Page 1
2300PSI
Pressure Washer 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 CT
GENERAC
The Reliable Ones
This symbol points out important safety instructions, which, if not followed, could endanger 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. 12921 (2300 psi High Pressure Washer) Manual No. B4730 Revision 1 (4/15/1999)
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2
CAUTION! Disconnect spark plug wire and place wire where it cannot contact spark plug to prevent
accidental starting when setting up, transporting, adjusting or making repairs to your high pressure
washer.
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.
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.
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.
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.
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.
Units with broken or missing parts, or without
protective housing or covers should NEVER be
operated.
The muffler and air cleaner must be installed and
in good condition before operating the pressure
washer. These components act as spark
arrestors if the engine backfires.
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.
Never aim the gun at people, animals or plants.
High pressure spray can cause paint chips or
other particles to become airborne and fly at high
speeds. Always wear eye protection when
operating the pressure washer.
The engine exhaust from this product contains
chemicals known to the State of California to
cause cancer, birth defects, or other
reproductive harm.
WWAARRNNIINNGG::
Generac Portable Products 2300PSI High Pressure Washer
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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.
The high pressure hose can develop leaks from
wear, kinking, abuse, etc. Water spraying from a
leak is capable of injecting material into
skin. Inspect the hose each time before use.
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 the high
pressure hose. Replace it with another hose that
meets minimum pressure rating of your pressure
washer.
The high pressure stream of water that this
equipment produces can pierce skin and its
underlying tissues, leading to serious injury.
Always wear eye protection when you use this
equipment or when you are in the vicinity where
the equipment is in use.
Never move the machine 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 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.
High pressure spray may damage fragile items
including glass. Do not point spray gun at glass
when in high pressure mode.
Keep the hose connected to machine and spray
gun while the system is pressurized.
Disconnecting the hose while the unit is
pressurized is dangerous.
Hold the spray gun firmly in your hands 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.
Keep water spray away from electric wiring.
Fatal electric shock may result.
Do not secure trigger gun in the pull-back (open)
position.
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.
Operate and store this unit on a stable, level
surface.
Generac Portable Products 2300PSI High Pressure Washer
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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.
Should you experience any problem you cannot
easily remedy, please contact your nearest
GENERAC Authorized Service facility, or call the 1800 number listed on the front of this manual. We
have competent, well-trained technicians and the
proper tools to service or repair this unit.
Please read and retain this manual. The instructions
will enable you to assemble and maintain your high
pressure washer properly.
CUSTOMER RESPONSIBILITIES
Read and observe the safety rules.
Follow regular schedule in maintaining, caring for
and using your high pressure washer.
Follow the instructions under Customer
Responsibilities and Storage sections of this
Owner's Manual.
PRODUCT SPECIFICATIONS
Pressure Washer Specifications
Outlet Pressure . . . . 2300 psi
Flow Rate . . . . . . . . . 2.9 gallons per minute (gpm)
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 Intek
Rated Horsepower . . 6
Displacement . . . . . . 190cc
Spark Plug
Type . . . . . . . . RC-12YC
Set Gap To: . . 0.030 inch (0.76mm)
Gasoline Capacity . . 3 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 may have similar
laws. Federal laws apply on federal lands.
NOTE: If you equip the engine of your pressure
washer with a spark arrestor muffler, the spark
arrestor must be maintained in effective working order
by the owner/operator.
You can order a spark arrestor through your
authorized Briggs & Stratton service facility. See
Engine Owners Manual for details.
Model Number 12921
Serial Number
Date of Purchase
The model and serial numbers will be found on a
decal attached to the pressure washer. Record both
serial number and date of purchase and keep in a
safe place for future reference.
Generac Portable Products 2300PSI High Pressure Washer
Page 5
KNOW YOUR PRESSURE WASHER
Read this owners 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.
