Generac Power Systems 2000PSI User manual

This pressure
washer is
equipped with an
Automatic Cool
Down System.
See page 12 for
details
This symbol points out important safety instructions, which, if not followed, could endan
ger the personal safety and/or property of yourself and others. Read and follow all
instructions in the manual before attempting to operate this unit.
Model No. 10402 (2000 PSI High Pressure Washer) Manual No. B3408 Revision 0 (12/28/98)
2000PSI
Owner’s Manual
Problems?
Questions?
Before taking your unit
back to the store,
call the pressure washer
helpline at
1 800 270 1408
M F 8 5 CST
GENERAC
The Reliable Ones

Generac 2000PSI High Pressure Washer
GENERAC
The Reliable Ones
2
SAFETY RULES
DANGER! Always disconnect spark plug
wire and place wire where it cannot
contact spark plug to prevent accidental
starting when setting up, transporting,
adjusting or aking repairs to your high
pressure washer.
 Engine exhaust gases contain DEADLY carbon
onoxide gas. This dangerous gas, if breathed
in sufficient concentrations, can cause
unconsciousness or even death. Operate this
equip ent only in the open air where adequate
ventilation is available.
 Gasoline is highly FLAMMABLE and its vapors
are EXPLOSIVE. Do not per it s oking, open
fla es, sparks or heat in the vicinity while
handling gasoline. Avoid spilling gasoline on a
hot engine. Allow unit to cool for 2 inutes
before refueling. Co ply with all laws
regulating storage and handling of gasoline.
 Locate this pressure washer in areas away
fro co bustible aterials, co bustible fu es
or dust.
 The high pressure equip ent is designed to be
used with Generac authorized parts only. If you
use this equip ent with parts that do not
co ply with ini u specifications, the user
assu es all risks and liabilities.
 So e che icals or detergents ay be har ful
if inhaled or ingested, causing severe nausea,
fainting or poisoning. The har ful ele ents
ay cause property da age or severe injury.
 Do not allow CHILDREN to operate the
Pressure Washer at any ti e.
 Operate engine only at governed speed.
Running the engine at excessive speeds
increases the hazard of personal injury. Do not
ta per with parts which ay increase or
decrease the governed speed.
 Do not wear loose clothing, jewelry or anything
that ay be caught in the starter or other
rotating parts.
 Before starting the Pressure Washer in cold
weather, check all parts of the equip ent and
be sure ice has not for ed there.
 Units with broken or issing parts, or without
protective housing or covers should NEVER be
operated.
 The uffler and air cleaner ust be installed
and in good condition before operating the
Pressure Washer. These co ponents act as
spark arrestors if the engine backfires.
 Check the fuel syste for leaks or signs of
deterioration such as chafed or spongy hose,
loose or issing cla ps or da aged tank or
cap. Correct all defects before operating the
Pressure Washer.
 Do not spray fla able liquids.
 Never ai the gun at people, ani als or
plants.
 High pressure spray can cause paint chips or
other particles to beco e airborne and fly at
high speeds.
The engine exhaust from this product
contains chemicals known to the State
of California to cause cancer, birth
defects, or other reproductive harm.
WARNING:
IMPORTANT!  SAFETY RULES  IMPORTANT!

Generac 2000PSI High Pressure Washer
GENERAC
The Reliable Ones
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 Never allow any part of the body to co e in
contact with the fluid strea . DO NOT co e in
contact with a fluid strea created by a leak in
the high pressure hose.
 The high pressure strea of water that this
equip ent produces can pierce skin and its
underlying tissues, leading to serious injury
and possible a putation.
 Always wear eye protection when you use this
equip ent or when you are in the vicinity
where the equip ent is in use.
 Never ove the achine by pulling on the high
pressure hose. Use the handle provided on the
top of the unit.
 Always be certain the spray gun, nozzles and
accessories are correctly attached.
 Never use a spray gun which does not have a
trigger lock or trigger guard in place and in
working order.
 Use a respirator or ask whenever there is a
chance that vapors ay be inhaled. Read all
instructions with ask so you are certain the
ask will provide the necessary protection
against inhaling har ful vapors.
 High pressure spray ay da age fragile ite s
including glass. Do not point spray gun at glass
when in the jet spray ode.
 Keep the hose connected to achine or the
spray gun while the syste is pressurized.
Disconnecting the hose while the unit is
pressurized is dangerous.
 Hold the spray gun fir ly in your hand before
you start the unit. Failure to do so could result
in an injury fro a whipping spray gun. Do not
leave the spray gun unattended while the
achine is running.
 The cleaning area should have adequate
slopes and drainage to reduce the possibility of
a fall due to slippery surfaces.
 Keep water spray away fro electric wiring or
fatal electric shock ay result.
 Do not secure trigger gun in the pullback
(open) position.
 Do not bypass any safety device on this
achine.
 The uffler and engine heat up during
operation and re ain hot i ediately after
shutting it down. Avoid contact with a hot
uffler or engine or you could be severely
burned.
 Operate and store this unit on a stable surface.
 High pressure hose can develop leaks fro
wear, kinking, abuse, etc. Water spraying fro
a leak is capable of injecting aterial into
skin. Inspect hose each ti e before using it.
Check all hoses for cuts, leaks, abrasions or
bulging of cover, or da age or ove ent of
couplings. If any of these conditions exist,
replace hose i ediately. Never repair high
pressure hose. Replace it with another hose
that eets ini u pressure rating of your
pressure washer.
IMPORTANT!  SAFETY RULES  IMPORTANT!

