Milwaukee 4555-22 User Manual
OPERATOR’S MANUAL
MANUAL D’UTILISATEUR
MANUAL DEL OPERADOR
Cat No.
No de Cat.
N° de Cat.
4555-22
GASOLINE POWERED PRESSURE WASHER
NETTOYEUR HAUTE PRESSION À L’ESSENCE
LAVADORA A PRESIÓN CON MOTOR
TO REDUCE THE RISK OF DEATH OR SERIOUS INJURY, USER MUST READ OPERATOR’S MANUAL.
AFIN DE RÉDUIRE LE RISQUE DE BLESSURES, L'UTILISATEUR DOIT LIRE LE MANUEL DE L'UTILISATEUR.
PARA REDUCIR EL RIESGO DE LESIONES, EL USUARIO DEBE LEER EL MANUAL DEL OPERADOR.
GENERAL SAFETY RULES
DANGER
READ ALL INSTRUCTIONS
Read the operator’s manual carefully. Learn the
machine’s applications and limitations as well as the
specific potential hazards related to this machine.
SAVE THESE INSTRUCTIONS
GASOLINE SAFETY
Gasoline is highly flammable and must be handled
with care. To reduce the risk of burn injury, fire, or
explosion, observe the following:
1. ALWAYS REFUEL OUTDOORS AWAY FROM
SPARKS, FIRE, OR OTHER IGNITION SOURCES.
Never refuel indoors or in a poorly ventilated area.
Do not smoke while handling fuel.
2. NEVER REMOVE THE CAP OF THE FUEL TANK OR
ADD FUEL WHILE THE ENGINE IS RUNNING OR
WHEN THE ENGINE IS HOT.
3. LOOSEN FUEL CAP SLOWLY to release pressure and
to keep fuel from escaping around the cap. Replace
fuel tank and fuel container caps securely.
4. ENSURE THE FUEL LEVEL IS A MINIMUM 1/2 INCH
BELOW THE TOP OF THE TANK. During operation,
the engine heat may warm the fuel, causing expan
sion. If the tank is too full, expanding fuel can leak
from the tank.
5. USE CARE WHEN FILLING TO AVOID SPILLAGE. If
fuel is spilled, wipe spilled fuel from the unit. Never
attempt to burn off spilled fuel under any circumstances. Do not attempt to start the engine until fuel
vapors have dissipated. Move the machine at least
30 feet away from the spill area and avoid creating
any ignition source.
6. STORE FUEL IN AN APPROVED CONTAINER IN A
COOL, WELL-VENTILATED AREA, safely away from
spark and/or flame-producing equipment.
PERSONAL SAFETY
Gasoline operated machines can cause death or
serious injury through exposure to dangerous fumes,
loss of control, or contact with hot surfaces or moving
parts. To reduce the risk of injury, observe the following:
7. DO NOT OPERATE THE ENGINE IN A CONFINED
SPACE where dangerous carbon monoxide fumes
can collect. Carbon monoxide, a colorless, odorless, and extremely dangerous gas, can cause
unconsciousness, serious injury, or death.
8. ALWAYS WEAR SAFETY GLASSES WITH SIDE
SHIELDS. Everyday eyeglasses have only impactresistant lenses; they are NOT safety glasses. All
visitors should wear safety glasses and be kept a
safe distance from work area.
9. KEEP AWAY FROM HOT PARTS. The muffler and
-
other engine parts become very hot, use caution.
10. BE CAREFUL TO AVOID SLIPPING OR FALLING.
DON’T OVERREACH OR STAND ON UNSTABLE
SUPPORT. Keep proper footing and balance at all
times. Do not operate the equipment while barefoot or
when wearing sandals or similar lightweight footwear.
Wear protective footwear that will protect your feet
and improve your footing on slippery surfaces.
11. NEVER STAND ON MACHINE. You can loose your
balance or tip the machine, resulting in serious injury
due to slip or fall.
12. STAY ALERT AND BE CAREFUL. DO NOT OPERATE
THE PRODUCT WHILE UNDER THE INFLUENCE OF
DRUGS, ALCOHOL, OR ANY MEDICATION. Watch
what you are doing and use common sense. Do not
operate machine when you are tired. Do not rush.
13. KEEP GUARDS AND COVERS IN PLACE and in work
ing order at all times. Never operate the machine with
any guard or cover removed.
-
page 2
GENERAL SAFETY RULES
MACHINE USE AND CARE
Gasoline operated machines are powerful and can
cause serious injury if not used in accordance with
the manufacturer’s instructions. To reduce the risk
of injury:
14. BE THOROUGHLY FAMILIAR WITH CONTROLS.
Know how to stop the machine and relieve system
pressure quickly.
15. KEEP THE AREA OF OPERATION CLEAR OF ALL
PERSONS. Small children and pets should be kept
a safe distance from work area.
16. AVOID DANGEROUS ENVIRONMENTS. NEVER USE
IN AN EXPLOSIVE ATMOSPHERE. Normal sparking
of the motor could ignite fumes. Keep work area well
lit.
17. USE ONLY RECOMMENDED ACCESSORIES. The
use of improper accessories may cause risk of
injury.
18. CHECK FOR DAMAGED PARTS. Before using the
machine, a guard, or other part that is damaged
should be carefully checked to determine that it will
operate properly and perform its intended function.
Check for alignment of moving parts, binding of mov
ing parts, breakage of parts, mounting, and any other
conditions that may affect its operation. A guard or
other part that is damaged must be properly repaired
or replaced by an authorized service center to avoid
risk of personal injury.
19. NEVER STORE THE MACHINE INDOORS WITH FUEL
IN THE FUEL TANK. If the fuel tank has to be drained,
do this outdoors. Empty fuel tank and restrain the unit
from moving before transporting in a vehicle.
GASOLINE ENGINE SAFETY
Gasoline engines produce sparks and heat that are
capable of igniting combustible vapors or materials
and causing burn injuries, fire, or explosion. To reduce
the risk of injury, observe the following:
20. KEEP THE ENGINE AWAY FROM FLAMMABLES
AND OTHER COMBUSTIBLE MATERIALS. Keep
the engine free of grass, leaves, or grease to
reduce the chance of a fire hazard. Do not
operate around dry brush, twigs, cloth rags, or
other flammable materials. Make sure minimum
clearance of 3 feet is maintained from combustible
materials.
