OPERATION MANUAL
SERIES
MODELS
J36 AND B46 SERIES
CENTRIFUGAL CLUTCH
(INCLUDES M30H55)
(HONDA/ROBIN-SUBARU GASOLINE ENGINES)
Revision #1 (11/17/17)
To find the latest revision of this
publication, visit our website at:
www.multiquip.com
THIS MANUAL MUST ACCOMPANY THE EQUIPMENT AT ALL TIMES.
PN: 13401
PROPOSITION 65 WARNING
Engine exhaust and some of
its constituents, and some dust created
by power sanding, sawing, grinding,
drilling and other construction activities
contains chemicals known to the State
of California to cause cancer, birth
defects and other reproductive harm.
Some examples of these chemicals are:
Lead from lead-based paints.
Crystalline silica from bricks.
Cement and other masonry products.
Arsenic and chromium from chemically
treated lumber.
Di-lsononyl Phthalate (DINP)
Your risk from these exposures varies,
depending on how often you do this type
of work. To reduce your exposure to
these chemicals: ALWAYS work in a
well ventilated area, and work with
approved safety equipment, such as
dust masks that are specially designed
to filter out microscopic particles.
PAGE 2 — J36/B46-M30 SERIES WALK-BEHIND TROWELS • OPERATION MANUAL — REV. #1 (11/17/17)
SILICOSIS/RESPIRATORY WARNINGS
WARNING
SILICOSIS WARNING RESPIRATORY HAZARDS
Grinding/cutting/drilling of masonry,concrete,metaland
other materials with silica in their composition may give
off dust or mists containing crystalline silica. Silica is a
basic component of sand, quartz, brick clay, granite and
numerous other minerals and rocks. Repeated and/or
substantial inhalation of airborne crystalline silica can
cause serious or fatal respiratory diseases, including
silicosis.In addition, California and some other
authorities have listed respirable crystalline silica as a
substance known to cause cancer. When cutting such
materials, always follow the respiratory precautions
mentioned above.
WARNING
Grinding/cutting/drilling of masonry,concrete,metaland
other materials can generate dust, mists and fumes
containing chemicals known to cause serious or fatal
injury or illness, such as respiratory disease, cancer,
birth defects or other reproductive harm. If you are
unfamiliar with the risks associated with the particular
process and/or material being cut or the composition of
the tool being used, review the material safety data
sheet and/or consult your employer, the material
manufacturer/supplier, governmental agencies such as
OSHA and NIOSH and other sources on hazardous
materials. California and some other authorities, for
instance, have published lists of substances known to
cause cancer, reproductive toxicity,or other harmful
effects.
Control dust, mist and fumes at the source where
possible. In this regard use good work practices and
follow the recommendations of the manufacturers or
suppliers, OSHA/NIOSH, and occupational and trade
associations.Water should be used for dust
suppression when wet cutting is feasible. When the
hazards from inhalation of dust, mists and fumes cannot
be eliminated, the operator and any bystanders should
always wear a respirator approved by NIOSH/MSHA for
the materials being used.
J36/B46-M30 SERIES WALK-BEHIND TROWELS • OPERATION MANUAL — REV. #1 (11/17/17) — PAGE 3
J36 and B46 Series/M30
Walk-Behind Power Trowels
Proposition 65 Warning ........................................... 2
Silicosis/Respiratory Warnings ................................ 3
Table Of Contents .................................................... 4
Training Checklist .................................................... 5
Daily Pre-Operation Checklist ................................. 6
Safety Information ............................................. 8–12
Specifications (Trowel) ..................................... 13–15
Dimensions ............................................................ 16
General Information ............................................... 17
Components (Trowel) ...................................... 18–20
Set-Up ............................................................. 21–25
Inspection ........................................................ 26–28
Operation ......................................................... 29–33
Options ............................................................ 34–35
Maintenance .................................................... 36–44
Troubleshooting (Engine) ................................. 45–48
Wiring Diagram ...................................................... 49
TABLE OF CONTENTS
PAGE 4 — J36/B46-M30 SERIES WALK-BEHIND TROWELS • OPERATION MANUAL — REV. #1 (11/17/17)
TRAINING CHECKLIST
Training Checklist
No. Description OK? Date
1
2
3 Fuel system, refueling procedure.
4
5
6 Emergency stop procedures.
7 Startup of machine, engine choke.
8 Maintaining a hover.
9 Maneuvering.
10 Pitching.
11 Concrete fi nishing techniques.
12 Shutdown of machine.
Read operation manual
completely.
Machine layout, location of
components, checking of engine
oil level.
Operation of controls (machine
not running).
Safety controls, safety stop switch
operation.
13 Lifting of machine (lifting bail).
14 Machine transport and storage.
J36/B46-M30 SERIES WALK-BEHIND TROWELS • OPERATION MANUAL — REV. #1 (11/17/17) — PAGE 5
DAILY PRE-OPERATION CHECKLIST
Daily Pre-Operation Checklist
1 Engine oil level
2 Gearbox oil level
3 Condition of blades
4 Blade pitch operation
5 Safety stop switch operation
PAGE 6 — J36/B46-M30 SERIES WALK-BEHIND TROWELS • OPERATION MANUAL — REV. #1 (11/17/17)
NOTES
J36/B46-M30 SERIES WALK-BEHIND TROWELS • OPERATION MANUAL — REV. #1 (11/17/17) — PAGE 7
SAFETY INFORMATION
Do not operate or service the equipment before reading
the entire manual. 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.
SAFETY MESSAGES
The four safety messages shown below will inform you
about potential hazards that could injure you or others. The
safety messages specifi cally address the level of exposure
to the operator and are preceded by one of four words:
DANGER, WARNING, CAUTION
SAFETY SYMBOLS
Potential hazard associated with the operation of this
which
may appear throughout this manual in conjunction with
associated with the operation of this
P/N 23700
allow any person
to stand underneath the trowel while lifting.
NEVER
P/N360
99
ALWAYS wear protective clothing when
operating this equipment
This machine to be operated by qualified
personnel. Ask for training as needed.
Lifting Crush Hazard
lift trowel with pans attached.DO NOT
WARNING
WARNING
Read Manual
NEVER operate this equipment with guards
removed. Keep hands clear.
WARNING
Training
Guard Hazard
WARNING
make sure handle is securely attached.
On Quick Pitch™ models make sure T-Handle
latch is locked (engaged).
ALWAYS
DECAL
SAFETY HAZARD
equipment will be referenced with hazard symbols
safety messages.
or NOTICE.
DANGER
Indicates a hazardous situation which, if not avoided,
WILL result in DEATH or SERIOUS INJURY.
WARNING
Indicates a hazardous situation which, if not avoided,
COULD result in DEATH or SERIOUS INJURY.
CAUTION
Indicates a hazardous situation which, if not avoided,
COULD result in MINOR or MODERATE INJURY.
NOTICE
Addresses practices not related to personal injury.
SYMBOL
Inhaling exhaust fumes can result in severe
injury or death.
Only operate equipment in well ventilated areas.
Gasoline fuel can cause fire or explosion. Stop
engine before refueling.
Keep cigarettes, sparks and flames away from hot
surfaces.
HOT PARTS can burn skin.
DO NOT
amount of time to cool before performing maintenance.
SAFETY HAZARD
WARNING
Lethal Exhaust Gas Hazard
inhale exhaust gases/fumes.DO NOT
WARNING
Explosive Fuel Hazard
CAUTION
Burn Hazard
touch hot parts. Allow machine a sufficient
Warning decals
equipment are defi ned below:
Keep hands and feet clear of guard rings.
Stop engine before servicing.
To avoid injury you must read and
understand operator’s manual before
using this machine.
WARNING
Rotating Blade Hazard
PAGE 8 — J36/B46-M30 SERIES WALK-BEHIND TROWELS • OPERATION MANUAL — REV. #1 (11/17/17)
GENERAL SAFETY
NOTICE
This equipment should only be operated by trained and
Whenever necessary, replace nameplate, operation and
Manufacturer does not assume responsibility for any
accident due to equipment modifi cations. Unauthorized
use accessories or attachments that are not
recommended by Multiquip for this equipment. Damage
keep
Also, know the phone numbers
fi re department.
This information will be invaluable in the case of an
SAFETY INFORMATION
CAUTION
NEVER operate this equipment without proper protective
clothing, shatterproof glasses, respiratory protection,
hearing protection, steel-toed boots and other protective
devices required by the job or city and state regulations.
Avoid wearing jewelry or loose fi tting clothes that may
snag on the controls or moving parts as this can cause
serious injury.
NEVER operate this equipment when not
feeling well due to fatigue, illness or when
under medication.
NEVER operate this equipment under the
infl uence of drugs or alcohol.
ALWAYS clear the work area of any debris, tools, etc.
that would constitute a hazard while the equipment is
in operation.
No one other than the operator is to be in the working
area when the equipment is in operation.
DO NOT use the equipment for any purpose other than
its intended purposes or applications.
qualifi ed personnel 18 years of age and older.
safety decals when they become diffi cult read.
equipment modifi cation will void all warranties.
NEVER
to the equipment and/or injury to user may result.
ALWAYS know the location of the nearest
fi re extinguisher.
ALWAYS know the location of the nearest
fi rst aid kit.
ALWAYS know the location of the nearest phone or
a phone on the job site.
of the nearest ambulance, doctor and
emergency.
J36/B46-M30 SERIES WALK-BEHIND TROWELS • OPERATION MANUAL — REV. #1 (11/17/17) — PAGE 9
SAFETY INFORMATION
TROWEL SAFETY
ALWAYS keep work area
Fix damage to machine and replace any broken parts
store equipment properly when it is not being
used. Equipment should be stored in a clean, dry location
out of the reach of children and unauthorized personnel.
A safety manual for operating and maintenance
personnel of concrete power trowels produced by the
Association of Equipment Manufacturers (AEM) can be
obtained for a fee by ordering through their website at
place hands or fingers inside engine
operate the engine with heat shields or
while the engine is hot. Allow the oil to cool before
performing maintenance. This will prevent scalding of
DANGER
Engine fuel exhaust gases contain poisonous carbon
monoxide. This gas is colorless and odorless, and can
cause death if inhaled.
The engine of this equipment requires an adequate free
fl ow of cooling air. NEVER operate this equipment in any
enclosed or narrow area
where free fl ow of the air is
restricted. If the air fl ow is
restricted it will cause injury
to people and property and
serious damage to the
equipment or engine.
NEVER operate the equipment in an explosive
atmosphere or near combustible materials. An
explosion or fi re could result causing severe
bodily harm or even death.
WARNING
ALWAYS keep clear of rotating or moving
parts while operating the trowel.
DO NOT start or operate the trowel if the
drive train will not disengage. Centrifugal
force between the trowel and surface when starting can
cause uncontrolled handle movement that can cause
serious injury. The handle must not move while pulling
the engine recoil starter.
NEVER disconnect any emergency or safety devices.
These devices are intended for operator safety.
Disconnection of these devices can cause severe injury,
bodily harm or even death. Disconnection of any of these
devices will void all warranties.
CAUTION
DANGEROUS
GAS FUMES
clear around the trowel.
Make sure it is free of
C
L
P
E
E
A
E
K
R
debris and objects.
NOTICE
ALWAYS keep the machine in proper running condition.
immediately.
ALWAYS
www.aem.org.
