Generac Portable Products I587-0 User manual

High Pressure Washer Owner’s Manual
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Obey all safety messages that follow this symbol to avoid possible injury or death.
2400PSI
Model No. 1587-0 (2400 PSI High Pressure Washer) Manual No. 188669 Revision 0 (4/3/2001)
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 2,400 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 a high pressure
washer that operates at 2,400 PSI at a flow rate of
2.2 gallons per minute. This high quality residential system
features large 10” wheels, pump equipped with an
automatic cool down system, chemical injection system,
adjustable spray nozzle. Includes safety goggles, 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 13.
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 gases 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.
WARNING! 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.
• 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 allow CHILDREN to operate the pressure
washer at any time.
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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• 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
change the governed speed.
•Do Not wear loose clothing, jewelry or anything that
may be caught in the starter or other rotating parts.
• Before starting the pressure washer in cold weather,
check all parts of the equipment and be sure ice has not
formed there.
•Never use a spray gun which does not have a trigger
lock or trigger guard in place and in working order.
• 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.
• Units with broken or missing parts, or without
protective housing or covers, should Never be
operated.
• 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.
•Do Not spray flammable liquids.
• 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.
•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.
•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 a leak in the high pressure hose.
• Always wear eye protection when you use this
equipment or when you are in the vicinity where the
equipment is in use.
• High pressure spray can cause paint chips or other
particles to become airborne.
•Do Not operate the pressure washer above the rated
pressure.
•Never move the machine by pulling on the high pressure
hose. Use the handle provided on the unit.
• Always be certain the spray gun, nozzles and accessories
are correctly attached.
•Do Not secure the spray gun in the (open) position.
• High pressure spray may damage fragile items including
glass. Do Not point spray gun at glass when in the jet
spray mode.
• 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.
• The cleaning area should have adequate slopes and
drainage to reduce the possibility of a fall due to slippery
surfaces.
• Operate and store this unit on a stable surface.
• Keep water spray away from electric wiring or fatal
electric shock may result.
•Do Not by–pass any safety device on this machine.
• 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.
• 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 the maximum pressure rating
of your unit.
• 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.

Generac Portable Products 2,400 PSI High Pressure Washer
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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.
Adjustable Nozzle — Always attached to nozzle
extension. Pull back for high pressure or push forward for
low pressure. Turn clockwise for narrow spray, turn
counterclockwise for fan spray.
Detergent Siphoning Tube and Filter — Used to
siphon detergent from the chemical bottle into the low
pressure water stream.
Dual Element Air Filter — Filter limits the amount of
dirt and dust that gets in the engine.
Gas Tank — Fill tank with regular unleaded gasoline.
High Pressure Hose — Connect one end to the water
pump and the other end to the spray gun.
High Pressure Outlet — Connection for high pressure
hose.
Nozzle Extension — Attach to spray gun to use
adjustable nozzle.
Oil Fill Cap — Fill engine with oil here.
Pump — Develops high water pressure.
Recoil Starter — Use for starting the engine manually.
Safety Goggles — Always use the supplied 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.
Water Inlet — Connect garden hose here.
Spray Gun
Nozzle Extension
Adjustable Nozzle
High Pressure Hose
Recoil Starter
Safety Goggles
Gas Tank
Water Inlet
Pump equipped with
Automatic Cool Down System High Pressure Outlet
Dual Element Air Filter
Oil Fill Cap
Detergent Siphoning
Tube and Filter