Generac 2000PSI High Pressure Washer
GENERAC
The Reliable Ones
4
ASSEMBLY
CONGRATULATIONS on your purchase of a
GENERAC high pressure washer. It has been
designed, engineered and anufactured to give you
the best possible dependability and perfor ance.
Should you experience any proble you cannot
easily re edy, please contact your nearest
GENERAC Authorized Service facility, or call the
1800 nu ber listed on the front of this anual. We
have co petent, welltrained technicians and the
proper tools to service or repair this unit.
Please read and retain this anual. The instructions
will enable you to asse ble and aintain your high
pressure washer properly.
CUSTOMER
RESPONSIBILITIES
 Read and observe the safety rules.
 Follow regular schedule in aintaining, caring for
and using your high pressure washer.
 Follow the instructions under Custo er
Responsibilities and Storage sections of this
Owner's Manual.
PRODUCT
SPECIFICATIONS
Pressure Washer Specifications
Outlet Pressure . . . . 2000 psi
Flow Rate . . . . . . . . . 2.0 gallons per inute (gp )
Detergent Mix . . . . . . Use undiluted 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
Engine Specifications
Engine Model . . . . . . Briggs & Stratton Quantu
Rated Horsepower . . 6.0
Displacement . . . . . . 190cc
Spark Plug
Type . . . . . . . . RJ19LM
Set Gap To: . . 0.030 inch (0.76 )
Gasoline Capacity . . 1.6 U.S. quarts
Oil . . . . . . . . . . . . . . . SAE 30
In the State of California a spark arrestor is required
by law (Section 4442 of the California Public
Resources Code). Other states ay have si ilar
laws. Federal laws apply on federal lands.
NOTE: If you equip the engine of your pressure
washer with a spark arrestor uffler, the spark
arrestor ust be aintained in effective working order
by the owner/operator.
You can order a spark arrestor through your
authorized Briggs & Stratton service facility. See
Engine Owners Manual for part nu ber.
Model Number 10402
Serial Number
Date of Purchase
The odel and serial nu bers will be found on a
decal attached to the pressure washer. Record
both serial nu ber and date of purchase and
keep in a safe place for future reference.

Generac 2000PSI High Pressure Washer
GENERAC
The Reliable Ones
5
ASSEMBLY
KNOW YOUR PRESSURE WASHER
Read this owners manual and safety rules before operating your high pressure washer.
Co pare the illustrations with your high pressure washer to fa iliarize yourself with the locations of various
controls and adjust ents. Save this anual for future reference.
Adjustable Nozzle Extension  You ust attach this
to the spray gun to provide high pressure strea . The
adjustable nozzle allows you to adjust the spray pattern
which, in turn, adjusts the force of spray.
Air Cleaner  Dry type filter ele ent li its the a ount
of dirt and dust that gets in the engine.
Automatic Cool Down System  Cycles water
through pu p when water reaches 140°-145°F. Warm
water will discharge from pump onto ground. This
system prevents internal pump damage.
Gas Tank  Fill with regular unleaded gasoline only.
Goggles  Always use the enclosed goggles or other
eye protection when running your pressure washer.
High Pressure Hose  Connect one end to water
pu p and the other end to spray wand.
High Pressure Outlet  Connection for high pressure
hose.
Oil Fill Tube  Fill engine with oil here. See page 7 for
oil reco endations.
Pump  Develops high pressure.
Recoil Starter  Used for starting the engine
anually.
Spray Gun  Controls the application of water onto
cleaning surface with trigger device. Includes safety
latch.
Water Inlet  Connection for garden hose.
Spray Gun
Adjustable Nozzle
Extension
High Pressure Hose
Goggles
Air Cleaner
Gas Tank
Water Inlet
Pump equipped with
Automatic Cool Down System
Recoil Starter
High Pressure Outlet
Oil Fill Tube