Order FORM PT-160
ENGINE SAFETY
WARNING
DO NOT
compartment when engine is running.
NEVER
guards removed.
Keep fi ngers, hands hair and clothing away
from all moving parts to prevent injury.
DO NOT remove the engine oil drain plug
NEVER stand on trowel during operation.
NEVER lubricate components or attempt service on a
running machine.
NEVER place your feet or hands inside the guard rings
while starting or operating this equipment.
PAGE 10 — J36/B46-M30 SERIES WALK-BEHIND TROWELS • OPERATION MANUAL — REV. #1 (11/17/17)
personnel.
CAUTION
NEVER touch the hot exhaust manifold,
muffl er or cylinder. Allow these parts to cool
before servicing equipment.
NOTICE
FUEL SAFETY
Store fuel in appropriate containers, in well-ventilated
Some walk-behind trowels can be lifted or moved by two
people utilizing lifting tubes or other special attachments.
Generally, however, they must be lifted using lifting bales
transport trowel with fl oat pans attached unless
safety catches are used and are specifi cally cleared for
hoist the trowel more than three feet off the
Before lifting, make sure that the lifting bales are not
Always make sure crane or lifting device has been
Tighten fuel tank cap securely and close fuel cock to
Use adequate lifting cable (wire or rope) of suffi cient
tie down equipment during transport by
NEVER run engine without an air fi lter or with a dirty air
fi lter. Severe engine damage may occur. Service air fi lter
frequently to prevent engine malfunction.
NEVER tamper with the factory settings
of the engine or engine governor. Damage
to the engine or equipment can result
if operating in speed ranges above the
maximum allowable.
SAFETY INFORMATION
areas and away from sparks and fl ames.
NEVER use fuel as a cleaning agent.
DO NOT smoke around or near the
equipment. Fire or explosion could result
from fuel vapors or if fuel is spilled on a
hot engine.
TRANSPORTING SAFETY
CAUTION
DO NOT add fuel to equipment if it is placed inside
truck bed with plastic liner. Possibility exists of explosion
or fi re due to static electricity.
DO NOT start the engine near spilled fuel or combustible
fl uids. Fuel is extremely fl ammable and its vapors can
cause an explosion if ignited.
ALWAYS refuel in a well-ventilated area, away from
sparks and open fl ames.
ALWAYS use extreme caution when working with
fl ammable liquids.
DO NOT fi ll the fuel tank while the engine is running
or hot.
DO NOT overfi ll tank, since spilled fuel could ignite if it
comes into contact with hot engine parts or sparks from
the ignition system.
DANGER
FUEL
FUEL
NEVER allow any person or animal to
stand underneath the equipment while
lifting.
NOTICE
and cranes, hoists, or forklifts.
NEVER
such transport by the manufacturer.
NEVER
ground with fl oat pans attached.
damaged.
properly secured to the lifting bales of the equipment.
ALWAYS shutdown engine before transporting.
NEVER lift the equipment while the engine is running.
prevent fuel from spilling.
strength.
DO NOT lift machine to unnecessary heights.
ALWAYS
securing the equipment with rope.
J36/B46-M30 SERIES WALK-BEHIND TROWELS • OPERATION MANUAL — REV. #1 (11/17/17) — PAGE 11
SAFETY INFORMATION
ENVIRONMENTAL SAFETY/DECOMMISSIONING
Decommissioning is a controlled process used to safely
retire a piece of equipment that is no longer serviceable.
If the equipment poses an unacceptable and unrepairable
safety risk due to wear or damage or is no longer cost
effective to maintain (beyond life-cycle reliability) and is to
be decommissioned (demolition and dismantlement),be
sure to follow rules below.
EMISSIONS INFORMATION
The gasoline engine used in this equipment has been
designed to reduce harmful levels of carbon monoxide
(CO), hydrocarbons (HC) and nitrogen oxides (NOx)
This engine has been certifi ed to meet US EPA Evaporative
Attempting to modify or make adjustments to the engine
emmission system by unauthorized personnel without
proper training could damage the equipment or create an
Additionally, modifying the fuel system may adversely affect
evaporative emissions, resulting in fi nes or other penalties.
The emission control label is an integral part of the emission
If a replacement emission label is needed, please contact
NOTICE
DO NOT pour waste or oil directly onto the ground, down
a drain or into any water source.
Contact your country's Department of
Public Works or recycling agency in your
area and arrange for proper disposal of
any electrical components, waste or oil
associated with this equipment.
When the life cycle of this equipment is over, remove
battery and bring to appropriate facility for lead
reclamation. Use safety precautions when handling
batteries that contain sulfuric acid.
When the life cycle of this equipment is over, it is
recommended that the trowel frame and all other metal
parts be sent to a recycling center.
Metal recycling involves the collection of metal from
discarded products and its transformation into raw
materials to use in manufacturing a new product.
Recyclers and manufacturers alike promote the process
of recycling metal. Using a metal recycling center
promotes energy cost savings.
NOTICE
contained in gasoline exhaust emissions.
emissions requirements in the installed confi guration.
unsafe condition.
Emission Control Label
system and is strictly controlled by regulation(s).
The label must remain with the engine for its entire life.
your authorized engine distributor.
PAGE 12 — J36/B46-M30 SERIES WALK-BEHIND TROWELS • OPERATION MANUAL — REV. #1 (11/17/17)
SPECIFICATIONS (TROWEL)
Table 1. J-Series Trowel Specifications
Model J36H55/J36R60/J36S60 J36H90/J36R90 J36H90H/J36R90H M30H55
Number of Blades 4
Ring Diameter 36 in. (914 mm) 30 in. (762 mm)
Rotor RPM 60–115 60–130 90–155 60–130
Path Width 34.5 in. (876 mm) 28.67 in. (728 mm)
Shipping Weight 182 lb. (82.6 kg) 182 lb. (82.6 kg) 207 lb. (93.9 kg) 195 lb. (88.5 kg)
Table 2. B-Series Trowel Specifications
Model B46H90/B46R90/B46H11 B46H11H B46S90
Number of Blades 4
Ring Diameter 46.5 in. (1,181 mm)
Rotor - RPM 60–130 90–155 60–130
Path Width 46 in. (1,168 mm)
Shipping Weight 285 lb. (129.3 kg) 300 lb. (136.1 kg)
J36/B46-M30 SERIES WALK-BEHIND TROWELS • OPERATION MANUAL — REV. #1 (11/17/17) — PAGE 13
SPECIFICATIONS (ENGINE)
Table 3. Honda Engine Specifications
Model
Honda
GX160UT2QX2
Trowel JH55C/M30H55
Type
Bore × Stroke
Air-cooled, 4-stroke, single-cylinder, OHV, horizontal PTO shaft,
2.70 in. × 1.8 in.
(69 mm × 46 mm)
Displacement 163 cm³ 270 cm³ 387 cm³
Max Output 5.4 hp @ 3600 rpm 9 hp @ 3600 rpm 11 hp @ 3600 rpm
Fuel Tank Capacity
~ 0.95 U.S. gallons
(3.6 liters)
Fuel Unleaded gasoline
Lube Oil Capacity 0.63 qt. (0.6 liters) 1.06 qt. (1.0 liters) 1.06 qt. (1.0 liters)
Oil Type 4-stroke API, SF or SG SAE 10W-30 general use
Speed Control
Method
Centrifugal flyweight type
Starting Method Recoil start
Dimensions
(L × W × H)
12.3 × 14.3 × 13.2 in.
(312 × 363 × 335 mm
Dry Net Weight 33.1 lb. (15 kg) 55.1 lb. (25 kg) 68 lbs (29 Kg.)
Honda
GX270UTQA2
J36H90/J36H90H
B46H90
gasoline engine
3.0 in. × 2.3 in.
(76 mm × 58 mm)
~ 1.59 U.S. gallons
(6.02 liters)
14.0 × 16.9 × 16.1 in.
(356 × 429 × 409 mm)
Honda
GX340U1QAP2
B46H11/B46H11H
3.2 in. × 2.5 in.
(81 mm × 64 mm)
~ 1.72 U.S. gallons
(6.5 liters)
16.7 × 17.7 × 17.4 in.
(424 × 450 × 442 mm)
Table 4. Robin/Subaru Engine Specifications
Model
Robin
EX170D50040
Trowel J36R60
Type
Bore × Stroke
2.64 in. × 1.89 in.
(67 mm × 48 mm)
Air-cooled, 4-stroke, slant single cylinder, OHC,
Displacement 169 cm³ 265 cm³ 10.31 in³ (169 cm³) 265 cm³
Max Output 5.7 hp @ 4000 rpm 9 hp @ 4000 rpm 5.7 hp @ 4000 rpm 9 hp @ 4000 rpm
Fuel Tank Capacity
~ 0.95 U.S. gallons
(3.6 liters)
Fuel Unleaded gasoline
Lube Oil Capacity 0.63 qt. (0.6 liters) 1.06 qt. (1.0 liters) 0.63 qt. (0.6 liters) 1.06 qt. (1.0 liters)
Oil Type 4-stroke API, SF or SG SAE 10W-30 general use
Speed Control
Method
Starting Method Recoil start
Dimensions
(L × W × H)
11.97 × 13.94 × 13.2 in.
(304 × 354 × 335 mm)
Dry Net Weight 33.1 lb. (15 kg) 46.3 lb. (21 kg) 33.1 lb. (15 kg) 46.3 lb. (21 kg)
Robin
EX270D50020
EX170DM2230
J36R90/J36R90H
B46R90
horizontal PTO shaft, gasoline engine
2.95 in. × 2.36 in.
(75 mm × 60 mm)
~ 1.59 U.S. gallons
(6.02 liters)
2.64 in. × 1.89 in.
(67 mm × 48 mm)
~ 0.95 U.S. gallons
(3.6 liters)
Centrifugal flyweight type
13.82 × 16.54 × 16.14 in.
(351 × 420 × 410 mm)
11.97 × 13.94 × 13.19 in.
(304 × 354 × 335 mm)
Subaru
Subaru
EX270D5E5013
J36S60 B46S90
2.95 in. × 2.36 in.
(75 mm × 60 mm)
~ 1.59 U.S. gallons
(6.02 liters)
13.82 × 16.54 × 16.14 in.
