the trowel arm (hex section
only) using a ten thousands of an inch (max.) feeler gauge
(Figure 40) between the flat of the trowel arm and an
tremely flat
and
flat
test surface.
, check all
six sides
of each trowel arm for
ex
-
Figure 39. Trowel Blades
Wire brush
2.
trowel arm. Repeat this for the remaining three arms.
any build-up of concrete from all six sides of the
Figure 40. Trowel Arm Flatness Test
3. If the trowel arm is found to be
trowel arm. A bent trowel will not allow the trowel to operate
in a smooth fluid rotation.
4. Next, check each of the six sides of the round machined shaft
section of the trowel arm. Each section should have the
clearance
test surface.
between the round of the trowel arm shaft and the
uneven
or
bent
, replace the
same
Trowel arms can be damaged by
rough handling or by striking
NOTE
exposed plumbing or forms while in
operation.
ALWAYS
look-out for
objects which might cause damage
to the trowel arms.
PAGE 30 — SCT SERIES WALK-BEHIND TROWEL— PARTS & OPERATION MANUAL — REV. #4 (04/02/07)
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