MULTIQUIP Essick Series Guide

OPERATION AND PARTS MANUAL
THIS MANUAL MUST ACCOMPANYTHE EQUIPMENT AT ALLTIMES.
SERIES
MODEL PRO12/
PRO12E51/PRO12E53
HYDRAULIC PLASTER/MORTAR MIXER
(HONDA GX390RT2-QNB2 GASOLINE ENGINE
TECO WESTINGHOUSE 5HP ELECTRIC MOTOR)
Revision #3 (09/25/14)
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PAGE 2 — PRO12 HYDRAULIC MIXER • OPERATION AND PARTS MANUAL — REV. #3 (09/25/14)
PROPOSITION 65 WARNING
Engine exhaust and some of
itsconstituents,andsomedustcreated
of California to cause cancer, birth
defects and other reproductive harm.
by power sanding, sawing, grinding,
drillingandotherconstructionactivities
contains chemicals known to the State
Someexamplesofthesechemicalsare:
Leadfromlead-basedpaints.
Crystallinesilicafrombricks.
Cementandothermasonryproducts.
Arsenicandchromiumfromchemically
treatedlumber.
Your risk from these exposures varies,
dependingonhowoftenyoudothistype
of work.To reduce your exposure to
these chemicals: work in aALWAYS
well ventilated area, and work with
approved safety equipment, suchas
dust masks that are specially designed
to filter out microscopic particles.
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PRO12 HYDRAULIC MIXER • OPERATION AND PARTS MANUAL — REV. #3 (09/25/14) — PAGE 3
SILICOSIS/RESPIRATORY WARNINGS
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,mists andfumescannot
be eliminated, the operator and any bystanders should
always wear a respirator approved by NIOSH/MSHAfor
thematerialsbeingused.
WARNING
SILICOSISWARNING RESPIRATORY HAZARDS
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PAGE 4 — PRO12 HYDRAULIC MIXER • OPERATION AND PARTS MANUAL — REV. #3 (09/25/14)
TABLE OF CONTENTS
PRO12 HYDRAULIC MIXER
Proposition 65 Warning ........................................... 2
Silicosis/Respiratory Warnings ................................ 3
Parts Ordering Procedures...................................... 5
Safety Information .............................................. 6-10
Specifications ........................................................ 12
Dimensions............................................................ 13
General Information............................................... 14
Mixer Components ........................................... 15-16
Hydraulic Components ..................................... 17-18
Basic Engine.......................................................... 19
Electric Motor Components ................................... 20
Paddle Blade Adjustment ...................................... 21
Inspection ......................................................... 22-23
Startup (Gasoline Engine) ................................ 24-25
Startup (Electric Motor) ......................................... 26
Operation............................................................... 27
Maintenance..................................................... 28-30
Troubleshooting (Engine).................................. 31-32
Troubleshooting ..................................................... 33
Hydraulic System Locator...................................... 34
Hydraulic System Diagram .................................... 35
Electric Motor (Single Phase) Wiring Diagram . 36-37
Explanation Of Code In Remarks Column............. 38
Suggested Spare Parts ......................................... 39
NOTICE
Specifications and part numbers are subject to change
without notice.
Component Drawings
Nameplate And Decals..................................... 40-41
Paddle Blades Assy. ......................................... 42-43
Drum Assy. ....................................................... 44-45
Hydraulic Assy. ................................................. 46-47
Frame Assy....................................................... 48-49
Cover Assy........................................................ 50-51
Engine Assy...................................................... 52-53
Electric Motor Assy. .......................................... 54-55
Fuel Tank Assy.................................................. 56-57
Terms And Conditions Of Sale — Parts ................ 58
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PAGE 6 — PRO12 HYDRAULIC MIXER • OPERATION AND PARTS MANUAL — REV. #3 (09/25/14)
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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PRO12 HYDRAULIC MIXER • OPERATION AND PARTS MANUAL — REV. #3 (09/25/14) — PAGE 7
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
under 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 and older.

Whenever necessary, replace nameplate, operation and
safety decals when they become difficult 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 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.
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PAGE 8 — PRO12 HYDRAULIC MIXER • OPERATION AND PARTS MANUAL — REV. #3 (09/25/14)
SAFETY INFORMATION
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.
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 fitted.
CAUTION

NEVER lubricate components or attempt service on a
running machine.
NOTICE

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 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 deploy stabilizer jack stands prior to use.
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 free flow of the
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 engine
compartment when 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 equipment.