(351 × 420 × 410 mm)
PAGE 14 — J36/B46-M30 SERIES WALK-BEHIND TROWELS • OPERATION MANUAL — REV. #1 (11/17/17)
SPECIFICATIONS (EMISSIONS)
Table 5. J-Series Trowel Noise and Vibration Emissions
Model J36H55 J36R60 J36S60 J36H90 J36R90 J36H90H J36R90H M30H55
Guaranteed ISO
11201:2010 Based
Sound Pressure Level at
Operator Station in dB(A)
Guaranteed ISO
3744:2010 Based Sound
Power Level in dB(A)
b
Hand-Arm Vibration Per
ISO 5349-1:2001
2
in m/s
∑A(8)
Model B46H90 B46S90 B46H11 B46R90 B46H11H
Guaranteed ISO 11201:2010
Based Sound Pressure Level
at Operator Station in dB(A)
Guaranteed ISO 3744:2010 Based
Sound Power Level in dB(A)
Hand-Arm Vibration Per ISO 5349-
1:2001 in m/s
a. With an uncertainty factor K of 2.5 dB (A) included per Note 1 in section 7.2.1 of EN 12649::2008+A1:2011
b. With an uncertainty factor K of 1.5 dB (A) included per Note 1 in section 7.2.1 of EN 12649::2008+A1:2011
Quick Pitch
Standard Handle 87 91 90.79 N/A N/A 90 N/A N/A
a
Quick Pitch
Standard Handle 108 105 104.3 N/A N/A 107 N/A N/A
Quick Pitch
Standard Handle 1.1 1.20 1.20 N/A N/A 1.50 N/A N/A
2
∑A(8)
TM
Handle
TM
Handle
TM
Handle
87 91 90.79 N/A N/A 90 N/A N/A
108 105 104.3 N/A N/A 107 N/A N/A
1.6 1.18 1.18 N/A N/A 0.98 N/A N/A
Table 6. B-Series Trowel Noise and Vibration Emissions
Quick Pitch
Handle
a
Standard Handle 89 86.76 90.79 N/A N/A
Quick Pitch
b
Handle
Standard Handle 111 105.11 104.3 N/A N/A
Quick Pitch
Handle
Standard Handle 1.51 0.97 1.20 N/A N/A
TM
89 86.76 90.79 N/A N/A
TM
111 105.11 104.3 N/A N/A
TM
1.7 0.87 1.18 N/A N/A
NOTES:
1. Sound pressure and power levels are “A” weighted measures per ISO 3744:2010. They are measured with the operating condition of the
machine which generates the most repeatable but highest values of the sound levels. Under normal circumstances, the sound level will vary
depending on the condition of the material being worked upon.
2. The vibration level indicated is the vector sum of the RMS (root mean Ssquare) values of amplitudes on each axis, standardized to an 8-hour
exposure period, and obtained using the operating condition of the machine that generates the most repeatable but highest values in accordance
with the applicable standards for the machine.
3. Per EU Directive 2002/44/EC, the daily exposure action value for hand/arm vibration is 2.5 m/s
is 5 m/s2 ∑A(8).
J36/B46-M30 SERIES WALK-BEHIND TROWELS • OPERATION MANUAL — REV. #1 (11/17/17) — PAGE 15
2
∑A(8). The daily exposure limit value
DIMENSIONS
B
C
AAA
SIDE VIEW
Standard Handle Shown
TOP VIEW
D
Figure 1. Trowel Dimensions
Table 7. Trowel Dimensions
Model J36 Series M30H55 B46 Series
(A) Height (Lifting Bale) 27 in. (686 mm) 26 in. (660 mm) 31.5 in. (800 mm)
(B) Height (Handle) 41.5 in. (1,054 mm)
(C) Width (Ring Diameter) 36 in. (914 mm) 30 in. (762 mm) 46.5 in. (1,181 mm)
(D) Length 74 in. (1,880 mm) 68 in. (1,727 mm) 81.4 in. (2,068 mm)
PAGE 16 — J36/B46-M30 SERIES WALK-BEHIND TROWELS • OPERATION MANUAL — REV. #1 (11/17/17)
GENERAL INFORMATION
INTENDED USE
Operate this trowel, its components and tools in accordance
with the manufacturer's instructions. Use of any other tools
for stated operation is considered contrary to designated
use. The risk of such use lies entirely with the user. The
manufacturer cannot be held liable for damages as a result
of misuse.
TROWEL FAMILIARIZATION
Read all safety instructions carefully. Safety instructions
will 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.
This walk-behind trowel is designed for the floating and
finishing of concrete slabs.
Walk around the trowel and take notice of all the major
components (Figure 2)—the engine, blades, steering
handle, gearbox, etc. Make sure there is always oil in the
engine.
Gearbox
The gearbox is located beneath the engine and transfers
power to the spider assembly. The gearbox controls the
rotational speed of the trowel and is equipped with two
shafts (input and output).
Spider
The vertical output shaft of the gearbox connects to a
cast hub called the spider. The spider has four arms that
extend outward, to which blades or other accessories are
attached. As the gearbox output shaft rotates, so does the
spider assembly.
Blades
The blades of the trowel finish concrete as they are rotated
around the surface. This trowel comes equipped with four
combination blades, equally spaced in a radial pattern,
attached to the vertical rotating shaft by means of the
spider assembly.
Guard Ring
Before using your trowel, test it on a flat, watered-down
section of finished concrete that is free of debris and other
objects.
This trial test run will increase your confidence in using the
trowel and will familiarize you with the trowel’s controls. You
will learn how the trowel handles under actual conditions.
Engine
These trowels are equipped with gasoline engines
(see Table 3 and Table 4) that range from 5.4 to 11
horsepower. Refer to the engine owner’s manual for
instructions regarding the operation and maintenance of
your engine. If the original manual is lost or damaged, please
contact your nearest Multiquip dealer for a replacement.
Drive System
Power is transferred from the engine to the gearbox input
shaft via a V-belt pulley drive system. The pulley engages
a centrifugal clutch.
This unit is equipped with a safety guard ring to help prevent
objects from coming into contact with the rotating blades
while the trowel is in operation.
Centrifugal
In the event of a trowel runaway condition (the operator
releases the handlebar during operation), the centrifugal
safety stop switch will stop the engine and bring the trowel
to a halt.
Safety Stop Switch
TRAINING
For proper training, please use the Training Checklist
form located in the front of this manual. This checklist will
provide an outline for an experienced operator to provide
training to a new operator.
J36/B46-M30 SERIES WALK-BEHIND TROWELS • OPERATION MANUAL — REV. #1 (11/17/17) — PAGE 17
COMPONENTS (TROWEL)
16
5
6
8
9
7
3
4
10
2
11
1
15
14
13
12
17
QUICK PITCH™
HANDLE (OPTION)
PAGE 18 — J36/B46-M30 SERIES WALK-BEHIND TROWELS • OPERATION MANUAL — REV. #1 (11/17/17)
Figure 2. Trowel Components
COMPONENTS (TROWEL)
Figure 2 shows the location of the basic trowel components.
Listed below is a brief explanation of each component.
1. Access Panel — Allows access to the blade area.
NEVER run the trowel with the access panel removed.
2. Engine — Gasoline engine. Refer to Table 3 and
Table 4 for engine specifications.
3. Lifting Bail — Attach a suitable lifting device to the
lifting bail whenever lifting of the trowel is required.
4. Throttle Lever — Controls engine speed. Returns the
engine to idle when released.
5. Operator Presence Lever (Optional) — In the event
of a trowel runaway condition (the operator releases
the handle), the operator presence lever signals the
safety stop switch which will stop the engine and bring
the trowel to a halt.
6. Vibratory Handlebar — Rubber shock mounts/
isolators reduce trowel vibration.
7. Pitch Control Star Wheel — To adjust the pitch
of the blades, rotate the star wheel clockwise to
pitch the blades upward. Rotate the star wheel
counterclockwise to pitch the blades flat (no pitch).
8. Handlebar Pad — Foam rubber pad that protects the
body when coming into contact with the handlebar.
11. Centrifugal Safety Stop Switch — If the operator
loses control of the trowel, this switch will shut down
the engine.
12. Blades (4) — Versatile combination blades should take
care of most troweling needs.
13. V-Belt Cover — Remove this cover to gain access to
the V-belt. NEVER operate the trowel with this cover
removed.
14. Guard Ring — NEVER put hands or feet inside the
guard ring while the engine is running.
15. Gearbox — Helical worm gear drive gearbox. Provides
rotation of blades via engine interface. ALWAYS check
the gearbox oil level (sight glass) prior to each use. Fill
with Mobil SHC™ 634 gearbox oil as needed.
16. Trowel Arms (4) — Combination blades attach here.
In addition, float discs can be attached to the trowel
arms that will allow the trowel to “float” on wet concrete.
NOTICE
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. Refer
to the Maintenance section for more information.
9. Hand Grips (2) — ALWAYS place hands on both hand
grips when maneuvering the trowel. Replace hand grips
when they become worn or damaged.
10. Handlebar Adjuster — Change the angle or height
of the handlebar by loosening the star wheel. Adjust
the handlebar to the desired location and tighten the
star wheel firmly to secure the handlebar in position.
17. Quick Pitch™ Control Handle —
of the blades upward using the Quick Pitch™ handle,
simply pull the T-handle backward while squeezing the
trigger. Push the T-handle forward to pitch the blades flat
(no pitch).
Contact Multiquip unit sales to purchase
To adjust the pitch
this option.
J36/B46-M30 SERIES WALK-BEHIND TROWELS • OPERATION MANUAL — REV. #1 (11/17/17) — PAGE 19
COMPONENTS (ENGINE)
11
10
9
8
7
6
5
1
2
HONDA GX
4
3
Figure 3. Basic Engine Components
INITIAL SERVICING
The engine (Figure 3) must be checked for proper
lubrication and filled with fuel prior to operation. Refer to
the manufacturer's engine manual for detailed operation
and service instructions.
1
2
3
ROBIN-SUBARU EX
4
10
9
11
8
7
CLOSE
OPEN
6
5
6. Fuel Valve Lever — Open to allow fuel to flow. Close
to prevent fuel flow.
7. Oil Filler Cap/Dipstick — Remove this cap to
determine if engine oil is low. Add oil through this filler
port as recommended in Table 8.
1. Fuel Filler Cap/Fuel Tank — Remove this cap to add
unleaded gasoline to the fuel tank. Refer to Table 3
or Table 4 for fuel tank capacity. Make sure the cap is
tightened securely. DO NOT overfill.
DANGER
Add fuel to the tank 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 all
fuel residue has been completely wiped up
and the area surrounding the engine is dry.
2. Throttle Lever — Adjusts engine RPM speed.
3. Engine ON/OFF Switch — ON position permits engine
starting. OFF position stops engine operation.
4. Recoil Starter — Manual starting method. Pull the
starter grip until resistance is felt, then pull briskly and
smoothly to start the engine.
5. Oil Drain Bolt — Remove this bolt to drain oil from the
engine's crankcase.
8. Choke Lever — Used in cold weather conditions or
for the starting of a cold engine. The choke enriches
the fuel mixture.
9. Air Cleaner — Prevents dirt and other debris from
entering the fuel system. Remove the wing nut on
top of the air cleaner cover to gain access to the filter
elements.
NOTICE
Operating the engine without an air cleaner, with a
damaged air cleaner, or with an air cleaner in need of
replacement will allow dirt to enter the engine, causing
rapid engine wear.
10. Spark Plug — Provides spark to the ignition system.
Set the spark plug gap according to the engine
manufacturer's instructions. Clean the spark plug once
a week.
11. Muffler — Reduces noise and emissions. NEVER
touch the muffler while it is hot!
PAGE 20 — J36/B46-M30 SERIES WALK-BEHIND TROWELS • OPERATION MANUAL — REV. #1 (11/17/17)
SET-UP
UNPACKING THE HANDLE
The handle (Figure 4) is shipped in the folded, or stowed,
position.
1. To place the folding upper handle in the operational
position, turn the star wheel counterclockwise to
release it from its folded/stowed position.
2. Pull back on the upper handle to place the handle in
the operational position. Turn the star wheel clockwise
to secure the handle firmly in place.
OPERATIONAL
POSITION
FOLDED
POSITION
OPERATIONAL
POSITION
STAR
WHEEL
ASSEMBLY AND INSTALLATION
Some components must be installed before the trowel can
be operated. This section provides general instructions
on how to install these components. For more detailed
handle assembly intructions, contact Multiquip and
request Instruction Sheet P/N 20485.