21. NEVER ATTEMPT TO MAKE ANY ADJUSTMENTS
WHILE THE ENGINE IS RUNNING (except where
specifically recommended by the manufacturer).
Never pick up or carry a machine while the engine is
running.
22. KEEP THE AIR INTAKE AND EXHAUST MUFFLER
FREE OF OBSTRUCTIONS AND FOREIGN OBJECTS.
Keep all sides of the machine at least 3 feet away from
buildings and obstructions.
23. ALWAYS OPERATE THE MACHINE on a level surface.
If the engine is at an incline, it could seize due to
improper lubrication (even at the maximum oil
level).
24. DO NOT TOUCH THE SPARK PLUG AND IGNITION
CABLE when starting and operating the engine.
25. CHECK FUEL HOSES AND JOINTS for looseness
and fuel leakage before each use.
MAINTENANCE/SERVICE
26. KEEP MACHINE DRY, CLEAN, AND FREE FROM
OIL AND GREASE. Always use a clean cloth when
cleaning. Never use brake fluids, gasoline, petroleum-
-
based products, or any solvents to clean machine.
27. BEFORE CLEANING, REPAIRING, OR INSPECTING,
shut off the engine, make certain all moving parts have
stopped and relieve system pressure. Disconnect the
spark plug wire, and keep the wire away from the plug
to prevent accidental starting.
28. CHECK BOLTS AND NUTS for looseness before
each use. A loose bolt or nut may cause serious
problems.
29. WHEN SERVICING USE ONLY IDENTICAL MILWAU
KEE REPLACEMENT PARTS. Use of any other parts
may create a hazard or cause product damage.
30. MAINTAIN LABELS AND NAMEPLATES. These
carry important information. If unreadable or missing,
contact a MILWAUKEE service facility for a free
replacement.
31. SAVE THESE INSTRUCTIONS. Refer to them
frequently and use them to instruct other users. If
you loan someone this machine, loan them these
instructions also.
-
page 3
SPECIFIC SAFETY RULES - PRESSURE WASHERS
Pressure washers produce high fluid pressures that can amputate body parts and penetrate flesh (injection
injury). They can also cause severe property damage if not properly used. To reduce the risk of injury, observe
the following:
1. HIGH PRESSURE JETS CAN CAUSE AMPUTATIONS AND SERIOUS INJECTION INJURIES. Injection injuries are
not simple cuts and should be treated by a physician immediately. Never direct a water stream towards people or
pets or place any body part in the stream. Leaking hoses and fittings are also capable of causing injection injury.
Do not hold hoses or fittings.
2. WARNING! Risk of Injection or severe injury - keep clear of nozzle – do not direct discharge stream at persons
– this product is to be used only by trained operators.
3. NEVER DIRECT A WATER STREAM TOWARDS any electrical devices. Contact with electricity can result in fatal
electric shock and damage the equipment.
4. USE ONLY HIGH PRESSURE ACCESSORIES RATED FOR PRESSURE HIGHER THAN THE MACHINE’S
MAXIMUM PSI RATING. Others may leak or burst.
5. RELIEVE SYSTEM PRESSURE BEFORE CHANGING ACCESSORIES, STORAGE, PERFORMING MAINTENANCE,
OR SERVICING THE MACHINE.
6. MAKE SURE THE NOZZLE USED IN THE SPRAY WAND AND THE HOSE CONNECTIONS ARE SECURE BEFORE
OPERATING THE MACHINE. A non-secured accessory could become a projectile when pressure is applied.
7. DO NOT USE ACIDS, ALKALINES, BLEACHES, SOLVENTS, FLAMMABLE MATERIALS, OR CORROSIVE
INDUSTRIAL GRADE SOLUTIONS in this product. These products can cause physical injuries to the operator
and irreversible damage to the machine.
8. CHECK THE WORK AREA BEFORE EACH USE. Remove all objects such as rocks, broken glass, nails, toys, wire,
or string which can be thrown or become entangled in the machine. Before starting any cleaning operation, close
doors and windows.
9. USE COLD WATER ONLY. Hot water can cause damage to the machine.
10. WARNING! Some dust created by power washing, and other construction activities contains chemicals known to
cause cancer, birth defects, or other reproductive harm. Some examples of these chemicals are:
• lead from lead-based paint
• crystalline silica from bricks and cement, sandblasting, and other masonry products, and
• arsenic and chromium from chemically-treated lumber.
Your risk from these exposures varies, depending on how often you do this type of work. To reduce your exposure
to these chemicals: work in a well-ventilated area, and work with approved safety equipment, such as those dust
masks that are specifically designed to filter out microscopic particles.
11. WARNING! The engine exhaust from this product contains chemicals known to cause cancer, birth defects, or
other reproductive harm.
12. HOLD THE HANDLE AND WAND SECURELY WITH BOTH HANDS. Expect the wand to move when the trigger is
pulled due to reaction forces. Failure to do so could cause loss of control and injury to self and others.
13. NEVER LEAVE MACHINE RUNNING UNATTENDED. Don’t leave machine until it comes to a complete stop.
14. BE THOROUGHLY FAMILIAR WITH CONTROLS. Know how to stop the machine and relieve pressure quickly.
15. DON’T ABUSE THE HOSE. Keep hose away from heat, oil, sharp objects, high-pressure jets, or moving parts.
Never pull the machine by the hose. Do not use a damaged or kinked hose. Never drive over any of the hoses.
page 4
SYMBOLOGY
The following signal words and symbols may be used on this machine. Please study them and learn their meaning.
Proper interpretation of symbols and signal words will allow you to operate the machine better and safer.
SYMBOL SIGNAL MEANING
DANGER:
WARNING:
CAUTION:
CAUTION:
Indicates an imminently hazardous situation, which, if not avoided, will
result in death or serious injury.
Indicates a potentially hazardous situation, which, if not avoided, could
result in death or serious injury.
