Generac Portable Products 2500PSI User manual

Electric Start High Pressure Washer
Owner’s Manual
This is the safety alert symbol. It is used to alert you to potential personal injury hazards.
Obey all safety messages that follow this symbol to avoid possible injury or death.
2500PSI
Model No. 1443-0 (2,500 PSI High Pressure Washer) Manual No. B5786 Revision 2 (8/14/2000)
Visit our Generac website: www.generac-portables.com
Problems?
Questions?
Before taking your unit
back to the store,
call the pressure washer
helpline at
1-800-270-1408
M-F 8-5 CT

Generac Portable Products 2,500 PSI High Pressure Washer
2
EQUIPMENT
DESCRIPTION
CONGRATULATIONS on your purchase of a
GENERAC high pressure washer. It has been designed,
engineered and manufactured to give you the best possible
dependability and performance.
This manual contains information for an electric start high
pressure washer that operates at 2,500 PSI at a flow rate
of 3.0 gallons per minute. This high quality
professional/commercial system features large 10” wheels,
a pump equipped with an automatic cool down system, a
chemical injection system, quick connect nozzles, safety
goggles, a heavy duty 25’ hose, and more.
Please read and retain this manual. The instructions will
enable you to assemble your unit, and maintain your high
pressure washer properly.
Every effort has been made to ensure that the information
in this manual is both accurate and current. However,
Generac reserves the right to change, alter or otherwise
improve the product and its documentation at any time
without prior notice.
Should you experience any problem you cannot easily fix,
call the pressure washer helpline at 1-800-270-1408.
CUSTOMER
RESPONSIBILITIES
• Read and observe the safety rules.
• Follow regular schedule in maintaining, caring for and
using your high pressure washer.
• For off-season storage, review “Preparing The Unit For
Storage” on page 16.
SAFETY RULES
CAUTION! When setting up, transporting,
adjusting or making repairs to your high pressure
washer, always disconnect the spark plug wire from
the spark plug and place the wire where it cannot
contact spark plug.
DANGER! Engine exhaust contain DEADLY
carbon monoxide gas. This dangerous gas, if
breathed in sufficient concentrations, can cause
unconsciousness or even death. Operate this
equipment only in the open air where adequate
ventilation is available.
DANGER! Gasoline is highly FLAMMABLE and its
vapors are EXPLOSIVE. Do Not permit smoking,
open flames, sparks or heat in the vicinity while
handling gasoline. Avoid spilling gasoline on a hot
engine. Allow unit to cool for 2 minutes before
refueling. Comply with all laws regulating storage
and handling of gasoline.
Read this manual carefully and become familiar
with your pressure washer. Know its applications,
its limitations, and any hazards involved.
• Locate this pressure washer in areas away from
combustible materials, combustible fumes or dust.
• The high pressure equipment is designed to be used with
Generac authorized parts ONLY. If you use this
equipment with parts that do not comply with minimum
specifications, the user assumes all risks and liabilities.
•Do Not allow CHILDREN to operate the pressure
washer at any time.
• Always be certain the spray gun, nozzles and accessories
are correctly attached.
•Do Not wear loose clothing, jewelry or anything that
may be caught in the starter or other rotating parts.
The engine exhaust from this product
contains chemicals known to the State
of California to cause cancer, birth
defects, or other reproductive harm.
WARNING:

