MULTIQUIP MC94SH Guide

OPERATION AND PARTS MANUAL
THIS MANUAL MUST ACCOMPANYTHE EQUIPMENT AT ALLTIMES.
MODEL
MC94SH/MC94PH
MC94SE/MC94PE
CONCRETE MIXER
(HONDA GX240 SERIES GASOLINE ENGINES
AND 1.5 HP ELECTRIC MOTOR)
Revision #12 (09/05/19)
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PAGE 2 — MC94S/P CONCRETE MIXER • OPERATION AND PARTS MANUAL — REV. #12 (09/05/19)
PROPOSITION 65 WARNING
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MC94S/P CONCRETE MIXER • OPERATION AND PARTS MANUAL — REV. #12 (09/05/19) — PAGE 3
Grinding/cutting/drillingofmasonry,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.Inaddition, 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
mentionedabove.
WARNING
Grinding/cutting/drillingofmasonry,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
hazardsfrom inhalationofdust, mistsandfumes cannot
be eliminated, the operator and any bystanders should
always wear a respirator approved by NIOSH/MSHAfor
thematerialsbeingused.
WARNING
SILICOSISWARNING RESPIRATORY HAZARDS
SILICOSIS/RESPIRATORY WARNINGS
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PAGE 4 — MC94S/P CONCRETE MIXER • OPERATION AND PARTS MANUAL — REV. #12 (09/05/19)
TABLE OF CONTENTS
MC94P/S Series
Concrete Mixers
Proposition 65 Warning ........................................... 2
Silicosis/Respiratory Warnings ................................ 3
Table of Contents..................................................... 4
Training Checklist .................................................... 6
Safety Information ............................................. 7–12
Mixer Specifications/Noise and Vibration .............. 13
Engine/Electric Motor Specifications ..................... 14
General Information............................................... 15
Basic Components (Mixer) .................................... 16
Engine Components.............................................. 17
Electric Motor Components ............................. 18–19
Towing Guidelines ................................................. 20
Safety Chain Connection....................................... 21
Inspection ........................................................ 22–23
Start-Up .......................................................... 24–25
Operation......................................................... 26–27
Maintenance (Engine) ..................................... 28–31
Maintenance (Mixer)........................................ 31–34
Troubleshooting (Mixer) ......................................... 35
Troubleshooting (Engine)................................. 36–37
Explanation of Code in Remarks Column.............. 38
Suggested Spare Parts ......................................... 39
Component Drawings
Nameplate and Decals Assembly.................... 40–41
Plastic Barrel Assembly................................... 42–43
Steel Barrel Assembly ..................................... 44–45
Main Frame Assembly..................................... 46–47
Axle Assembly ................................................. 48–49
Cabinet Assembly............................................ 50–51
Gas Engine Mounting Plate Assembly ............ 52–53
Electric Motor Mounting Plate Assembly......... 54–55
Engine Service Parts....................................... 56–57
NOTICE
Specifications and part numbers are subject to change
without notice.
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MC94S/P CONCRETE MIXER • OPERATION AND PARTS MANUAL — REV. #12 (09/05/19) — PAGE 5
NOTES
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PAGE 6 — MC94S/P CONCRETE MIXER • OPERATION AND PARTS MANUAL — REV. #12 (09/05/19)
TRAINING CHECKLIST
Training Checklist
No, Description OK? Date
1Read operation manual
completely.
2
Machine layout, location of
components, checking of engine
oil levels.
3 Fuel system, refueling procedure.
4Operation of controls (machine
not running).
5Safety controls, safety stop switch
operation.
6 Emergency stop procedures.
7 Machine transport and storage.
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MC94S/P CONCRETE MIXER • OPERATION AND PARTS MANUAL — REV. #12 (09/05/19) — 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 specifically address the level of exposure
to the operator and are preceded by one of four words:
DANGER, WARNING, CAUTION
or NOTICE.
SAFETY SYMBOLS
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.
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.
Lethal exhaust gas hazards
Explosive fuel hazards
Burn hazards
Rotating parts hazards
Symbol Safety Hazard
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PAGE 8 — MC94S/P CONCRETE MIXER • OPERATION AND PARTS MANUAL — REV. #12 (09/05/19)
SAFETY INFORMATION
GENERAL SAFETY
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-fitting 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
on medication.