Indicates a potentially hazardous situation, which, if not avoided, may
result in minor or moderate injury.
(Without Safety Alert Symbol) Indicates a situation that may result in
property damage.
SYMBOL NAME DESIGNATION/EXPLANATION
Read the Operator’s Manual
Eye Protection
Hot Surface
To reduce the risk of injury, read Operator’s Manual before using.
This machine must be attended during operation.
Always wear safety goggles or safety glasses with side shields and,
as necessary, a full face shield when operating this product. All
eye protection must be marked to comply with ANSI Z87.1.
To reduce the risk of injury or damage, avoid contact with any
hot surface.
Risk of Injections
Risk of Explosion
Risk of Fire
Toxic Fumes
Kickback
Electric Shock
Chemical Burns
To reduce the risk of injection or injury, never direct a water stream
towards people or pets, or place any body part in the stream.
Leaking hoses and fittings are also capable of causing injection
injury. Do not hold hoses or fittings.
Risk of explosion. Do not spray flammable liquids.
Risk of fire. Do not add fuel when the product is operating or hot.
Keep unit 3 feet (1 meter) from combustible objects.
Risk of asphyxiation. Use this product only in a well-ventilated
area.
To reduce the risk of injury from kickback, hold the wand
securely with both hands when the machine is on.
Risk of electrocution. Never direct spray towards any electrical
devices.
Risk of chemical burns. Do not use acids, toxic, or corrosive
chemicals with this product.
page 5
PRODUCT SPECIFICATIONS
Fig. 1
HOSE
STORAGE
BAG
Cat.
No.
4555-22
Engine
Size
389cc
Engine
Output
13 HP
Fuel Tank
Capacity
3.5 Gal.
Maximum
Pressure
3750 PSI
FUNCTIONAL DESCRIPTION
Nominal
Maximum
Volume
4.0 GPM
CHOKE
FUEL VALVE
LEVER
THROTTLE
LEVER
RECOIL
STARTER
SPRAY WAND
EXTENSION
SPRAY WAND
TRIGGER WITH
LOCK OFF
PRESSURE/FLOW
WAND
STORAGE
HOLSTER
ADJUSTMENT
HANDLE
AND NOZZLE
DETERGENT
METERING
VALVE
NOZZLES
HOLDER
CRANE
LIFTING
HOOK
MOVING
HANDLE
FUEL TANK
MUFFLER
SHIELD
page 6
FRAME
SUPPORT
HONDA ENGINE
FEATURES
KNOW YOUR PRESSURE WASHER
See Figure 1.
The safe use of this product requires an understanding of
the information on the tool and in this operator’s manual
as well as a knowledge of the project you are attempting. Before using this product, familiarize yourself with all
operating features and safety rules.
CRANE LIFTING HOOK
The crane lifting hook in the center of the unit makes lifting
the machine for transportation and/or relocation easy.
DETERGENT METERING VALVE
This detergent metering valve allows the user to add more
or less detergent into the low pressure stream for the
correct amount of detergent for every project.
E-Z START VALVE
This feature allows easy start of the engine eliminating the
need to prime the spray wand (press the trigger).
FUEL TANK
This fuel tank has a maximum 3.5 gallon capacity.
FUEL VALVE LEVER
The fuel valve lever opens and closes to allow fuel to pass
between the fuel tank and the carburetor. The lever must
be open to start the engine and should always be closed
before storing the machine.
HONDA GX390 ENGINE
This industrial strength Honda engine enables the
pressure washer to achieve 3,750 PSI (pounds per square
inch) at a rate of 4.0 GPM (gallons per minute). Please
read the engine manual included with this product.
NOTE: This engine comes equipped with an Oil Alert™
system that automatically stops the engine when the oil
level drops below a safe limit. This system is designed
to prevent engine damage caused by not having enough
oil in the crankcase.
HOSE STORAGE BAG
A hose storage bag, located on the back of the machine,
provides easy storage and retrieval of hoses.
ON / OFF SWITCH
The on/off switch must be in the ON position (down) for
the engine to run. When the switch is in the OFF position
(up), the engine will stop running.
PRESSURE/FLOW ADJUSTMENT HANDLE
Use the pressure/flow adjustment handle to change the
pressure/flow levels of the cleaning stream for acceptable
pressure/flow for every project.
PRESSURE RELIEF VALVE
The pressure relief valve prevents unsafe pressure levels
from building up in the pressure washer. It is not uncommon to notice occasional drips from the valve.
RECOIL STARTER
The recoil starter is pulled to start the machine.
SPARK ARRESTOR
This engine is not factory equipped with a spark arrestor.
In some areas it is illegal to operate an engine without a
spark arrestor. A spark arrestor is available from authorized Honda servicing dealers. Please refer to the engine
manual included with this product for more information.
SPRAY WAND
The spray wand has a grooved gripping surface that
provides added control of the wand and helps reduce
fatigue.
THERMAL RELIEF VALVE
To prevent water temperature from reaching harmful
levels in the pump, the thermal relief valve will release
a small amount of water from a rubber hose. Once the
water has reached safe temperature levels, the thermal
relief valve will reset itself.
TRIGGER WITH LOCK OFF
Pulling the trigger releases a stream of water for high
pressure cleaning. The lock off provides protection against
unauthorized use or unintentional use.
WAND STORAGE HOLSTER
Store the spray wand and extension in the convenient wand storage holster provided on the side of the
machine.
WATER INLET FILTER
This filter helps keep solid impurities in the water from
flowing through the machine.
page 7
ASSEMBLY
WARNING
To reduce the risk of serious injury, do not operate
this machine if any parts are damaged or missing.
Replace the parts before use.
WARNING
Do not attempt to modify this machine or use
accessories not recommended for use with this
machine. Any alteration or modification is misuse
and could result in a hazardous condition leading
to serious personal injury.
UNPACKING
This product requires assembly.
1. Carefully cut the box down the sides then remove the
machine and any accessories from the box. Make sure
that all items listed in the packing list are included.
NOTE: This machine is heavy and requires a mini-
mum of two people to lift. To avoid back injury, lift
with your legs and not your back.