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• Before starting the pressure washer in cold weather,
check all parts of the equipment and be sure ice has not
formed there.
• Units with broken or missing parts, or without
protective housing or covers, should Never be
operated.
• Use a respirator or mask whenever there is a chance
that vapors may be inhaled. Read all instructions with
mask so you are certain the mask will provide the
necessary protection against inhaling harmful vapors.
• Always wear eye protection when you use this
equipment or when you are in the vicinity where the
equipment is in use.
• The cleaning area should have adequate slopes and
drainage to reduce the possibility of a fall due to slippery
surfaces.
•Do Not by–pass any safety device on this machine.
• Operate and store this unit on a stable surface.
• Some chemicals or detergents may be harmful if inhaled
or ingested, causing severe nausea, fainting or poisoning.
The harmful elements may cause property damage or
severe injury.
•Do Not spray flammable liquids.
•Never allow any part of the body to come in contact
with the fluid stream. Do Not come in contact with a
fluid stream created by leaks in high pressure hose.
• High pressure spray can cause paint chips or other
particles to become airborne.
•Do Not operate the pressure washer above the rated
pressure.
• High pressure spray may damage fragile items including
glass. Do Not point spray gun at glass when in the jet
spray mode.
•Do Not secure the spray gun in the (open) position.
• Keep the hose connected to machine or the spray gun
while the system is pressurized. Disconnecting the hose
while the unit is pressurized is dangerous.
• Keep water spray away from electric wiring or fatal
electric shock may result.
•Never use a spray gun which does not have a trigger
lock or trigger guard in place and in working order.
•Never aim the spray gun at people, animals or plants.
The high pressure stream of water that this equipment
produces can pierce skin and its underlying tissues,
leading to serious injury and possible amputation.
• Hold the spray gun firmly in your hand before you start
the unit. Failure to do so could result in an injury from a
whipping spray gun. Do Not leave the spray gun
unattended while the machine is running.
•Never move the machine by pulling on the high pressure
hose. Use the handle provided on the unit.
• High pressure hose can develop leaks from wear, kinking,
abuse, etc. Water spraying from a leak is capable of
injecting material into skin. Inspect hose each time before
using it. Check all hoses for cuts, leaks, abrasions or
bulging of cover, or damage or movement of couplings. If
any of these conditions exist, replace hose immediately.
Never repair high pressure hose. Replace it with
another hose that exceeds maximum pressure rating of
your unit.
• Check the fuel system for leaks or signs of deterioration,
such as chafed or spongy hose, loose or missing clamps,
or damaged tank or cap. Correct all defects before
operating the pressure washer.
• Operate engine ONLY at governed speed. Running the
engine at excessive speeds increases the hazard of
personal injury. Do Not tamper with parts which may
increase or decrease the governed speed.
• The muffler and engine heat up during operation and
remain hot immediately after shutting it down. Avoid
contact with a hot muffler or engine as you could be
severely burned.
• The muffler and air cleaner must be installed and in good
condition before operating the pressure washer. These
components act as spark arresters if the engine backfires.
In the State of California a spark arrester is required by law
(Section 4442 of the California Public Resources Code).
Other states may have similar laws. Federal laws apply on
federal lands.
NOTE: If you equip the muffler with a spark arrester, it
must be maintained in effective working order. You can
order a spark arrester through your authorized Briggs and
Stratton service dealer.

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KNOW YOUR PRESSURE WASHER
Read this owner’s manual and safety rules before operating your high pressure washer.
Compare the illustrations with your high pressure washer to familiarize yourself with the locations of various controls and
adjustments. Save this manual for future reference.
Automatic Cool Down System — Cycles water through
pump when water reaches 140°-145°F. Warm water will
discharge from pump onto ground. This system prevents
internal pump damage.
Battery Charger Jack — Plug battery charger into jack to
keep the battery charged and ready for use.
Detergent Pick-Up Tube and Filter — Used to siphon
detergent from chemical bottle to low pressure water stream.
Gas Tank — Fill tank with regular unleaded gasoline. Always
leave room for fuel expansion.
High Pressure Hose — Connect one end to the water
pump and the other end to the spray gun.
Hose Reel — Used for storing hose while unit is not in use.
Hose must be detached from unit and spray gun before
storage.
Nozzle Extension with Quick Connect — Allows you to
switch between four different spray nozzles.
Oil Fill/Dipstick — Used to check and fill with oil here.
Pressure Control Knob — Varies the pressure of the high
pressure spray.
Pump — Develops high pressure.
Push-Button Start Switch — Push button for easy engine
starting.
Recoil Starter — Use for starting the engine manually.
Safety Goggles — Always use the enclosed goggles or other
eye protection when running your pressure washer.
Spray Gun — Controls the application of water onto
cleaning surface with trigger device. Includes safety latch.
Spray Nozzles — Chemical injection, 0°, 15°,and 40°: for
various cleaning applications.
Water Inlet — Connect garden hose here.
Spray Gun
Nozzle Extension with
Quick Connect
High Pressure Hose
Recoil Starter
Safety Goggles
Gas Tank
Water Inlet
Pressure Control Knob
Pump equipped with
Automatic Cool Down System
Detergent Pick-Up
Tube and Filter
Oil Fill/Dipstick
Spray Nozzles
Hose Reel
Battery Charger Jack
Push-Button Start Switch