NEVER operate this equipment under the
influence 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.
NOTICE

This equipment should only be operated by trained and
qualified personnel 18 years of age or older.

Whenever necessary, replace nameplate, operation and
safety decals when they become difficult to read.

Manufacturer does not assume responsibility for any
accident due to equipment modifications. Unauthorized
equipment modification will void all warranties.
NEVER
use accessories or attachments that are not
recommended by Multiquip for this equipment. Damage
to the equipment and/or injury to the user may result.
ALWAYS know the location of the nearest
fire extinguisher.
ALWAYS know the location of the nearest
first aid kit.
ALWAYS know the location of the nearest phone or
keep
a phone on the job site.
Also, know the phone numbers
of the nearest ambulance, doctor and
fire department.
This information will be invaluable in the case of an
emergency.
MIXER SAFETY
DANGER
NEVER operate the equipment in an
explosive atmosphere or near combustible
materials. An explosion or fire could result
causing severe bodily harm or even death.
DO NOT mix flammable or explosive substances.
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MC94S/P CONCRETE MIXER • OPERATION AND PARTS MANUAL — REV. #12 (09/05/19) — PAGE 9
SAFETY INFORMATION
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 the mixer, ensure that the safety grate
is in position and correctly fitted.
CAUTION

NEVER lubricate components or attempt service on a
running machine.
NOTICE

ALWAYS keep the machine in proper running condition.

ALWAYS ensure the mixer is on level ground before mixing.

Fix damage to the machine and replace any broken
parts immediately.

DO NOT tip the mixer onto the drum mouth when the
drum is rotating.

Ensure the drum is rotating while filling 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.

ALWAYS make sure the mixer is clean of dried materials.
DO NOT allow material to build up inside the drum. Keep
the drum, frame and wheels clean. Excess debris can
fall off on the highway and/or build up on the frame and
wheels, creating an unbalanced condition leading to
premature metal fatigue.
ENGINE SAFETY (GASOLINE MODELS ONLY)
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 flow of cooling air. NEVER
operate this equipment
in any enclosed or narrow
area where the free flow
of air is restricted. If the air
flow is restricted it will cause
injury to people and property
and serious damage to the
equipment or engine.
WARNING
DO NOT
place hands or fingers inside the engine
compartment when the engine is running.
NEVER
operate the engine with heat shields or
guards removed.
Keep fingers, hands, hair and clothing away
from all moving parts to prevent injury.
DO NOT remove the engine oil drain plug
while the engine is hot. Hot oil will gush out of the oil
tank and severely scald any persons in the general area
of the mixer.
CAUTION
NEVER touch the hot exhaust manifold,
muffler or cylinder. Allow these parts to cool
before servicing the equipment.

Make certain the operator knows how to and is capable
of turning the engine OFF in case of an emergency.
NOTICE
NEVER
run the engine without an air filter or with a dirty
air filter. Severe engine damage may occur. Service the
air filter 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.
DANGEROUS
GAS FUMES
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PAGE 10 — MC94S/P CONCRETE MIXER • OPERATION AND PARTS MANUAL — REV. #12 (09/05/19)
SAFETY INFORMATION
FUEL SAFETY (GASOLINE MODELS ONLY)
DANGER

DO NOT start the engine near spilled fuel or combustible
fluids. Fuel is extremely flammable and its vapors can
cause an explosion if ignited.

ALWAYS refuel in a well-ventilated area, away from
sparks and open flames.

ALWAYS use extreme caution when working with
flammable liquids.

DO NOT fill the fuel tank while the engine is running
or hot.

DO NOT overfill the tank, since spilled fuel can ignite if it
comes into contact with hot engine parts or sparks from
the ignition system.

Store fuel in appropriate containers, in well-ventilated
areas and away from sparks and flames.

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.
GENERATOR SAFETY
If using a generator to power the mixer, refer
to the applicable generator manual safety
information section.
ELECTRIC MOTOR SAFETY
(ELECTRIC MODELS ONLY)
NOTICE

Operate the electric motor only at the specified voltage
indicated on the nameplate.

DO NOT spray water onto the electric motor.

ALWAYS disconnect the AC power plug from the power
source before moving the mixer.