2. Inspect the machine carefully to make sure no breakage or damage occurred during shipping.
3. Do not discard packing material until you have carefully inspected and satisfactorily operated the machine.
4. Grasp the handle on top of the machine frame. Pull
the handle up and back until it locks in place.
5. If any parts are damaged or missing, please call
1-800-729-3878 (1-800-SAWDUST) for assistance.
(Packing List continued)
4-Cycle Engine Oil (10W30)
Warranty Registration Card
Engine Manual
Operator’s Manual
NOTE: Do not start the pressure washer until the engine
has been filled with oil, all hoses are connected, and the
water is turned on. Running this machine without sufficient
oil will damage the engine; running this machine without
water will damage the high-pressure pump.
ATTACHING THE WHEEL ASSEMBLY
See Figure 2.
To attach the wheels to the pressure washer base:
1. Locate the axle, flat washers, hitch pins, and wheels.
Remove the hitch pin from the axle.
2. Slide the axle through the hole in the center of the
wheel then slide a washer over the axle.
3. Lift the machine and slide the axle/wheel/washer
combination into the wheel mounting hole in the
machine base as shown.
4. Push the hitch pin into the hole on the end of the axle
to secure the wheel assembly.
NOTE: The hitch pin should be pushed into the axle
until the center of the pin rests on top of the axle.
5. Repeat with the second wheel.
Fig. 2
PACKING LIST
Pressure Washer
50 ft. High Pressure Hose
Spray Wand Assembly (upper)
Spray Wand Extension (lower)
Wand Storage Holster
Quick-Connect Nozzle (5)
Nozzle Cleaning Tool
Injection Hose
Wheel (2)
Flat Washer (2)
Axle (2)
Hitch Pin (2)
Frame Support (2)
Hex Bolts & Hex Nuts (4-40 mm, 4-25 mm)
page 8
WASHER
AXLE
HITCH PIN
ASSEMBLY
INSTALLING THE FRAME SUPPORTS
See Figure 3.
�1. Locate the frame supports, hex bolts (2 long and 2
short), and hex nuts.
�2. Raise the end of the pressure washer high enough to
ess the frame bottom. Position blocks of wood
acc
under the machine for support.
�3. Align the hole on the frame support with holes on
machine frame.
�4. Insert hex bolts through the hole in the machine frame
so that they pass through the frame support. Tighten
the bolts to the frame securely using hex nuts.
�5. Repeat on other side.
INSTALLING THE PRESSURE/FLOW ADJUSTMENT HANDLE AND PUMP OIL CAPS
See Figure 4.
Remove and discard the cap securing the plastic bag to
the oil pump. Remove both caps from the bag.
To install the pump oil cap:
Screw the pump oil cap into the hole covering the oil
reservoir.
To install the pressure/flow adjustment handle cap:
1. Place the cap over the top of the adjustment handle.
2. Push down firmly until the cap snaps in place.
Fig. 3
Fig. 4
HEX BOLTS
(SHORT)
HEX BOLTS
(LONG)
HEX NUTS
FRAME
SUPPORT
KEY SLOTS
INSTALLING THE WAND STORAGE HOLSTER
See Figure 4.
Place key slots (on back of wand storage holster) over the
two bolts. Push the holster against the frame. When the
bolts are through the key slots, push the holster toward
the floor. Tighten the hex nuts.
PUMP OIL CAP
PRESSURE/FLOW
ADJUSTMENT
HANDLE CAP
page 9
ASSEMBLY
WARNING
Make sure the nozzle and hose connections are
secure before starting the machine. A non-secured
accessory could become a projectile if not properly
installed which could result in serious injury.
ASSEMBLING THE SPRAY WAND
See Figure 5.
1. Place the threaded end of the wand extension in the
connector on the end of the spray wand assembly.
2. Turn the connector clockwise until it stops. This
secures the wand extension in place.
3. When not in use, remove the spray wand extension
from the spray wand by turning the connector
counterclockwise. Store the unassembled spray
wand in the spray wand storage holster.
Fig. 5
GROOVED
GRIPPING
SURFACE
SPRAY
WAND
SPRAY
WAND
EXTENSION
CONNECTOR
Fig. 6
QUICK-CONNECT
COLLAR
HIGH
PRESSURE
HOSE
INLET
COUPLER
LISTEN FOR A “CLICK” THEN PULL ON HOSE TO BE
CERTAIN IT IS SECURELY TIGHTENED
“CLICK”
ATTACHING INJECTION HOSE
See Figure 7.
Before detergent can be used with this machine, the
injection hose must be attached.
1. Remove the clear injection hose. Uncoil the hose.
2. Push the open end of the injection hose securely
over the fitting.
3. Place the filtered end of the injection hose in the
bottle of detergent.
Fig. 7
INJECTION
HOSE
CONNECTING THE HIGH PRESSURE HOSE TO
THE SPRAY WAND
See Figure 6.
1. Remove the high pressure hose from the storage bag
and uncoil the hose.
2. Pull back and hold the quick-connect collar on the
high pressure hose. Insert the inlet coupler on the
spray wand handle into the collar.�
3. Release the collar and push until it clicks.� Pull on
the hose to be certain it is properly secured.
page 10
INJECTION
HOSE
FITTING
ASSEMBLY
ADDING OIL TO THE ENGINE
See Figure 8.
NOTE: This machine has been shipped with approxi
mately 2 oz. of oil in the engine from testing. You must
add oil to the engine before starting it the first time.
This engine comes with an Oil Alert™ feature that will shut
off the engine when a specific oil level is not maintained.
The engine will not restart until an appropriate oil level is
reached.
1. Place pressure washer on a flat, level surface.
2. Unscrew the oil cap / dipstick by turning counterclockwise.
3. Using 4-stroke engine oil (10W30), fill to the upper level of the oil filter neck (4-cycle engine oil
provided).
4. Replace the oil cap / dipstick and securely tighten.
5. Clean up any spills before starting the engine.
NOTE: This engine has a total oil capacity of 32 oz.
(.95 liters). However, since a small amount of oil was put
in the machine at the factory, the entire bottle of oil may
not be needed.