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Read entire owner’s manual before you attempt to
assemble or operate your new pressure washer.
REMOVE PRESSURE
WASHER FROM
CARTON
• Remove the handle, hose reel box and parts box
included with pressure washer.
• Slice two corners at the end of carton from top to
bottom so the panel can be folded down flat, then
remove all packing material.
• Roll pressure washer out of carton.
Carton Contents
Items in the carton include:
• Main Unit
• Handle
• Hose Reel box containing:
• Hose Reel
• Parts bag containing clamps, hose clip, handle,
hose reel mounting hardware
• Parts box containing:
• Bag with 4 multi–colored nozzles
• Safety goggles
• High pressure hose
• Nozzle cleaning kit
• Nozzle extension with Quick–Connect fitting
• Engine oil
• O–Ring maintenance kit
• Owner’s manual
• Engine manual
• Handle hardware and detergent hose clip
• Spray gun
• Battery charger
If any of the above parts are missing or damaged, call the
pressure washer helpline at 1–800–270–1408.
PREPARING PRESSURE
WASHER FOR USE
If you have any problems with the assembly of your
pressure washer or if parts are missing or damaged, call the
pressure washer helpline at 1-800-270-1408.
To prepare your pressure washer for operation, you
will need to perform these tasks:
• Carefully attach the handle to the unit.
• Attach RED battery wire to battery.
• Assemble hose reel to handle.
• Attach detergent hose clip to handle.
• Add oil to the engine crankcase.
• Add fuel to the fuel tank.
• Connect the high pressure hose to the spray gun and the
pump.
• Connect the water supply to the pump.
Attach Handle to Pressure Washer
Carefully attach handle to unit as follows:
• Slowly tip the pressure washer forward and let it gently
rest on its front bumper, as shown in Figure 1.
• Slowly insert the handle through the holes in the base,
being careful to avoid touching the wires and other
electrical components.
• Align the holes on the handle with the holes on the base.
• Insert the carriage bolts to hold the handle in place.
Figure 1 — Attach Handle to Pressure Washer

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• Secure handle to the base using the four flange nuts.
Tighten the flange nuts with a 13mm wrench. Use
caution when tightening to avoid contact with wires and
other electrical components.
• Attach the RED wire to the POSITIVE battery terminal
(see Figure 2) by aligning the yellow connector with the
terminal and pressing on firmly.
• Slowly tip the pressure washer back in place and insert
the multi–colored nozzles in the spaces provided in the
handle.
• From the rear of the unit, attach siphoning tube clip onto
the right side of the handle with the self tapping screw.
Position the self tapping screw into the pre-drilled hole
just underneath the nozzle holder frame.
• Insert the detergent siphoning tube into the clip you just
installed (Figure 3).
NOTE: When originally installed, this spring clip may be
rather stiff. Stretch the clip opening several times before
use so that the siphon filter can be more easily stored.
Assembling Hose Reel
IMPORTANT: You must take the hose off the reel when
operating your high pressure washer. The reel is for hose
storage purposes only.
• As shown in Figure 4, attach the handle to the reel with
locknuts, flat washers, and bolts. Please note that the
bolts are inserted with their heads inside the hose reel.
• As shown in Figure 5 (viewed from the front of the unit),
secure the hose reel to the handle with locknuts, clamps,
and bolts.
• Attach the spring clip with a black self tapping screw in
the hole provided on the clamp.
NOTE: There may be some hardware included with the
hose reel kit that is not used on this model.
Figure 2 — Attach RED Wire to Battery
RED Wire
Battery
POSITIVE Terminal
Do Not Detach
Figure 4 — Attach Handle to Reel
Locknut
Flat washer
Handle
Bolt
Screw
Hose Clip
Clamp
Bolt
Locknut
Hose reel
Figure 5 — Install Hose Reel on Handle
Figure 3 — Insert Detergent Siphoning Tube into Clip
Tube Clip

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Add Engine Oil
IMPORTANT: Any attempt to crank or start the engine
before it has been properly serviced with the
recommended oil may result in an engine failure.
• Place pressure washer on a level surface.
• Refer to the engine owners manual to add recommended
oil to engine.
NOTE: Check oil often during engine break–in. Refer to
engine owner’s manual for recommendations.
NOTE: The pump is pre-lubricated and sealed, requiring
no additional lubrication for the life of the pump.
Add Gasoline
DANGER! Never fill fuel tank indoors. Never fill
fuel tank when engine is running or hot. Do Not
smoke when filling fuel tank.
WARNING! Never fill fuel tank completely full.
Provide space for fuel expansion. Wipe away any
fuel spillage from engine and equipment before
starting.
• Use clean regular unleaded fuel and store in approved
clean covered containers. Use clean fill funnels. Never
use “stale” gasoline left over from last season or gasoline
stored for long periods.
• Clean the area around the fuel fill cap, and remove the
cap. Slowly fill tank to about 1/2” below the bottom of
the filler neck (Figure 6).
• Install the fuel cap and wipe up any spilled gasoline.
Connect Hose and Water Supply to
Pump
IMPORTANT: You must assemble the nozzle extension
to the spray gun and attach all hoses before you start the
engine. Starting engine without all hoses connected and
water supplied will damage the pump.
• Uncoil high pressure hose and attach quick connect end
of hose to the base of the spray gun (Figure 7). Pull
down on the collar of the quick connect, slide onto the
spray gun and let go of collar. Tug on hose to be sure of
a tight connection.
• Attach the other end of the high pressure hose to the
high pressure outlet on the pump (Figure 8). Pull down
on the collar of the quick connect, slide onto the pump
and let go of collar. Pull on hose to be sure of a tight
connection.
• Before you connect your garden hose to the water inlet,
inspect the inlet screen (Figure 9). Clean the screen if it
contains debris; replace it if it is damaged. DO NOT
RUN THE PRESSURE WASHER IF THE SCREEN IS
DAMAGED OR MISSING.
Figure 8 — Connect High Pressure Hose to Pump
Figure 7 — Connect High Pressure Hose to Spray Gun
Figure 6 — Add Gasoline to Fuel Tank