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IMPORTANT: Read entire owner’s manual before you
attempt to assemble or operate your new pressure washer.
REMOVE PRESSURE
WASHER FROM
CARTON
• Remove the 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
• Parts Box (which includes the following):
• High Pressure Hose
• Wireform
• Goggles
• Nozzle Cleaning Kit
• Owner’s Manual
• Engine Manual
• Owner’s Registration Card
• Handle
• 2 Carriage Bolts
• 2 Knobs
• Spray Gun
• Nozzle Extension with Adjustable Nozzle
• Oil Bottle
• O-Ring Maintenance Kit
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:
• Add oil to the engine crankcase.
• Add fuel to the fuel tank.
• Attach the handle and attach the wire form that holds
the high pressure hose and spray gun.
• Connect the high pressure hose to the spray gun and the
pump.
• Connect the water supply to the pump.
Attach Handle and Wireform
• Place the handle onto the handle supports already
connected to the main unit. Make sure the holes in the
handle align with the holes on the handle supports.
(Figure 1)
NOTE: It may be necessary to move the handle supports
from side to side in order to align the handle so it will slide
over the handle supports.
• Insert the carriage bolts through the holes on the handle
and attach the plastic knobs. Tighten the knobs by hand
(Figure 2).
Make sure the
holes on the
handle are
aligned with the
holes on the
handle supports
Handle
Handle
Supports
Figure 1 — Attach the Handle to the Base

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• Insert the wire support with the longer arm positioned
on the left. From this view (from rear of unit), the hook
should resemble a “J” (Figure 3).
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 engine owners manual to add recommended oil
to engine.
NOTE: Check Oil Often During Engine Break–in.
NOTE: The pump is pre-lubricated and sealed, requiring
no additional lubrication for the life of the pump.
Add Gasoline
WARNING! 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.
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, remove the cap.
Slowly fill tank to about 1/2” below the bottom of the
filler neck (Figure 4).
• 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 the high pressure hose and attach one end of the
hose to the base of the spray gun (Figure 5). Tighten by
hand.
Figure 3 — Attach Wireform
Figure 4 — Add Gasoline to Fuel Tank
Figure 2 — Secure Handle

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• Attach the other end of the high pressure hose to the
high pressure outlet on the pump (Figure 6). Tighten by
hand.
• Before you connect your garden hose to the water inlet,
inspect the inlet screen (Figure 7). Clean the screen if it
contains debris or have it replaced if damaged. DO NOT
RUN THE PRESSURE WASHER IF THE SCREEN IS
DAMAGED. NEVER SIPHON INLET WATER.
• Run water through your garden hose for 30 seconds to
clean out any debris.
• Connect the garden hose to the water inlet. Tighten by
hand (Figure 7).
CAUTION! 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 gun
to purge the pump system of air and impurities.
CAUTION! Before starting the pressure washer,
be sure you are wearing adequate eye protection.
CHECKLIST BEFORE
STARTING ENGINE
Review the unit’s assembly to ensure you have performed
all of the following.
• Check that the handle is secure.
• Check that the wireform is properly installed.
• Check that oil and fuel has been added to the engine.
• Check for properly tightened hose connections.
• Check to make sure that there are no kinks, cuts, or
damage to the high pressure hose.
• Provide a proper water supply (not to exceed 100° F) at
an adequate flow.
• Be sure to read the “Safety Rules” (page 2) and
“Preparing Pressure Washer For Use” (page 5) before
using the pressure washer.
Connect high
pressure hose
here
Figure 5 — Connect High Pressure Hose to Spray Gun
Connect high
pressure
hose here
Figure 6 — Connect High Pressure Hose to Pump
Inspect inlet
screen, Do Not
use if damaged;
clean if dirty.
Figure 7 — Connect the Garden Hose to Water Inlet