Fig. 8
OIL CAP /
DIPSTICK
UPPER LEVEL
WARNING
Gasoline and its vapors are highly flammable and
explosive. To prevent serious personal injury and
property damage, handle gasoline with care. Keep
away from ignition sources, handle outdoors only,
do not smoke while adding fuel, and wipe up spills
immediately.
ADDING GASOLINE TO THE FUEL TANK
See Figure 9.
When adding gas to the pressure washer, make sure the
unit is sitting on a flat, level surface. If the engine is hot,
let the pressure washer cool before adding gas. ALWAYS
fill the fuel tank outdoors with the machine turned off.
NOTE: Use unleaded gas only. DO NOT mix oil with
gas.
1. Before removing the fuel cap, clean the area around
it. Remove the fuel cap.
2. Insert a clean funnel into the fuel tank then slowly
pour gasoline into the tank. Fill tank to approximately
1/2 in. below the top of the tank neck (this allows
for fuel expansion).
3. Replace fuel cap and tighten securely.
4. Clean up any spills before starting the engine.
LOWER
LEVEL
Fig. 9
FUEL
CAP
FUNNEL
page 11
ASSEMBLY
CONNECTING THE GARDEN HOSE TO THE
PRESSURE WASHER
See Figure 10.
The water supply must come from a clean water source
(e.g. public water main or well) with the following
specifications:
• 8 GPM flow rate (minimum)
• 30 PSI (minimum)
NEVER use hot water or standing water from pools,
lakes, etc. Use only a reinforced, high-quality garden
hose with the following requirements:
• 5/8 in. diameter hose (minimum), 3/4 in. diameter
hose (recommended)
BEFORE connecting the garden hose to the
pressure washer:
1. Run water through the hose for 30 seconds to clean
any debris and air from the hose.
2. Inspect the filter in the water intake.
3. If the filter is damaged or dirty, do not use the
machine until the filter has been cleaned or
replaced.
������To connect the garden hose to the machine:
1. Uncoil the garden hose.
NOTE: There must be a minimum of 50 feet of
unrestricted hose between the pressure washer
intake and the hose faucet or shut off valve (such
as a “Y” shut off connector).
2. With the hose faucet turned completely off, attach
the end of the garden hose to the water intake. Hand
tighten.
WARNING
Make sure the nozzle and hose connections are
secure before starting the machine. A non-secured
accessory could become a projectile if not properly
installed which could result in serious injury.
CONNECTING THE HIGH PRESSURE HOSE TO
THE PUMP
See Figure 11.
1. Pull back and hold the quick-connect collar on the
pump. Fit the inlet coupler on the end of the high
pressure hose into the collar. (Use only steel braided,
reinforced hose rated to a minimum 4,000 PSI.)
2. Release the collar and push until it clicks. Pull on
the hose to be certain it is properly secured.
Fig. 11
QUICK-CONNECT
COLLAR
“CLICK”
Fig. 10
page 12
GARDEN
HOSE
WATER
INTAKE
LISTEN FOR A “CLICK” THEN PULL ON HOSE TO BE
CERTAIN IT IS SECURELY TIGHTENED
OPERATION
DANGER
NEVER operate machine in a confined area where
carbon monoxide fumes can collect. Carbon monoxide, a colorless, odorless, and extremely dangerous gas, can cause unconsciousness, serious injury
or death. Do not operate in an enclosed area or
near open windows, vents, or doors. Fumes from
the unit can kill.
WARNING
Always wear safety goggles or safety glasses with
side shields when operating this product. All eye
protection must be marked to comply with ANSI
Z87.1. Failure to do so could result in objects being
thrown into your eyes, resulting in possible serious
injury.
WARNING
Do not use any attachments or accessories not
recommended by the manufacturer of this machine.
The use of attachments or accessories not recommended can result in serious personal injury.
CAUTION
The spray from your pressure washer is capable of
causing damage to surfaces such as wood, glass,
automobile paint, auto striping and trim, and delicate
objects such as flowers and shrubs. Before spraying,
check the item to be cleaned to assure yourself that
it is strong enough to resist damage from the force
of the spray. Avoid the use of a concentrated spray
stream except for very strong surfaces like concrete
and steel.
APPLICATIONS
You may use this product for the purposes listed below:
Remove dirt and mold from decks, cement patios,
house siding, etc.
Clean cars, boats, motorcycles, outdoor furniture,
grills, etc.
GENERAL INSTRUCTION
Do not operate this machine without the water supply
connected and turned on. Operating the pressure washer
with the water turned off will void your warranty and
damage the machine. Never run this pressure washer
for more than two (2) minutes without pulling the trigger
to allow cool water to enter the pump and the heated
(recirculated) water to exit.
Before attempting to start this product, always do
the following:
1. Connect all hoses as described in the Assembly
section.
2. Check all fluid levels.
3. Turn the garden hose on then squeeze the trigger to
relieve air pressure. Hold the trigger until a steady
stream of water appears and all “sputtering” from the
spray wand has stopped.
page 13
OPERATION
CAUTION
Do not run the pump without the water supply connected and turned on as this will result in damage
to the pump.
STARTING AND STOPPING THE PRESSURE
WASHER
See Figures 12 - 15.
NOTE: Before starting the engine, read the engine
operator’s manual.
To start:
1. Place the fuel valve lever in the on position.
2. If the engine is cold, move the choke lever to the closed
position. As the engine warms, move the choke to the
open position.
If the engine is warm, leave the choke lever in the open
position.
3. Move the throttle lever away from the MAX position
(pushed to the right) to about one-third of the way
towards the MIN position (pushed to the left).
4. Place the ON / OFF Switch in the ON ( l ) position.
5. Grasp the recoil starter and pull slowly until resistance
is felt. Give the recoil starter a short, brisk pull to start
the engine.
NOTE: If starting is difficult, release the pressure in the
spray wand by pulling the trigger.
6. Move the throttle lever to the MAX position once the
machine is running.