Generac 2000PSI High Pressure Washer
GENERAC
The Reliable Ones
6
ASSEMBLY
Read entire owners anual before you atte pt to
asse ble or operate your new pressure washer.
Your new pressure washer has been asse bled at
the factory with the exception of those parts left
unasse bled for shipping purposes.
REMOVE PRESSURE
WASHER FROM CARTON
 Re ove parts box included with pressure washer.
 Slice two corners at guide handle end of carton
fro top to botto so the panel can be folded down
flat, then re ove all packing aterial.
 Roll pressure washer out of carton.
CARTON CONTENTS
Ite s in the carton include:
 Main Unit
 Parts Box (which includes the following):
 Wirefor
 ORing Maintenance Kit.
 Video
 Goggles
 Nozzle Cleaning Kit
 Owners Manual
 Engine Manual
 Spray Gun
 Nozzle Extension
 High Pressure Hose
 Handle
 Parts Bag (which includes the following):
 1 carriage bolt
 1 carriage hook
 2 knobs
If any of the above parts are issing or da aged, call
the pressure washer helpline at 18002701408.
PREPARING THE
PRESSURE WASHER
FOR USE
If you have any proble s with the asse bly of your
pressure washer or if parts are issing or da aged,
call the Pressure Washer Helpline at 1 800 270 1408.
To prepare your pressure washer for operation you
will need to perfor these tasks:
 Attach the handle and attach the wire for that
holds high pressure hose and spray gun.
 Connect high pressure hose to the spray gun and
the pu p and connect water supply to the pu p.
 Add oil to engine crankcase.
 Add fuel to fuel tank.
Attach the Handle
 Place the top of the handle onto the botto of the
handle already connected to the ain unit aking
sure the holes in the top align with the holes on the
botto (Figure 1).
Figure 1  Attach the top of the handle to
the botto of the handle.
Make sure the
holes on the
top of the
handle are
aligned with the
holes in the
bottom of the
handle

 Insert the carriage bolt through the right hole
(looking at the front of the pressure washer) and
attach a plastic knob. Tighten the knob by hand
(Figure 2).
 Insert the carriage hook through the left hole
(looking at the front of the pressure washer). Pull
the recoil handle out slowly. Place the recoil string
through the hook and attach the plastic knob.
Tighten the knob by hand (Figure 2).
 Insert the wire for with the longer ar positioned on
the left. Fro this view (fro rear of unit) the hook
should rese ble a J
(Figure 3) .
Add Engine Oil
IMPORTANT: Any atte pt to crank or start the
engine before it has been properly serviced with the
reco ended oil ay result in an engine failure.
Note: When adding oil to the engine crankcase, use
only high quality detergent oil rated with API service
classification SF,SG, SH or SH/CD rated SAE 30
weight. Select the oils viscosity grade according to
your expected operating te perature:
Do Not Use SAE 10W40 Oil.
Although ultiviscosity oils (5W30, 10W30, etc.)
i prove starting in cold weather, these ultiviscosity
oils will result in increased oil consu ption when used
above 32°F. Check your engine oil level ore
frequently to avoid possible da age fro running
low on oil.
 Place pressure washer on a level surface.
 Clean area around oil fill and re ove oil dipstick
(Figure 4).
 Wipe dipstick clean. Pour oil into oil fill opening until
oil reaches FULL ark on the dipstick. Stop
occasionally to check oil level. DO NOT OVERFILL.
 Install oil dipstick, hand tighten securely.
Note: Check Oil Often During Engine Breakin.
Add Gasoline
DANGER! Never fill fuel tank indoors. Never
fill fuel tank when engine is running or hot. Do
not s oke when filling fuel tank.
WARNING! Never fill fuel tank co pletely full.
Fill tank to about 1/2" below the botto of the
filler neck to provide space for fuel expansion.
Wipe away any fuel spillage fro engine and
equip ent before starting.
Generac 2000PSI High Pressure Washer
GENERAC
The Reliable Ones
7
ASSEMBLY
Figure 3  Fit wire for on handle.
Figure 4  Add oil to engine crankcase. Do not
atte pt to start engine without adding
oil.
Oil Fill Cap
Figure 2  Insert the carriage bolt and hook and
attach the knobs.
colder 32°F war er
5W30 SAE 30

