Simpson BIG BRUTE Series User manual

Part No. 7109550 Rev. 0 DEC 2016
4000 PSI
4GPM
BIG BRUTE SERIES
INSTRUCTION MANUAL
MODEL
65105
65106
If your pressure washer is not working properly or if there are parts missing or broken,
please DO NOT RETURN IT TO THE PLACE OF PURCHASE. Contact our Customer Service
Department at 1-844-375-7577.
IMPORTANT: Please make certain that the person who is to use this equipment carefully reads
and understands these instructions before operating.
SAVE THIS MANUAL FOR FUTURE REFERENCE

2
TABLE OF CONTENTS
Safety Guidelines - Definitions ....................................................................... 3
Important Safety Instructions ......................................................................... 3
Get to Know the Pressure Washer................................................................. 9
Basic Elements of a Pressure Washer..................................................... 9
Basic Elements of a Pump..................................................................... 10
Basic Elements of an Engine .................................................................10
Operation ......................................................................................................12
Pressure Washer Operating Features ....................................................12
Starting....................................................................................................14
Before Each Start Up .............................................................................14
Shutting Down) .......................................................................................16
Maintenance .................................................................................................16
Storage ...................................................................................................17
Engine .....................................................................................................17
Pressure Washer..................................................................................... 17
Accessories...................................................................................................18
Specifications................................................................................................ 18
Service Information....................................................................................... 18
Troubleshooting Guide..................................................................................19
Limited Warranty...........................................................................................23

3
SAFETY GUIDELINES - DEFINITIONS
This manual contains information that is important for you to know and understand.
This information relates to protecting YOUR SAFETY and PREVENTING
EQUIPMENT PROBLEMS. To help you recognize this information, we use the
symbols below. Please read the manual and pay attention to these symbols.
DANGER: Indicates an imminently hazardous situation which, if not avoided,
will result in death or serious injury.
WARNING: Indicates a potentially hazardous situation which, if not avoided,
could result in death or serious injury.
CAUTION: Indicates a potentially hazardous situation which, if not avoided, may
result in minor or moderate injury.
NOTICE: Indicates a practice not related to personal injury which, if not avoided,
may result in property damage.
IMPORTANT SAFETY INSTRUCTIONS
If you loan, rent, or sell this machine, be sure to include all instructional materials
with the unit!
DANGER: Carbon Monoxide. Using an engine indoors can kill you in
minutes. Engine/burner exhaust contains high levels of carbon monoxide
(CO), a poisonous gas you cannot see or smell. You may be breathing CO
even if you do not smell engine exhaust.
• NEVER use an engine or oil burner inside homes, garages, crawlspaces or other
partly enclosed areas. Deadly levels of carbon monoxide can build up in these
areas. Using a fan or opening windows and doors does NOT supply enough fresh
air.
• ONLY use outdoors and far away from open windows, doors and vents. These
openings can pull in engine exhaust. Never operate the pressure washer in or near
a location occupied by humans or animals.
• Even when the engine is used correctly, CO may leak into your home. ALWAYS use
a battery-powered or battery backup CO alarm in your house. Read and follow all
directions for CO alarm before using. If you feel sick, dizzy or weak at anytime,
move to fresh air immediately. See a doctor. You could have carbon monoxide
poisoning.
WARNING: Do not operate this unit until you read this instruction manual and
the engine instruction manual for safety, operation and maintenance instructions. If
you have any questions regarding the product, please contact our customer
service department at 1-844-375-7577.
DANGER: Risk of injection or severe injury. Keep clear of nozzle. Do not
direct discharge stream at persons or live animals. This product is to be used
only by trained operators.
WARNING: This product and its exhaust contain chemicals known to the State
of California to cause cancer, birth defects or other reproductive harm. In addition,
some cleaning products and dust contain chemicals known to the State of
California to cause cancer, birth defects or other reproductive harm. Wash hands
after handling.

4
WARNING: This product may not be equipped with a spark-arresting muffler.
If the product is not equipped and will be used around flammable materials or
on land covered with materials such as agricultural crops, forest, brush, grass or
other similar items, then an approved spark arrester must be installed and is legally
required in the state of California. It is a violation of California statutes section
130050 and/or sections 4442 and 4443 of the California Public Resources Code,
unless the engine is equipped with a spark arrester, as defined in section 4442, and
maintained in effective working order. Spark arresters are also required on some
U.S. Forest Service land and may also be legally required under other statutes and
ordinances.
SAVE THESE INSTRUCTIONS
DANGER: RISK OF EXPLOSION OR FIRE
WHAT CAN HAPPEN HOW TO PREVENT IT
• Spilled gasoline (diesel, kerosene,
approved alternate fuel) and it’s vapors
can become ignited from cigarette
sparks, electrical arcing, exhaust gas-
es and hot engine components such
as the muffler.
• Shut off engine and allow it to cool before
adding fuel to the tank.
• During refueling all ignition sources and
switches should be in the OFF position.
• Use care in filling tank to avoid spilling fuel.
Move pressure washer away from fueling
area before starting engine.
• Heat will expand fuel in the tank which
could result in spillage and possible
fire explosion.
• Keep maximum fuel level 1/2" (12.7mm)
below bottom of filler neck to allow for
expansion.
• Operating the pressure washer in an
explosive environment could result in
a fire.
• Operate and fuel equipment in well-
ventilated areas free from obstructions.
Equip areas with fire extinguisher suitable
for gasoline fires.
• Materials placed against or near the
pressure washer can interfere with
its proper ventilation features causing
overheating and possible ignition of
the materials.
• Never operate pressure washer in an area
containing dry brush or weeds.
• Improperly stored fuel could lead to
accidental ignition. Fuel improperly
secured could get into the hands of
children or other unqualified persons.
• Store engine and burner fuel in a clean
OSHA approved container, in a secure
location away from work area. Do not
allow debris or moisture to enter container.
• Spraying of gasoline, kerosene or any
kind of flammable solvent with this
product could result in serious injury
or death.
• Do not spray flammable liquids.
• Flammable liquids can create fumes
which can ignite, causing property
damage or serious injury.
• Operate only where open flame or torch is
permitted.