Fig. 13
SWITCH
Fig. 14
RECOIL
STARTER
Fig. 15
CHOKE
CLOSED
OFF
ON
OPEN
Fig. 12
page 14
THROTTLE
LEVER
STARTER
RECOIL
MAX
MIN
FUEL VALVE
LEVER
To stop:
1. Move the throttle lever to the MIN position.
2. Place the ON / OFF switch in the OFF ( O ) position.
3. Turn the fuel valve lever off.
OFF
ON
OPERATION
WARNING
Never direct water stream towards people or pets,
or place any part of the body in the stream path as
this may cause injection type injuries. Leaking hoses
and fittings are also capable of causing injection
injuries.
WARNING
Hold the handle and wand securely with both
hands. Expect the wand to move when the
trigger is pulled due to reaction forces. Failure to do
so could cause loss of control and injury to yourself
and others.
USING THE SPRAY WAND TRIGGER
See Figure 16.��
For greater control and safety, keep both hands on the
spray wand at all times.
1. Pull back and hold trigger.
2. To stop water flow, release the trigger.
To engage the lock off:
1. Push up on the lock off until it clicks into the slot.
DO NOT remove the lock off feature from the spray
wand.
To disengage the lock off:
1. Push the lock off down and into its original position.
To increase or decrease the water flow (discharge
pressure) using the pressure adjustment handle:
1. Release the trigger.
2. Turn the pressure adjustment handle on the pump to
increase or decrease the water flow (discharge pressure).
Fig. 16
SLOT
LOCK OFF
TRIGGER
page 15
OPERATION
WARNING
Make sure the nozzle and hose connections are
secure before starting the machine. A non-secured
accessory could become a projectile if not properly
installed which could result in serious injury.
SELECTING THE CORRECT QUICK-CONNECT
NOZZLE FOR THE JOB
See Figure 17.��
Before starting any cleaning job, determine the best
nozzle for the job. Each of the five nozzles has a different
spray pattern. The nozzle colors and spray patterns are:
black (low pressure), white (medium pressure) 40˚, green
(medium pressure) 25˚, yellow (high pressure) 15˚, and
red (high pressure) 0˚.
NOTE: For a gentle rinse or cleaning large areas,
select the white 40˚ or green 25˚ nozzle. �Scouring the
surface requires a more direct spray of water. Select the
yellow 15˚ or red 0˚ nozzle for tough jobs. �Apply detergent
using the black nozzle with the thumb dial in the MAX
position and the detergent metering valve in any position other than off. Use only specifically recommended
nozzles.
To disconnect a nozzle from the spray wand once the
cleaning job is complete:
1. �Place ON / OFF Switch in the OFF ( O ) position.
2. Shut off the water supply at the water main then pull
the spray wand trigger to release water pressure.
3. Engage the lock off on the wand by pushing up on the
lock off until it clicks into the slot.
4. Pull back and remove the nozzle. Place nozzle in the
nozzle storage area on top of the machine.
Fig. 17
QUICK-CONNECT
COLLAR
SPRAY WAND
EXTENSION
“CLICK”
NOZZLE
WARNING
NEVER change nozzles without locking the
lock off on the spray wand and NEVER point
the wand at your face or at others. The quickconnect feature contains small springs that
could eject the nozzle with some force. Failure
to heed this may cause personal injury.
Using the quick-connect collar, changing nozzles is quick
and easy.
1. �Place ON / OFF Switch in the OFF ( O ) position.
2. Shut off the water supply at the water main then pull
the spray wand trigger to release water pressure.
To connect a nozzle to the spray wand:
1. Engage the lock on the wand by pushing up on the
lock off until it clicks into the slot.
2. Insert the desired nozzle. Push until a “click” is heard.
Tug on the nozzle to be certain it is secured properly
before releasing the lock off on the wand.
3. Release the lock off on the wand by pushing it down
into its original position.
WARNING
Never lift or carry this machine using the moving
handle. Do not move this machine by pulling on the
hoses.
MOVING THE PRESSURE WASHER
See Figure 18.
1. Place ON / OFF Switch in the OFF ( O ) position.
2. Standing at the back of the machine, grasp the handle
firmly with both hands.
3. Tilt the machine toward you until it balances on the
wheels then roll the machine to the desired position.
page 16
OPERATION
USING THE PRESSURE WASHER
See Figure 19.
1. �Turn off the pressure washer and shut off the water
supply. Pull trigger to release water pressure.
2. Engage the lock off on the trigger by pushing up on
the lock off until it clicks into the slot.
3. Select the correct nozzle for the job:
• Use lower pressure nozzle (green or white) to wash
items such as a car or boat.
• Use higher pressure nozzle (red or yellow) for jobs
such as stripping paint and degreasing the driveway.
When using these nozzles, test a small area first to
avoid surface damage.
4. Start at the top of the area and work down, overlapping
strokes. Keep all hoses away from the muffler.
For the most effective cleaning, the spray nozzle should
be between 8 in. and 24 in. from the surface to be cleaned.
If the spray is too close it can damage the cleaning
surface.
NOTE: See Washing with Detergent for detergent
application.
WASHING WITH DETERGENT
Use only detergents designed for pressure washers
(household detergents, acids, alkalines, bleaches, solvents, flammable material, or industrial grade solutions
can damage the pump). Many detergents require mixing
prior to use. Prepare cleaning solution as instructed on
the solution bottle. ALWAYS test detergents first in an
area that is hidden.
1. Place the injection hose in the bottom of the detergent
bottle/container. DO NOT run chemicals through the
inlet of the pump; use the chemical injection port only.
2. Install the black nozzle on the spray wand.
NOTE: The thumb dial must be in the MAX position
and the detergent metering valve in any position other
than off.
3. Spray the detergent on a dry surface using long, even,
overlapping strokes. To prevent streaking, do not allow
detergent to dry on the surface.
from the muffler.
Before shutting off the engine:
1. Place the injection hose in a bucket of clean water.
2. Flush for 1 - 2 minutes (spray clear water through the
spray wand).
3. Shut off the engine.
NOTE: Shutting OFF ( O ) the engine will not relieve
pressure in the system. Pull trigger to release water
pressure.
See Using the Pressure Washer for rinsing instructions.