Generac 2000PSI High Pressure Washer
GENERAC
The Reliable Ones
8
ASSEMBLY
The anufacturer reco ends fresh, clean unleaded
auto otive gasoline.
 Use clean fuel and store in approved, clean,
covered containers. Use clean fill funnels. Never
use stale gasoline left over fro last season or
gasoline stored for long periods.
 Clean area around fuel fill cap, re ove cap.
(Figure 5).
 Add UNLEADED regular gasoline, slowly, to fuel
tank. Use a funnel to prevent spillage.
 Install fuel cap and wipe up any spilled gasoline.
Connect Hose and Water
Supply to Pump
IMPORTANT: You ust asse ble wand and attach
all hoses before you start engine. Starting engine
without all hoses connected and water supplied will
da age pu p.
 Uncoil high pressure hose and attach one end of
hose to the base of the spray gun (Figure 6).
Tighten by hand.
 Attach other end of high pressure hose to the high
pressure outlet on the pu p (Figure 7). Tighten by
hand.
 Before you connect your garden hose to the water
inlet, inspect the Inlet Screen (Figure 8). Clean the
screen if it contains debris or have it replaced if
da aged. Do not run the pressure washer if the
inlet screen is damaged.
 Connect garden hose to water inlet. Tighten by
hand (Figure 8).
 Turn ON the water (open valve co pletely).
 Squeeze trigger on gun to purge pu p syste of
air and i purities.
CAUTION! Before starting the pressure
washer, be sure you are wearing adequate
eye protection.
Figure 7  Connect high pressure hose to pu p.
Figure 6  Connect high pressure hose
to spray gun.
Figure 8  Connect the garden hose to water inlet
and turn ON the water.
Figure 5  Add gasoline to fuel tank.
Fuel Cap
Connect High Pressure
Hose Here
Check Screen for Damage

Generac 2000PSI High Pressure Washer
GENERAC
The Reliable Ones
9
ASSEMBLY
 Attach nozzle extension to spray gun. Tighten by
hand (Figure 9). CHECKLIST BEFORE
STARTING ENGINE
If you have reached this point, look back over the
asse bly to see if you have perfor ed all of the
following.
 Check for properly tightened hose connections
(high pressure and water supply) and for tight
connections and that there are no kinks, cuts, or
da age to the high pressure hose.
 Check that oil has been added to proper level in
engine crankcase before trying to start the pressure
washer.
 Add proper gasoline to fuel tank.
 Provide proper water supply (not to exceed 140°F).
 Be sure to read Safety Rules and Operation
sections before using the pressure washer.
Figure 9  Connect nozzle extension to spray gun.

Generac 2000PSI High Pressure Washer
GENERAC
The Reliable Ones
10
HOW TO USE YOUR
PRESSURE WASHER
If you have any proble s operating your pressure
washer, please call the pressure washer helpline at
18002701408.
You have asse bled your high pressure washer and
have prepared the engine for starting. You are now
ready to clean your car, boat or the outside of a
building or whatever you plan to clean.
How to Start Your Engine
The best way to start your enginepowered pressure
washer for the first ti e is to follow these instructions
stepbystep. This starting infor ation also applies
whenever you start the engine after you have let the
pressure washer sit idle for at least a day.
 This pressure washer requires a water source that
flows at least 2 gallons per inute. Do not attempt
to siphon water from a nonpressurized
container. Place the pressure washer close
enough to an outside water source so that no ore
than 50' of garden hose is needed.
 Check that the high pressure hose is tightly
connected to the spray gun and to the pu p. See
ASSEMBLY section for illustrations.
 Connect the garden hose to water inlet on the
pressure washer pu p and turn the water on all
the way.
IMPORTANT: Do not run pu p without the water
supply connected and turned on. You ust follow this
caution or the pu p will be da aged.
 Move the Throttle Control Lever to the Fast
position
 Set Choke Lever to Choke position.
Note: This is a ultiposition choke.
Note: For a war engine, be sure the Throttle
Control Lever is in the Fast position and the Choke
Lever is in the Run position.
 Squeeze the trigger on the spray gun to relieve air
pressure caused by turning ON the water. Water
will spew out the gun in a thin strea . Continue to
hold trigger until you have a steady strea of water
and no air re ains.This will ake it easier to pull
start the engine. Release the trigger.
 Apply the safety latch to the spray gun trigger
(Figure 10).
 Grasp rope handle and pull slowly until you feel
so e resistance. Then pull cord rapidly to
overco e co pression, prevent kickback and start
the engine. Let rope return to starter slowly.
Note: Always keep the Throttle Control Lever in the
Fast position when operating the pressure washer.
 When the engine starts, gradually ove the Choke
Lever fro one position to the next until it is in the
Run position.
If after 3 pulls the engine fails to start, disengage the
spray gun safety latch, squeeze the trigger to relive
water pressure, reengage the spray gun safety latch,
ove the Choke Lever to the Run position and pull
the recoil starter handle rapidly (Max. 3 pulls).
How to Stop Your Pressure
Washer
 Move the Throttle Control Lever to the Slow position.
 Wait for the engine to idle down.
 Move the Throttle Lever Lever to the Stop position.
 Si ply shutting off the engine will not release
pressure in the syste . Squeeze trigger on the
spray gun to relieve pressure in the hose.
Note: A s all a ount of water will squirt out when
you release the pressure.
Figure 10  Squeeze trigger to relieve water
pressure, release trigger and turn
the safety latch ON.
Safety Latch ON