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• Run water through your garden hose for 30 seconds to
clean out any debris. Turn off water.
• Connect the garden hose to the water inlet. Tighten by
hand (Figure 9).
WARNING! There MUST be at least ten feet of
unrestricted garden hose between the pressure
washer inlet and any flow shut off device, such as a
‘Y’ shut-off connector or other convenience-type
water shut-off valve. Damage to pressure washer
resulting from disregarding this warning will not be
covered by the warranty.
• Turn ON the water and squeeze the trigger on the spray
gun to purge the pump system of air and impurities.
• Attach the nozzle extension to the spray gun. Tighten by
hand (Figure 10).
CHECKLIST BEFORE
STARTING ENGINE
Review the unit’s assembly to confirm you have performed
all of the following:
• Make sure the handle is in place and secure.
• Make sure the RED battery wire is connected.
• Check that all hose reel fasteners are tight.
• Check for properly tightened hose connections.
• Check to make sure that there are no kinks, cuts, or
damage to the high pressure hose.
• Check that oil has been added to the proper level in the
engine crankcase.
• Add the proper gasoline to fuel tank.
• Provide a proper water supply (not to exceed 140°F) at
an adequate flow.
• Be sure to read “Safety Rules” and “Preparing Pressure
Washer For Use” before using the pressure washer.
Inspect inlet screen.
Do Not use if
damaged, clean if dirty.
Figure 9 — Connect Garden Hose to Water Inlet.
Figure 10 — Connect Nozzle Extension to Spray Gun.

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HOW TO USE YOUR
PRESSURE WASHER
If you have any problems operating your pressure washer,
for assistance call the pressure washer helpline at
1-800-270-1408.
How to Start Your Engine
The best way to start your pressure washer for the first
time is to follow these instructions step-by-step. You may
also refer to your engine owner’s manual. This information
also applies after you have let the pressure washer sit idle
for at least a day.
CAUTION: Before starting the pressure washer,
be sure you are wearing adequate eye protection.
• Place the pressure washer in an area close enough to an
outside water source capable of supplying water at a
flow rate greater than 3.3 gallons per minute.
• Check that the high pressure hose is connected to the
spray gun and to the pump. See “Preparing Pressure
Washer for Use” for illustrations.
• Make sure unit is in a level position.
• Connect the garden hose to the water inlet on the
pressure washer pump. Turn on the water.
CAUTION: Do Not run the pump without the
water supply connected. Failure to do so will cause
damage the pump that is not warrantied.
• Squeeze the trigger on the spray gun until you have a
steady stream of water. This purges the pump of air and
impurities.
• Attach the nozzle extension to the spray gun. Tighten by
hand.
• Choose the nozzle you want to use and insert it into the
nozzle extension. See “How to Use the Nozzles” on
page 10.
• Engage the safety latch to the spray gun trigger
(Figure 11).
• Rotate the fuel shut-off valve to the “On” position (fully
counter-clockwise).
NOTE: Engine controls are shown below in Figure 12.
Safety Latch
Choke Lever Fuel Shut-off Valve
Throttle Lever
On/Off Switch
Recoil Starter (Backup)
Figure 12 - Engine Controls
Figure 11 — Spray Gun with Safety Latch Engaged