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HOW TO USE YOUR
PRESSURE WASHER
If you have any problems operating your pressure washer,
please call the pressure washer helpline at
1-800-270-1408.
How to Start Your Engine
The best way to start your engine-powered 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 starting information also applies whenever you
start the engine after you have let the pressure washer sit
idle for at least a day.
• Place the pressure washer in an area close enough to an
outside water source capable of supplying water at a
flow rate greater than 2.4 gallons per minute.
• Check that the high pressure hose is tightly connected to
the spray gun and to the pump. See “Preparing Pressure
Washer for Use” (page 5) 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 and turned on. You must follow this
caution or the pump will be damaged.
• 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 adjustable nozzle extension to the spray gun
(Figure 8). Tighten by hand.
• Position the nozzle in the low pressure mode (see “How
to Use the Adjustable Nozzle”) and squeeze the trigger
on the spray gun to relieve the air pressure caused by
turning ON the water. Water will flow out of the spray
gun in a thin stream. Continue to hold trigger until there
is a steady stream of water and no air remains in the
system. This will make it easier to pull start the engine.
Release the trigger.
• Engage the safety latch to the spray gun trigger
(Figure 9).
• Turn the fuel valve to the “On” position (Figure 10).
• Place the choke lever in the “Choke” position
(Figure 10).
NOTE: For a warm engine, be sure the choke lever is in
the “Run” position.
• Move throttle lever to “Fast” position, shown here as a
rabbit (Figure 11).
• Grasp the starter grip handle and pull slowly until you
feel some resistance. Then pull rapidly to start the
engine.
Safety Latch
Figure 9 — Spray Gun with Safety Latch Engaged
Figure 8 — Connect Nozzle Extension to Spray Gun
Fuel Valve is shown
in the On position
Figure 10 — Fuel Valve and Choke Lever
Figure 11 — Throttle Lever

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• Return the starter grip handle slowly. Do Not let rope
“snap back” against starter.
• If the choke was placed in the “Choke” position to start
the engine, slowly push it to the “Run” position as soon
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 “Stop” position.
• Move the fuel 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.
How to Use the Adjustable Nozzle
You now should know how to START your pressure
washer and how to STOP it. The information in this
section will tell you how to adjust the spray pattern and to
apply detergent or other cleaning chemicals.
WARNING! Never adjust spray pattern when
spraying. Never put hands in front of nozzle to
adjust spray pattern.
• Slide the nozzle forward when you wish to adjust the
spray to low pressure mode (Figure 12). Slide the nozzle
backward to achieve high pressure.
• Point the nozzle down towards a firm surface and press
the trigger to test the pattern (Figure 13).
• Twisting the nozzle adjusts the spray pattern from a
narrow pattern to a fan pattern (Figure 14).
• For most effective cleaning, keep spray nozzle between
8 to 24 inches away from cleaning surface.
• If you get the spray nozzle too close, especially using high
pressure mode, you may damage the surface being
cleaned.
•Do Not get closer than 8 inches when cleaning tires.
Figure 14 — Adjusting the Nozzle for Spray Pattern
Rotate nozzle
counterclockwise for fan
spray pattern
Rotate nozzle clockwise
for narrow spray pattern
Slide nozzle backward
for High Pressure
Mode
Slide nozzle forward for low
pressure mode and
detergent application
Figure 12 — Adjusting Nozzle for Pressure
Figure 13 — Testing the Spray Pattern

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Applying Detergent with the
Adjustable Nozzle
IMPORTANT: Use soaps designed specifically for
pressure washers. Household detergents could damage
the pump.
IMPORTANT: 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.
To apply detergent, follow these steps:
• Review the use of adjustable nozzles.
• Prepare the detergent solution as required by the job.
• Hang the detergent solution on the hook of the
wireform attached to the handle, as shown in Figure 15.
• Remove the detergent siphoning tube from the clip on
the handle.
• Place the filter end of the detergent siphoning tube into
the detergent container.
CAUTION! Keep the detergent siphoning tube from
coming in contact with the hot muffler. This will damage the
plastic tube. When inserting the filter into a cleaning
solution bottle, route the tube so as to keep it from
inadvertently contacting the hot muffler.
• Slide the adjustable nozzle forward to low pressure
mode. Detergent cannot be applied with the nozzle in
high pressure position.
• Make sure the garden hose is connected to the water
inlet. Check that the high pressure hose is connected to
the spray gun and the pump (see “Connect Hose and
Water Supply to Pump”, page 7). Start the engine.
• Apply detergent to a dry surface, starting from the
bottom and working up.
• Allow the detergent to “soak in” for 3-5 minutes before
washing and rinsing. Reapply as needed to prevent
surface from drying.
• For washing, start at lower portion of area to be washed
and work upward, using long, even, overlapping strokes.
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.
For Rinsing:
• Slide the nozzle backward to high pressure, press the
trigger and wait for the detergent to clear.
NOTE: You can also stop detergent from flowing by
simply removing detergent siphoning tube from bottle.
• Keep the spray gun a safe distance from the area you
plan to spray.
• Apply a high pressure spray to a small area, then check
the surface for damage. If no damage is found, it is okay
to continue cleaning.
• Start at the top of the area to be rinsed, working down
with same overlapping strokes as you used for washing
and applying detergent.
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.
Figure 15 — Insert Filter into Container