Make certain the operator knows how to and is capable
of turning the engine OFF in case of an emergency.
NOTICE
NEVER
run engine without an air filter or with a dirty air
filter. Severe engine damage may occur. Service 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.
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PRO12 HYDRAULIC MIXER • OPERATION AND PARTS MANUAL — REV. #3 (09/25/14) — PAGE 9
SAFETY INFORMATION
FUEL SAFETY (GASOLINE MODELS ONLY)
DANGER

DO NOT add fuel to equipment if it is placed inside truck
bed with plastic liner. Possibility exists of explosion or
fire due to static electricity.

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 tank, since spilled fuel could 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.
FUEL
FUEL
GENERATOR SAFETY
If using a generator to power mixer, refer
to applicable generator manual safety
information section.
ELECTRIC MOTOR SAFETY (ELECTRIC MODELS
ONLY)
NOTICE

Operate electric motor only at the specified voltage
indicated on the nameplate.
DO NOT spray water onto electric motor.
ALWAYS
disconnect AC power plug from power source
before moving 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 equipment to generator. Inspect for cuts in
the insulation.
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 proper power or extension
cord has been selected for the job.
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PAGE 10 — PRO12 HYDRAULIC MIXER • OPERATION AND PARTS MANUAL — REV. #3 (09/25/14)
SAFETY INFORMATION
TRANSPORTING SAFETY
CAUTION

NEVER allow any person or animal to stand underneath
the equipment while lifting.
NOTICE

ALWAYS make sure forklift forks are inserted into pockets
(if applicable) as far as possible when lifting the mixer.

ALWAYS shutdown engine before transporting.

NEVER lift the equipment while the engine is running.

Tighten fuel tank cap securely and close fuel cock to
prevent fuel from spilling.