Handle Tube Installation
Attach the main handle (tube) to the gearbox using the
supplied hardware as shown in Figure 5.
MAIN HANDLE
(TUBE)
3/8 FLAT
WASHER
3/8-16
NYLOC NUT
UPPER
HANDLE
Figure 4. Unpacking the Handle
3/8-16 X 3.25
HHC SCREW
Figure 5. Handle Tube Installation
GEARBOX
Vibratory Handlebar Adjustment
The vibratory handlebar is already attached to the main
handle tube.
To adjust the height of the handlebar, loosen the star wheel
(Figure 6), and move the handlebar to the desired position.
Tighten the star wheel firmly to secure.
HANDLEBAR
HEIGHT
ADJUSTMENT
STAR WHEEL
Figure 6. T-Handle Bar Adjustment
J36/B46-M30 SERIES WALK-BEHIND TROWELS • OPERATION MANUAL — REV. #1 (11/17/17) — PAGE 21
SET-UP
THROTTLE
NOTICE
If additional handlebar adjustment is desired, a trowel
handle wedge kit (P/N 2576) can be purchased from
your Multiquip dealer.
The wedges are placed between the handle and
the gearbox, which will move your handle operating
position approximately 3 inches (76 mm) up or down.
The kit comes complete with wedges, new bolts, and
installation instructions.
Throttle Cable Installation
1. Uncoil the throttle cable and housing.
2. Make sure the throttle cable is fed through the tube on
the underside of the handle and secured to the upper
handle and main tube with zip ties.
3. Place the throttle lever (Figure 7) in the RUN position.
RUN
5. Place the primary throttle return spring between
the cable housing clamp and the swivel stop screw
(Figure 8).
6. Feed the cable assembly through the cable housing
clamp, return spring, and swivel stop hole, until the
cable housing extends under the housing clamp to its
far edge (Figure 8).
7. On the throttle lever, slightly loosen the locking nut and
cable retaining screw (Figure 9).
LOCKING
NUT
THROTTLE
LEVER
RUN
THROTTLE CABLE
IDLE
CABLE
RETAINING
SCREW
RECEIVER
Figure 9. Adjusting Cable Tension
CABLE
THROTTLE
WIRE
THROTTLE
LEVER
Figure 7. Throttle Lever (Run)
4. Loosen the cable housing clamp screw and the swivel
stop screw (Figure 8).
CABLE
END
ADJUSTER
NUT
SWIVEL
STOP
SCREW
CABLE
HOUSING
CLAMP
CLAMP
RETURN
SPRING
HOUSING
CABLE
END
THROTTLE
CABLE
SWIVEL
STOP HOLE
8. Make sure the throttle cable is seated in the throttle
cable receiver (Figure 9).
9. Route the throttle wire approximately 1/2 inch past
the cable retaining screw (Figure 9). Tighten the cable
retaining screw to secure the throttle wire.
10. Adjust cable tension as needed by loosening or
tightening the locking nut and cable retaining screw
on the throttle lever (Figure 9).
NOTICE
If the throttle lever does not return to the neutral
position with the throttle backed off, loosen the adjusting
nut 1/2 turn at a time, tighten, and recheck. Readjust
throttle tension as necessary.
Figure 8. Throttle Cable Installation
PAGE 22 — J36/B46-M30 SERIES WALK-BEHIND TROWELS • OPERATION MANUAL — REV. #1 (11/17/17)
SET-UP
Centrifugal Safety Stop Switch Connection
Connect the black tail wire from the engine to the black
safety stop wire from the centrifugal stop switch as shown
in Figure 10.
SAFETY STOP WIRE
CONNECTION POINT
Figure 10. Centrifugal Safety Stop Switch
Connection
Blade Pitch Cable Installation
1. For trowels equipped with a standard handle (SXHC),
turn the star wheel counterclockwise to release
tension on the blade pitch cable. See Figure 11.
INCREASE
BLADE PITCH
(CW)
DECREASE
BLADE PITCH
(CCW)
T-HANDLE
TRIGGER
LOCK
NO
PITCH
FULL
PITCH
Figure 12. Blade Pitch Cable Adjustment
(Quick Pitch™ Handle)
WARNING
The Quick Pitch™ T-handle is under spring tension and
can snap in the direction of force (toward the user) if not
firmly grasped, which may cause bodily injury.
3. Remove brass set nut #1 from the end of the blade
pitch cable (Figure 13).
BLADE
PITCH
CABLE
Figure 11. Blade Pitch Cable Adjustment
(Standard Handle)
2. For trowels equipped with a Quick Pitch™ handle
(QXHC), squeeze the trigger lock and push the
T-handle towards the engine to release tension on the
blade pitch cable. See Figure 12.
BRASS SET
NUT #1
BRASS SET
NUT #2
Figure 13. Blade Pitch Cable
4. Thread brass set nut #2 as far as possible towards the
blade pitch cable (Figure 13).
J36/B46-M30 SERIES WALK-BEHIND TROWELS • OPERATION MANUAL — REV. #1 (11/17/17) — PAGE 23
SET-UP
5. Insert the blade pitch cable end through the yoke eyelet
(Figure 14). Tighten brass set nut #1 by hand to remove
all slack from the cable.
BLADE
PITCH
CABLE
YOKE
YOKE
EYELET
BRASS SET
NUT #2
BRASS SET
NUT #1
Figure 14. Cable Yoke Attachment
6. Tighten brass set nut #2 against the yoke boss to
secure the cable in place.
7. Tighten brass set nut #1 against the yoke boss.
Pre-Load Adjustment (Quick Pitch™ Handle Only)
WARNING
ALIGNMENT
DECAL
PRELOAD TRIM INDICATOR
FINISH
FINISH
COMBO
J
COMBO
J
PRELOADTRIM INDICATOR
FINISH
COMBO
B
ADJUSTMENT
SCREW
COMBO
B
FINISH
SLIDER
GROOVE
Figure 15. Spring Pre-Load Adjustment
2. An alignment decal (Figure 15) has been placed on
the side of the handle tube to assist the user in the
adjustment of the Quick-Pitch™ handle spring. If using
a J36 series trowel, align the groove on the slider with
the letter “J” on the decal. If using a B46 series trowel,
align the groove on the slider with the letter “B” on the
decal.
CAUTION
ALWAYS wear approved eye and hearing
protection while operating the trowel.
The Quick Pitch™ handle is spring-loaded. Personal
injury or damage can result from improper handling,
installation, or adjustment. Use extreme caution when
handling this component.
After the Quick-Pitch™ handle has been installed, spring
pre-load adjustment is required.
1. Locate the spring pre-load adjustment screw (Figure 15)
on the underside of the handle tube.
NEVER place hands or feet inside the
guard ring while the engine is running.
ALWAYS shut the engine down before
performing any maintenance service on
the trowel.
PAGE 24 — J36/B46-M30 SERIES WALK-BEHIND TROWELS • OPERATION MANUAL — REV. #1 (11/17/17)
SET-UP
BLADE
Float Disc Installation (Optional)
Float discs, or pans, attach to the trowel blades and allow
the trowel to float on wet concrete. The disc design allows
early floating and easy movement from wet to dry areas.
Float discs are also very effective for embedding large
aggregates and surface hardeners.
Installing Pans with Z-Clips
Refer to Figure 16 when installing pans onto trowel blades
using Z-clips.
BLADE
TIE-DOWN
Z-CLIP
TIE-DOWN
KNOB
BLADE BAR
Installing Pans with Latch Pins
Refer to Figure 17 when installing pans onto trowel blades
using latch pins.
BLADE STOP
LATCH PIN
BLADE
FLOAT DISC/PAN
Figure 17. Float Disc Installation (Latch Pins)
FLOAT DISC/PAN
Figure 16. Float Disc Installation (Z-Clips)
1. Lift the trowel just enough to slide pans under the
blades. Lower the trowel onto the pans with the blades
adjacent to the Z-clips.
2. Rotate the blades into position under the Z-clips. Be
sure to rotate the blades in the operational direction
of travel, or use the engine to rotate the blades into
position.
3. Secure the blade tie-downs to the far side of the Z-clip
brackets with the tie-down knobs.
4. Make sure the blade edges are secured under the
Z-clips, and the tie-downs are secured completely over
the edges of the blade bar.
1. Lift the trowel just enough to slide pans under the
blades. Lower the trowel onto the pans with the blades
between the blade stops.
2. Fit the blades between the blade stops. Be sure to
rotate the blades in the operational direction of travel,
or use the engine to rotate the blades into position.
3. Route the latch pins through the blade stop holes.
4. Make sure the blade edges are secured between the
blade stops, and the latch pins are secured completely
over the blades.
J36/B46-M30 SERIES WALK-BEHIND TROWELS • OPERATION MANUAL — REV. #1 (11/17/17) — PAGE 25
INSPECTION
ENGINE OIL
1. Place the trowel on secure, level ground with the
engine OFF.
2. Remove the dipstick (Figure 18) from the engine oil
filler hole and wipe it clean.
DIPSTICK
Figure 18. Engine Oil Dipstick
3. Reinsert the dipstick, then remove it again without
screwing it into the filler neck. Check the oil level shown
on the dipstick.
4. If the oil level is low (Figure 19), fill to the edge of the
oil filler hole with the recommended oil type as listed
in Table 8. Refer to Table 3 or Table 4 for maximum
engine oil capacity.
FUEL
Remove the fuel filler cap and inspect the fuel level in the
tank. If fuel is low, replenish with unleaded fuel.
DANGER
Motor fuels are highly flammable and
can be dangerous if mishandled. DO NOT
smoke while refueling. NEVER attempt to
refuel while the engine is running or hot!
WARNING
ALWAYS use a strainer for filtration while refueling.
NEVER top off fuel. ALWAYS wipe up any spilled fuel
immediately.
GEARBOX OIL
1. Look at the sight glass on the side of the gearbox
(Figure 20) to determine if gearbox oil is low. The
correct oil level is to the halfway point on the sight glass.
GEARBOX
SIGHT GLASS
UPPER LIMIT
DRAIN/FILL
PLUG
LOWER LIMIT
Figure 20. Gearbox Oil
Figure 19. Engine Oil Level
Table 8. Engine Oil Type
Season Temperature Oil Type
Summer 25°C or Higher SAE 10W-30
Spring/Fall 25°C–10°C SAE 10W-30/20
Winter 0°C or Lower SAE 10W-10
PAGE 26 — J36/B46-M30 SERIES WALK-BEHIND TROWELS • OPERATION MANUAL — REV. #1 (11/17/17)
2. If gearbox oil is low, remove the drain/fill plug
(Figure 20) and fill with industrial synthetic gear oil
until the correct oil level is reached. Refer to Table 3
or Table 4 for the correct oil type. Replace the drain/fill
plug when finished.
3. If there is too much oil in the gearbox, remove the
drain/fill plug and allow the oil to seep out. Replace the
plug once the correct oil level is reached.
OIL-SOAKED
WEAR
INSPECTION
CLUTCH
PULLEY
V-BELT
1. Inspect the V-belt (Figure 21) to determine if it is frayed,
peeling, full of tiny cracks, has pieces of rubber missing,
or is otherwise damaged.