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SPECIFICATIONS
Outlet Pressure . . . . . 2,400 psi
Flow Rate . . . . . . . . . . 2.2 gallons per minute (gpm)
Detergent . . . . . . . . . . Use detergent approved for
pressure washers
Water Supply . . . . . . Not to Exceed 100°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 high pressure washer as instructed in this
manual.
• Some adjustments will need to be made periodically to
properly maintain your high pressure washer.
• All maintenance in this manual and the engine owner’s
manual should be made at least once each season.
• Once a year you should clean or replace the spark plug,
clean or replace the air filter and check the spray gun and
adjustable nozzle extension assembly for wear. A new
spark plug and clean air filter assure proper fuel-air
mixture and help your engine run better and last longer.
Please refer to your engine owner’s manual for more
details.
BEFORE EACH USE
• Check engine oil level.
• Check water inlet screen for damage.
• Check in-line filter for damage.
• Check high pressure hose for leaks.
• Check detergent siphoning tube and filter for damage.
• Check spray gun and adjustable 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.
WARNING! 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 Detergent Siphoning Tube
Examine the filter on the detergent tube and clean if
clogged. The tube should fit tightly on the barbed fitting.
Examine the tube for leaks or tears. Replace the filter or
tube if either is damaged.
Check Gun and Adjustable 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
Pressure Washer For Use” (page 5). Connect the water
supply and turn water on.
• Pull the trigger on the spray gun and hold.

Generac Portable Products 2,400 PSI High Pressure Washer
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• 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
Pressure Washer For Use” (page 5). Connect the water
supply and turn water on.
• Remove the nozzle extension from the spray gun.
• Start the engine according to instructions in “How To
Use Your Pressure Washer” (page 8).
• 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.
Check In-Line Filter
Refer to Figure 16 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 adjustable
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.
Cleaning Detergent Siphoning Tube
If you used the detergent siphoning tube, you must flush it
with clean water before stopping the engine.
• Place the detergent siphoning tube in a bucket full of
clean water.
• Slide the adjustable nozzle forward to the low pressure
position. Flush for 1-2 minutes.
• Shut off the engine.
• Insert detergent siphoning tube into clip on handle.
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.
Nozzle Maintenance
A pulsing sensation felt while squeezing the spray gun
trigger may be caused by excessive pump pressure. The
principal cause of excessive pump pressure is a nozzle
clogged or restricted with foreign materials, such as dirt,
etc. To correct the problem, immediately clean the nozzle
using the tools included with your pressure washer and
follow these instructions:
1. Shut off the engine and turn off the water supply.
2. Detach the nozzle extension from the spray gun. Twist
the nozzle clockwise to the stream position. Using the
supplied 2mm (5/64) allen wrench, remove the nozzle
from the end of the nozzle extension (Figure 17).
3. Remove the in-line filter from the other end of the
nozzle extension.
4. Use the wire included in the kit (or a small paper clip)
to free any foreign material clogging or restricting the
nozzle (Figure 17).
Nozzle
Figure 17 — Removing and Cleaning Nozzle
Nozzle Extension
Filter Screen
O-ring
Figure 16 — Clean In-Line Filter