DO NOT lift 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
it may cause oil to gravitate into the cylinder head, making
the engine start difficult.
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),be
sure to follow 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 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 if equipped 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 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.
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
emmission 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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PRO12 HYDRAULIC MIXER • OPERATION AND PARTS MANUAL — REV. #3 (09/25/14) — PAGE 11
NOTES
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PAGE 12 — PRO12 HYDRAULIC MIXER • OPERATION AND PARTS MANUAL — REV. #3 (09/25/14)
SPECIFICATIONS
Table 1. Mixer Specifications
Capacity 12.0 cu. ft (340 liters)
Bag Capacity 3 to 4 bags
Operating Weight 1580 lbs. (716.68 kg.)
Maximum Aggregate Size 1 in. (25.4 mm)
Adjustable Drum Discharge Height Up to 42.5 in. (1079.5 mm.)
Drive System Hydraulic
Dump Action Hydraulic
Table 2. Engine Specifications
Model Honda GX390RT2-QNB2
Type Air-cooled 4 stroke, Horizontal Shaft, Gasoline Engine
Bore X Stroke 3.46 in. X 2.51 in.
(88 mm x 64 mm)
Displacement 23.7 cu. in. (389 cc)
Max Output 11.7 H.P./3600 R.P.M.
Continuous Output 9.0H.P./3600 R.P.M.
Fuel Tank Capacity Approx. 5.0 U.S. Gallons (18.9 Liters)
Fuel Unleaded Gasoline
Lube Oil Capacity 1.16 qt. (1.1 liter)
Speed Control Method Centrifugal Fly-weight Type
Starting Method Electric Start
Table 3. Electric Motor Specifications
Model Teco Westinghouse Model 3415 Teco Westinghouse Model 3481
Enclosure TEFC TEFC
Horsepower 5 5
Input Voltage (VAC) 230 230/460
Phase 1 3
Frequency (Hz) 60 60
Max Output@RPM 5 HP@1745 5 HP@1725
Full Load Amps 30 12.24/6.12
Weight 103 lbs (46.7 kg) 103 lbs (46.7 kg)
Dimensions (LxWxH) 18.03 x 8.8 x 10.5 in
(458 x 223.5 x 266.7 mm)
15.79 x 8.8 x 10.5 in
(401 x 223.5 x 266.7 mm)
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PRO12 HYDRAULIC MIXER • OPERATION AND PARTS MANUAL — REV. #3 (09/25/14) — PAGE 13
DIMENSIONS
Table 4. Mixer Dimensions
Reference Designator Dimension in. (mm.)
A (Length) 73.5 (1917.7)
B (Width) 35.0 (889)
C (Height) 45.0 (1143)
Figure 1. Mixer Dimensions
A B
C
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PAGE 14 — PRO12 HYDRAULIC MIXER • OPERATION AND PARTS MANUAL — REV. #3 (09/25/14)
GENERAL INFORMATION
APPLICATION
The Multiquip PRO12 hydraulic mixer (with drum capacity
of 12.0 cu. ft./340 liters) is shipped completely assembled,
factory-tested, and ready for use.
This mixer is only intended for the mixing of plaster and
mortar. The mixer must be used for its intended purpose
and is not suitable for mixing flammable or explosive
substances. The mixer must not be used in an explosive
atmosphere.This mixer has a batch capacity between 3-1/2
and 4-1/2 bags.
POWER PLANTS
This hydraulic mixer is powered by either a 11.7 HP Honda
GX390RT2-QNB2 air-cooled, 4-stroke, gasoline engine
(Reference Table 2), or a 5 HP electric motor. Reference
Table 3 for more detailed information regarding the electric
motor.
HARDWARE
Check all hardware on the mixer before starting. Periodically
inspect all hardware. Loose hardware can contribute to
early component failure and poor performance. Keep all
mixer hardware components tight.
ENGINE MAINTENANCE
For basic engine maintenance, refer to the engine
maintenance section in this manual. For a more detailed
engine maintenance, refer to the Honda Engine Owner's
manual furnished with the engine.
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. Reference Table 3 for electric motor
specifications.
Always make sure the OFF/ON switch on the electric motor
is in the OFF position before applying power.
EXTENSION CABLES
The extension cable should be a 3-wire configuration that
includes a ground wire that conforms to UL code. The wire
cross section must be a minimum of 2.5 mm2. Choose an
extension cord of adequate current carrying capacity as
referenced in Table 7. Remember cable distance affects
the current-voltage capacity of the extension cable.
Ensure that the extension cable is carefully laid out avoiding
wet areas, sharp edges and locations where vehicles
might run over it. Avoid allowing the extension cable to be
trapped underneath the mixer.
Unroll the extension cable fully or it will overheat and could
catch fire. Make sure that all extension cable connections
are dry and safe. Replace any defective or badly worn
extension cable immediately.
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PRO12 HYDRAULIC MIXER • OPERATION AND PARTS MANUAL — REV. #3 (09/25/14) — PAGE 15
MIXER COMPONENTS
Figure 2. Mixer Components
1
2
12
3
4
4
8
5
6
9
13 15
15
10
11
14
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PAGE 16 — PRO12 HYDRAULIC MIXER • OPERATION AND PARTS MANUAL — REV. #3 (09/25/14)
1. Engine Cover — Lift this cover to gain access to the
engine or electric motor.
2. Start/Stop Switch — This switch is located on the side
of the engine cover. When activated it will shut down
the engine (gasoline only).
3. Latch — Use this latch to secure the engine
compartment enclosure.
4. Drum Bearing — There is a pillow block bearing on
each end of the mixing drum. Bearings require daily
greasing with lithium-based EP grease.
5. Mixing Paddles — This mixer uses plastic and rubber
mixing paddles for the mixing of plaster and mortar.
Always clean paddles after each use.
6. Bag Cutter — This feature allows mixing bags to be
opened easily, therefore allowing the contents of the
bag to fall directly into the mixing drum.
7. 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.