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• Move throttle lever to “Fast” position, shown as a
rabbit.
• Position the choke lever to the “Choke” position.
NOTE: For a warm engine, be sure the choke lever is in
the “Run” position.
• Push the On/Off switch to the “On” position.
•F
or electric start, press push-button start switch until
engine cranks and starts. Limit electric start cycles to 5
seconds of cranking per every 30 seconds to prolong life
of starter.
•F
or manual start, pull slowly on recoil handle until you
feel some resistance. Then pull rapidly to start engine.
Return handle slowly. Do Not let it “snap back” against
starter housing.
• If the choke was placed in the “Choke” position to start
the engine, slowly push it to the “Run” position as the
engine warms up enough to run smoothly.
• If the engine fails to start, review instructions given in the
engine owner’s manual.
How to Stop Your Pressure Washer
• Move throttle lever to “Slow” position.
• Push on/off switch to the “Off” position.
• Turn the fuel shut-off valve to the “Off” position.
•Squeeze trigger on the spray gun to relieve
pressure in the hose.
NOTE: A small amount of water will squirt out when you
release the pressure.
Battery Safety
NOTE: Battery is a sealed lead acid battery.
DANGER! If battery case cracks, Do Not permit
smoking, open flame, sparks or any other source of
heat around battery. Wear protective goggles,
rubber apron and rubber gloves when working
around battery. Battery electrolyte fluid is an
extremely caustic sulfuric acid solution that can
cause severe burns. If spill occurs, flush area with
clear water immediately.
How to Use Battery Charger
Use battery charger jack with the provided battery charger
to keep the starting battery charged and ready for use.
Battery charging should be done in a dry location, such as
inside a garage.
• Lift the flap to plug the charger into the unit’s “12V DC
Battery Charger” jack. Plug battery charger into a
120 Volt AC wall receptacle.
• Unplug the charger from the unit and the wall outlet
when pressure washer is being started and while it is in
operation.
• Keep this charger plugged in when pressure washer is
not in use to prolong battery life. The charger has a built
in float equalizer and will not overcharge the battery,
even when plugged in for an extended period of time.
IMPORTANT: See “Battery Maintenance” on page 15 for
additional information.
How to Use the Nozzles
DANGER! Never exchange nozzles without
locking the safety latch on the spray gun.
The quick–connect on the nozzle extension allows you to
switch between four different nozzles. The nozzles vary the
spray pattern, as shown in Figure 13.
To change nozzles:
• Engage the safety latch on the spray gun.
Use to apply
detergent
0°
15°
Red
40°
WhiteBlack
25°
Figure 13 - Nozzle Spray Patterns
Yellow

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• Pull back the collar on the quick–connect and pull the
current nozzle off. Store the nozzle in the space provided
on the control panel.
NOTE: For a more gentle rinse, select white 40° nozzle.
To scour the surface, select yellow 15° or red 0° nozzle. To
apply detergent, select black nozzle.
• Pull back on the collar, insert the new nozzle and release
the collar. Pull on the nozzle to make sure it is securely
in place.
• Located on the pump is a pressure control knob
(Figure 14). You can increase (decrease) the pressure of
the spray by turning the knob clockwise
(counterclockwise).
• For most effective cleaning, keep the spray nozzle
between 8 to 24 inches away from the cleaning surface. If
you get the spray nozzle too close, you may damage the
cleaning surface.
Cleaning and Applying Chemical
WARNING! You must attach all hoses before
you start the engine. Starting the engine without all
the hoses connected and without the water turned
ON will damage the pump.
IMPORTANT: Use soaps designed specifically for
pressure washers. Household detergents could damage
the pump.
To apply detergent follow these steps:
• Review the use of the nozzles.
• Prepare detergent solution as required by the job.
• Hang the detergent solution container on the hook at
the rear of the pressure washer.
• Place the small filter of the detergent injection tube into
the detergent container.
CAUTION! Keep the detergent siphon tube from
coming in contact with the hot muffler. This will
damage the detergent injection tube. When
inserting the filter into a detergent bottle, route the
tube so as to keep it from inadvertently contacting
the hot muffler.
• Make sure the black nozzle is installed on the nozzle
extension.
NOTE: Detergent cannot be applied with the high
pressure nozzles (White, Yellow, or Red).
• Make sure the garden hose is connected to the water
inlet. Check that high pressure hose is connected to
spray gun and pump, then start engine.
• Apply the detergent to a dry surface, starting at lower
portion of area to be washed and work upward, using
long, even, overlapping strokes. Do Not allow the
detergent to dry on. Allowing detergent to dry on
surface may cause streaking.
• Allow the detergent to soak between 3–5 minutes before
washing and rinsing. Reapply as needed to prevent
surface from drying.
Pressure Washer Rinsing
WARNING! Be extremely careful if you must use
the pressure washer from a ladder, scaffolding or
any other relatively unstable location. Pressure in a
running washer builds as you climb. When you press
the trigger, the recoil from the initial spray could
cause you to fall. The high pressure spray could also
cause you to fall if you are too close to the cleaning
surface.
After you have applied detergent, scour the surface
and rinse it clean as follows:
• Apply safety latch to spray gun.
• Remove the black nozzle from the nozzle extension.
• Select and install the desired high pressure nozzle, as
described in “How to Use the Nozzles”.
• Keep the spray gun a safe distance from the area you
plan to spray.
• Disengage the safety latch on the spray gun.
Pressure
Control
Knob
Figure 14 — Pressure Control Knob