5. Using a garden hose, remove additional debris by back
flushing water through the nozzle extension
(Figure 18). Back flush between 30 to 60 seconds. Turn
the adjustable nozzle extension to stream spray and
move the nozzle from low to high while flushing.
6. Reinstall the nozzle and in-line filter into the nozzle
extension. Do Not overtighten the nozzle with the
allen wrench.
7. Reconnect the nozzle extension to the spray gun.
8. Reconnect the water supply, turn on the water, and
start the engine.
9. Test the pressure washer by operating with nozzle in
the high and in the low positions.
O–Ring Maintenance
Through the normal operation of your pressure washer,
o–rings are used to keep the connections of the hoses and
spray gun tight and leak–free. These o-rings may become
worn or damaged.
Provided with your pressure washer is an O–Ring
Maintenance Kit which includes replacement o-rings,
rubber washer and water inlet filter. Refer to the
instruction sheet provided in the kit to service your unit’s
o-rings. Note that you will not use all of the parts in the
kit.
To remove a worn or damaged o–ring:
• Use a small flathead screwdriver to get underneath the
o-ring and pry it off.
ENGINE MAINTENANCE
See the engine owner’s manual for instructions on how to
properly maintain the engine.
CAUTION! Avoid prolonged or repeated skin
contact with used motor oil. Used motor oil has
been shown to cause skin cancer in certain
laboratory animals. Thoroughly wash exposed areas
with soap and water.
KEEP OUT OF REACH OF CHILDREN. DON'T
POLLUTE. CONSERVE RESOURCES. RETURN
USED OIL TO COLLECTION CENTERS.
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 (adjustable nozzle in the forward
position). Flush for one to two minutes.
2. Shut off the engine and let it cool, then remove high
pressure and garden 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.
4. Use Generac brand PumpSaver to prevent corrosion
build up and freezing of pump.
5. Store unit in a clean, dry area.
Generac Portable Products 2,400 PSI High Pressure Washer
13
Figure 18 — Backflushing the Nozzle

Generac Portable Products 2,400 PSI High Pressure Washer
14
Protecting the Pump
To protect the pump from damage caused by mineral
deposits or freezing, use the Generac PumpSaver to treat
pump. This prevents freeze damage and lubricates pistons
and seals.
NOTE: Generac PumpSaver, model number 01559, is
available as an optional accessory. It is not included with the
pressure washer.
CAUTION! You must protect your unit from freezing
temperatures. Failure to do so will permanently damage
your pump and render your unit inoperable. Freeze damage
is not covered under warranty.
CAUTION! Read and follow all cautions and
warnings on the PumpSaver can label. Always wear
eye protection when using PumpSaver.
To use PumpSaver, make sure the pressure washer is
turned off and disconnected from supply water. Read and
follow all instructions and warnings given on the PumpSaver
container.
NOTE: PumpSaver will drip from pump after treatment
and will stain wood and concrete.
NOTE: If PumpSaver is not available, 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.
STORING THE ENGINE
See the engine owner’s manual for instructions on how to
properly prepare the engine for storage.