5
DANGER: RISK TO BREATHING (ASPHYXIATION)
WHAT CAN HAPPEN HOW TO PREVENT IT
• Breathing exhaust fumes will cause
serious injury or death! Engine
exhaust contains carbon monoxide,
an odorless and deadly gas.
• Operate pressure washer in a well-
ventilated area. Avoid enclosed areas
such as garages, basements, etc.
• Never operate unit in or near a location
occupied by humans or animals.
• Never connect pressure washer to a
TYPE B gas vent.
• Some cleaning fluids contain
substances which could cause injury
to skin, eyes or lungs.
• Use only cleaning fluids specifically rec-
ommended for high pressure washers.
Follow manufacturers recommendations.
Do not use chlorine bleach or any other
corrosive compound.
DANGER: RISK OF FLUID INJECTION AND LACERATION
WHAT CAN HAPPEN HOW TO PREVENT IT
• Your pressure washer operates at fluid
pressures and velocities high enough
to penetrate human and animal flesh
which could result in amputation or
other serious injury. Leaks caused
by loose fittings or worn or damaged
hoses can result in injection injuries.
DO NOT TREAT FLUID INJECTION
AS A SIMPLE CUT! See a physician
immediately!
• Inspect the high pressure hose regularly.
Replace the hose immediately if it is
damaged, worn, has melted from
contacting the engine, or shows any signs
of cracks, bubbles, pinholes, or other
leakage. Never grasp a high pressure
hose that is leaking or damaged.
• Never touch, grasp or attempt to cover a
pinhole or similar water leak on the high
pressure hose. The stream of water IS
under high pressure and WILL penetrate
skin.
• Never place hands in front of nozzle.
• Direct spray away from self and others.
• Make sure hose and fittings are tightened
and in good condition. Never hold onto
the hose or fittings during operation.
• Do not allow hose to contact muffler.
• Never attach or remove wand or hose
fittings while system is pressurized.
• When using replacement lances or guns
with this pressure washer, DO NOT use
a lance and/or lance/gun combination
that is shorter in length than what was
provided with this pressure washer as
measured from the nozzle end of the
lance to the gun trigger.
• Use only accessories rated equal to or
higher than the rating of the pressure
washer.

6
• Injuries can result if system pressure
is not reduced before attempting
maintenance or disassembly.
• To relieve system pressure, shut off
engine, turn off water supply and pull gun
trigger until water stops flowing.
DANGER: RISK OF INJURY FROM SPRAY
WHAT CAN HAPPEN HOW TO PREVENT IT
• High-velocity fluid spray can cause
objects to break, projecting particles
at high speed.
• Always wear safety glasses. Wear
protective clothing to protect against
accidental spraying.
• Never point wand at or spray people or
animals.
• Light or unsecured objects can
become hazardous projectiles.
• Always secure trigger lock when wand
is not in service to prevent accidental
operation.
• Never permanently secure trigger in pull-
back (open) position.
DANGER: RISK OF UNSAFE OPERATION
WHAT CAN HAPPEN HOW TO PREVENT IT
• Unsafe operation of your pressure
washer could lead to serious injury or
death to you or others.
• Do not use chlorine bleach or any other
corrosive compound.
• Become familiar with the operation and
controls of the pressure washer.
• Keep operating area clear of all persons,
pets and obstacles.
• Do not operate the product when fatigued
or under the influence of alcohol or drugs.
Stay alert at all times.
• Never compromise the safety features of
this product.
• Do not operate machine with missing,
broken or unauthorized parts.
• Never leave wand unattended while unit is
running.
• Do not obstruct the burner exhaust.
• Do not tamper with the safety pressure
relief valve.
• Do not tamper with the unloader valve.
• Do not modify the pressure washer.
• If proper starting procedure is not
followed, engine can kickback causing
serious hand and arm injury.
• If engine does not start after two pulls,
squeeze trigger of gun to relieve pump
pressure. Pull starter cord slowly until
resistance is felt. Then pull cord rapidly to
avoid kickback and prevent hand or arm
injury.
• The spray gun/wand is a powerful
cleaning tool that could look like a toy
to a child.
• Keep children away from the pressure
washer at all times.

