OPERATION AND PARTS MANUAL
SERIES
PLASTER/MORTAR MIXER
MODEL WM45H
(Honda GX160UT1HX2 Gasoline Engine)
MODEL WM45E
(1 HP Electric Motor)
Revision #1 (09/09/19)
To find the latest revision of this
publication, visit our website at:
www.multiquip.com
THIS MANUAL MUST ACCOMPANY THE EQUIPMENT AT ALL TIMES.
PROPOSITION 65 WARNING
PAGE 2 — WM45H/E PLASTER/MORTAR MIXER • OPERATION AND PARTS MANUAL — REV. #1 (09/09/19)
Grinding/cutting/drilling of masonry, concrete, metal and
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, metal and
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.
WARNING
SILICOSIS WARNING RESPIRATORY HAZARDS
SILICOSIS/RESPIRATORY WARNINGS
WM45H/E PLASTER MORTAR MIXER • OPERATION AND PARTS MANUAL — REV. #1 (09/09/19) — PAGE 3
TABLE OF CONTENTS
WM45H/WM45E
Plaster/Mortar Mixer
Proposition 65 Warning ........................................... 2
Silicosis/Respiratory Warnings ................................ 3
Table of Contents ..................................................... 4
Safety Information ............................................... 6–9
Specifications ........................................................ 10
Dimensions ............................................................ 11
General Information ............................................... 12
Components .......................................................... 13
Basic Engine .......................................................... 14
Electric Motor ........................................................ 15
Pre-Inspection (Engine/Mixer) ............................... 16
Initial Start-Up (Engine) ......................................... 17
Initial Start-Up (Engine/Electric Motor) .................. 18
Shutdown ............................................................... 19
Maintenance (Engine) ..................................... 20–21
Maintenance (Mixer) ........................................ 22–23
Troubleshooting (Engine) ....................................... 24
Troubleshooting (Engine/Mixer) ............................. 25
Wiring Diagram (Electric Motor) ............................ 26
Explanation of Code in Remarks Column.............. 28
Suggested Spare Parts ......................................... 29
Component Drawings
Nameplate and Decals Assembly .................... 30–31
Steel Tub Assembly ......................................... 32–33
Paddle Shaft Assembly .................................... 34–35
Frame Assembly .............................................. 36–37
Engine Cover Assembly .................................. 38–39
Engine/Guard Assembly .................................. 40–41
Electric Motor Assembly .................................. 42–43
NOTICE
Specifications and part numbers are subject to change
without notice.
PAGE 4 — WM45H/E PLASTER/MORTAR MIXER • OPERATION AND PARTS MANUAL — REV. #1 (09/09/19)
NOTES
WM45H/E PLASTER MORTAR MIXER • OPERATION AND PARTS MANUAL — REV. #1 (09/09/19) — PAGE 5
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 hazards associated with the operation of this
equipment will be referenced with hazard symbols which
may appear throughout this manual in conjunction with
safety messages.
associated with the operation of this
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.
SYMBOL
SAFETY HAZARD (CONTINUED)
CAUTION
Burn Hazard
HOT PARTS can burn skin.
DO NOT
amount of time to cool before performing maintenance.
NEVER operate this equipment with guards removed.
Keep hands clear.
touch hot parts. Allow machine a sufficient
WARNING
Guard Hazard
Warning decals
equipment are defi ned below:
DECAL
To avoid injury you must read and understand
operator’s manual before using this machine.
This machine to be operated by qualified personnel.
Ask for training as needed.
NEVER operate this equipment with guards removed.
Keep hands clear.
SAFETY HAZARD
WARNING
Read Manual
WARNING
WARNING
Guard Hazard
Training
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.
SAFETY HAZARD
WARNING
Lethal Exhaust Gas Hazard
inhale exhaust gases/fumes.DO NOT
WARNING
Explosive Fuel Hazard
WARNING
Moving blades can cut and crush. operate
equipment with hands inside drum.
ALWAYS
hearing and eye protection.
Stand clear of rotating blades.
Stand clear of drum handle when blades are
rotating.
ALWAYS keep hands clear of safety grate when
closing.
Rotating Parts Hazard
NEVER
WARNING
Fire Hazard
smoke around or near this equipment.DO NOT
WARNING
Inhalation Hazard
wear appropriate dust mask along with
WARNING
Entanglement Hazard
WARNING
Kickback Hazard
WARNING
Crush Hazard
PAGE 6 — WM45H/E PLASTER/MORTAR MIXER • OPERATION AND PARTS MANUAL — REV. #1 (09/09/19)
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.
ALWAYS check the equipment for loosened threads or
bolts before starting.
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.
WM45H/E PLASTER MORTAR MIXER • OPERATION AND PARTS MANUAL — REV. #1 (09/09/19) — PAGE 7
SAFETY INFORMATION
MIXER SAFETY
ENGINE SAFETY
Engine fuel exhaust gases contain poisonous carbon
monoxide. This gas is colorless and odorless, and can
The engine of this equipment requires an adequate
operate this equipment
place hands or fingers inside engine
operate the engine with heat shields or
while the engine is hot. Hot oil will gush out of the oil
tank and severely scald any persons in the general area
Make certain the operator knows how to and is capable
run engine without an air fi lter or with a dirty air
fi lter. Severe engine damage may occur. Service air fi lter
DANGER
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.