Generac 2000PSI High Pressure Washer
GENERAC
The Reliable Ones
11
How to Use the Adjustable
Nozzle and Adjust Pressure
You now should know how to START your pressure
washer and how to STOP it. The infor ation in this
section will tell you how to adjust the spray pattern
and apply detergent or any other cleaning che icals.
DANGER! Never adjust spray pattern when spraying.
Never put hands in front of nozzle to adjust spray
pattern.
On the end of your spray gun is a nozzle that you can
slide forward and backward and that you can also
twist fro side to side. With the adjustable nozzle you
can adjust the spray pattern to be either high
pressure or low pressure. You can also adjust the
spray so it is concentrated in a strea pattern or
expanded into a fan pattern.
 Slide the nozzle forward when you wish to adjust
the spray to low pressure ode (Figure 11). Slide
the nozzle backward to achieve high pressure.
 Located on the side of the pu p is a pressure
control knob. You can increase and decrease the
pressure of the spray by turning the knob clockwise
or counterclockwise respectively (Figure 12).
 Point the nozzle toward the ground and press the
trigger to test the pattern.
 Twisting the nozzle adjusts the spray pattern fro a
narrow pattern to a fan pattern.
 For ost effective cleaning, keep spray nozzle
between 8 to 24 inches away fro cleaning
surface.
 If you get spray nozzle too close, especially using
high pressure ode, you ay da age the cleaning
surface.
 Do not get closer than 6 inches when cleaning
auto obile tires.
Figure 11  Using the adjustable nozzle.
Slide Nozzle Backward
for High Pressure
Mode
Slide Nozzle Forward
for low pressure
mode and detergent
application
Twist nozzle
counterclockwise for
fan spray pattern
Twist nozzle
clockwise for narrow
spray pattern
Figure 12  Pressure control knob.
Pressure Control Knob

Generac 2000PSI High Pressure Washer
GENERAC
The Reliable Ones
12
Applying Detergent with the
Adjustable Nozzle
IMPORTANT: Use soaps designed specifically for
pressure washers. Household detergents could
da age the pu p.
IMPORTANT: You ust attach all hoses before you
start the engine. Starting the engine without all the
hoses connected and without the water turned ON will
da age the pu p.
To apply detergent follow these steps:
 Review the use of adjustable nozzles on Page 10.
 Prepare the detergent solution as required by the
job.
 Hang the detergent solution on hook of the
wirefor on the handle as shown (Figure 13).
 Place s all filter end of the che ical injecting tube
into the detergent container (Figure 13).
 Slide the adjustable nozzle forward to low pressure
ode. Detergent cannot be applied with nozzle in
high pressure position.
IMPORTANT: Detergent cannot be applied without
the water source turned on.
 Make sure garden hose is connected to water inlet.
Check that high pressure hose is connected to
spray gun and pu p (see ASSEMBLY starting on
Page 6 ), and start engine.
 Apply detergent to a dry surface, starting fro the
botto and working up to avoid streaking.
 Allow the detergent to soak in for 35 inutes
before washing and rinsing. Reapply if necessary to
prevent drying.
 For washing, start at lower portion of area to be
washed and work upward, using long, even,
overlapping strokes.
CAUTION! Keep the plastic injector tube
fro co ing in contact with the hot uffler.
This will da age the plastic tube. When
inserting the filter into a cleaning agent bottle,
route the tube so as to keep it fro
inadvertently contacting the hot uffler.
Note: After using che ical injection, you ust flush
the hose and the pu p with clear water to prevent
che icals fro drying and clogging the che ical
injection syste . See Cleaning Che ical Injector
Syste  on page 14.
Pressure Washer Rinsing
WARNING! Be extre ely careful if you ust
use the pressure washer fro a ladder,
scaffolding or any other relatively unstable
location. Pressure in a running washer builds
as you cli b. When you press the trigger, the
recoil fro the initial spray could force you to
fall. The high pressure spray could also force
you to fall if you are too close to the cleaning
surface.
For Rinsing:
 Slide nozzle backward to high pressure, squeeze
trigger and wait for detergent to clear.
 Keep the spray gun a safe distance fro the area
you plan to spray.
 Apply a high pressure spray to an s all area and
then check the surface for da age. If no da age
is found, you can assu e it is okay to continue
cleaning.
 Start at top of area to be rinsed, working down with
sa e overlapping strokes as you used for cleaning.
Note: You can also stop detergent fro flowing by
si ply re oving siphon fro bottle.
Automatic Cool Down System
(also known as Thermal Relief)
If you run the engine on your pressure washer for 35
inutes without pressing the trigger on the spray gun,
circulating water in the pu p can reach a te perature
between 140145°F. When the water reaches this
te perature, the auto atic cool down syste
engages and cools the pu p by discharging the
warm water onto the ground. This syste prevents
internal da age to the pu p.
Figure 13  Insert the s all filter into container of
cleaning solution.