7
• Reactive force of spray will cause gun/
wand to kickback, and could cause
the operator to slip or fall or misdirect
the spray. Improper control of gun/
wand can result in injuries to self and
others.
• Do not overreach or stand on an unstable
support.
• Do not use pressure washer while
standing on a ladder.
• Grip gun/wand firmly with both hands.
Expect the gun to kickback when
triggered.
DANGER: RISK OF INJURY OR PROPERTY DAMAGE WHEN
TRANSPORTING OR STORING
WHAT CAN HAPPEN HOW TO PREVENT IT
• Fuel or oil can leak or spill and could
result in fire or breathing hazard.
Serious injury or death can result.
Fuel or oil leaks will damage carpet,
paint or other surfaces in vehicles or
trailers.
• Oil could fill the cylinder and damage
the engine if the unit is not stored or
transported in an upright position.
• If pressure washer is equipped with a fuel
shut-off valve, turn the valve to the OFF
position before transporting to avoid fuel
leaks. If pressure washer is not equipped
with a fuel shut-off valve, drain the fuel
from tank before transporting.
Only transport fuel in an OSHA-approved
container.
Always place pressure washer on a
protective mat when transporting to
protect against damage to vehicle from
leaks.
Always transport and store unit in an
upright position. Remove pressure
washer from vehicle immediately upon
arrival at your destination.
DANGER: RISK OF ELECTRICAL SHOCK
WHAT CAN HAPPEN HOW TO PREVENT IT
• Spray directed at electrical outlets or
switches, or objects connected to an
electrical circuit, could result in a fatal
electrical shock.
• Unplug any electrically operated product
before attempting to clean it. Direct spray
away from electric outlets and switches.
DANGER: RISK OF CHEMICAL BURN
WHAT CAN HAPPEN HOW TO PREVENT IT
• Use of acids, toxic or corrosive
chemicals, poisons, insecticides, or
any kind of flammable solvent with this
product could result in serious injury or
death.
• Do not spray acids, gasoline, kerosene,
or any other flammable materials with this
product. Use only household detergents,
cleaners and degreasers recommended
for use with pressure washers.
• Wear protective clothing to protect
eyes and skin from contact with sprayed
materials.

8
WARNING: RISK OF BURSTING
WHAT CAN HAPPEN HOW TO PREVENT IT
• High-velocity fluid spray directed at
pneumatic tire sidewalls (such as
found on automobiles, trailers and
the like) could damage the sidewall
resulting in serious injury.
• On pressure washers rated above
1600 psi (11032 kPa) use the widest
fan spray (40º nozzle) and keep the
spray a minimum of 8" (20 cm) from the
pneumatic tire sidewall. Do not aim spray
directly at the joint between the tire and
rim.
WARNING: RISK OF HOT SURFACES
WHAT CAN HAPPEN HOW TO PREVENT IT
• Contact with hot surfaces, such as
engine exhaust components, could
result in serious burn.
• During operation, touch only the control
surfaces of the pressure washer. Keep
children away from the pressure washer
at all times. They may not be able to
recognize the hazards of this product.
• Contact with spray will result in
serious burn.
• DO NOT touch spray, ALWAYS direct
spray away from self and others.
WARNING: RISK OF INJURY FROM LIFTING
WHAT CAN HAPPEN HOW TO PREVENT IT
• Serious injury can result from
attempting to lift too heavy an object.
• The pressure washer is too heavy to be
lifted by one person. Obtain assistance
from others before lifting.
NOTICE: RISK OF PROPERTY DAMAGE
WHAT CAN HAPPEN HOW TO PREVENT IT
• Muffler and burner exhaust heat can
damage painted surfaces, melt any
material sensitive to heat (such as
siding, plastic, rubber, vinyl or the
pressure hose, itself), and damage
live plants.
• Always keep pressure washer a mini-
mum of 4' (1.2 m) away from surfaces
(such as houses, automobiles or live
plants) that could be damaged from
muffler exhaust heat.
SAVE THESE INSTRUCTIONS
FOR FUTURE USE

9
GET TO KNOW THE PRESSURE WASHER
NOTE: Photographs and line drawings used in this manual are for reference
only and do not represent a specific model.
Compare the illustrations with your unit to familiarize yourself with the location of
various controls and adjustments. Save this manual for future reference.
BASIC ELEMENTS OF A PRESSURE WASHER (FIG. 1)
1
Q
P
R
G
B
C
A
I
H
O
E
F
A. Engine: Refer to the
Engine Owner's
Manual for location
and operation of
engine controls.
B. Engine fuel fill
C. Engine fuel tank
D. Burner fuel tank
E. Burner fuel tank fill
F. Burner System
G. Burner On/
Off switch
H. High-pressure
hot water outlet
I. Quick-connect
nozzles (0º, 15º.
25º, 40º, black)
J. EVAP canister
(not shown)
K. High-pressure
pump (not shown)
L. Pump water inlet
(not shown)
M. Chemical siphon
hose (not shown)
N. Unloader (not
shown)
O. Battery Box
P. High pressure
spray wand
Q. High pressure hose
R. Spray gun