Generac Portable Products 2,400 PSI High Pressure Washer
15
TROUBLESHOOTING
Problem Cause Correction
Pump has following
problems: failure to produce
pressure, erratic pressure,
chattering, loss of pressure,
low water volume.
1. Nozzle in low pressure mode.
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 100°F.
7. High pressure hose is blocked or
leaks.
8. Gun leaks.
9. Nozzle is obstructed.
10. Pump is faulty.
1. Pull nozzle backward for high
pressure mode.
2. Clear inlet.
3. Provide adequate water flow.
4. Straighten inlet hose, patch leak.
5. Check and clean inlet hose strainer.
6. Provide cooler water supply.
7. Clear blocks in outlet hose.
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. Dirty in-line filter.
4. Nozzle is in high pressure mode.
1. Insert detergent siphoning tube into
detergent.
2. Clean or replace filter/detergent
siphoning tube.
3. See “Check In-Line Filter” on page 12.
4. Push nozzle forward for low pressure
mode.
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. Low oil level.
2. Dirty air cleaner.
3. Out of gasoline.
4. Stale gasoline.
5. Spark plug wire not connected to
spark plug.
6. Bad spark plug.
7. Water in gasoline.
8. Overchoking.
9. Excessively rich fuel mixture.
10. Intake valve stuck open or closed.
11. Engine has lost compression.
1. Fill crankcase to proper level.
2. Clean or replace air cleaner.
3. Fill fuel tank.
4. Drain gas tank; fill with fresh fuel.
5. Connect wire to spark plug.
6. Replace spark plug.
7. Drain gas tank; fill with fresh fuel.
8. Open choke fully and crank engine.
9. Contact Briggs and Stratton service
facility.
10. Contact Briggs and Stratton service
facility.
11. Contact Briggs and Stratton service
facility.
Engine shuts down during
operation.
1. Out of gasoline.
2. Low oil level. 1. Fill fuel tank. 2. Fill crankcase to proper level.
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.

Generac Portable Products 2,400 PSI High Pressure Washer
16
EXPLODED VIEW — UNIT

Generac Portable Products 2,400 PSI High Pressure Washer
17
PARTS LIST — UNIT
Item Part # Qty. Description
1 AB5721 1 BASE
2 B1982 1 BUMPER
3 42909 2 HHCS, M8 1.25 x 30
4 50190 2 WASHER, Flat .34" x 1"
5 27007 2 MOUNT, Donut Type Vibration
6 52858 2 NUT, Locking M8 - 1.25
7 B2150 1 HOOK, Gun
8 B2516 1 CAP, Vinyl, Black
9 B2043 7 BOLT, 5/16"-18 x 1-3/4" Carriage
10 30809 1 GROMMET, Rubber
11 B1232 1 CLAMP, Hose 7/16" Dia.
12 B1983 1 HANDLE
13 188680 1 DECALS/BILLBOARD, 1587-0
14 67989 8 NUT, M8 Flange Serrated
15 99583 8 NUT, Flange Lock 5/16"-18
16 B1981 2 SUPPORT, Handle
17 B4966 2 ASSEMBLY, 10" Tire & Wheel
18 75402C 2 PUSHNUT, 5/8" Dia.
19 48031G 1 CLAMP, Hose
20 B3107 1 HOSE, Thermal Drain
21 23707 4 SHCS, 5/16" - 24 x 1"
22 92479 4 WASHER, M8 Conical Ribbed
23 B2218 1 O-RING, 1.625" I.D.
24 48031B 2 CLAMP, Hose Band
25 B5642 1 HOSE, High Pressure
26 21217 4 MOUNT, Rubber Shock
27 BB3061B 1 OIL
28 87815 1 GOGGLES, Safety
29 B5765 1 MANUAL, Engine
30 B2203 1 KIT, Hardware
31 A1040D 1 HOSE, 4-1/2' Chemical Clear
32 A1041 1 FILTER, Chemical Hose
33 B3263 1 GUN, High Pressure
34 21761 1 NOZZLE, 1.05 Yellow Replacement
35 97566 1 TAG, Nozzle Instructions
36 B3335 1 LANCE, Nozzle Hi/Lo
37 97837 1 O-RING, Hi Pressure
38 B4224 1 SCREEN, Gun Inlet
39 B2168A 1 HANGER, Hose, Gun
40 188287 1 KIT, Nozzle Cleaning
41 B5830 1 KIT, "O" Ring
42 188669 1 MANUAL
43 21424 1 CONNECTOR, Garden Hose
44 B4925B 1 ASSEMBLY, Complete Pump (see pages 18-19)
45 NSP 1 ENGINE