5
Adjustable Nozzle Extension Attach the adjustable
nozzle extension to the spray gun to provide high
pressure stream. The adjustable nozzle allows you to
adjust the spray pattern which, in turn, adjusts the force
of spray.
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.
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.
Always leave room for fuel expansion.
Goggles Always use the enclosed goggles or other
eye protection when running your pressure washer.
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.
Yellow Oil Fill Cap Fill engine with oil here. See
page 7 for oil recommendations.
Pressure Control Knob Varies the pressure of the
high pressure spray.
Pump Develops high pressure.
Recoil Starter Use for starting the engine manually.
Spray Gun Controls the application of water onto
cleaning surface with trigger device. Includes safety
latch.
Water Inlet Connect garden hose here.
Spray Gun
Adjustable Nozzle Extension
High Pressure Hose
Recoil Starter
Goggles
Gas Tank
Water Inlet
Pressure Control Knob
Pump equipped with
Automatic Cool Down System
High Pressure Outlet
Dual Element Air Filter
Yellow Oil Fill Cap
Generac Portable Products 2300PSI High Pressure Washer
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Read entire owners manual before you attempt to
assemble or operate your new pressure washer. Your
new pressure washer has been assembled at the
factory with the exception of those parts left
unassembled for shipping purposes.
REMOVE PRESSURE WASHER
FROM CARTON
Remove parts box included with pressure
washer.
Slice two corners at guide handle 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
Manual Bag Contents
Manual
O-Ring Kit
Nozzle Cleaning Kit
StaBil® Brochure
Owner Registration Card
B&S Intek Engine Manual
Parts Box (which includes the following):
StaBil®
Engine Oil
Video
Wireform
Goggles
Spray Gun
Nozzle Extension
High Pressure Hose
Handle
Parts Bag (which includes the following):
2 carriage bolts
2 knobs
PREPARING THE 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:
Remove shipping cap on top of pump.
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 and connect water supply to the
pump.
Add oil to engine crankcase.
Add fuel to fuel tank.
Remove Shipping Cap
To prevent oil from leaking from the pump, a shipping
cap has been installed on the oil breather of the
pump.
You must remove the cap for your pressure washer to
operate properly (Figure 1).
Running unit with the shipping cap installed will
damage the pump and void your warranty.
Attach the Handle
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 2)
Figure 1 Remove shipping cap on top of pump.
Shipping Cap
Remove
shipping cap
from here.
Generac Portable Products 2300PSI High Pressure Washer
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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 3).
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 4).
Add Engine Oil
IMPORTANT: Any attempt to start the engine before it
has been properly serviced with the recommended oil
may 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 rated SAE 30 weight.
Select the oils viscosity grade according to your
expected operating temperature. Do Not Use SAE
10W40 Oil.
Although multi-viscosity oils (5W30, 10W30, etc.)
improve starting in cold weather, these multi-viscosity
oils will result in increased oil consumption when used
above 32°F. Check your engine oil level more
frequently to avoid possible damage from running low
on oil.
Place pressure washer on a level surface.
Clean area around yellow oil fill and remove oil
fill cap (Figure 5). Do not use grey cap to add or
check oil.
Pour oil into oil fill opening until the oil reaches
the point of overflowing. Stop occasionally to
check oil level. Do not overfill.
Install oil fill cap, hand tighten securely.
Note: Check oil often during engine breakin.
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. Fill tank to about 1/2" below the bottom of
the filler neck to provide space for fuel
expansion. Wipe away any fuel spillage from
engine and equipment before starting.
DANGER! Allow engine to cool 2 minutes
before refueling.
Figure 4 Fit wire form on handle.
Figure 5 Add oil to engine crankcase. Do not
attempt to start engine without adding
oil.
Yellow Oil
Fill Cap
Figure 3 Insert the carriage bolts and attach the
plastic knobs.
colder 32°F warmer
5W30 SAE 30
Figure 2 Attach the handle to the handle
supports.