10
BASIC ELEMENTS OF A PUMP (FIG. 2)
NOTICE: The high-pressure pump was filled with oil at the factory. Always check
oil level before using (refer to Maintenance for more information).
2
T
U
S
S. Oil drain plug T. Oil fill plug U. Sight glass
BASIC ELEMENTS OF AN ENGINE
Refer to the Engine Owner's Manual for location and operation of engine controls.
NOTICE: The engine is shipped without oil. Before starting engine, add the oil
provided. Damage to the engine will occur if the engine is run without oil, this
damage will not be covered under warranty.
PRESSURE WASHER TERMINOLOGY
PSI: Pounds per Square Inch. The unit of measure for water pressure. Also used
for air pressure, hydraulic pressure, etc. Operating at pressures exceeding the
maximum rating could result in damage to the unit and/or severe personal injury.
GPM: Gallons per Minute. The unit of measure for the flow rate of water.
CU: Cleaning Units. GPM multiplied by PSI equals CU.
Pressure Wand Assembly: This refers to the gun, wand and nozzle.
Pump: The pump moves the water through the system and delivers it to the
pressure wand assembly. The nozzle creates the pressure.
Bypass Mode: Allows water to re-circulate within the pump when the gun trigger is
not pulled. This feature allows the operator to release the trigger gun and reposition
themselves without having to turn the engine off in between cleaning actions.
NOTICE: Allowing the unit to run for more than two minutes without the gun
trigger being pulled could cause overheating and damage to the pump. Do not let
the pressure washer run for more than two minutes in Bypass Mode. Turn off the
engine and relieve the pressure in the gun during these extended situations.
Thermal Relief Valve: When the temperature inside the pump rises too high, this
valve will open and release a gush of water in an effort to lower the temperature
inside the pump. The valve will then close.
Pressure Relief Valve: The water heater coils are designed to operate safely
at normal working pressure. The safety pressure relief valve prevents over
pressurization of the high pressure system. Do not modify the pressure relief valve
in anyway.

11
High Pressure Pump Oil: The preferred oil is SIMPSON®Premium Pump
Crankcase Oil. If this oil is not available, an SAE 15W-40 oil may be used. Change
the pump oil after the first 50hours of operation and every 100 hours thereafter, or
every 3 months.
Gasoline Engine Oil:
Check engine oil level before each use. Refer to the Engine
Owner's Manual
for correct procedure.
12V DC Battery: The 12V DC battery operates the engine's electrical start system,
after the engine is started the system will charge the battery and operate the burner.
The 12V battery will need to be replaced regularly to ensure consistent performance.
Recommended battery size: Group 24 battery
Burner Assembly: A device used to change fuel to heat energy. It is used to heat
the water in the coil assembly and is designed to use a NO. #2 diesel fuel.
BTU (British Thermal Unit): The amount of time it takes to raise the temperature
of one pound of water by one degree Fahrenheit.
Temperature Control: The burner system is equipped with an adjustable
temperature control. See Specification Insert for maximum temperature for each
unit. Do not set thermostat above 195°F. The burner will shut off if insufficient water
flow through the burner's heater coil causes the outlet water temperature to be
excessive.
Back Flow Preventer: Prevents backflow into a potable water system.
WARNING: To reduce the possibility of contamination always protect
against backflow when connected to a potable water system
Pressure Switch: A switch which uses a pressure activated plunger to activate a
microswitch, used to control the fuel solenoid in the burner system.
Flow Switch: A switch which responds to changes in water flow, water flow
moves a magnet which ativates a reed or microswitch to control voltage to the fuel
solenoid in the burner system.
Chemical Injection System: Mixes cleaners or cleaning solvents with the water to
improve cleaning effectiveness.
High Pressure Hose: Only use a wire braid hose rated for the output pressure and
temperature of the high pressure pump. See Specification Insert for the maximum
temperature. Additional hose lengths can be added with quick twist couplers with
a minimal loss in pressure of about .5 PSI per foot. Always inspect hoses for wear
and replace if necessary. Avoid kinking or running over the hose to extend the
hoselife.
Hour meter: The analog hour meter operates whenever the engine is running and
keeps track of how many hours the unit has been used.
Water Supply: The minimum requirements for a water supply are 20 psi and 5
Water Supply: The minimum requirements for a water supply are 20 psi at twice
the stated water volume for the machine. If your water source is a well, the garden
hose length can only be 30ft. (9m) maximum.
EVAP canister: Collects fuel vapors and later purges them so they burn in the
combustion process.