Generac Portable Products 2,400 PSI High Pressure Washer
18
EXPLODED VIEW — PUMP

Generac Portable Products 2,400 PSI High Pressure Washer
19
PARTS LIST — PUMP
Item Part # Qty Description
1 B2218 1 O-RING, 1.625 ID x .103
2 97962 3 SHCS, M6 - 1 x 25
3 B5710 1 VALVE, 1/8 npt 1-5 PSI
4 97835 1 O-RING, Housing Seal
5 21783 1 VALVE, Thermal Relief
6 93680 3 SEAL, Oil Piston
7 97831 3 SPACER, Pilot
8 B2702 1 HOUSING, Piston
9 B4813 1 ADAPTER, Engine
10 97841 3 CAP, Outlet Check Valve
11 40946 4 SHCS, M6-1.0 x 35
12 185715 0 KIT, AXIAL CAM
1 . . . . . . 1 O-RING, Engine Seal
2 . . . . . . 3 SHCS, M6 - 1 x 25
4 . . . . . . 1 O-RING, Housing Seal
13 . . . . . . 1 WASHER, Brg. 36 x 65 x 6Thk
14 . . . . . . 2 ASSY., Brg. Cage 45 x 65
15 . . . . . . 3 WASHER, Brg. 45 x 65 x 1
16 . . . . . . 1 CAM, Axial 5.6 3/4"SAE
17 185287 0 KIT, CHEM INJECT
18 . . . . . . 1 FITTING, Chem Inject
19 . . . . . . 1 BALL, Chem Inject
20 . . . . . . 1 SPRING, Chem Inject
21 . . . . . . 1 O-RING, Venturi & Seat, Black
22 . . . . . . 1 VENTURI, Chem Inject
28 . . . . . . 1 O-RING, Venturi, Yellow
23 187879 0 KIT, UNLOADER
21 . . . . . . 1 O-RING, Venturi & Seat, Black
24 . . . . . . 1 CAP, Unloader
25 . . . . . . 1 O-RING, Unloader Cap
26 . . . . . . 1 SPRING, Unloader
27 . . . . . . 1 PISTON ASSY., Unloader
29 . . . . . . 1 SEAT, Unloader
Item Part # Qty Description
31 185712 0 KIT, CHECK VALVES
11 . . . . . . 4 SHCS, M6-1.0 x 35
32 . . . . . . 3 O-RING, Check Valve
33 . . . . . . 6 ASSY., Check Valve
45 . . . . . . 3 O-RING, Check Valve, White
34 185531 0 KIT, HEAD BRASS EG
11 . . . . . . 4 SHCS, M6-1.0 x 35
35 . . . . . . 1 HEAD, Pump
36 . . . . . . 1 PLUG, 1/8-28
46 . . . . . . 4 WASHER, M6 Flat
37 185713 0 KIT, PISTON & SPRING
1 . . . . . . 1 O-RING, Engine Seal
2 . . . . . . 3 SHCS, M6 - 1 x 25
4 . . . . . . 1 O-RING, Housing Seal
38 . . . . . . 3 RETAINER, Piston Spring
39 . . . . . . 3 PISTON, Dia. 15 x 65
40 . . . . . . 3 SPRING, Piston Return
41 185714 0 KIT, O-RING/SEAL 2300
1 . . . . . . 1 O-RING, Engine Seal
2 . . . . . . 3 SHCS, M6 - 1 x 25
4 . . . . . . 1 O-RING, Housing Seal
6 . . . . . . 3 SEAL, Oil Piston
11 . . . . . . 4 SHCS, M6-1.0 x 35
21 . . . . . . 2 O-RING, Venturi & Seat, Black
25 . . . . . . 1 O-RING, Unloader Cap
28 . . . . . . 1 O-RING, Venturi, Yellow
32 . . . . . . 3 O-RING, Check Valve
42 . . . . . . 3 SEAL, Double-Lip
43 . . . . . . 1 O-RING, High Pressure Transfer
44 . . . . . . 3 O-RING, Outlet CV Cap
45 . . . . . . 3 O-RING, Check Valve, White
Item numbers 12, 17, 23, 31, 34, 37, and 41 are service kits
and include all parts shown within the box. Certain parts
may only be available as components of a kit.