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• Apply a high pressure spray to an small area and then
check the surface for damage. If no damage is found, you
can assume it is okay to continue cleaning.
• Start at the top of the area to be rinsed, working down
with same overlapping strokes used for cleaning.
• The use of a brush may be helpful on some hard to clean
surfaces.
Automatic Cool Down System
(Thermal Relief)
If you run the engine on your pressure washer for
3-5 minutes without pressing the trigger on the spray gun,
circulating water in the pump can reach a temperature
between 140–145°F. When the water reaches this
temperature, the automatic cool down system
engages and cools the pump by discharging the
warm water onto the ground. This system prevents
internal damage to the pump. Once the pump has
cooled, it will stop discharging.
NOTE: This discharge is not a leak. Do Not return the
pressure washer for this reason.
How to Use the Hose Reel
Your pressure washer is equipped with a hose reel that is
designed to store your hose when the unit is not in use.
After each use:
• Disconnect hose from spray gun and high pressure outlet
on pump.
• Drain water from hose.
High Pressure Hose Storage
The factory-recommended way to store the high pressure
hose is to roll it onto the reel in a counter-clockwise
manner, as follows:
• Insert the male end of the hose through the hole in the
hose reel hub, as shown in Figure 15.
• While guiding the hose with your left hand, grasp the
hose reel handle and turn the reel counter-clockwise.
Apply sufficient tension on the hose to force it to coil
tightly against the hose reel hub.
• When the entire hose has been reeled, the loose hose
end is clipped into the hose clip, as shown in Figure 16.
Figure 15 — Coil Hose onto Reel
Figure 16 — Push End of Hose into Clip
Spring
Tension
Knob

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Adjustable Hose Reel Spring Tension
The hose reel is provided with a spring tension adjustment
knob (Figure 15).
Although the operator can loosen or tighten the knob to
achieve the desired reel tension, the factory recommends
that the knob be fully hand tightened (clockwise).
REMEMBER: Do Not use your pressure washer with the
hose coiled onto the hose reel. The hose reel is for hose
storage only.
SPECIFICATIONS
Outlet Pressure . . . . . 2,500 psi
Flow Rate . . . . . . . . . . 3.0 gallons per minute (gpm)
Detergent . . . . . . . . . . Use detergent approved for
pressure washers
Water Supply . . . . . . Not to Exceed 140°F
Temperature
Automatic Cool . . . . Will cycle when water
Down System reaches 140°-145°F
GENERAL MAINTENANCE
RECOMMENDATIONS
The pressure washer warranty does not cover items that
have been subjected to operator abuse or negligence. To
receive full value from the warranty, the operator must
maintain the pressure washer as instructed in this manual.
• Some adjustments will need to be made periodically to
properly maintain your pressure washer.
• All adjustments in the Maintenance section of this manual
should be made at least once each season.
• Once a year you should clean or replace the spark plug
and clean or replace the air filter and check the spray gun
and nozzle extension for wear. A new spark plug and
clean air filter assure proper fuel–air mixture and help
your engine run better and last longer.
Before Each Use
• Unplug battery charger from unit.
• Check engine oil level.
• Check water inlet screen for damage.
• Check high pressure hose for leaks.
• Remove hose completely from reel before spraying.
• Check detergent siphon tube and filter for damage.
• Check spray gun and nozzle extension assembly for leaks.
• Rinse out garden hose to flush out debris.
PRESSURE WASHER
MAINTENANCE
Check and Clean Inlet Screen
Examine the screen on the water inlet. Clean it if the
screen is clogged or replace it if screen is damaged.
Check High Pressure Hose
The high pressure hose can develop leaks from wear,
kinking, or abuse. Inspect the hose each time before using
it. Check for cuts, leaks, abrasions or bulging of cover,
damage or movement of couplings. If any of these
conditions exist, replace the hose immediately.
DANGER! Water spraying from a leak is capable
of injecting material into skin. Inspect hose each
time before using it. Never repair a high pressure
hose. Replace it with another hose that exceeds the
maximum pressure rating of your pressure washer.
Check Chemical Injection Tube
Examine the filter on the detergent hose and clean if
clogged. The tube should fit tightly on the pump’s barbed
fitting. Examine the tube for leaks or tears. Replace the
filter or tube if either is damaged.