Keep all hoses away
Fig. 18
Fig. 19
TO DECREASE
DETERGENT
TO MOVE THE MACHINE
TO INCREASE
DETERGENT
DETERGENT
METERING
VALVE
DETERGENT
CONTAINER
INJECTION
HOSE
page 17
MAINTENANCE
WARNING
When servicing, use only identical replacement
parts. Use of any other parts may create a hazard
or cause product changes.
WARNING
To reduce the risk of injury, always shut off engine
and relieve system pressure before performing any
maintenance. Never disassemble the machine.
GENERAL MAINTENANCE
NOTE: The Honda GX390 engine has a separate warranty
found in the engine manual (included with this product).
Avoid using solvents when cleaning plastic parts. Most
plastics are susceptible to damage from various types of
commercial solvents and may be damaged by their use.
Use clean cloths to remove dirt, dust, oil, grease, etc.
Only the parts shown on the parts list are intended to
be repaired or replaced by the customer. All other parts
should be replaced at an authorized service center.
WARNING
Never let brake fluids, gasoline, petroleum-based
products, penetrating oils, etc., come in contact
with plastic parts. Chemicals can damage, weaken
or destroy plastic which may result in serious personal injury.
Before running the engine, perform the following preoperation steps:
1. Check that all bolts, nuts, etc., are securely tightened.
2. �Make sure the air filter is clean (see separate engine
manual).
3. �Check both the engine oil level and the fuel tank level;
refill as needed.
4. �Inspect the work area for hazards.
5. �If there is excessive noise or vibration, stop the unit
immediately.
NOZZLE MAINTENANCE
See Figure 20.
Excessive pump pressure (a pulsing sensation felt while
squeezing the trigger) may be the result of a clogged or
dirty nozzle.
1. �Turn off the pressure washer and shut off the water
supply. Pull trigger to release water pressure.
2. �Remove the nozzle from the spray wand.
NOTE: Never point the spray wand at your face.
3. �Using the nozzle cleaning tool provided, free any for-
eign materials clogging or restricting the nozzle.
4. �Using a garden hose, flush debris out of nozzle by
back flushing (running the water through the nozzle
backwards or from the outside to the inside).
5. �Reconnect the nozzle to the spray wand.
6. �Turn on the water supply and start the engine.
Fig. 20
NOZZLE
CLEANING TOOL
NOZZLE
page 18
MAINTENANCE
STORING THE PRESSURE WASHER
See Figures 21 - 22.
It is important to store this product in an area that will
not experience freezing temperatures. Always empty
water from hoses and pump, and empty fuel from the
fuel tank.
NOTE: Use of a fuel stabilizer and pump saver will give
you better performance and increase the life of the
machine.
AFTER THE MACHINE HAS COOLED COMPLETELY:
Discharge Fuel:
Drain the fuel tank completely. Stored gas can go stale
in 30 days.
Engine Oil:
Drain the oil and replace with fresh, clean oil.
Spark Plug:
1. Disconnect spark plug wire and remove the spark plug.
Pour about a teaspoon of clean, air-cooled, four-cycle
oil through the spark plug hole into the combustion
chamber.
2. Leaving the spark plug out, pull the starter cord two
or three times to coat the inside of the cylinder wall.
3. Inspect the spark plug and clean or replace, as neces-
sary.
4. Reinstall the spark plug, but leave the spark plug wire
disconnected.
Air Filter:
1. Clean or replace the air filter according to engine
manufacturer instructions. (See engine manual.)
Hoses and Pump:
Flush the injection hose with clean water for 1-2 minutes.
Remove all hoses. Empty the pump by pulling on the
recoil starter about 6 times. This should remove most of
the liquid from the pump.
Moving Handle:
To collapse the moving handle for storage, pull and hold
the release pin while pushing the handle down.
PUMP MAINTENANCE
We recommend having the pump oil changed every 200
hours to ensure longer life of the machine. This service
should be performed by an authorized service center.
Fig. 21
RELEASE
PIN
Fig. 22
TO STORE THE MACHINE
PREPARING FOR USE AFTER STORAGE
1. Pull the recoil starter grip three or four times to clean
oil from the combustion chamber.
2. Remove spark plug from the cylinder. Wipe oil from
the spark plug and return it to the cylinder.
3. Reconnect the spark plug wire.
4. Refuel the machine as described earlier in the opera-
tor’s manual.
page 19
MAINTENANCE
PERIODIC MAINTENANCE SCHEDULE
TABLE
Servicing requires extreme care and knowledge and should
be performed only by a qualified service technician. For
service we suggest you return the product to your nearest
authorized service center for repair. When servicing, use
only identical MILWAUKEE replacement parts.
NOTE: For engine repair, service, and warranty, please
see the Honda engine manual, call 1-(770)-497-6400, or
visit the Honda website at www.honda-engines.com.
PERIODIC MAINTENANCE SCHEDULE TABLE
Maintenance Items Every Every Every Every Every Every
8 hrs. 20 hrs. 50 hrs. 200 hrs. 500 hrs. 1,000 hrs.
Replace fuel filter *** X
Change engine oil * or ** X
Change pump oil * or *** X
Clean water inlet filter X
* Initial oil change should be performed after the first 20 hours of operation. Thereafter, change oil every 50 hours of
use. Do not pour old oil down sewage drains, into garden soil, or into open streams. Your local zoning or environmental
regulations will give you more detailed instruction on proper disposal.
** Read the Honda owner’s manual for information.
*** Have performed by your nearest MILWAUKEE service center.
ACCESSORIES
WARNING
Do not use any attachments or accessories not
recommended by the manufacturer of this tool.
The use of attachments or accessories not recommended can result in serious personal injury.
For a listing of accessories, refer to the MILWAUKEE
tool catalog or go online to www.milwaukeetool.com. To
obtain a catalog, contact your local distributor or service
center.
page 20
TROUBLESHOOTING
PROBLEM CAUSE SOLUTION
Engine fails to start 1. Engine switch is in the off position. 1. Move switch to start.