GLAZED
CRACKS
SIDEWALL
Figure 21. V-Belt Inspection
2. Inspect the V-belt (Figure 21) to determine if it is
oil-soaked or glazed (a hard, shiny appearance on the
sides of the belt). Either of these conditions can cause
overheating of the belt, which may weaken the belt and
increase the danger of it breaking.
CORD FAILURE
WORN BACK
COVER
BROKEN
MISSING
RUBBER
V-BELT TENSION
The V-belt tension (Figure 22) is correct if the V-belt bends
10–15 mm when depressed with a finger midway between
the clutch and lower pulley.
PULLEY
V-BELT
Figure 22. V-Belt Tension
CORRECT V-BELT
TENSION BETWEEN
10–15 MM WHEN
DEPRESSED AS SHOWN
LOWER
BELT GUARD
Inspect the belt guard (Figure 23) for damage, and for loose
or missing hardware.
CRACK
3. Replace the V-belt immediately if any of the
aforementioned wear conditions are observed.
MOUNTING
HARDWARE
Figure 23. Belt Guard Inspection
MISSING
HARDWARE
CRACK
J36/B46-M30 SERIES WALK-BEHIND TROWELS • OPERATION MANUAL — REV. #1 (11/17/17) — PAGE 27
BLADES
Inspect the trowel blades for wear or damage (Figure 24). If
one blade is worn out while the others look new, there could
be a blade pitch problem. Refer to the Maintenance section
of this manual for the blade pitch adjustment procedure.
Replace any worn or damaged blades immediately.
WORN
Figure 24. Blade Inspection
INSPECTION
CENTRIFUGAL SAFETY STOP SWITCH
Your trowel is equipped with a centrifugal safety stop switch
(Figure 25). This switch should be tested every time the
engine is started.
The switching mechanism should operate freely, and should
always be kept in this condition. With 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 releases the handle during operation).
OFF
ON
CENTRIFUGAL
SAFETY STOP
SWITCH
Figure 25. Centrifugal Safety Stop Switch
PAGE 28 — J36/B46-M30 SERIES WALK-BEHIND TROWELS • OPERATION MANUAL — REV. #1 (11/17/17)
OPERATION
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.
BEFORE STARTING
NOTICE
DO NOT attempt to operate the trowel until the Safety,
General Information and Inspection sections of this
manual have been read and thoroughly understood.
1. Clean the trowel, particularly the engine cooling air
inlet. Remove all dirt and dust.
2. Inspect the engine air cleaner for dirt and dust. If the
air cleaner is dirty, replace it with a new one.
3. Inspect the carburetor for external dirt and dust. Clean
with dry compressed air as needed.
4. Inspect all fastening nuts and bolts for tightness.
Lifting Bail
The lifting bail provides an optimal lift point for the trowel.
When lifting the trowel onto a concrete slab, attach a chain
or rope to the lifting bail. Make sure the capacity of the lifting
device is adequate for the weight of the trowel.
Using a crane or forklift to lift the trowel (Figure 26) is highly
recommended, and is perfectly safe for the trowel. ALWAYS
use extra care when lifting the trowel off the ground.
LIFT
LIFTING THE TROWEL
WARNING
Extra care should be taken when lifting the trowel.
Serious personal injury or damage to the equipment
can be caused by a dropped trowel.
WARNING
NEVER attempt to lift this machine alone. NEVER lift
the trowel by the guard ring, as the trowel may rotate
and cause injury.
ALWAYS make sure the handle is secure, and use only
the manufacturer's approved lifting point. The trowel
may be lifted by the center lifting bail using a crane or
other device with adequate lifting capacity.
CAUTION
NEVER lift the trowel to unnecessary heights. NEVER
stand underneath the trowel while it is being lifted.
Figure 26. Lifting the Trowel
STARTING THE ENGINE
1. Place the engine fuel valve lever in the OPEN position
(Figure 27).
HONDA GX
FUEL
VALVE
LEVER
OPEN
Figure 27. Engine Fuel Valve Lever (Open)
ROBIN-SUBARU EX
FUEL
VALVE
CLOSE
OPEN
LEVER
OPEN
J36/B46-M30 SERIES WALK-BEHIND TROWELS • OPERATION MANUAL — REV. #1 (11/17/17) — PAGE 29
OPERATION
ENGINE SWITCH
2. Place the engine ON/OFF switch in the ON position
(Figure 28).
OFF
ON
Figure 28. Engine ON/OFF Switch (ON)
3. Place the throttle lever in the IDLE position (Figure 29).
IDLE
HONDA GX
CHOKE
LEVER
OPEN
ROBIN-SUBARU EX
CHOKE
CLOSE
OPEN
OPEN
LEVER
Figure 31. Choke Lever (Open)
6. Slowly pull the starter grip (Figure 32) until resistance
is felt, then pull briskly and smoothly to start the engine.
Gently return the starter grip to its original position.
THROTTLE
LEVER
Figure 29. Throttle Lever (Idle)
4. If starting a cold engine, place the choke lever in the
CLOSED position (Figure 30).
HONDA GX
CHOKE
LEVER
CLOSED
Figure 30. Choke Lever (Closed)
ROBIN-SUBARU EX
CHOKE
CLOSE
CLOSED
OPEN
LEVER
5. If starting a warm engine, place the choke lever in the
OPEN position (Figure 31).
STARTER GRIP
Figure 32. Starter Grip
7. If the engine has started, slowly return the choke lever
to the CLOSED position (Figure 30). If the engine has
not started, repeat steps 1 through 6.
8. Before operating the trowel, run the engine for several
minutes and check for fuel leaks and loose components.
CENTRIFUGAL SAFETY STOP SWITCH TEST
1. Clear the area around the trowel. Make sure it is free of
debris and objects.
PAGE 30 — J36/B46-M30 SERIES WALK-BEHIND TROWELS • OPERATION MANUAL — REV. #1 (11/17/17)
OPERATION
SWITCH
2. With the engine running at idle, place the safety stop
switch lever in the OFF position (Figure 33). Verify that
the engine shuts off. If the engine continues to run,
replace the centrifugal safety stop switch.
OFF
CENTRIFUGAL
SAFETY STOP
Figure 33. Centrifugal Safety Stop Switch (OFF)
3. Place the safety stop switch lever in the ON position,
restart the engine, and let it idle.
4. Stand behind the handle in the operator's position
(Figure 34) and spin the handle to the right, simulating
a runaway condition. Centrifugal force should throw
the safety switch outward to the OFF position, thus
shutting off the engine.
PITCHING THE BLADES
Standard Handle
To pitch the blades upward with the standard handle
(Figure 36), turn the star wheel clockwise. Turn the star
wheel counterclockwise to pitch the blades flat (no pitch).
BLADE PITCH
STAR WHEEL
INCREASE
BLADE PITCH
(CW)
Figure 36. Pitching the Blades
(Standard Handle)
DECREASE
BLADE PITCH
(CCW)
C
L
E
P
E
E
K
K
E
E
A
R
R
A
E
P
L
C
Figure 34. Centrifugal Safety Stop Switch Test
TO BEGIN TROWELING
Place the throttle lever (Figure 35) in the RUN position.
RUN
THROTTLE
LEVER
Quick Pitch™ Handle
To pitch the blades upward with the Quick Pitch™ handle
(Figure 37), pull the T-handle backward while squeezing
the trigger lock. Push the T-handle forward to pitch the
blades flat (no pitch).
T-HANDLE
TRIGGER
LOCK
NO
PITCH
Figure 37. Pitching the Blades
(Quick Pitch™ Handle)
FULL
PITCH
Figure 35. Throttle Lever (Run)
J36/B46-M30 SERIES WALK-BEHIND TROWELS • OPERATION MANUAL — REV. #1 (11/17/17) — PAGE 31
MANEUVERING THE TROWEL
OPERATION
1. Stand in the operator’s position behind the handle. With
secure footing and a firm grasp on the handle, slowly
increase the engine speed until the desired blade speed
is obtained.
2. Figure 38 illustrates a typical walk-behind trowel
application. Practice maneuvering the trowel. The trick
is to let the trowel do the work.
To move the trowel to the operator’s left,
lift up on the handle. To move the trowel
to the right, push down on the handle.
REMEMBER! If
you let go of the
trowel, simply step
away and let the
trowel come to a
complete STOP
before trying to
recover it.
3. Continue to practice maneuvering the trowel as if
finishing a slab of concrete. Practice edging and
covering a large area.
4. An effective finishing technique is to work backward.
Be careful when moving backward so that hazards
can be avoided. The best way to get accustomed to
the trowel is repeated use.
BACKWARD
BACKWARD
The best method for finishing concrete is
to slowly walk backward with the trowel,
guiding it from side to side. This will cover
any footprints in the wet concrete.
Figure 38. Maneuvering the Trowel
CAUTION
NEVER place your hands or feet inside the guard rings
while starting or operating this equipment.
PAGE 32 — J36/B46-M30 SERIES WALK-BEHIND TROWELS • OPERATION MANUAL — REV. #1 (11/17/17)
CAUTION
ALWAYS stay clear of rotating or moving parts while
operating this equipment.
OPERATION
SWITCH
CONCRETE FINISHING TECHNIQUES
The instructions in this manual are provided as a basic
guide to trowel operation, not a complete guide to concrete
finishing. We suggest that all operators (experienced and
novice) read Slabs on Ground published by the American
Concrete Institute.
STOPPING THE TROWEL
1. Return the throttle lever to the IDLE position (Figure 39)
and let the engine run for three minutes at low speed.
IDLE
THROTTLE
LEVER
3. Place the centrifugal safety stop switch (Figure 41) in
the OFF position.
OFF
CENTRIFUGAL
SAFETY STOP
Figure 41. Centrifugal Safety Stop Switch (OFF)
4. Place the fuel valve lever in the CLOSED position
(Figure 42).
HONDA GX
ROBIN-SUBARU EX
Figure 39. Throttle Lever (Idle)
2. Release the handle and place the engine ON/OFF
switch in the OFF position (Figure 40).
OFF
ON
ENGINE SWITCH
Figure 40. Engine ON/OFF Switch (OFF)
FUEL
VALVE
LEVER
CLOSED
CLOSE
OPEN
VALVE
LEVER
Figure 42. Fuel Valve Lever (Closed)
FUEL
CLOSED
J36/B46-M30 SERIES WALK-BEHIND TROWELS • OPERATION MANUAL — REV. #1 (11/17/17) — PAGE 33
OPTIONS
HANDLES
Standard Handle
The standard walk-behind trowel handle (Figure 43) is
equipped with a star wheel for blade pitch adjustment.
Refer to the Operation section of this manual for more
information.
BLADE PITCH
STAR WHEEL
Quick Pitch™ Handle (Optional)
The optional Quick Pitch™ handle (Figure 44) allows the
operator to quickly and easily adjust blade pitch. Refer to
the Operation section of this manual for more information.
Please contact Multiquip unit sales to order this option.
Figure 43. Standard Handle
Figure 44. Quick Pitch™ Handle
PAGE 34 — J36/B46-M30 SERIES WALK-BEHIND TROWELS • OPERATION MANUAL — REV. #1 (11/17/17)
BLADES AND PANS
Trowel blades are essential for finishing concrete. The
blades of this trowel were built to stringent quality standards
from the finest steel. Trowel blades should be replaced
when they fail to finish concrete in a satisfactory manner.