12
OPERATION
PRESSURE WASHER OPERATING FEATURES
IMPORTANT: Become familiar with these features before operating this
pressure washer.
PRESSURE ADJUSTMENTS
The pressure setting is preset at the factory to achieve optimum pressure and
cleaning. If you need to lower the pressure, it can be accomplished by these meth-
ods.
1.
Back away from the surface to be cleaned. The further away you are, the less
the pressure will be on the surface to be cleaned.
2. This pressure washer is equipped with an additional feature that allows the
pressure setting to be adjusted.
a. To lower the pressure, turn the unloader control knob (N) (located under the hot
water tank) counterclockwise to the desired pressure.
b. To return the pump pressure to the factory setting, turn the unloader control
knob (N) (located under the hot water tank) clockwise until it stops.
NOTICE: DO NOT overtighten the pressure control knob, if overtightened the knob
COULD break and result in immediate loss of water pressure and costly repairs to
the unit.
HOW TO USE SPRAY WAND
The nozzles for the spray wand are stored in the nozzle holder on the panel assembly.
Colors on the panel identify nozzle location and spray pattern. Refer to the following
chart to choose the correct nozzle for the job to be performed.
CHANGING NOZZLES ON SPRAY WAND (FIG. 3)
DANGER: Risk of fluid injection. Do not direct discharge stream toward
persons, unprotected skin, eyes or any pets or animals. Serious injury will
occur.
WARNING: Flying objects could cause risk of serious injury. Do not
attempt to change nozzles while pressure washer is running. Turn engine off
before changing nozzles.
1. Pull quick-connect coupler (AA) back and insert nozzle (I). 3
I
AA
2. Release quick-connect coupler and twist nozzle to make
sure it is secure in coupler.
WARNING: Flying object could cause risk of serious
injury. Ensure nozzle is completely inserted in quick-
connect socket and quick-connect collar is fully engaged
(forward) before squeezing gun trigger.

13
NOZZLE COLOR SPRAY PATTERN USES SURFACES*
Red
0˚ powerful pinpoint
for spot cleaning
of hard, unpainted
surfaces or for
high reach areas
unpainted metal
or concrete;
DO NOT use on wood
Yellow
15˚ intense cleaning
of unpainted
hard surfaces
grills, driveways, concrete
or brick walkways,
unpainted brick or stucco
Green
25˚ standard cleaning
nozzle for most
applications
yard tools, sidewalks,
lawn furniture, unpainted
siding, stucco, gutters
and eaves, concrete,
brick surfaces
White
40˚ cleaning of
painted or delicate
surfaces
auto/RV, marine, wood,
painted brick and stucco,
vinyl, painted siding
Black
low pressure applies cleaning
solutions
Low pressure
spray is safe on all
surfaces. Always verify
compatibility of cleaning
solution prior to use.
*NOTICE: The high pressure 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.
HOW TO APPLY CHEMICALS/CLEANING SOLVENTS (FIG. 4)
Applying chemicals or cleaning solvents is a low pressure operation. NOTE: Use
only soaps and chemicals designed for pressure washer use. Do not use bleach.
To Apply Chemicals:
1.
Ensure chemical siphon hose (M, Figure 4) is attached to
4
M
barbed fitting location near high pressure hose connection
of pump as shown.
2. Place the end of chemical siphon hose with filter on it into
container holding chemical/cleaning solution.
3. Install low pressure (black) nozzle into quick connect fitting
of spray wand, see
How To Use Spray Wand paragraph
in this section.
4. After use of chemicals, place chemical siphon hose into container of clean water
and draw clean water through chemical injection system to rinse system thoroughly.
If chemicals remain in the pump, it could be damaged. Pumps damaged due to
chemical residue will not be covered under warranty.

14
STARTING
WARNING: Do not operate this unit until you read this instruction manual
and the engine instruction manual for safety, operation and maintenance
instructions.
DANGER: Risk of fluid injection and laceration. When using the high
pressure setting, DO NOT allow the high pressure spray to come in contact
with unprotected skin, eyes, or with any pets or animals. Serious injury will
occur.
• Your washer operates at fluid pressures and velocities high enough to penetrate
human and animal flesh, which could result in amputation or other serious injury.
Leaks caused by loose fittings or worn or damaged hoses can result in injection
injuries. DO NOT TREAT FLUID INJECTION AS A SIMPLE CUT! See a physician
immediately!
DANGER: Carbon Monoxide. Using an engine indoors can kill you in
minutes. Engine exhaust contains high levels of carbon monoxide (CO), a
poisonous gas you cannot see or smell. You may be breathing CO even if you
do not smell engine exhaust.
• Breathing exhaust fumes will cause serious injury or death! Engine exhaust
contains carbon monoxide, an odorless and deadly gas.
• Operate pressure washer in a well-ventilated area. Avoid enclosed areas
such as garages, basements, etc.
• Never operate unit in or near a location occupied by humans or animals.
WARNING: Risk of Fire, Asphyxiation and Burn. Never fill fuel tank when
engine is running or hot. Do not smoke when filling fuel tank.
• Never fill fuel tank completely. Fill tank to 1/2" (12.7 mm) below bottom of filler
neck to provide space for fuel expansion. Wipe any fuel spillage from engine and
equipment before starting engine.
• DO NOT let hoses come in contact with very hot engine muffler during or
immediately after use of your pressure washer. Damage to hoses from contact with
hot engine surfaces will NOT be covered by warranty.
NOTICE: Risk of property damage. Never pull water supply hose to move pressure
washer. This could damage hose and/or pump inlet.
• DO NOT use hot water, use cold water only.
• Never turn water supply off while pressure washer engine is running or damage to
pump will result.
• DO NOT stop spraying water for more than two minutes at a time. Pump operates
in bypass mode when spray gun trigger is not pressed. If pump is left in bypass
mode for more than two minutes internal components of the pump can be
damaged.
If you do not understand these precautions, please contact our customer service
department at 1-844-375-7577.
Before Each Start Up (FIG. 1, 5, 6)
1. In a well-ventilated outdoor area, add fresh, high-quality, unleaded gasoline with
a pump octane rating of 86 or higher. Do not overfill. Wipe up spilled fuel before
starting the engine. Refer to
Engine Owner's Manual for correct procedure.
NOTICE: Use of fuels with greater than 10% ethanol are
not approved for use in this product per EPA regulations
and will damage the unit and void thewarranty.
2.
Check engine oil level. Refer to the Engine Owner's Manual for correctprocedure.