2. Fuel valve lever is OFF. 2. Move the lever to ON.
3. No fuel in tank. 3. Fill tank.
4. Spark plug shorted or fouled. 4. Replace spark plug.
5. Spark plug is broken (cracked 5. Replace spark plug.
porcelain or electrodes broken).
6. Ignition lead wire shorted, broken, 6. Replace lead wire or attach to spark
or disconnected from spark plug. plug.
7. Ignition inoperative. 7. Contact authorized service center.
8. Oil level is low. 8. Add oil to the engine.
Engine hard to start 1. Water in gasoline. 1. Drain entire system and refill with
fresh fuel.
2. Engine is under or over choked. 2. Adjust choke as necessary.
3. Weak spark at spark plug. 3. Contact authorized service center.
4. Recoil is tight. 4. Release the pressure in the spray
wand by pulling the trigger.
Engine lacks power 1. Dirty air filter. 1. Clean or replace air filter.
2. Clogged fuel filter. 2. Replace fuel filter.
Detergent fails to mix with spray 1. Detergent injection hose is not 1. Insert injection hose into detergent
properly submerged. storage bucket.
2. High pressure nozzle attached. 2. Use low pressure nozzle (black) to
apply detergent.
3. Injection hose is clogged/kinked. 3. Remove and replace injection hose.
4. Detergent metering valve in 4. Place detergent metering valve in
OFF position. any MAX position.
5. Chemical injector is clogged. 5. Clean or replace injector.
Spray wand sputters 1. Air in garden hose. 1. Prime hose. Pull the switch trigger
and hold until steady stream of
water.
2. Diameter of garden hose is 2. Use min imu m of 5/8 in. h ose .
incorrect.
3. Flow rate is insufficient. 3. Call the local utility company.
4. Nozzle is clogged. 4. Clean nozzle as instructed in the
Maintenance section.
page 21
TROUBLESHOOTING
PROBLEM CAUSE SOLUTION
Machine doesn’t reach high 1. Diameter of garden hose is too 1. Replace with 3/4 in. garden hose.
pressure small.
2. Water supply is restricted. 2. Check garden hose for kinks, leaks,
and blockages.
3. Not enough inlet water. 3. Open water source full force.
4. Wrong nozzle is attached. 4. Attach the high pressure nozzle.
5. Engine throttle lever not in the 5. Open throttle completely.
maximum position.
6. Pressure adjustment handle not 6. Turn the handle to the maximum
set in the maximum position. pressure.
Pump doesn’t produce pressure 1. Low pressure nozzle installed. 1. Replace with high pressure nozzle.
2. Inadequate water supply. 2. Provide adequate water flow.
3. Spray wand leaks. 3. Replace wand.
4. Nozzle is clogged. 4. Clean nozzle.
5. Pump is faulty. 5. Contact authorized service center.
6. Air in line. 6. Squeeze trigger on spray wand to
remove air from line.
Pump runs but produces no flow 1. Pump is not primed. 1. Flood suction then restart pump.
Pump looses prime, chattering 1. Air leak in suction hose or
noise, pressure fluctuates for a loose liner or debris lodged in
hose. Avoid all unnecessary bends.
Do not kink hose.
2. Clogged suction strainer. 2. Clean strainer.
Loud knocking noise in pump 1. Cavitation or sucking air. 1. Check that water supply is turned
on.
2. Pulley loose on crankshaft. 2. Check key and tighten set screw.
3. Broken or worn bearing. 3. Contact authorized service center.
inlet. 1. Remove suction line and inspect it
page 22
WARRANTY
EVAPORATIVE EMISSION CONTROL WARRANTY STATEMENT
YOUR WARRANTY RIGHTS AND OBLIGATIONS
Your new MILWAUKEE brand gasoline powered product complies with all applicable U.S. EPA, Environment Canada,
and State of California emissions regulations.
The evaporative emissions portion of this coverage, as described below, is provided by Milwaukee Electric Tool Cor
poration. Separate emissions warranty coverage for other emissions related components is provided by the engine
manufacturer, as stated in a separate “Emission Control System Warranty” included with this product. Of course,
this product also includes a warranty that is not limited to emissions related components, as described elsewhere in
this operator’s manual.
CALIFORNIA EVAPORATIVE EMISSION CONTROL WARRANTY STATEMENT
The California Air Resources Board and Milwaukee Electric Tool Corporation, are pleased to explain the evaporative
emission control system’s warranty on your 2006 model year pressure washer. In California, new equipment that
uses small off-engines must be designed, built, and equipped to meet the State’s stringent anti-smog standards.
Milwaukee Electric Tool Corporation must warrant the evaporative emission control system on your pressure washer
for the period listed below, provided there has been no abuse, neglect or improper maintenance of your equipment.
Your evaporative emission control system may include parts such as: carburetors, fuel tanks, fuel lines, fuel caps, valves,
canisters, filters, vapor hoses, clamps, connectors, and other associated components. For engines less than or equal
to 80 cc, only the fuel tank is subject to the evaporative emission control warranty requirements of this section.
MANUFACTURER’S WARRANTY COVERAGE:
This evaporative emission control system is warranted for two years. If any evaporative emission-related part on your
equipment is defective, the part will be repaired or replaced by Milwaukee Electric Tool Corporation.
OWNER’S WARRANTY RESPONSIBILITIES:
� As the pressure washer owner, you are responsible for performance of the required maintenance listed in your
owner’s manual. Milwaukee Electric Tool Corporation recommends that you retain all receipts covering maintenance on your pressure washer, but Milwaukee Electric Tool Corporation cannot deny warranty solely for the lack
of receipts.
� As the pressure washer owner, you should, however, be aware that Milwaukee Electric Tool Corporation may deny
you warranty coverage if your pressure washer or a part has failed due to abuse, neglect, or improper maintenance
or unapproved modifications.
� You are responsible for presenting your pressure washer to a Milwaukee Electric Tool Corporation distribution
center or service center as soon as the problem exists. The warranty repairs should be completed in a reasonable
amount of time, not to exceed 30 days.
If you have a question regarding your warranty coverage, you should contact Milwaukee Electric Tool Corporation at
1-800-729-3878.
-
page 23
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