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14
Check In-Line Filter
Refer to Figure 17 and service the in-line filter if it
becomes clogged, as follows:
1. Detach spray gun and nozzle extension from high
pressure hose. Detach nozzle extension from spray
gun and remove o-ring and screen from nozzle
extension. Flush the screen, spray gun, and nozzle
extension with clean water to clear debris.
2. If the screen is damaged, the o-ring kit contains a
replacement in-line filter screen and an o-ring. If
undamaged, reuse screen.
3. Place the in-line filter screen into the threaded end of
the nozzle extension. Direction does not matter. Push
the screen in with the eraser end of a pencil until it
rests flat at the bottom of the opening. Take care to
not bend the screen.
4. Place the o-ring into the recess. Push the o-ring snugly
against the in-line filter screen.
5. Assemble the nozzle extension to the spray gun, as
described earlier in this manual.
Check Spray Gun and Nozzle
Extension
Examine the hose connection to the spray gun and make
sure it is secure. Test the trigger by pressing it and making
sure it springs back into place when you release it. Put the
safety latch in the ON position and test the trigger. You
should not be able to press the trigger.
Purge Pump of Air and
Contaminants
To remove air from the pump, follow these steps:
• Set up the pressure washer as described in “Preparing
the Pressure Washer for Use” and connect the water
supply. Turn ON the water.
• Pull the trigger on the spray gun and hold.
• When the water supply is steady and constant, engage
the safety latch.
To remove contaminants from the pump, follow
these steps:
• Set up the pressure washer as described in “Preparing
the Pressure Washer for Use” and connect the water
supply.
• Remove the nozzle extension from the spray gun.
• Start the engine according to instructions given in “How
To Use Your Pressure Washer”.
• Squeeze the trigger on the spray gun and hold.
• When the water supply is steady and constant, engage
the safety latch and refasten the nozzle extension.
Detergent Siphon Tube
If you have used the detergent siphon tube you must flush
it with clean water before storing the unit.
• Place the detergent siphon tube in a bucket full of clean
water.
• With the engine running, flush for 1–2 minutes.
• Shut off the engine.
IMPORTANT: Simply shutting OFF engine will not
release pressure in the system. When the engine has shut
down, squeeze the trigger on the spray gun to
relieve the pressure in the hose.
Figure 17 — Clean In-Line Filter
Nozzle Extension
Filter Screen
O-ring

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Nozzle Maintenance
If the nozzles becomes restricted or clogged with foreign
materials, such as dirt, excessive pump pressure may
develop. If the nozzles become partially clogged, it can
cause a pulsing sensation during use. This generally is not a
pump related problem, but rather a clogged or partially
restricted nozzle.
If the nozzles become clogged or partially restricted,
immediately clean the nozzles with the kit included with
your pressure washer by following these instructions:
• Shut off the engine and turn off the water supply.
• Remove the nozzle from the end of the nozzle extension.
• Use the wire included in the kit or a small paper clip to
free the foreign materials clogging or restricting the
nozzle (Figure 18).
• Remove additional debris by rinsing out the nozzle for 30
to 60 seconds.
• Reinstall the nozzle into the nozzle extension.
• Reconnect the water supply, turn on the water, and start
the engine.
• Test the pressure washer.
O–Ring Maintenance
Through the normal operation of your pressure washer,
o–rings, which keep the connections of the hoses and spray
gun tight and leak–free, may become worn or damaged.
Provided with your pressure washer is an O–Ring
Maintenance Kit which includes replacement o-rings, a
rubber washer and a water inlet filter. Refer to the
instruction sheet provided in the kit to service your unit’s
o-rings. Note that not all of the parts in the kit will be used
on your unit.
To remove a worn or damaged o–ring:
• Use a small flathead screwdriver to get underneath the
o-ring and pry it off.
Battery Maintenance
This unit is supplied with battery and charger jack
connections covered with insulating compound to avoid
corrosion and prolong battery life.
Some dielectric compound may squirt out when plugging
the charger into the jack for the first time. Add more
compound (Generac part number 185928 or GC
Electronics number 10-8101 or equivalent) only if the
connections are no longer coated with dielectric
compound.
NOTE: Do Not use petroleum jelly in the absence of
dielectric compound.
Other than trickle charging, described elsewhere, no
maintenance is required for the battery. If you have a need
to contact the battery manufacturer, call 888-841-5179.
IMPORTANT: Battery charging should be performed in a
dry location, such as inside a garage.
Use wire here
to remove
debris.
Figure 18 — Nozzle Maintenance