15
3. Check pump oil level. The oil level should come to the dot in the middle of the sight
glass (U, Fig 2).
4.
In a well-ventilated outdoor area, add fresh, high-quality #2 diesel fuel to the burner
fuel tank fill.
Refer to the Specification Insert for the correct fuel to be used in
the burner.
5.
Visually inspect all electrical components, hoses, nozzles and guns to assure they
are in good condition. If replacements are necessary they must be rated to withstand
the machines operating pressure and temperatures. See
SpecificationInsert.
6.
Connect the water hose to the cold water source. Turn the water source on to
remove all air from the hose. When a steady stream of water is present, turn
the water source off.
NOTE: Use a 5/8" (15.9 mm) or 3/4" (19.0 mm) good
quality water hose of minimal length. NOTE: Water source pressure must be
20–60psi to ensure proper operation.
WARNING: To reduce the possibility of contamination always protect against
backflow when connected to a potable water system.
7.
Verify the filter screen (BB) is in water inlet on the machine.
BB
5
NOTE: Convex side faces out. Connect the cold water
source to pump inlet (L).
NOTE: Failure to use machine
without inlet screen filter installed may void warranty.
8. Connect high pressure spray wand (P) to gun (Q). Tighten
securely.
Refer to Spray Wand Nozzles to select the
correct quick connect nozzle for the task being performed.
9. Attach high pressure hose (S) to high pressure spray gun
(Q).
Connect the other end of the high-pressure hose to high-pressure hot water
outlet on the machine.
10. If applying a chemical or cleaning solution, refer to Chemicals and
CleaningSolvents.
11.
Turn the water source on. Remove all air from the pump and high pressure hose
by depressing trigger until a steady stream of water is present.
NOTICE: Risk of property damage. Failure to do so could cause damage to
thepump.
12.
Make sure ALL controls are in the OFF position.
13. Start engine. Refer to the engine instruction manual for correct procedure.
IMPORTANT: Prior to starting, refer to your engine manual for proper
starting procedure.
WARNING: Risk of unsafe operation. If engine does not start after two pulls,
squeeze trigger of gun to relieve pump pressure. Pull starter cord slowly until resis-
tance is felt. Then pull cord rapidly to avoid kickback and prevent hand or arm injury.
NOTE: If the oil level in the engine is low, the engine will not start. If the engine does
not start, check the oil level and add oil as needed.
14.
If hot water cleaning is desired, release the trigger on the gun and place the burner
On/Off switch (G) in the ONposition.
WARNING: Risk of burns. The surfaces around the burner exhaust and the
discharged exhaust are very hot. Keep away from this area. DO NOT allow hoses
to come in contact with the very hot burner exhaust area.
WARNING: Burner will shut off when the trigger is released. DO NOT use the
pressure washer if the burner fails to shut off when the trigger is released.
15.
Depress trigger on gun to start water flow and the burner.