Generac 2000PSI High Pressure Washer
GENERAC
The Reliable Ones
13
GENERAL MAINTENANCE
RECOMMENDATIONS
The warranty of the high pressure washer does not
cover ite s that have been subjected to operator
abuse or negligence. To receive full value fro the
warranty, operator ust aintain high pressure
washer as instructed in this anual.
 So e adjust ents will need to be ade
periodically to properly aintain your high pressure
washer.
 All adjust ents in the Service and Adjust ents
section of the engine owners anual should be
ade 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
gun and wand asse bly for wear. A new spark plug
and clean air filter assure proper fuelair ixture
and help your engine run better and last longer.
Before Each Use
 Check engine oil level.
 Check water inlet screen for da age.
 Check high pressure hose for leaks.
 Check detergent inlet hose and filter for da age.
 Check gun and wand asse bly for leaks.
PRESSURE WASHER
MAINTENANCE
Check and Clean Inlet Screen
Exa ine screen on the water inlet. Clean if the
screen is clogged or replace if screen is da aged.
Check High Pressure Hose
High pressure hose can develop leaks fro wear,
kinking, or abuse. Inspect hose each ti e before
using it. Check for cuts, leaks, abrasions or bulging of
cover, da age or ove ent of couplings. If any of
these conditions exist, replace hose i ediately.
DANGER! Water spraying fro a leak is
capable of injecting aterial into skin. Inspect
hose each ti e before using it. Never repair a
high pressure hose. Replace it with another
hose that eets the axi u pressure rating
of your pressure washer.
Check Detergent Hose
Exa ine the filter on the detergent hose and clean if
clogged. Hose should fit tightly on barbed fitting.
Exa ine hose for leaks or tears. Replace the filter or
hose if either is da aged.
Check Gun and Wand
Exa ine hose connection to gun and ake sure it is
secure. Test trigger by pressing it and aking sure it
springs back into place when you release it. Put
safety latch in ON position and test trigger. You
should not be able to press trigger.
Purge Pump of Air and
Contaminants
To re ove the air fro the pu p, follow these steps:
 Set up the pressure washer as described in the
ASSEMBLY section (starting on page 5) and
connect the water supply.
 Re ove the wand extension fro the gun.
 Squeeze the trigger on the gun and hold.
To re ove any conta inants fro the pu p, follow
these steps:
 Set up the pressure washer as described in the
ASSEMBLY section, and connect the water supply.
 Re ove the nozzle extension fro the spray gun.
 Start the engine according to instructions in
OPERATION section.
 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.