ALWAYS make sure the ON/OFF switch
on the electric motor is in the OFF position
when not in use and before inserting the
mixer’s power plug into an AC receptacle.
Power Cord/Cable Safety
DANGER
NEVER let power cords or cables lay in water.
NEVER use damaged or worn
cables or cords when
connecting the equipment to a generator. Inspect the
insulation for cuts.
NEVER grab or touch a live power
cord or cable with wet hands. The
possibility exists of electrical shock,
electrocution or death.

Make sure power cables are securely connected.
Incorrect connections may cause electrical shock and
damage to the mixer.
CAUTION

Ensure that cables and cords will not be tripped over or
trapped underneath the mixer.
NOTICE
ALWAYS
make certain that the proper power or
extension cord has been selected for the job.
TRANSPORTING SAFETY
CAUTION
NEVER
allow any person or animal to stand underneath
the equipment while lifting.
NOTICE
ALWAYS
make sure forklift forks are inserted as far as
possible into the pockets (if applicable) when lifting the mixer.
ALWAYS shut down the engine before transporting.
NEVER lift the equipment while the engine is running.

Tighten the fuel tank cap securely and close the fuel
cock to prevent fuel from spilling.
DO NOT lift the machine to unnecessary heights.
ALWAYS
tie down equipment during transport by
securing the equipment with rope.
NEVER
tip the engine to extreme angles during lifting
as this may cause oil to gravitate into the cylinder head,
making the engine difficult to start.
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MC94S/P CONCRETE MIXER • OPERATION AND PARTS MANUAL — REV. #12 (09/05/19) — PAGE 11
SAFETY INFORMATION
TOWING SAFETY
CAUTION

In addition to meeting Department of Transportation
(DOT) safety towing regulations,check your local
county or state safety towing regulations before towing
the mixer.

In order to reduce the possibility of an accident while
transporting the mixer on public roads, ALWAYS make
sure the towing vehicle is mechanically sound and in
good operating condition.

ALWAYS shut down the engine before transporting and
place the fuel valve in the OFF position.

ALWAYS inspect the hitch and coupling for wear. NEVER
tow a mixer with defective hitches, couplings, chains, etc.

Check the tire air pressure on both towing vehicle and
mixer. Mixer tires should be inflated to 50 psi cold.
Also check the tire tread wear on the vehicle and mixer.

ALWAYS make sure the mixer is equipped with a safety
chain.

ALWAYS properly attach the mixer’s safety chains to
the towing vehicle.

The maximum speed for highway towing is 55 MPH unless
posted otherwise.Recommended off-road towing is not to
exceed 15 MPH or less depending on type of terrain.

Avoid sudden stops and starts.These can cause skidding
or jackknifing. Smooth, gradual starts and stops will
improve towing.

Avoid sharp turns to prevent rolling.

The mixer should be adjusted to a level position at all
times when towing.

Raise and lock the mixer wheel stand in the UP position
when towing.