Make sure the
holes on the
handle are
aligned with
the holes on
the handle
supports
Handle
Handle
Supports
Generac Portable Products 2300PSI High Pressure Washer
Page 8
The manufacturer recommends fresh, clean unleaded
automotive gasoline with a minimum of 87 octane.
Use clean 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 (over 30 days).
Clean area around fuel fill cap, remove cap.
(Figure 6).
Add UNLEADED regular gasoline, slowly, to
fuel tank. Use a funnel to prevent spillage.
Install fuel cap and wipe up any spilled gasoline.
Note: Some fuels, called oxygenated or reformulated
gasolines, are gasoline blended with alcohols or
ethers. Excessive amounts of these blends can
damage the fuel system or cause performance
problems. If any undesirable operating systems
occur, use gasoline with a lower percentage of
alcohol or ether.
Connect Hose and Water Supply to Pump
IMPORTANT: You must assemble the nozzle
extension and attach all hoses before you start the
engine. Starting engine without all hoses connected
and water supplied will damage pump.
Uncoil high pressure hose and attach hose quick
connect coupler to the fitting on the spray gun
(Figure 7). To engage the fitting, pull back on the
coupler collar, insert the gun fitting, and release
the collar. Pull on the gun to make sure it is
securely in place.
Similarly, attach other end of the high pressure
hose to the high pressure quick connect fitting
on the pump (Figure 8). Pull on the hose to
make sure it is securely attached to the pump.
8
Figure 8 Connect high pressure hose to pump.
Figure 7 Connect high pressure hose
to spray gun.
Figure 6 Add gasoline to fuel tank.
Fuel Cap
Connect High Pressure
Hose Here
Coupler Collar
Connect High Pressure
Hose Here
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WARNING! You must provide a water supply
with a minimum flow of 3.2 gallons per minute
or damage to the pump will occur.
Before you connect your garden hose to the
water inlet, inspect the Inlet Screen (see Figure
9). Clean the screen if it contains debris or have
it replaced if damaged. Do not run the pressure
washer if the inlet screen is damaged.
Connect garden hose to water inlet. Tighten by
hand (Figure 9).
Turn ON the water (open valve completely).
Squeeze trigger on gun to purge pump system of
air and impurities.
CAUTION! Before starting the pressure
washer, be sure you are wearing adequate
eye protection.
Attach nozzle extension to spray gun. Tighten by
hand (Figure 10).
CHECKLIST BEFORE STARTING
ENGINE
If you have reached this point, look back over the
assembly to see if you have performed 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
damage 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 10 Connect nozzle extension
to spray gun.
Figure 9 Connect garden hose to water inlet and
turn ON the water.
Check Screen for Damage
Generac Portable Products 2300PSI High Pressure Washer
Page 10
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.
This pressure washer requires a water source
that flows at least 3.2 gallons per minute. Do not
attempt to siphon water from a nonpressurized container. Place the pressure
washer close enough to an outside water source
so that no more than 50' of garden hose is
needed.
Check that the high pressure hose is tightly
connected to the spray gun and to the pump.
See ASSEMBLY section for illustrations.
Connect the garden hose to water inlet on the
pressure washer pump and turn the water on
all the way.
IMPORTANT: Do not run pump without the water
supply connected and turned on. You must follow this
caution or the pump will be damaged.
Set choke lever to Choke position. Note: This
is a multi-position choke.
Move the throttle control lever to the Fast
position.
Note: For a warm engine, be sure the throttle control
is in the Fast position and the choke lever is in the
Run position.
Turn the fuel shutoff valve to the On 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 stream.
Continue to hold trigger until you have a steady
stream of water and no air remains.This will
make it easier to pull start the engine. Release
the trigger.
Apply the safety latch to the spray gun trigger
(Figure 11).
Grasp rope handle and pull slowly until you feel
some resistance. Then pull cord rapidly to
overcome compression, prevent kickback and
start the engine. Let rope return to starter slowly.