DO NOT mix fl ammable or explosive substances.
WARNING
NEVER place your hands inside the drum
while starting or operating this equipment.
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.
Before operating mixer, ensure that safety grate is in
position and correctly fi tted.
CAUTION
NEVER lubricate components or attempt service on a
running machine.
NOTICE
DANGER
cause death if inhaled.
free fl ow of cooling air. NEVER
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.
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
DANGEROUS
GAS FUMES
ALWAYS keep the machine in proper running condition.
ALWAYS ensure mixer is on level ground before mixing.
Fix damage to machine and replace any broken parts
immediately.
DO NOT tip mixer onto drum mouth when the drum is
rotating.
Ensure the drum is rotating while fi lling and emptying
the drum.
ALWAYS store equipment properly when it is not being
used. Equipment should be stored in a clean, dry location
out of the reach of children and unauthorized personnel.
of the mixer.
CAUTION
NEVER touch the hot exhaust manifold,
muffl er or cylinder. Allow these parts to cool
before servicing equipment.
of turning the engine OFF in case of an emergency.
NOTICE
NEVER
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.
PAGE 8 — WM45H/E PLASTER/MORTAR MIXER • OPERATION AND PARTS MANUAL — REV. #1 (09/09/19)
SAFETY INFORMATION
FUEL SAFETY
TRANSPORTING SAFETY
allow any person or animal to stand underneath
make sure forklift forks are inserted into pockets
Tighten fuel tank cap securely and close fuel cock to
tie down equipment during transport by
tip the engine to extreme angles during lifting as
it may cause oil to gravitate into the cylinder head, making
use food or plastic containers to dispose of
pour waste, oil or fuel directly onto the ground,
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
CAUTION
NEVER
the equipment while lifting.
NOTICE
ALWAYS
(if applicable) as far as possible when lifting the mixer.
ALWAYS shutdown engine before transporting.
NEVER lift the equipment while the engine is running.
prevent fuel from spilling.
DO NOT lift machine to unnecessary heights.
ALWAYS
securing the equipment with rope.
NEVER
the engine start diffi cult.
ENVIRONMENTAL SAFETY
NOTICE
Dispose of hazardous waste properly.
Examples of potentially hazardous waste
are used motor oil, fuel and fuel fi lters.
DO NOT
hazardous waste.
DO NOT
down a drain or into any water source.
Store fuel in appropriate containers, in well-ventilated
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.
WM45H/E PLASTER MORTAR MIXER • OPERATION AND PARTS MANUAL — REV. #1 (09/09/19) — PAGE 9
SPECIFICATIONS
Table 1. Mixer Specifications
Capacity 4.5 cu. ft (127 liters)
Bag Capacity 1-1/2 to 2-1/2 bags
Weight 380 lbs. (172 kg.)
Height W/Dump Handle 57.5 in. (146 cm.)
Discharge Height 7.5 in. (19 cm.)
Drive V-Belt/Gear
Dump Action Manual
Table 2. Engine/Electric Motor Specifications
Model Honda GX160UT1HX2
Type
Bore X Stroke
Engine
Dimensions (L x W x H)
Dry Net Weight
Displacement 9.9 cu. in. (163 cc) N/A
Max Output 4.8 H.P./3600 R.P.M. 1.0 HP @ 1725 RPM
Fuel Tank Capacity Approx. 0.95 U.S. Gallons (3.6 Liters) N/A
Fuel Unleaded Gasoline N/A
Lube Oil Capacity 0.63 qt. (0.6 liter) N/A
Speed Control Method Centrifugal Fly-weight Type N/A
Starting Method Recoil Start N/A
Air-cooled 4 stroke, Single Cylinder,
OHV, Horizontal Shaft Gasoline
Engine
2.70 in. X 1.80 in.
(68 mm x 45 mm)
12.3 x 14.3 x 13.6 in.
(312 x 362 x 346 mm)
40.8 lbs. (15 Kg.) 22 lbs. (10 Kg.)
BALDOR
35S772T980G1
1.0 HP 115/230 VAC
Single-Phase, 60 Hz
Electric Motor
N/A
13.25 x 8.93 x 8.56 in.
(336 x 227 x 217 mm)
PAGE 10 — WM45H/E PLASTER/MORTAR MIXER • OPERATION AND PARTS MANUAL — REV. #1 (09/09/19)
A
DIMENSIONS
B
C
D
Reference Designator Dimension in. (cm.)
Figure 1. Dimensions
WM45H/E PLASTER MORTAR MIXER • OPERATION AND PARTS MANUAL — REV. #1 (09/09/19) — PAGE 11
Table 3. Mixer Dimensions
A 57.5 (146)
B 74.0 (188)
C 32.5 (82)
D 29.0 (74)
GENERAL INFORMATION
GENERAL
The MQ Model WM45H and WM45E plaster and mortar
mixers are shipped completely assembled and each mixer
has been factory tested.