LIMITED PRESSURE WASHER WARRANTY
GENERAC PORTABLE PRODUCTS (hereafter referred to as the COMPANY) warrants to the original retail purchaser, the
pressure washer manufactured by the COMPANY to be free from defects in material and workmanship for the period(s)
set forth below from the date of original purchase. This warranty is not transferable. The term “original purchaser” means
the person for whom the pressure washer is originally purchased.
Warranty Schedules
Electric Power Washer 1 year (does not apply to commercial or rental applications)
CONSUMER* COMMERCIAL*
All Other Engine-driven Engine: Warranted solely by Warranted solely by
Engine Manufacturer Engine Manufacturer
Pump: 1 year 90 days
* NOTE: For the purpose of this warranty “consumer” use means personal residential household use by
original purchaser. “Commercial” use means all other uses, including rental, construction, commercial and
income producing purposes. Once a pressure washer has experienced commercial use, it shall thereafter be
considered a commercial use pressure washer for the purposes of this warranty.
During said warranty period, the COMPANY will, at its option, repair or replace any part which, upon examination by the
COMPANY or COMPANY-Authorized Dealers, is found to be defective under normal use and service**. All transportation
costs under warranty, including return to the factory if necessary, are to be borne by the purchaser and prepaid by the
purchaser.
** NORMAL WEAR: As with all mechanical devices, pressure washers need periodic parts service and
replacement to perform well. This warranty does not cover repair when normal use has exhausted the life
of a part or pressure washer pump.
This warranty does not include: Used products and demonstration equipment. Parts, such as GUNS, HOSES, WANDS,
NOZZLES or other wear items such as quick couplers, oil, gauges, belts, o-rings, filters, pump packing, etc. Pumps which
have been run without water supplied. Damage or malfunctions resulting from: accidents, abuse, modifications, alterations,
or improper servicing. Freezing or chemical deterioration. Normal maintenance such as adjustments, fuel system cleaning
and obstruction (due to chemical, dirt, carbon or lime, etc.).
THIS WARRANTY IS IN PLACE OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, SPECIFICALLY,
THE COMPANY MAKES NO OTHER WARRANTIES AS TO MERCHANTABILITY OR FITNESS FOR A
PARTICULAR PURPOSE. THE DURATION OF ANY IMPLIED WARRANTIES WHICH CANNOT BE
DISCLAIMED IS LIMITED TO THE TIME PERIOD AS SPECIFIED IN THE EXPRESS WARRANTY. LIABILITY
FOR CONSEQUENTIAL, INCIDENTAL, OR SPECIAL DAMAGES UNDER ANY AND ALL WARRANTIES IS
EXCLUDED, EVEN IF SUCH DAMAGES ARE A DIRECT RESULT OF THE COMPANY'S NEGLIGENCE. THE
COMPANY ALSO DISCLAIMS ANY RESPONSIBILITY FOR INCIDENTAL OR CONSEQUENTIAL
DAMAGES SUCH AS THE LOSS OF TIME OR THE USE OF THE POWER EQUIPMENT, OR ANY
COMMERCIAL LOSS DUE TO THE FAILURE OF THE EQUIPMENT: AND ANY IMPLIED WARRANTIES
ARE LIMITED TO THE DURATION OF THIS WRITTEN WARRANTY.
Some states do not allow limitations on how long an implied warranty lasts, or the exclusion or limitation of incidental or
consequential damages, so the above limitations or exclusions may not apply to you. This warranty gives you specific legal
rights and you may also have other rights, which vary from state to state.
For service, see your nearest COMPANY-Authorized warranty service facility or call 1-877-544-0982. Warranty service can
be performed only by a COMPANY-Authorized service facility. This warranty will not apply to service at any other facility.
At the time of requesting warranty service, evidence of original purchase date must be presented.
Generac Portable Products
Jefferson, Wisconsin U.S. A.