Place chock blocks underneath the mixer wheels to
prevent rolling while parked.
ENVIRONMENTAL SAFETY/DECOMMISSIONING
NOTICE
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),
follow the rules below.
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 a 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
the battery (if equipped) and bring it to an 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 mixer 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.
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PAGE 12 — MC94S/P CONCRETE MIXER • OPERATION AND PARTS MANUAL — REV. #12 (09/05/19)
SAFETY INFORMATION
EMISSIONS INFORMATION
NOTICE
The gasoline engine used in this equipment has been
designed to reduce harmful levels of carbon monoxide
(CO), hydrocarbons (HC) and nitrogen oxides (NOx)
contained in gasoline exhaust emissions.
This engine has been certified to meet US EPA evaporative
emissions requirements in the installed configuration.
Attempting to modify or make adjustments to the engine
emission system by unauthorized personnel without proper
training could damage the equipment or create an unsafe
condition.
Additionally, modifying the fuel system may adversely affect
evaporative emissions, resulting in fines or other penalties.
Emission Control Label
The emission control label is an integral part of the emission
system and is strictly controlled by regulation(s).
The label must remain with the engine for its entire life.
If a replacement emission label is needed, please contact
your authorized engine distributor.
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MC94S/P CONCRETE MIXER • OPERATION AND PARTS MANUAL — REV. #12 (09/05/19) — PAGE 13
MIXER SPECIFICATIONS/NOISE AND VIBRATION
Figure 1. Dimensions
NOTES:
1. Sound Pressure and Power Levels are “A” weighted Measures per ISO 226:2003 (ANSI S1.4-1981). 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 Square) Values of amplitudes on each axis, standardized to an 8 hour
exposure period, and obtained using operating condition of the machine that generates the most repeatable but highest values in accordance
with the applicable standards for the machine.
HEIGHT
WIDTH
LENGTH
Table 1. MC94SP Series Specifications/Dimensions
Height 63 in. (1,600 mm)
Width 51 in. (1,296 mm)
Length 103 in. (2,616 mm)
Maximum Mixing Capacity 9 cu. ft. (170 liters)
Bag Capacity 1 to 1.5 bag)
Weight - With Engine/
ElectricMotor 755 lbs. (342 Kg.)
Table 2. MC94SP Noise And Vibration (Gasoline Only)
Guaranteed ISO 11201:2010 Based
Sound Pressure Level at Operator Station in dB(A) TBD
Guaranteed ISO 3744:2010 Based
Sound Power Level in dB(A) TBD
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PAGE 14 — MC94S/P CONCRETE MIXER • OPERATION AND PARTS MANUAL — REV. #12 (09/05/19)
Table 3. Engine/Electric Motor Specifications
Model HONDA GX240K1QX2
GX240UT1QA2 Baldor 35LYL229
Type
Air-cooled 4 stroke, Single
Cylinder, OHV, Horizontal
Shaft Gasoline Engine
1.5 HP, 1Ø-120/240 VAC,
Electric Motor
Bore X Stroke 2.9 in. X 2.3 in.
(73 mm x 58 mm) N/A
Displacement 14.81 cu. in. (242 cc) N/A
Max Output 8.0H.P./3,600 rpm 1.5 HP/1725 R.P.M.
Fuel Tank Capacity 1.59 U.S. Gallons
(6.0 Liters) N/A
Fuel Unleaded Automobile
Gasoline N/A
Lube Oil Capacity 1.16 qt. (1.1 liter) N/A
Speed Control Method Centrifugal Fly-weight Type N/A
Starting Method Recoil Start Electric
Input Voltage N/A 120/240 VAC, 1Ø
Dimension
(L x W x H)
14.0 x 16.9 X 16.1 in.
(355 X 430 X 410 mm)
15.55 x 8.65 X 9.06 in.
(395 X 220 X 230 mm)
Dry Net Weight 55.1 lbs (25.0 Kg.) Approx. 12 lbs (5.4 kg.)
ENGINE/ELECTRIC MOTOR SPECIFICATIONS
Table 4. Mixing Hints
Applications Mix Ratios
Batch Quantities Approx. Batch
Output
Cement Bag
112 lb (50 Kg)
Sand Stone
Cu. Ft. Ltr Cu. Ft. Ltr Cu. Ft. Ltr
Most Ordinary 1:2:4 1/2 Bag 1¼ 35 2½ 71 3 85
Foundations 1:3:6 1/3 Bag 1¼ 35 2½ 71 2¾ 78
Rough Mass
Concrete 1:4:8 1/4 Bag 1¼ 35 2½ 71 2¾ 78
Watertight Floors,
Tanks, Pits, etc. 1:1½:3 2/3 Bag 1¼ 35 3 71 3 85
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MC94S/P CONCRETE MIXER • OPERATION AND PARTS MANUAL — REV. #12 (09/05/19) — PAGE 15
GENERAL INFORMATION
APPLICATION
This mixer is only intended for the production of concrete.
The mixer must be used for its intended purpose and is
not suitable for the mixing of flammable or explosive
substances. The mixer must not be used in an explosive
atmosphere. Use Table 4 (Mixing Hints) as a guide when
mixing concrete for various applications.
POWER PLANTS
The mixer can be powered by a Honda GX240 air-cooled,
4-stroke gasoline engine or a 1.5 HP electric motor. Refer
to Table 3 to for specific engine or electric motor data
information.
ELECTRICAL