16
WARNING: Risk of unsafe operation. Stand on a stable surface and grip gun/
wand firmly with both hands. Expect the gun to kickback when triggered.
NOTICE: Allowing the unit to run for more than two minutes without the gun
trigger being pulled could cause overheating and damage to the pump. Do not let
the pressure washer run for more than two minutes in Bypass Mode. Turn off the
engine and relieve the pressure in the gun during these extended situations.
16.
Release trigger to stop water flow and turn the burner off.
17. Adjust the pressure if needed. Refer to Pressure Adjustments paragraph for the
correct procedures.
DANGER: Risk of injury from spray. Engage the trigger lock
6
CC
(CC) when gun is not in use to prevent accidental spraying.
SHUTTING DOWN (FIG. 1)
1. Place the burner on/off switch (G) in the OFF position.
2. Depress trigger on gun and allow water to run until the
spray wand is no longer hot to the touch.
3. If chemicals were applied, place the chemical siphon hose
into a container of clean water and draw clean water through chemical injection
system to rinse system thoroughly.
NOTICE: Risk of property damage. Failure to rinse the chemical system can cause
damage to the high-pressure pump or the high-pressure water system.
4.
Turn engine off. Refer to the engine instruction manual for correct procedure.
NOTICE: Risk of property damage. NEVER turn water supply off while pressure
washer engine is running or damage to pump will result.
5.
Turn water source off.
6. Pull trigger on spray gun to relieve any water pressure in hose or spray gun.
7. Refer to Storage for proper storage procedures.
MAINTENANCE
Your pressure washer has been produced with the highest quality materials and
craftsmanship, as the owner you have certain responsibilities for the correct care
of the equipment. Attention to regular preventative maintenance procedures will
assist in preserving the performance of your equipment.
Contact your local service provider for maintenance. A small investment in
preventative maintenance will add many hours to the life of your pressure washer.
Perform maintenance more often under severe conditions. Do not spray high-
pressure water onto the machine. Not all maintenance items apply to all machines.
MAINTENANCE SCHEDULE**
Engine Oil Inspect Daily
Change After first 10 hours then every 50 hours especially in
high ambient temperatures
Filter Every 100 hours
Air Cleaner Inspect Every 25 hours
Clean Every 3 months
Diesel Engine Coolant Check daily (maximum 50% antifreeze)
Battery Level Check monthly 12V DC Burner Systems: Replace battery every 2
years

17
Engine Fuel Filter 500 hours or 6 months
Spark Plug Maintenance 500 hours or 6 months
Clean Fuel Tank(s) Annually
Replace Fuel Lines Annually
Pump Oil Inspect Daily
Change After first 25 hours, then every 3 months or 150 hours
Axial pumps come filled with synthetic oil, which does not require changing
Replace Burner Fuel Filter Every 6 months (More often if fuel quality is poor)
Remove Burner Soot Annually
Burner Adjustment/Cleaning Annually
De-scale Coil Annually (More often if required)
Replace Spray Nozzle Every 6 months
Replace Quick Connects Annually (More often if required)
Clean Water Screen/Filter Weekly
Clean Float/Supply Tank Every 6 months
Replace HP Hose Annually (More often if required)
Belts Tighten Every 6 months
Inspect/Replace Annually
Trailer Tires/Bearings Monthly (Check tires for condition, tighten lug nuts, grease & check bearings)
MAINTENANCE INFORMATION
DESCRIPTION OIL TYPE CAPACITY
Gas Engine SAE 10W 30 motor oil ** .63 to 3 qt.
Diesel Engine SAE 15W 40 OR ISO 100 ** 1.7- 3.3 qt.
Pump, Cat SAE 15W 40 OR ISO 100 11 – 42 oz.
Pump, Comet SAE 15W 40 OR ISO 100 11 – 42 oz.
Pump, General SAE 15W 40 OR ISO 100 11 – 42 oz.
** Check the engine manufacturer’s service guide for additional maintenance items and specific high ambient temperature
oilselection.
CALIFORNIA PROP 65 WARNING
Detectable amounts of chemicals known to the State of California to cause cancer, birth defects or other reproductive harm
may be found in pressure washing equipment and accessories. California Health and Safety Code 25249.5
STORAGE
ENGINE
Consult the Engine Owner's Manual for manufacturer’s recommendations
forstorage.
PRESSURE WASHER
1. Drain all water from high-pressure hose.
2. With nozzle pointed down and the spray gun and wand in a vertical position,
squeeze trigger to drain all water from spray gun and wand.
3. Store chemical siphon hose so it is protected from damage.
CAUTION: Risk of personal injury. Avoid placing hands between handle and
frame when assembling to prevent pinching.
NOTICE: Risk of property damage. Always store and transport unit in an
uprightposition.

18
ACCESSORIES
DANGER: Risk of fluid injection. When using replacement spray wands or
guns with this pressure washer, DO NOT use a spray wand and/or spray gun/
wand combination that is shorter in length than what was provided with this
pressure washer as measured from the nozzle end of the wand to the gun
trigger.
NOTICE: The use of any other accessory not recommended for use with this tool
could be hazardous. Use only accessories rated equal to or greater than the rating
of the pressure washer.
SPECIFICATIONS
SERIES NUMBER 65105 65106
MAX PRESSURE 4000 PSI 4000 PSI
MAX FLOW 4 GPM 4 GPM
ENGINE Vanguard 13 HP Honda GX390-ES
ENGINE WARRANTY 3 Year Limited 3 Year Limited
CONTROLS /
SWITCHES
Rocker Back-Lit/
Pressure Switch
Rocker Back-Lit/
Pressure Switch
PUMP Comet ZWD4040G Comet ZWD4040G
PUMP WARRANTY 5 Year Limited
Consumer/
5 Year Limited
Commercial
5 Year Limited
Consumer/
5 Year Limited
Commercial
BURNER/COIL 16" Horizontal
Coil, 12VDC
16" Horizontal
Coil, 12VDC
POWER DRIVE Direct Direct
WATER SUPPLY Garden Feed Garden Feed
SOAP INJECTION Downstream Downstream
PRESSURE HOSE 3/8" x 50' Armor Hose 3/8" x 50' Armor Hose
NOZZLE 5 QC - 0°, 15°,
25°, 40°, Soap
5 QC - 0°, 15°,
25°, 40°, Soap
CONSTRUCTION 1 1/2" Round Tube
+ Formed Steel
1 1/2" Round Tube
+ Formed Steel
WEIGHT/DIMENSIONS 39.5" W x 24"D x 41"H 39.5" W x 24"D x 41"H
SERVICE INFORMATION
Do not return this product to your retailer. Please contact our customer service
department at 1-844-375-7577.