If replacement blades are needed, refer to the parts manual
included with your trowel for part numbers, and order from
your Multiquip parts dealer or importer.
Combo Blades (Standard)
This trowel is equipped with combination float/finish blades
(Figure 45), which provide optimal performance for both
floating and finishing operations. These blades are versatile
and should accomodate most troweling needs.
OPTIONS
Figure 47. Clip-On Float Blade
Float Discs (Optional)
Float discs, or pans (Figure 48), attach to the spider
assembly and allow the trowel to float on wet concrete.
The disc design allows early floating and easy movement
from wet to dry areas. Float discs are also very effective
for embedding large aggregates and surface hardeners.
Figure 45. Combination Blade
Finish Blades (Optional)
Finish blades (Figure 46) are specifically designed for
trowel finishing operations, and provide premium surface
finishing capability. Finish blades should only be used after
the concrete has partially dried enough to prevent the trowel
from sinking into the concrete when placed on it.
Figure 46. Finish Blade
Clip-On Float Blades (Optional)
Clip-on float blades (Figure 47) are easily installed onto
existing finish blades for floating purposes. They are easily
removed once floating is complete so that finishing can be
started immediately.
Figure 48. Float Disc/Pan
NOTICE
For optimal pan performance, blade speed must be
lowered using the Low Speed Kit (P/N 22587). Refer
to the Engine and Clutch Assembly section of the
trowel parts manual for more information.
TROWEL ARM ADJUSTMENT TOOL
If the trowel blades show uneven wear patterns, or some
blades wear out faster than others, the trowel arms
may need to be adjusted. A trowel arm adjustment tool
(P/N 1817) is available for consistent adjustment of all
trowel arms. See Figure 49.
J36/B46-M30 SERIES WALK-BEHIND TROWELS • OPERATION MANUAL — REV. #1 (11/17/17) — PAGE 35
Figure 49. Trowel Arm Adjustment Tool
Table 9. Engine Maintenance Schedule
MAINTENANCE
Description
(3)
Operation
Before
Each
Use
First Month
or 20 Hrs.
Every 6
Months or
100 Hrs.
Every Year
or 300 Hrs.
Every 2
Years or
500 Hrs.
Check X
Engine Oil
Change X X
Check X
Air Cleaner
Clean X (1)
Change X (*)
Check/Adjust X
Spark Plugs
Replace X
Spark Arrester Clean X
Fuel Filter Replace X (2)
Fuel Tube Check Every 2 years (replace if necessary) (2)
* Replace the paper filter element only.
(1) Service more frequently when used in dusty areas.
(2) These components should be serviced by your service dealer unless you have the proper tools and are mechanically
proficient. Refer to your engine shop manual for service procedures.
(3) For commercial use, log hours of operation to determine proper maintenance intervals.
Table 10. Trowel Maintenance Schedule
Periodic Maintenance Interval
Item Operation Daily
Every
50–60 Hrs.
Every
200–300 Hrs.
Every
2000–2500 Hrs.
V-Belt Check/Replace X
Relube Trowel Arms Grease X
Blades Check/Replace X
Trowel Arms Remove/Clean X
Thrust Collar/Bushing Remove/Clean X
Blade Arms Adjust X
Arm Bushing Remove/Replace X
Wear Ring Remove/Replace X
Thrust Collar Bearing Remove/Replace X
Pitch Control Cable Check X
Clutch Remove/Clean X
PAGE 36 — J36/B46-M30 SERIES WALK-BEHIND TROWELS • OPERATION MANUAL — REV. #1 (11/17/17)
MAINTENANCE
General maintenance practices are crucial to the
performance and longevity of your trowel. This equipment
requires routine cleaning, lubrication, and inspection of
components for wear or damage.
Refer to Table 9 and Table 10 to schedule engine and trowel
maintenance. The following maintenance procedures can
prevent serious trowel malfunction or damage.
DANGER
NEVER use gasoline or low flash point
solvents to clean the engine or any of
its components. The possibility exists
of fire or explosion which can damage
the equipment and cause severe bodily
harm or even DEATH.
WARNING
Some maintenance operations may
require a running engine. ALWAYS
make sure the maintenance area
is well ventilated. Gasoline engine
exhaust contains poisonous carbon
monoxide gas that can result in
unconsciousness and/or DEATH
when inhaled.
Air Cleaner
CAUTION
ALWAYS wear personal protective
equipment such as approved safety
glasses, face shields, dust masks, or
respirators when cleaning air filters with
compressed air.
The engine air cleaner is equipped with a replaceable,
high-density, paper element. Refer to Figure 50 (Honda)
and Figure 51 (Robin-Subaru) for air cleaner maintenance.
BLOW COMPRESSED
AIR FROM THE
INSIDE OUT
WING NUT
AIR CLEANER
COVER
FOAM FILTER
ELEMENT
PAPER FILTER
ELEMENT
CAUTION
ALWAYS allow the engine to cool before
servicing. NEVER attempt to service a
hot engine.
CAUTION
ALWAYS disconnect the spark plug wire from the
spark plug and secure it away from the engine before
performing trowel maintenance or adjustments.
ENGINE MAINTENANCE
Inspect the engine daily for cleanliness, any oil or fuel
leakage, or loose fasteners.
J36/B46-M30 SERIES WALK-BEHIND TROWELS • OPERATION MANUAL — REV. #1 (11/17/17) — PAGE 37
GASKET
Figure 50. Air Cleaner Maintenance (Honda)
1. Remove the air cleaner cover and foam filter element.
2. Tap the paper filter element several times on a hard
surface to remove dirt, or blow compressed air, not
exceeding 30 lb/in² (207 kPa, 2.1 kgf/cm²), through
the filter element from the inside out. NEVER brush off
dirt. Brushing will force dirt into the fibers. Replace the
paper filter element if it is excessively dirty.
3. Clean the foam element in warm, soapy water or a
nonflammable solvent. Rinse and dry thoroughly. Dip
the element in clean engine oil and completely squeeze
out the excess oil from the element before reinstalling.
BLOW COMPRESSED
OIL-SOAKED
WEAR
AIR FROM THE
INSIDE OUT
Figure 51. Air Cleaner Maintenance
(Robin-Subaru)
NOTICE
Operating the engine with loose or damaged air cleaner
components can allow unfiltered air into the engine,
causing premature wear and failure.
Engine Oil
NOTICE
ALWAYS drain the engine oil while the oil is warm.
Refer to Figure 52.
MAINTENANCE
3. Reinstall the drain bolt with sealing washer and tighten
securely.
Spark Plug
1. Remove the spark plug (Figure 53) and clean it with a
wire brush if it is to be reused. Replace the spark plug
if the insulator is cracked or chipped.
GAP (HONDA):
0.028 – 0.031 in.
(0.7 – 0.8 mm)
GAP (ROBIN-SUBARU):
0.024 – 0.028 in.
(0.6 – 0.7 mm)
Figure 53. Spark Plug
2. Using a feeler gauge, adjust the spark plug gap
(Figure 53). If your trowel has a Honda engine, the
gap should measure 0.028–0.031 inch (0.7–0.8 mm).
If your trowel has a Robin-Subaru engine, the gap
should measure 0.024–0.028 inch (0.6–0.7 mm).
3. To prevent cross-threading, thread the spark plug into
the cylinder hole by hand, then tighten securely.
OIL FILLER
DIPSTICK
DRAIN
BOLT
SEALING
WASHER
Figure 52. Draining Engine Oil
1. Remove the drain bolt and sealing washer, and allow
the oil to drain into a suitable container.
2. Replace the engine oil with the recommended oil type
listed in Table 8. For engine oil capacity, see Table 3
or Table 4. DO NOT overfill.
PAGE 38 — J36/B46-M30 SERIES WALK-BEHIND TROWELS • OPERATION MANUAL — REV. #1 (11/17/17)
V-Belt
1. Inspect the V-belt (Figure 54) to determine if it is frayed,
peeling, full of tiny cracks, has pieces of rubber missing,
or is otherwise damaged.
GLAZED
CRACKS
SIDEWALL
Figure 54. V-Belt Inspection
CORD FAILURE
WORN BACK
COVER
BROKEN
MISSING
RUBBER
MAINTENANCE
2. Inspect the V-belt (Figure 54) to determine if it is
oil-soaked or glazed (a hard, shiny appearance on the
sides of the belt). Either of these conditions can cause
overheating of the belt, which can weaken the belt and
increase the possibility of it breaking.
3. Replace the V-belt immediately if any of the above wear
conditions are observed.
Fuel Strainer
1. Thoroughly clean the area around the fuel tank cap.
2. Remove the fuel tank cap from the fuel tank.
3. Remove, inspect, and clean the fuel strainer (Figure 55)
with solvent.
FUEL TANK CAP
FUEL STRAINER
MUFFLER
PROTECTOR
EXHAUST
DEFLECTOR
MUFFLER
SPARK
ARRESTER
Figure 56. Spark Arrester Removal
Figure 55. Fuel Strainer
Spark Arrester
1. Remove the screws that secure the exhaust deflector
to the muffler protector, then remove the exhaust
deflector (Figure 56).
2. Remove the screws that secure the muffler protector
to the muffler, then remove the muffler protector
(Figure 56).
3. Remove the screw securing the spark arrester to the
muffler, then remove the spark arrester (Figure 56).
4. Carefully remove carbon deposits from the spark
arrester screen (Figure 57) with a wire brush.
WIRE BRUSH
SPARK ARRESTER
SCREEN
Figure 57. Cleaning the Spark Arrester
J36/B46-M30 SERIES WALK-BEHIND TROWELS • OPERATION MANUAL — REV. #1 (11/17/17) — PAGE 39
5. Replace the spark arrester if it is damaged (has breaks
or holes).
6. Reinstall the spark arrester, muffler protector, and
exhaust deflector in reverse order of disassembly.
MAINTENANCE
NOTICE
Refer to the manufacturer's engine manual supplied
with your trowel for more detailed information about
engine maintenance and troubleshooting.
TROWEL MAINTENANCE
Clean the trowel daily. Remove all dust and slurry
buildup. Make sure lubrication is performed after any
steam-cleaning.
Trowel Lubrication (Every 8 Hours)
Regular lubrication is required to maintain your trowel in
optimal working condition. Perform the following lubrication
procedure after every 8 hours of use.
1. Locate one of the Zerk grease fittings on the spider
assembly (Figure 58). Remove the Zerk fitting cap
and set it aside.
ZERK GREASE
FITTING
ZERK FITTING
CAP
3. Lubricate the Zerk grease fitting with 1 to 1½ shots
of multipurpose grade grease. DO NOT overgrease.
Replace the Zerk fitting cap when finished.
4. Repeat steps 1–3 for the remaining grease fittings on
the spider assembly.
Blade Pitch Adjustment
Perform maintenance adjustment of blade pitch using a
bolt on the trowel arm lever (Figure 59). This bolt is the
contact point of the trowel arm with the lower wear plate
on the thrust collar. The goal of adjustment is consistent
blade pitch and finishing quality.
BLADE PITCH
ADJUSTMENT
BOLT
TROWEL ARM
LEVER
TROWEL
ARM
SPIDER
PLATE
TROWEL
BLADE
Figure 58. Spider Lubrication
2. Wipe the Zerk grease fitting clean to prevent abrasive
material from entering the fitting during lubrication.