If mixer is equipped with an electric motor, make sure
that the power being supplied to the motor corresponds to
the voltage rating label on the motor. Supplying the wrong
voltage to the electric motor will cause severe electrical
damage to the motor.
Always make sure the OFF/ON switch on the electric motor
is in the OFF position before applying power.
It is strongly recommended when inserting the mixer's
power cord into a receptacle, that a G.F.C.I. (Ground
Fault Current Interrupter) receptacle be used (120 VAC
applications).
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
Table 5 as general guideline when the torqueing of mixer
hardware is required. Remember to keep all mixer hardware
components tight.
Table 5. Hardware Torque Recommendations
Hardware Diameter Torque (ft-lbs)
5/16-inch x 18 14
3/8-inch x 16 24
3/8-inch x 24 37
1/2-inch x 13 39
1/2-inch x 13 (Grade 8) 90
ENGINE MAINTENANCE
For basic engine maintenance, refer to the engine
maintenance section in this manual. For more detailed
engine maintenance, refer to the Honda Engine Owner's
manual furnished with the engine.
OPTIONAL TOW BARS
This mixer can be configured for use with various types of
tow bars (ball, loop and pin). Reference Figure 2.
Contact Discount-equipment for the desired tow bar.
Figure 2. OptionalTow Bars
HBC-1
HLC-1
HPC-1
OPTIONAL TOWING BARS
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PAGE 16 — MC94S/P CONCRETE MIXER • OPERATION AND PARTS MANUAL — REV. #12 (09/05/19)
BASIC COMPONENTS (MIXER)
Figure 3. Mixer Major Components
1. Steel Mixing Drum — This mixer uses a 6 cu. ft steel
mixing drum. This drum is to be used for mixing of
concrete. Always clean the drum after each use. DO
NOT use this mixing drum for the mixing of volatile
liquids.
2. Dump Latch — To rotate the mixing drum, this latch
must be in the up position. To lock the drum, place the
latch in the down position.
3. Dump Gear Guard — NEVER operate the mixer
with this guard removed. Its purpose is to prevent dirt
and debris from entering the dump gear. In addition,
operator clothing could become entangled in the dump
gear, causing severe injury and bodily harm.
4. Handwheel — Turn this wheel clockwise or counter-
clockwise to rotate the mixing drum. Remember the
dump latch must be in the up position in order for the
mixing drum to be rotated.
12
3
4
5
6
7
8
9
10
11
12
13
14
5. Zerk Fittings — There are four grease zerk fittings
that require lubrication, three are on the yoke, and
the remaining fitting is located in the center of the
handwheel. Lubricate these fittings as referenced in
the maintenance section of this manual.
6. Safety Chain — This mixer uses a 3/16-inch thick,
72-inches long zinc-plated saftey chain. ALWAYS
connect the safety chain when towing.
7. Tow Bar — This mixer uses various towing bars, please
reference the frame assembly drawing and parts list
in this manual to determine which tow bar meets your
requirements.
8. Spring Suspension — This mixer uses a spring type
suspension. Check the mounting hardware for bolt hole
elongation and tightness. See maintenance section of
this manual for recommended maintenance.
9. Chock Blocks — Place these blocks (not included as
part of the mixer package) under each mixer wheel
to prevent rolling, when mixer is not connected to the
towing vehicle.
10. Tires Ply — The tire ply (layers) number is rated in
letters. This mixer uses 13-inch 2-ply tires. Replace
with only recommended type tires.
11. ON/OFF Switch (gasoline only) — This switch is
provided on mixer with gasoline engines only and is
located on the side of the mixer cabinet.When activated
it will shut down the engine. Pull out when starting the
engine.
12. Cabinet/Latch — Encloses engine and electric motor.
NEVER run mixer with cabinet removed. Use latches
to secure engine compartment cabinet.
13. Mixing Blades (Steel) — Used for the mixing of
concrete. When blades show signs of wear, entire
steel mixing drum assembly must be replaced. See
steel mixing drum assembly in the parts section of
this manual.
14. Forklift Pockets — When lifting of the mixer is required,
use these fork lift pockets to lift the mixer. Remember to
insert the forks of the forklift a minimum of 24 inches
into the lift pockets.
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MC94S/P CONCRETE MIXER • OPERATION AND PARTS MANUAL — REV. #12 (09/05/19) — PAGE 17
ENGINE COMPONENTS
Figure 4. Engine Components
INITIAL SERVICING
The engine (Figure 4) must be checked for proper
lubrication and filled with fuel prior to operation. Refer to the
manufacturer's engine manual for instructions and details
of operation and servicing.
1. Throttle Lever – Used to adjust engine RPM speed.