The drum batch capacity of these mixers is between 1.5 and
2.5 bags. With proper care it will give continuous service
year after year.
These mixers can be powered by either a Honda GX160
gasoline engine or a 1 HP electric motor (115/230 VAC, 60
Hz). The shaft of the engine or electric motor is connected
to a drive belt pulley which is attached to a main gear. As
the main gear rotates it causes the paddle shaft to rotate.
Before Starting
Before starting if using a gasoline model mixer, read the
engine owner's manual and thoroughly understand the
safety information.
Check the items listed below:
Oil Levels (Gasoline Model Only)
Gasoline Engine Care
For care and operation of the Honda engine, refer to the
maintenance procedures in this manual and the engine
manufacturer’s operating instructions furnished with the
engine. We recommend draining and refilling the engine
crankcase at least every thirty hours of operation. Check
the engine oil level daily.
ON/OFF Switch (Gasoline Model Only)
This feature is on gasoline engine mixers only. Located on
the side of the engine cover. The purpose of this switch is
to start and stop the mixer in normal operation.
ON/OFF Switch (Electric Model Only)
This feature is on electric motor mixers only. This switch is
located on top of the motor. Lift the engine cover to gain
access to this switch. The purpose of this switch is to start
and stop the mixer in normal operation. NEVER use the
electric motor in an explosive environment.
Be sure to check the oil levels in the engine and engine
reduction unit before starting the unit (gasoline model only).
Hardware
Check all hardware on the mixer before starting. Periodically
inspect all hardware. Loose hardware can contribute to
early component failure and poor performance. Use the
torque chart below as a general guideline and keep all
hardware tight:
HARDWARE DIA TORQUE (lb./ft.)
5/16"- 18 24
3/8" - 24 37
1/2" - 13 39
1/2" - 13 (Grade 8) 90
PAGE 12 — WM45H/E PLASTER/MORTAR MIXER • OPERATION AND PARTS MANUAL — REV. #1 (09/09/19)
COMPONENTS
Figure 2. Major Components
Figure 2 illustrates the basic components and controls of
the WM45H and WM45E mixer.
1. Lifting Handle Bars — Use these handle bars to lift
and maneuver the mixer.
2. Pivot Point/Zerk Fitting — There is, on each end of
the mixing drum a zerk grease fitting. These fittings
lubricate the dumping mechanism. Lubricate both
fittings at least twice a week.
3. Safety Grill — Provided for operator safety. This safety
grill is designed to keep hands and solid objects out of
the mixing drum when in use. This grill should be closed
at all times when mixer is in use. DO NOT remove the
grill or grill opening bar. Keep the grill clean by washing
it down daily.
4. Mixing Paddles — Used in the mixing of material.
This unit uses four different types of paddles to provide
a fast uniform mix.
5. Bag Cutter — This feature allows compound mixing
bags to be opened easily, therefore allowing the
contents of the bag to fall directly into the mixing drum.
6. Engine Cover — Lift this cover to gain access to the
engine compartment.
7. Lifting Handle Bars (Engine Side) — Use these
fold-down handle bars to lift and maneuver the mixer.
8. Engine ON/OFF Switch — Pull switch outward to start
engine. Push inward to stop engine. This feature is on
gasoline models only.
9. Tires — Replace tires with the recommended type
tire of 12 x 3.
10. Chock Blocks — Place these blocks (not included
as part of the mixer package) under each mixer wheel
to prevent rolling.
11. Steel Mixing Drum — Mixing materials such as mortar,
plaster are to be placed into this drum for mixing.
Always clean the drum after each use
12. Dump Handle — Pull this handle downward to dump
the contents of the drum. Push the handle upward to
return the drum to its vertical position.
WM45H/E PLASTER MORTAR MIXER • OPERATION AND PARTS MANUAL — REV. #1 (09/09/19) — PAGE 13
Figure 3. Engine Controls and Components
BASIC ENGINE
INITIAL SERVICING
The engine (Figure 3) must be checked for proper
lubrication and filled with fuel prior to operation. Refer to
the manufacturers engine manual for instructions and
details of operation and servicing. 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.
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.
2. Throttle Lever — Used to adjust engine RPM speed
(lever advanced forward SLOW, lever back toward
operator FAST).
3. Engine ON/OFF Switch — ON position permits engine
starting, OFF position stops engine operations.
6. Choke Lever — Used in the starting of a cold engine,
or in cold weather conditions. The choke enriches the
fuel mixture.
7. Air Cleaner — Prevents dirt and other debris from
entering the fuel system. Remove wing-nut on top of
air filter canister to gain access to filter element.
NOTICE
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
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.
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.
4. Recoil Starter (pull rope) — Manual-starting method.
Pull the starter grip until resistance is felt, then pull
briskly and smoothly.
5. Fuel Valve Lever — OPEN to let fuel flow, CLOSE to
stop the flow of fuel.
PAGE 14 — WM45H/E PLASTER/MORTAR MIXER • OPERATION AND PARTS MANUAL — REV. #1 (09/09/19)
10. Fuel Tank — Holds unleaded gasoline. For additional
information refer to engine owner's manual.
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