Figure 59. Blade Pitch Adjustment Bolt
Look for the following indications when determining if blade
pitch adjustment is necessary:
Are blades wearing out unevenly (i.e. one blade is
completely worn out while the others look new)?
Does the machine have a perceptible rolling or bouncing
motion while in use?
Does the guard ring rock up and down relative to the
ground while the machine is in use?
Once it has been determined that blade pitch adjustment
is required, do the following:
1. Place the trowel on a flat, level surface, with blocks
under the main guard ring for support. Any uneven
spots in the floor or debris under the trowel blades will
cause an incorrect perception of adjustment. Ideally,
a 5 ft. x 5 ft. (1.5 m x 1.5 m), 3/4-inch-thick, flat steel
plate should be used.
PAGE 40 — J36/B46-M30 SERIES WALK-BEHIND TROWELS • OPERATION MANUAL — REV. #1 (11/17/17)
MAINTENANCE
PITCH
2. Pitch the blades as flat as possible (Figure 60).
The pitch adjustment bolts should barely contact
(0.10 inch maximum clearance) the lower wear plate.
All adjustment bolts should be spaced the same
distance from the lower wear plate. If any one of the
bolts does not make contact, adjustment is necessary.
GEARBOX
STEEL TEST
SURFACE
PITCH
ADJUSTMENT
BOLT
Figure 60. Blades Pitched Flat (Correct)
TROWEL
ARM
LOWER
WEAR PLATE
MOUNTING
BAR
BLADE
3. Adjust the “high” bolts down to the level of the bolt
that is not touching, or adjust the “low” bolt up to the
level of the higher ones. Whenever possible, adjust the
“low” bolt up to the level of the rest of the bolts. This is
the fastest method, but it may not always work. After
adjustment, verify that the blades pitch correctly.
ADJUSTMENT
NO
BOLT
“DISHED” EFFECT ON
FINISHED CONCRETE
LOWER
WEAR PLATE
Figure 61. Blades Pitched Flat (Incorrect)
Spider Removal
Refer to Figure 62.
GEARBOX
GEARBOX
SHAFT
THRUST COLLAR
BEARING
YOKE
ARM
NOTICE
Incorrectly adjusted blades will often be unable to pitch
flat. This can occur if the adjustment bolts are raised
too high. Conversely, adjustment bolts that are too low
will prevent the blades from being pitched high enough
for finishing operations.
4. If the trowel still finishes poorly after blade pitch
adjustment has been performed, blades, trowel
arms, and trowel arm bushings may be suspect, and
should be inspected for improper adjustment, wear,
or damage.
Figure 61 illustrates incorrect spider plate alignment due
to improper adjustment, worn spider bushings, or bent
trowel arms.
THRUST COLLAR
WITH BUSHING
JAM NUT
CONE POINT
SQUARE HEAD
SET SCREW
SPIDER
WEAR RING
LOWER
WEAR PLATE
PLATE
Figure 62. Spider Removal
1. Locate and loosen the cone point square head set
screw and attached jam nut on the side of the spider
assembly.
2. Carefully lift the upper trowel/gearbox assembly off of
the spider assembly. A light tap with a rubber mallet
may be necessary to dislodge the spider from the main
shaft of the gearbox.
J36/B46-M30 SERIES WALK-BEHIND TROWELS • OPERATION MANUAL — REV. #1 (11/17/17) — PAGE 41
MAINTENANCE
FITTING
Blade Replacement
It is recommended to replace all of the trowel blades at the
same time. If only one or some of the blades are changed,
the machine may wobble or bounce and will not finish
concrete consistently.
NOTICE
Please note the orientation of each blade on the trowel
arm before removing.
1. Place the trowel on a flat, level surface, with blocks
under the main guard ring for support.
2. Remove the bolts and lock washers from each of the
trowel arms, then remove the blades as shown in
Figure 63.
TROWEL ARM
BLADE
ATTACHMENT
BAR
Trowel Arm Removal
Refer to Figure 64.
ROLL PIN
TROWEL
ARM
SPIDER PLATE
ZERK
CAP
Figure 64. Trowel Arm Removal
GREASE
1. Each trowel arm is held in place at the spider plate
by a Zerk grease fitting (hex head bolt) and a roll pin.
Remove the Zerk grease fitting and the roll pin from
the spider plate.
2. Remove the trowel arm from the spider plate.
3. Carefully remove the trowel arm bushing and set it
aside.
BUSHING
TROWEL
BLADE
Figure 63. Blade Removal
3. Wire brush and remove all concrete and debris from
all six sides of each of the four trowel arms. This is
important to properly seat the new blades.
4. Install the new blades, maintaining the proper blade
orientation as noted during removal. Secure with the
bolts and washers that were removed earlier.
4. Examine the trowel arm bushing, and clean it if
necessary. Replace the bushing if it is worn or
out-of-round.
PAGE 42 — J36/B46-M30 SERIES WALK-BEHIND TROWELS • OPERATION MANUAL — REV. #1 (11/17/17)
MAINTENANCE
TROWEL ARM
ROUND SHAFT
SECTION
ROLL PIN
HOLE
BLADE ATTACHMENT
BOLT HOLE
FLAT OF
HEXAGONAL SHAFT
(TOP OF ARM)
LEVER
MOUNTING
SLOT
TROWEL ARM
HEXAGONAL (HEX)
SHAFT SECTION
TROWEL ARM FLAT TEST
.004 IN./0.10 MM
ADJUSTMENT TOOL
LOCKING NUT
Trowel Arm Inspection
Trowel arms (Figure 65) can be damaged by rough handling
such as dropping the trowel, or by striking exposed
plumbing, rebar, or other objects while in operation. A
bent trowel arm will prevent smooth, fluid rotation of the
blades. If bent trowel arms are suspected, examine them
for straightness as shown below.
Figure 65. Trowel Arm
1. Place the trowel arm on a thick, steel plate, granite slab,
or any other surface which is true and flat (Figure 66).
4. Replace any bent or uneven trowel arms.
Trowel Arm Adjustment
The easiest and most consistent way to adjust a trowel arm
is with the trowel arm adjustment tool (P/N 1817).
Once locked into the adjustment tool, each trowel arm
bolt is adjusted until it contacts a stop on the fixture. This
will consistently adjust all of the trowel arms, keeping the
finisher as flat and evenly pitched as possible.
The trowel arm adjustment tool comes with usage
instructions and all the hardware necessary to correctly
perform this adjustment.
Perform the following procedure to adjust trowel arms using
the trowel arm adjustment tool.
1. Unscrew the locking bolts on the adjustment tool and
place a trowel arm (with lever attached) into the fixture
channel as shown in Figure 67.
TROWEL ARM
(PLACED IN
FIXTURE CHANNEL)
TROWEL
ARM
LEVER
FIXTURE
ARM
FIXTURE
ADJUSTMENT
BOLT
SURFACE
ROUND SECTION
FEELER GAUGE
.005 IN./0.127 MM
HEX SECTION
FEELER GAUGE
Figure 66. Trowel Arm Inspection
2. Check each of the six sides of the trowel arm hex
section (Figure 66). A feeler gauge of .004 inch
(0.10 mm) should not pass between the flat of the
trowel arm and the test surface along its length on the
test surface.
3. As the flat hex section rests on the test surface, use
a feeler gauge of .005 inch (0.127 mm) to check the
clearance between the round shaft section and the test
surface. Rotate the arm to each of the flat hex sections
and check the clearance between the round shaft and
the test surface. The clearance between the round shaft
and the test surface should be identical for each hex
section. See Figure 66.
SHIM
LOCKING
BOLTS
TROWEL ARM
DISTANCE = .010 in.
.010"
TROWEL ARM
ADJUSTMENT BOLT
TROWEL ARM
Figure 67. Trowel Arm Adjustment
2. Make sure the fixture arm is in the UP position
(Figure 68).
UP
DOWN
Figure 68. Fixture Arm Position (UP)
CORRECT
INCORRECT
J36/B46-M30 SERIES WALK-BEHIND TROWELS • OPERATION MANUAL — REV. #1 (11/17/17) — PAGE 43
MAINTENANCE
3. A thin shim may be required to cover the blade holes on
the trowel arm (Figure 67). Be sure to align the trowel
arm adjustment bolt with the fixture adjustment bolt.
4. Tighten the locking bolts (Figure 67) to secure the
trowel arm in place.
5. Adjust the bolt distance shown in Figure 67 to match
one of the arms. The other arms will be adjusted to
match this distance.
6. Loosen the locking nut on the trowel arm lever, then
turn the trowel arm adjusting bolt until it barely touches
(.010") the fixture adjustment bolt.
7. Once the correct adjustment is made, tighten the lock
nut on the trowel arm to lock it in place.
8. Loosen the locking nuts on the adjustment tool, and
remove the trowel arm.
9. Repeat steps 1–8 for the remaining trowel arms.
REASSEMBLY
1. Clean the wear plates and thrust collar, and examine
the entire spider assembly. Use a wire brush to remove
any concrete or rust buildup. Replace any spider
components that are damaged or out-of-round.
2. Inspect the bronze trowel arm bushing, and clean
it if necessary. If the bushing is damaged, worn, or
out-of-round, replace it.
3. Reinstall the trowel arm bushing onto the trowel arm.
4. Repeat steps 2–3 for each trowel arm.
5. Make sure the spring tensioner is in the correct position
to exert tension on the trowel arm.
10. Reinstall the lower wear plate, thrust collar, and wear
ring onto the spider shaft in the reverse order of
disassembly. Make sure there is little or no lateral
movement between the thrust collar and the spider
shaft.
11. Carefully lift the upper trowel/gearbox assembly, align
it with the keyway on the spider shaft, and insert it into
the spider assembly.
12. Reinstall the cone point square head set screw and jam
nut, and tighten securely. Make sure the point of the set
screw engages the groove in the gearbox main shaft.
13. Lubricate all grease points (Zerk fittings) with premium
Lithum 12-based grease, conforming to NLG1 grade #2
consistency.
LONG-TERM STORAGE
Perform the following procedure when storing the trowel
for more than 30 days.
Drain the fuel tank completely, or add STA-BIL® to the
fuel.
Run the engine until all gasoline in the carburetor is
completely consumed.
Completely drain the oil from the crankcase and refill
with fresh oil.
Remove the spark plug. Pour 5–10 cm³ of SAE 30 oil into
the cylinder. Turn the engine ON/OFF switch to the ON
position for a few seconds to distribute the oil. Return the
engine ON/OFF switch to the OFF position, and reinstall
the spark plug.
Clean off all external trowel components with a cloth.
6. Insert all trowel arms with levers (and bronze bushings
already installed) into the spider plate. Align the grease
holes on the bushings with the grease hole fittings on
the spider plate.
7. Lock the trowel arms in place by tightening the Zerk
grease fitting hex head bolts and jam nuts.
8. Reinstall the blades onto the trowel arms.
9. Install the stabilizer ring onto the spider assembly.
PAGE 44 — J36/B46-M30 SERIES WALK-BEHIND TROWELS • OPERATION MANUAL — REV. #1 (11/17/17)
Cover the trowel and store it away from direct sunlight
in a clean, dry location.
Symptom Possible Problem Solution
Diffi cult to start, fuel is available, but no spark at
spark plug.
Diffi cult to start, fuel is available, and spark is
present at the spark plug.
Diffi cult to start, fuel is available, spark is
present and compression is normal.