Cleaning Chemical Injector
System
If you have used the che ical injector syste you
ust flush it with clean water before stopping the
engine.
 Place the s all filter end of the che ical injection
tube in a bucket of clean water.
 Slide the adjustable nozzle forward.
 Squeeze the spray gun trigger for 12 inutes to
flush the che ical injection tube.
 Shut off the engine.
Important: Si ply shutting OFF engine will not release
pressure in the syste . When engine has shut down,
squeeze the trigger on the gun to relieve the
pressure in the hose.
Nozzle Maintenance
If the adjustable nozzle beco es restricted or
clogged with foreign aterials, such as dirt, excessive
pu p pressure ay develop. If this nozzle beco es
partially clogged, it can cause a pulsing sensation
during use. This generally is not a pu p related
proble , but rather a clogged or partially restricted
adjustable nozzle.
If the adjustable nozzle beco es clogged or partially
restricted, i ediately clean the nozzle with the kit
included with your pressure washer by following
these instructions:
 Shut off the engine and turn off the water supply.
 Separate the nozzle extension fro the gun.
 Adjust the nozzle extension to the strea position.
 Re ove nozzle fro the end of the wand extension
(Figure 14) using a 2 or 5/64 allen wrench (like
the one included in the kit).
 Use the wire included in the kit (Figure 14) or a
s all paper clip to free the foreign aterials
clogging or restricting the nozzle.
 Re ove additional debris by back flushing water
supply through wand extension (Figure 15). Back
flush between 30 to 60 seconds. Turn nozzle
extension to strea spray and ove nozzle forward
and backward while flushing.
 Reinstall nozzle into the wand extension. Do not
overtighten.
 Reconnect the nozzle extension to the spray gun.
 Reconnect the water supply, turn on the water, and
start the engine.
 Test the pressure washer by operating with nozzle
in the high and in the low position.
ENGINE MAINTENANCE
See the engine Owners Manual for instructions on
how to properly aintain the engine.
SERVICE AND
ADJUSTMENTS
See the engine Owners Manual for instructions on
how to properly service and adjust the engine
Generac 2000PSI High Pressure Washer
GENERAC
The Reliable Ones
14
Figure 14  Re oving and cleaning the nozzle.
Figure 15  Re oving and cleaning the nozzle.

Generac 2000PSI High Pressure Washer
GENERAC
The Reliable Ones
15
PREPARING THE UNIT FOR
STORAGE
Water should not re ain in the unit for long periods of
ti e. Sedi ents of inerals can deposit on pu p
parts and freeze pu p action. If you do not plan to
use the pressure washer for ore than 30 days,
follow this procedure:
1.Flush che ical injection tube by placing the injector
filter into a pail of clean water while running
pressure washer and squeezing the spray gun
trigger with the adjustable nozzle in low pressure
ode. Flush for 12 inutes.
2.Shut off the engine and let it cool, then re ove all
hoses.
3.Place throttle lever in STOP position.
CAUTION! Be sure lever is in STOP
position before you continue. If you start
engine without proper water supply connected,
you can da age pu p.
4.E pty the pu p of all pu ped liquids by pulling
recoil handle about 6 ti es. This should re ove
ost of the liquid in the pu p.
NOTE: To protect unit fro freezing te peratures,
draw windshield washer fluid into pu p by pouring
RV antifreeze (antifreeze without alcohol) into a
3foot section of garden hose connected to inlet
adapter and pulling recoil handle twice.
5.Store in a clean, dry area.
STORING THE ENGINE
See the Engine Owners Manual for instructions on
how to properly store the engine.

Troubleshooting Points
Generac 2000PSI High Pressure Washer
GENERAC
The Reliable Ones
16
Problem Cause Correction
Pump has following problems: 1. Nozzle in low pressure mode. 1. Pull nozzle backward for high
failure to produce pressure, erratic pressure mode.
pressure, chattering, loss of pressure, 2. Water inlet is blocked. 2. Clear inlet
low water olume. 3. Inadequate water supply 3. Pro ide adequate water flow.
4. Inlet hose is kinked or leaking 4. Straighten inlet hose, patch leak.
5. Clogged inlet hose strainer. 5. Check and clean inlet hose
strainer.
6. Water supply is o er 140°F. 6. Pro ide cooler water supply.
7. Outlet hose is blocked or leaks. 7. Clear blocks in outlet hose.
8. Gun leaks. 8. Replace gun.
9. Nozzle is obstructed. 9. Clear nozzle.
10. Pump is faulty. 10. Contact Generac ser ice facility.
Detergent fails to mix with spray. 1. Detergent line is not submerged. 1. Insert chemical line into deter
gent.
2. Chemical filter is clogged. 2. Clean or replace filter/detergent
line.
3. Nozzle is in high pressure mode. 3. Push nozzle forward for
low pressure mode.
Engine runs good at noload but bogs Engine speed is too slow. Mo e throttle control to FAST .
when load is added. position. If engine still bogs down
contact Generac ser ice facility.