2. Fuel Filler Cap/Fuel Tank – Remove this cap to add
unleaded gasoline to the fuel tank. Fill with unleaded
gasoline. Refer to Table 3 for fuel tank capacity. Make
sure cap is tightened securely. DO NOT over fill. For
additional information, refer to Honda engine owner's
manual.
2
11
10
9
8
54
7
6
1
3
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 the
fuel residue has been completely wiped up
and the area surrounding the engine is dry.
3. Engine On/Off Switch – ON position permits engine
starting, OFF position stops engine operation.
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.
6. Oil Drain Plug – Remove this plug to remove oil from
the engine's crankcase.
7. Dipstick/Oil Filler Cap – Remove this cap to determine
if the engine oil is low. Add oil through this filler port as
recommended in Table 7.
8. Choke Lever – Used in the starting of a cold engine,
or in cold weather conditions. The choke enriches the
fuel mixture.
9. Spark Plug – Provides spark to the ignition system.
Set spark plug gap according to engine manufacturer's
instructions. Clean spark plug once a week.
10. Muffler – Used to reduce noise and emissions. NEVER
touch when hot!
11. 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.
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PAGE 18 — MC94S/P CONCRETE MIXER • OPERATION AND PARTS MANUAL — REV. #12 (09/05/19)
ELECTRIC MOTOR COMPONENTS
ELECTRIC MOTOR
For lubrication care and operation of the electric motor,
refer to your electric motor instruction booklet furnished
with the motor.
Protect the electric motor from dust as much as possible
and keep ventilating openings clean.
The electric motor used on this mixer is single-phase,
1/2 HP @120 VAC motor. Pay special attention to the
nameplate on the electric motor when supplying power to
the electric motor. Applying incorrect power to the motor
can severely damage the motor and may cause serious
bodily injury!
Always make certain that the correct voltage is being
supplied to the motor. The input voltage requirements can
be found on the electric motor's nameplate.
ELECTRIC MOTOR POWER CONNECTIONS
A 12-inch electrical cable (Figure 6) is provided with the
electrical motor for hookup to a power source.
The electric motor supplied with the mixer is configured from
the factory for 120 VAC grounded operation.
Motors can burn out when the line voltage falls 10% below the
voltage rating of the motor. Failure to use proper voltage will
cause the motor to overheat and actuate the overload switch.
If overload protection should actuate because of improper
voltage or any other malfunction, turn the main switch on the
motor to the "OFF" position and correct the problem, press
the reset switch button, and turn the main switch to the "ON"
position.
CAUTION
DO NOT spray water at any time on the electric motor.
DO NOT operate electric motor in an explosive
environment.
NOTICE
It is strongly recommended that all electrical wiring be
done by a licensed electrician. Pay special attention to
the nameplate on the electric motor. Make certain that
the voltage supplied to the electric motor matches the
required operating voltage printed on the nameplate.
ELECTRIC MOTOR VOLTAGE CHANGE SWITCH
1. ALWAYS make certain the electric motor's ON/OFF
switch is in the "OFF" position and the power cord has
been disconnected from the power source.
2. Remove the voltage change lock-out bolt and nut
(Figure 5). Change the position of the voltage change
toggle switch from 120 VAC to 240 VAC. The mixer is
factory wired for 120 VAC operation.
3. Re-install the voltage change lock-out bolt and nut.
Figure 5. Voltage Change Switch
4. Important!, when changing the input voltage to the
electric motor from 120 to 240 VAC, the plug on the
electric motor power cord must also be changed. See
Table 6 and Figure 6.
Table 6. Electric Motor Wiring Information
120-240 VAC -Single Phase
Motor HP
Rating
NEMA Plug
Connector
Mating NEMA
Connector
1.5 HP
(120 VAC)
L5-20P
P/N EM940537
L5-20R
P/N EM940538
1.5 HP
(240 VAC)
L6-20P
P/N 940539
L6-20R
P/N 940540
NOTICE
ALWAYS make certain the electric motor's ON/OFF
switch is working properly. When the mixer is not in
use, place the ON/OFF switch in the "OFF" position
and disconnect the power cord from the power source.
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MC94S/P CONCRETE MIXER • OPERATION AND PARTS MANUAL — REV. #12 (09/05/19) — PAGE 19
CAUTION
NEVER disable or disconnect the ON/OFF switch on
the electric motor. It is provided for operator safety.
Injury may result if it is disabled, disconnected or
improperly maintained.
ELECTRIC MOTOR COMPONENTS
Figure 6. Electric Motor
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