Note: Always keep the throttle control in the Fast
position when operating the pressure washer.
When the engine starts, gradually move the
choke control from 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,
move the choke control to the Run position and pull
the recoil starter handle rapidly (Max. 3 pulls).
How to Stop Your Pressure Washer
Important: Do Not move the choke control to
Choke position to stop the engine. Backfire or
engine damage may occur.
Move the throttle control to the Idle or Slow
position.
Wait for the engine to idle down.
Move the throttle control to the Off position.
Close the fuel shutoff valve.
Squeeze trigger on the spray gun to relieve
pressure in the hose. Simply shutting off the
engine will not release pressure in the system.
Note: A small amount of water will squirt out when
you release the pressure.
10
Figure 11 Safety Latch.
Safety Latch
Generac Portable Products 2300PSI High Pressure Washer
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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,
adjust pressure, apply detergent. and rinse.
How to Use the Adjustable Nozzle and
Adjust Pressure
DANGER! Never adjust spray pattern when
spraying. Never put hands in front of nozzle to
adjust spray pattern.
Slide the nozzle forward for low pressure. Slide
the nozzle backward for high pressure (Figure
12).
Twisting the nozzle from side to side adjusts the
spray pattern from a narrow jet spray to a fan
pattern.
Point the nozzle toward the ground and press
the trigger to test the pattern.
Located on the top of the pump is a pressure
control knob. You can increase and decrease the
pressure of the spray by turning the knob
counterclockwise or clockwise respectively
(Figure 13).
Figure 12 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 13 Pressure control knob.
Pressure Control
Knob
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Applying Detergent with the Adjustable
Nozzle
IMPORTANT: Use soaps designed specifically for
pressure washers. Household detergents could
damage the pump.
To apply detergent follow these steps:
Review the use of adjustable nozzles on Page
11.
Prepare the detergent as instructed.
Hang the detergent solution on the wireform
hook, as shown in Figure 14.
Place filter end of chemical injection tube into
detergent container (Figure 14).
Slide adjustable nozzle forward to low pressure
mode. Detergent cannot be applied with nozzle
in high pressure position.
IMPORTANT: Water source MUST be turned on.
Make sure garden hose is connected to water
inlet. Check that high pressure hose is
connected to spray gun and pump (see
ASSEMBLY), and start engine.
Apply detergent to dry surface, starting from
bottom and working up to avoid streaking.
Allow detergent to soak in for 3-5 minutes before
washing and rinsing. Reapply to prevent drying
For washing, start at lower portion of area to be
washed and work upward, using long, even,
overlapping strokes.
CAUTION! Keep chemical injection tube from
coming in contact with hot muffler. When
inserting filter into cleaning agent bottle, route
tube to keep it from inadvertently contacting
hot muffler.
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 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 and wait
for detergent to clear.
Note: You can also stop detergent from flowing by
simply removing the chemical injection tube from the
bottle.
Keep the spray gun a safe distance from the
area you plan to spray.
Apply a high pressure spray to a 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 top of area to be rinsed, working down
with the same overlapping strokes you used for
cleaning.
For most effective cleaning, keep spray nozzle
between 8 to 24 inches away from cleaning
surface.
If you get spray nozzle too close, especially
using high pressure mode, you may damage the
cleaning surface.
Do not get closer than 6 inches when cleaning
automobile tires.
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 140145°F. When the water
reaches this temperature, the automatic cool down
system engages and cools the pump by discharging
the warm water onto the base of the unit. This
system prevents internal damage to the pump.
Figure 14 Insert the small filter into container of
cleaning solution.
Generac Portable Products 2300PSI High Pressure Washer
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GENERAL MAINTENANCE
RECOMMENDATIONS
The warranty of the high pressure washer does not
cover items that have been subjected to operator
abuse or negligence. To receive full value from the
warranty, 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 adjustments in the Service and Adjustments
section of the engine owners manual should be
made at least once each season.