Troubleshooting Points
Generac 2000PSI High Pressure Washer
GENERAC
The Reliable Ones
17
PROBLEM CAUSE CORRECTION
Engine will not start; or starts 1. Low oil le el 1. Fill crankcase to proper le el.
and runs rough 2. Dirty air cleaner 2. Clean or replace air cleaner.
3. Out of gasoline. 3. Fill fuel tank.
4. Stale gasoline. 4. Drain gas tank; fill with fresh fuel.
5. Spark plug wire not connected 5. Connect wire to spark plug.
to spark plug
6. Bad spark plug. 6. Replace spark plug.
7. Water in gasoline. 7. Drain gas tank; fill with fresh fuel.
8. O erchoking. 8. Open choke fully and crank
engine.
9. Excessi ely rich fuel mixture. 9. Contact Generac ser ice facility.
10. Intake al e stuck open or closed. 10. Contact Generac ser ice facility.
11. Engine has lost compression. 11. Contact Generac ser ice facility.
Engine shuts down during operation 1. Out of gasoline. 1. Fill fuel tank.
2. Low oil le el. 2. Fill crankcase to proper le el.
Engine lacks power. Dirty air filter. Replace air filter.
Engine hunts or falters. Choke is opened too soon. Mo e choke to halfway position
until engine runs smoothly.

18
Generac 2000PSI High Pressure Washer
GENERAC
The Reliable Ones
EXPLODED VIEW  PUMP
Drawing No. B3361A

19
Generac 2000PSI High Pressure Washer
GENERAC
The Reliable OnesThe Reliable Ones
REPAIR PARTS  PUMP
Item Part # Qty Description
1 B3287 1 O-RING, 1.625" x 0.103
2 B2260 1 ADAPTER, Engine
3 96542 2 BEARING, Eng. Adptr. Roller
Thrust 4 x 4
4 B3329 1 CAM, Axial 6.0 Lift Asse bly
6 B2261B 4 SCREW, Button Hd 5/16 - 24 x
3/4" Lg
7 B2217 4 O-RING, 0.239 ID x 0.070
8 94944 3 SHOE, Piston Pivot
9 99427 3 ASSEMBLY, Cera ic Piston &
Cap
10 96400 3 SPRING, Piston Return
11 99735 1 ASSEMBLY, Breather
12 93790 1 O RING, Crankcase 113.97 x
119.21 x 2.62
13 B2016 1 CRANKCASE ASSEMBLY
14 93668 3 SPACER, Pilot
15 40945 6 SCREW, SHC M6 x 1.0 x 20
Lg
16 93652 1 SPRING, Ther al Relief Actua-
tor
17 95416 1 PISTON, Ther al Relief Actua-
tor
18 93876 1 O RING, Ther al Relief 2.9 x
6.5 x 1.78
19 B2015 1 SPACER ASSEMBLY
20 A2069 1 GASKET, Head
21 97934 6 O - RING, Check Valve
22 B1449 6 CHECK VALVE, Inlet and Outlet
23 93644 1 ACTUATOR, Ther al Relief
24 96053 3 SEAL, High Pressure
25 96015 3 RING, Bearing
26 95380 1 SPRING, Che ical Injector
27 95379 1 BALL, 5.5 dia. Che ical Injector
28 A1575 1 BARB HOSE, Brass with Nylon
Insert
Item Part # Qty Description
29 B2151 1 VENTURI ASSEMBLY
30 89138 1 SPRING, Check Valve
31 B1879 1 SHUTTLE PISTON ASSEMBLY
32 A2503 1 SEAT, Trapped Line Pressure
33 A2015 1 BALL, Stainless Steel 9/32 Dia.
34 B2152 1 BALL SEAT ASSEMBLY
35 97840 3 O RING, Chk Valve Cap15.6 x
19.16 x 1.78
36 97841 3 CAP, Outlet Port
37 A2013 6 BOLT, Head M8 x 1.25 x 70
Lg
38 B2665 6 WASHER, Steel Special
39 B3148 1 HEAD ASSEMBLY
40 B3185 1 UNLOADER SPINDLE ASSEM-
BLY
41 A1716 1 SPRING, Unloader
42 B3117 1 HANDLE, Unloader
43 A2014 1 SET SCREW, M6 - 1.0 x 8
44 B2241 1 CAP, Plastic
Service Kits
45 B3519 0 CAM ASSEMBLY, 6.0 LIFT
46 B3507 0 HEAD ASSEMBLY
47 B3508 0 CRANKCASE ASSEMBLY
48 B3509 0 SPACER PLATE ASSEMBLY
49 B3480 0 COMPLETE HEAD ASSEMBLY
50 B3510 0 HIGH PRESSURE OUTLET
ASSEMBLY
51 B3513 0 CHECK VALVE ASSEMBLY, 6
pkg.
52 B3479 0 UNLOADER SPINDLE ASSEM-
BLY
53 B3478 0 PISTON/SHOE ASSEMBLY
54 B3514 0 O-RING/SEAL KIT

20
Generac 2000PSI High Pressure Washer
GENERAC
The Reliable OnesThe Reliable Ones
Drawing No. B3409
EXPLODED VIEW  MAIN UNIT