8. Pivot Point/Zerk Fitting — There is a zerk grease
fitting on each end of the mixing drum. These fittings
lubricate the dumping mechanism. Lubricate both
fittings at least twice a week.
9. Mixing Drum — Drum capacity is 12 cu. ft (340 liters).
Mixing materials such as mortar and plaster are to be
placed into this drum for mixing. Always clean drum
after each use.
10. Swivel Jack Stands — These jack stands swivel out
to support the mixer.
11. 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.
12. Adjustable Stabilizer Jack Stands — Use these jack
stands to adjust the mixer to the desired height.
13. Hydraulic Oil Filter — 10 micron hydraulic filter. Filters
out small particles that are harmful to the hydraulic
system.
14. Charcoal Canister — A container filled with activated
charcoal that traps gasoline vapors emitted by the
fuel system.A container filled with activated charcoal
that traps gasoline vapors emitted by the fuel system
(gasoline only).
15. Shaft Seals — There is a zerk grease fitting at each
end of the mixing drum.These grease fittings lubricate
the paddle shaft seals. Fittings require daily greasing
with lithium-based EP grease.
MIXER COMPONENTS
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PRO12 HYDRAULIC MIXER • OPERATION AND PARTS MANUAL — REV. #3 (09/25/14) — PAGE 17
HYDRAULIC COMPONENTS
1
8
7
2
3
5
4
2
6
Figure 3. Hydraulic Components
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PAGE 18 — PRO12 HYDRAULIC MIXER • OPERATION AND PARTS MANUAL — REV. #3 (09/25/14)
1. Hydraulic Motor — Bi-directional hydraulic motor that
is used in conjunction with the directional control valve
to operate the hydraulic dump cylinder and paddle
shaft.
2. Hydraulic Dump Cylinder — When activated, this
cylinder will cause the mixing drum to rotate to the
dump position.This cylinder is provided on mixers with
hydraulic dump capability.
3. Hydraulic Oil Sight Gauge — This gauge indicates
the level and temperature of the hydraulic oil. For
normal operation, oil level should be visible at the
midpoint on the sightglass.
4. Hydraulic Valve — Directional hydraulic control valve.
Controls the direction of hydraulic fluid supplied to the
dump cylinder and paddle shaft.
5. Hydraulic Dump Lever — This lever is only provided
on mixers with hydraulic dump capability. Pull lever
outward to activate dump cylinder.
6. Hydraulic Paddle Blade Lever — 3-position lever.
Push inward for clockwise mixing rotation of blades.
Place in center position for no rotation (neutral/off).
7. Pump — Supplies hydraulic fluid to the hydraulic
control valve.
8. Hydraulic Oil Filter — 10 micron hydraulic filter. Filters
out small particles that are harmful to the hydraulic
system.
HYDRAULIC COMPONENTS
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PRO12 HYDRAULIC MIXER • OPERATION AND PARTS MANUAL — REV. #3 (09/25/14) — PAGE 19
BASIC ENGINE
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
engine manufacturer’s manual for instructions and details
of operation and servicing.
1. Fuel Filler Cap — Remove this cap to add unleaded
gasoline to the fuel tank. Make sure cap is tightened
securely. DO NOT over fill.
1
2
3
4
5
6
7
8
9
10
DANGER
Adding fuel to the tank should be done
only when the engine is stopped and has
had an opportunity to cool down. In the
event of a fuel spill, DO NOT attempt to
start the engine until the fuel residue has
been completely wiped up, and the area surrounding
the engine is dry.
2. Throttle Lever — Used to adjust engine RPM speed
(lever advanced forward SLOW, lever back toward
operator FAST).
3. Engine ON/OFF Switch — ON position permits engine
starting, OFF position stops engine operations.
4. Recoil Starter (pull rope) — Manual-starting method.
Pull the starter grip until resistance is felt, then pull
briskly and smoothly.
5. Fuel Valve Lever — OPEN to let fuel flow, CLOSE to
stop the flow of fuel.
6. Choke Lever — Used in the starting of a cold engine,
or in cold weather conditions. The choke enriches the
fuel mixture.
7. Air Cleaner — Prevents dirt and other debris from
entering the fuel system. Remove wing-nut on top of
air filter cannister to gain access to filter element.
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.
10. Fuel Tank — Holds unleaded gasoline. For additional
information refer to engine owner's manual.
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.
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PAGE 20 — PRO12 HYDRAULIC MIXER • OPERATION AND PARTS MANUAL — REV. #3 (09/25/14)
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 motors (Figure 5) used on these mixers is
available in two types of configurations, 5 HP 1Ø @230
VAC or 5 HP 3Ø @230/460 VAC. 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.
Figure 5. Electric Motor
CAUTION
DO NOT spray water at any time on the electric motor.
DO NOT operate electric motor in an explosive
environment.
1
AB
A
B
GND.
POINT
WHITE (L2)
BLACK (L1)
GREEN
BLUE
ORANGE
RED
T1
T2
T3
L1
L3
L2
NEMA L6-30P PLUG
1Ø
2-POLE CIRCUIT
BREAKER
ON/OFF
SWITCH
1Ø OR 3Ø
ELECTRIC MOTOR
YELLOW
BLACK
WHITE
BLACK
WHITE
GREEN
BLACK
WHITE
NEMA L14-30P PLUG
3Ø
ELECTRIC MOTOR POWER CONNECTIONS
The electrical motors used on these mixers are equipped
with either a 3-prong (1Ø) or a 4-prong (3Ø) plug.
Reference Figure 5 for connection to a power source.
Reference Table 5. to determine the required NEMA mating
receptacle.
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.
Table 5. Electric Motor Wiring Information
Electric Motor
Horsepower
Rating
230 VAC - 1Ø 230/460 VAC - 3Ø
5 HP
NEMA Plug
Connector
3-Prong
L6-30P
NEMA Plug
Connector
4-Prong
L14-30P
NEMA Receptacle
Connector
3-Prong
L6-30R
NEMA Receptacle
Connector
4-Prong
L14-30R
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