Diffi cult to start, fuel is available, spark is
present and compression is low.
No fuel present at carburetor.
TROUBLESHOOTING (ENGINE)
Troubleshooting (Engine)
Spark plug bridging? Check gap, insulation or replace spark plug.
Carbon deposit on spark plug? Clean or replace spark plug.
Short circuit due to defi cient spark plug
insulation?
Improper spark plug gap? Set to proper gap.
Spark plug is red? Check transistor ignition unit.
Spark plug is bluish white?
No spark present at tip of spark plug?
No oil? Add oil as required.
Oil pressure alarm lamp blinks upon starting? (if
applicable)
ON/OFF switch is shorted? Check switch wiring, replace switch.
Ignition coil defective? Replace ignition coil.
Improper spark gap, points dirty? Set correct spark gap and clean points.
Condenser insulation worn or short circuiting? Replace condenser.
Spark plug wire broken or short circuiting? Replace defective spark plug wiring.
Wrong fuel type?
Water or dust in fuel system? Flush fuel system.
Air cleaner dirty? Clean or replace air cleaner.
Choke open? Close choke.
Suction/exhaust valve stuck or protruded? Reseat valves.
Piston ring and/or cylinder worn? Replace piston rings and/or piston.
Cylinder head and/or spark plug not tightened
properly?
Head gasket and/or spark plug gasket damaged? Replace head and spark plug gaskets.
No fuel in fuel tank? Fill with correct type of fuel.
Fuel cock does not open properly?
Fuel fi lter/lines clogged? Replace fuel fi lter.
Fuel tank cap breather hole clogged? Clean or replace fuel tank cap.
Air in fuel line? Bleed fuel line.
Check spark plug insulation, replace if worn.
If insuffi cient compression, repair or replace
engine. If injected air leaking, correct leak. If
carburetor jets clogged, clean carburetor.
Check transistor ignition unit is broken, and
replace defective unit. Check if voltage cord
cracked or broken and replace. Check if spark
plug if fouled and replace.
Check automatic shutdown circuit, "oil sensor".
(if applicable)
Flush fuel system, replace with correct type of
fuel.
Torque cylinder head bolts and spark plug.
Apply lubricant to loosen fuel cock lever,
replace if necessary.
J36/B46-M30 SERIES WALK-BEHIND TROWELS • OPERATION MANUAL — REV. #1 (11/17/17) — PAGE 45
Symptom Possible Problem Solution
Weak in power, compression is proper and
does not misfi re.
Weak in power, compression is proper but
misfi res.
Engine overheats
Rotational speed fl uctuates.
Recoil starter malfunctions. (if applicable)
Starter malfunctions.
Burns too much fuel.
Exhaust color is continuously "white".
Exhaust color is continuously "black".
Will not start, no power with key "ON". (if
applicable)
TROUBLESHOOTING (ENGINE)
Troubleshooting (Engine) - continued
Air cleaner dirty? Clean or replace air cleaner.
Improper level in carburetor? Check fl oat adjustment, rebuild carburetor.
Defective spark plug? Clean or replace spark plug.
Improper spark plug? Set to proper gap.
Water in fuel system?
Dirty spark plug? Clean or replace spark plug.
Ignition coil defective? Replace ignition coil.
Wrong type of fuel? Replace with correct type of fuel.
Cooling fi ns dirty? Clean cooling fi ns.
Intake air restricted?
Oil level too low or too high? Adjust oil to proper level.
Governor adjusted incorrectly? Adjust governor.
Governor spring defective? Replace governor spring.
Fuel fl ow restricted? Check entire fuel system for leaks or clogs.
Recoil mechanism clogged with dust and dirt? Clean recoil assembly with soap and water.
Spiral spring loose? Replace spiral spring.
Loose, damaged wiring?
Battery insuffi ciently charged? Recharge or replace battery.
Starter damaged or internally shorted? Replace starter.
Over-accumulation of exhaust products?
Wrong spark plug?
Lubricating oil is wrong viscosity? Replace lubricating oil with correct viscosity.
Worn rings? Replace rings.
Air cleaner clogged? Clean or replace air cleaner.
Choke valve set to incorrect position? Adjust choke valve to correct position.
Carburetor defective, seal on carburetor
broken?
Poor carburetor adjustment, engine runs too
rich?
ON/OFF device not activated ON? Turn on ON/OFF device.
Battery disconnected or discharged?
Ignition switch/wiring defective? Replace ignition switch. Check wiring.
Flush fuel system and replace with correct
type of fuel.
Clear intake of dirt and debris. Replace air
cleaner elements as necessary.
Ensure tight, clean connections on battery
and starter.
Check and clean valves. Check muffl er and
replace if necessary.
Replace spark plug with manufacturer's
suggested type.
Replace carburetor or seal.
Adjust carburetor.
Check cable connections. Charge or replace
battery
PAGE 46 — J36/B46-M30 SERIES WALK-BEHIND TROWELS • OPERATION MANUAL — REV. #1 (11/17/17)
Symptom Possible Problem Solution
Engine running rough or not at all.
Trowel bounces, rolls concrete, or makes
uneven swirls in concrete.
TROUBLESHOOTING (TROWEL)
Troubleshooting (Walk-Behind Trowel)
Engine ON/OFF Switch in "OFF" position
or malfunctioning?
Centrifugal ON/OFF Switch in "OFF"
position or malfunctioning?
Fuel?
Ignition?
Loose wire connections Check wiring. Replace or repair as necessary.
Bad contacts in ON/OFF switch? Replace ON/OFF switch.
Blades?
Pitch adjustment?
Bent trowel arms?
Spider?
Thrust collar?
Thrust collar bushing?
Thrust bearing worn?
Make sure that the Engine ON/OFF Switch is ON
or replace switch if necessary.
Place centrifugal stop switch in "ON" position.
Check wiring. Replace switch if necessary.
Look at the fuel system. Make sure there is fuel
being supplied to the engine. Check to ensure that
the fuel fi lter is not clogged.
Check to ensure that the ignition switch has power
and is functioning correctly.
Make certain blades are in good condition, not
excessively worn. Finish blades should measure
no less than 2"" (50mm) from the blade bar to
the trailing edge, combo blades should measure
no less that 3.5"" (89mm). Trailing edge of blade
should be straight and parallel to the blade bar.
Check that all blades are set at the same
pitch angle as measured at the spider. A fi eld
adjustment tool is available for height adjustment
of the trowel arms. (Contact Parts Dept.)
Check the spider assembly for bent trowel arms.
If one of the arms is even slightly bent, replace it
immediately.
Check fi t of arms in spider. This can be done by
moving the trowel arms up and down. If there is
more than 1/8 inch (3.2 mm) of travel at the tip of
the arm, the spider and arms should be replaced.
Check the fl atness of the thrust collar by rotating
it on the spider. If it varies by more than 0.02 inch
(0.5 mm) replace the thrust collar.
Check the thrust collar by rocking it on the spider.
If it can tilt more than 3/32 inch (2.4 mm) - as
measured at the thrust collar O.D., replace the
thrust collar.
Check the thrust bearing to see that it is spinning
freely. Replace if necessary.
J36/B46-M30 SERIES WALK-BEHIND TROWELS • OPERATION MANUAL — REV. #1 (11/17/17) — PAGE 47
TROUBLESHOOTING (TROWEL)
assembly should be checked for straightness.
Troubleshooting (Walk-Behind Trowel) - continued
Symptom Possible Problem Solution
The main output shaft of the gearbox
Machine has a perceptible rolling motion
while running.
Clutch slipping or sluggish response to
engine speed change.
Trowel blades do not rotate.
Main shaft?
Yoke?
Blade Pitch?
Worn V-belts? Replace V-belt.
Hand clutch out of adjustment?
Worn or defective hand clutch parts? Replace parts as necessary.
Worn bearings in gearbox?
Worn or broken gears in gearbox?
Defective clutch? Replace clutch.
Broken V-belt? Replace V-belt.
Defective ON/OFF switch?
Defective centrifugal ON/OFF switch?
The main shaft must run straight and cannot
be more than 0.003"" (0.08 mm) out of round
at the spider attachment point.
Check to make sure that both fi ngers of the
yoke press evenly on the wear cap. Replace
yoke as necessary.
Check to ensure that each blade is adjusted
to have the same pitch as all other blades.
Adjust per maintenance section in manual.
Adjust per instructions in maintenance
section of this manual.
Rotate input shaft by hand. If shaft rotates
with diffi culty, check the input and output
shaft bearings. Replace as necessary.
Verify that the gearbox shaft rotates when
the input shaft is rotated. Replace both the
worm and worm gear as a set.
Check and replace ON/OFF switch if
necessary.
Check and replace centrifugal ON/OFF
switch if necessary.
PAGE 48 — J36/B46-M30 SERIES WALK-BEHIND TROWELS • OPERATION MANUAL — REV. #1 (11/17/17)
CENTRIFUGAL
INDICA
ARK
STOP SWITCH
WIRING DIAGRAM
ON
OFF
OIL LEVEL
SWITCH
OIL LEVEL
TOR
GRN
YEL
YEL
OIL ALERT
UNIT
BLK
BLK
BLK
ENGINE
SWITCH
CHASSIS
GND.
STOP
UNIT
TRANSISTORIZED
IGNITION UNIT
IGNITION
COIL
SP
PLUG
J36/B46-M30 SERIES WALK-BEHIND TROWELS • OPERATION MANUAL — REV. #1 (11/17/17) — PAGE 49
OPERATION MANUAL
HERE’S HOW TO GET HELP
© COPYRIGHT 2017, MULTIQUIP INC.
Multiquip Inc
are registered trademarks of Multiquip Inc. and may not be used, reproduced, or altered without written permission. All other
trademarks are the property of their respective owners and used with permission.
This manual
The information and specifi cations included in this publication were in effect at the time of approval for printing. Illustrations, descriptions, references and technical data contained in
this manual are for guidance only and may not be considered as binding. Multiquip Inc. reserves the right to discontinue or change specifi cations, design or the information published
in this publication at any time without notice and without incurring any obligations.
PLEASE HAVE THE MODEL AND SERIAL
NUMBER ON-HAND WHEN CALLING
UNITED STATES
Multiquip Corporate Office MQ Parts Department
18910 Wilmington Ave.
Carson, CA 90746
Contact: mq@multiquip.com
Service Department Warranty Department
800-421-1244
310-537-3700
Technical Assistance
800-478-1244 Fax: 310-943-2238
CANADA
Multiquip Multiquip (UK) Limited Head Office
4110 Industriel Boul.
Laval, Quebec, Canada H7L 6V3
Contact: infocanda@multiquip.com
Tel. (800) 421-1244
Fax (310) 537-3927
Tel: (450) 625-2244
Tel: (877) 963-4411
Fax: (450) 625-8664
800-427-1244
310-537-3700
800-421-1244
310-537-3700
UNITED KINGDOM
Unit 2, Northpoint Industrial Estate,
Globe Lane,
Dukinfield, Cheshire SK16 4UJ
Contact: sales@multiquip.co.uk
Fax: 800-672-7877
Fax: 310-943-2249
Tel: 0161 339 2223
Fax: 0161 339 3226
, the MQ logo and the Whiteman logo
MUST accompany the equipment at all times. This manual is considered a permanent part of the equipment and should remain with the unit if resold.
Your Local Dealer is:
PN: 13401
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