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ENGINE MAINTENANCE
See the engine owner’s manual for instructions on how to
properly maintain the engine.
PREPARING THE UNIT
FOR STORAGE
Water should not remain in the unit for long periods of
time. Sediments or minerals can deposit on pump parts and
“freeze” pump action. If you do not plan to use the
pressure washer for more than 30 days, follow this
procedure:
1. Flush detergent siphoning tube by placing the filter into
a pail of clean water while running pressure washer in
low pressure mode. Flush for one to two minutes.
2. Shut off the engine and let it cool, then remove all
hoses. Disconnect spark plug wire from spark plug.
3. Empty the pump of all pumped liquids by pulling the
recoil handle about 6 times. This should remove most
of the liquid in the pump.
NOTE: To protect the unit from freezing temperatures,
draw RV antifreeze (non-alcohol) into the pump by pouring
the solution into a 3-foot section of garden hose connected
to inlet adapter and pulling recoil handle twice.
4. Store unit in a clean, dry area.
Hose Storage:
• Disconnect hose from spray gun and high pressure outlet
on pump. Drain water from hose and wipe off the hose
with a rag.
• Store the hose on the hose reel as described in “How To
Use the Hose Reel”.
Battery Storage:
Store your unit with the DC battery charger plugged in to
keep your battery charged and ready for use.
If you store your pressure washer below freezing
temperatures and the charger cannot be plugged in, charge
the battery for 24 hours prior to storage. Be sure to
recharge the battery once each month to maintain a fully
charged battery.
STORING THE ENGINE
See the engine owner’s manual for instructions on how to
properly prepare the engine for storage.

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TROUBLESHOOTING
Problem Cause Correction
Pump has following
problems: failure to
produce pressure, erratic
pressure, chattering, loss of
pressure, low water
volume.
1. Low pressure nozzle (black) is being
used.
2. Water inlet is blocked.
3. Inadequate water supply.
4. Inlet hose is kinked or leaking.
5. Clogged inlet hose strainer.
6. Water supply is over 140°F.
7. High pressure hose is blocked or
leaks.
8. Gun leaks.
9. Nozzle is obstructed.
10. Pump is faulty.
1. Replace with any of the three high
pressure nozzles.
2. Clear inlet.
3. Provide adequate water flow.
4. Straighten if kinked or replace hose.
5. Check and clean inlet hose strainer.
6. Provide cooler water supply.
7. Clear blocks in outlet hose or replace
if leaking.
8. Replace gun.
9. Clean nozzle.
10. Contact Generac service facility.
Detergent fails to mix with
spray.
1. Detergent siphoning tube is not
submerged.
2. Chemical filter is clogged.
3. A high pressure nozzle is being
used.
1. Insert detergent siphoning tube into
detergent.
2. Clean or replace filter/detergent
siphoning tube.
3. Replace with low pressure (black)
nozzle.
Engine runs good at no-
load but “bogs” when load
is added.
Engine speed is too slow. Move throttle control to FAST position. If
engine still “bogs down”, contact Briggs
and Stratton service facility.
Engine will not start; or
starts and runs rough.
1. Dirty air cleaner.
2. Out of gasoline.
3. Stale gasoline.
4. Spark plug wire not connected to
spark plug.
5. Bad spark plug.
6. Water in gasoline.
7. Overchoking.
8. White smoke from exhaust.
9. Intake valve stuck open or closed.
10. Engine has lost compression.
11. Battery dead.
1. Clean or replace air cleaner.
2. Fill fuel tank.
3. Drain gas tank; fill with fresh fuel.
4. Connect wire to spark plug.
5. Replace spark plug.
6. Drain gas tank; fill with fresh fuel.
7. Open choke fully and crank engine.
8. Contact Briggs and Stratton service
facility.
9. Contact Briggs and Stratton service
facility.
10. Contact Briggs and Stratton service
facility.
11. Charge or replace battery. See phone
number on battery.
Engine shuts down during
operation.
Out of gasoline. Fill fuel tank.
Engine lacks power. Dirty air filter. Replace air filter.
Engine “hunts” or falters. Choke is opened too soon. Move choke to halfway position until
engine runs smoothly.

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18
NOTES

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SCHEMATIC AND WIRING DIAGRAM

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EXPLODED VIEW — UNIT