19
TROUBLESHOOTING GUIDE
Probable causes are listed with most likely cause first.
ALL Repairs should be made by qualified technicians only.
TROUBLESHOOTING GASOLINE/DIESEL ENGINES
Problem Probable Cause Remedy
Engine will not
start or crank
over.
Battery dead Where
applicable
Charge or replace battery, add electrolyte
if battery is new
Dirty Battery Contacts Clean connections
Battery cables
disconnected
Connect or replace damaged cables.
Engine, pump, or gearbox
is seized.
Identify, Replace or repair seized part.
Key switch, solenoid
or starter on engine
defective.
Repair or replace faulty component.
Pump is seized Replace pump or bearing.
Engine will not
start but will
crank over
Engine power switch is off
or defective.
Check engine power switch.
Low oil shut down is
activated.
Add oil to engine, check more frequently.
Low on fuel. Fill with the appropriate fuel, bleed injector
pump on diesel engines.
Fuel filter is clogged. Replace or clean fuel filter, bleed injector
pump on diesel engines.
Engine flooded or starved. Choke only as required (not applicable to
diesels).
Air Filter is dirty Clean or replace air filter
Old or dirty fuel Drain and replace with new fuel
Engine bogs
down under load,
whenever spray
gun is triggered.
Engine needs to be
repaired or replaced.
See engine manual or engine dealer.
Operating in high
elevation.
Lower the pressure on the unit and check
for correct engine speed (RPM).
Incorrect nozzle in lance Replace with correct nozzle size
Unloader valve improperly
adjusted.
Adjust unloader valve
Carbon deposits on
cylinder head.
Remove head and clean off deposits.
TROUBLESHOOTING PRESSURE ISSUES
Problem Probable Cause Remedy
Trigger gun leaks
or will not shut
off.
Debris in gun valve
assembly.
Clean valve assembly or replace gun.
Pump runs but
there is no spray
pressure.
Water turned off. Turn water on.
Nozzle is plugged. Clean or replace with proper size.
Inlet chemical injection
valve is open, without the
end of the pickup tube
inserted into detergent.
(upstream injection
systems only)
Close soap valve or submerge detergent
pickup tube into solution.
Coil on hot water
machines is obstructed.
Clean obstruction or scale deposits from
coil with coil cleaner.
Pump dry, needs to be
primed.
Crack open fitting on the high pressure
outlet of the pump until water flows out.

20
TROUBLESHOOTING PRESSURE ISSUES
Problem Probable Cause Remedy
Pump runs but
has low spray
pressure.
Nozzle not installed Install proper sized nozzle.
Dual wand valve is open. Dual wand valve must be closed and high
pressure nozzle installed.
Leaky discharge hose or
quick coupler.
Replace hose, quick coupler, or O-ring in
the quick coupler.
Inlet strainer clogged. Clean and check more frequently.
Worn or wrong size
nozzle.
Replace nozzle of proper size.
Belt slippage Tighten or replace with correct belt.
Unloader valve worn or
improperly adjusted.
Install pressure gauge on pump head
to adjust pressure. Check valve seat on
Unloader.
Air leak in inlet plumbing. Reseal fittings and inspect inlet hoses for
air leaks.
Pump runs but
there is erratic,
fluctuating
pressure.
Inadequate incoming
water supply.
Increase water supply flow.
Stuck inlet or discharge
valves.
Clean out or replace worn valves
Restricted inlet or air
entering the inlet plumbing
on the pump.
Check fittings and hose for air tight seal,
clean inlet strainer screen.
Leaking H.P. seals. Replace seals.
Leaking L.P. seals. Pressure feed the pump and replace LP
seals if water leaks from the pump head.
Excessive
crankshaft play
or loud, knocking
noise in pump.
Broken or worn bearing
or connecting rod in
crankcase.
Replace pump or bearing.
Oil leaking from
pump.
Loose drain plug or
damaged seal.
Locate point of oil leakage and replace
damaged O-ring or seal.
Leaking crankshaft oil seal Replace seal
Leaking Oil Sight Glass
seal
Replace seal
Leaking Piston Oil Seal Replace seals. Install correct amount of oil
in pump
Inlet injection
will not siphon
chemical.
Check valve in strainer
clogged.
Clean or replace. Rinse after each use.
Chemical valve not open
or clogged.
Open chemical valve or clean.
Strainer not submerged in
solution.
Submerge strainer and replenish chemical.
Detergent hose cut or
kinked
Inspect hose, replace as necessary.
Water is emitted
from the
chemical pickup
tube
Check valve
malfunctioning.
Repair or replace check valve.