BEFORE EACH USE
Check engine oil level.
Check water inlet screen for damage.
Check high pressure hose for leaks.
Check chemical injection tube and filter for
damage.
Check gun and wand assembly for leaks.
PRESSURE WASHER
MAINTENANCE
Check and Clean Inlet Screen
Examine screen on the water inlet. Clean if the
screen is clogged or replace 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 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 meets the maximum pressure rating
of your pressure washer.
Check Gun and Wand
Examine hose connection to gun and make sure it is
secure. Test trigger by pressing it and making 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.
Check In-Line Filter
Refer to Figure 15 and service the in-line filter if it
becomes clogged, as follows:
1. Detach gun and lance from high pressure hose.
Detach lance from gun and remove o-ring and
screen from lance. Flush the screen, gun and
lance 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 lance. 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 lance to the spray gun, as
described earlier in this manual.
Figure 15 In-Line Filter Assembly.
Lance
In-line Filter
O-ring
Generac Portable Products 2300PSI High Pressure Washer
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14
Check and Clean Chemical Injection Tube
Examine the filter on the chemical injection tube and
clean if clogged. The tube should fit tightly on barbed
fitting. Examine tube for leaks or tears. Replace the
filter or tube if either is damaged.
If you have used the chemical injection tube you must
flush it with clean water before stopping the engine.
Place the small filter end of the chemical
injection tube in a bucket of clean water.
Slide the adjustable nozzle forward.
Squeeze the spray gun trigger for two minutes to
flush the chemical injection tube.
Shut off the engine.
Important: Simply shutting OFF engine will not release
pressure in the system. When engine has shut down,
squeeze the trigger on the gun to relieve the
pressure in the hose.
Purge Pump of Air and Contaminants
To remove the air from the pump, follow these
steps:
Set up the pressure washer as described in the
ASSEMBLY section and connect the water
supply.
Remove the wand extension from the gun.
Squeeze the trigger on the gun and hold.
To remove any contaminants from the pump,
follow these steps:
Set up the pressure washer as described in the
ASSEMBLY section, and connect the water
supply.
Remove the nozzle extension from 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.
Nozzle Maintenance
If the adjustable nozzle becomes restricted or
clogged with foreign materials, such as dirt, excessive
pump pressure may develop. If this nozzle becomes
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
adjustable nozzle.
If the adjustable nozzle becomes clogged or partially
restricted, immediately 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 from the gun.
Adjust the nozzle extension to the stream
position.
Remove nozzle from the end of the wand
extension (Figure 16) using a 2mm or 5/64 allen
wrench (like the one included in the kit).
Use the wire included in the kit (Figure 17) or a
small paper clip to free the foreign materials
clogging or restricting the nozzle.
Figure 16 Remove nozzle.
Figure 17 Clean the nozzle.
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15
Remove additional debris by back flushing water
through wand extension (Figure 18). Back flush
between 30 to 60 seconds. Turn nozzle
extension to stream spray and move nozzle
forward and backward while flushing.
Reinstall nozzle into the wand extension. DO
NOT overtighten.
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 owners manual for instructions on
how to properly maintain the engine.
Service and Adjustments
See the engine owners manual for instructions on
how to properly service and adjust the engine.
PREPARING THE UNIT FOR
STORAGE
Water should not remain in the unit for long periods of
time. Sediments of 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 chemical 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 mode. Flush for two minutes.
2. Shut off the engine and let it cool, then remove
all hoses.
3. Place throttle lever in STOP position.
CAUTION! Be sure throttle lever is in STOP
position before you continue. If you start
engine without proper water supply
connected, you can damage the pump.
4. Empty the pump of all pumped liquids by pulling
recoil handle about 6 times. This should remove
most of the liquid in the pump.
NOTE: To protect unit from freezing temperatures,
pour RV Antifreeze fluid (antifreeze without any
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
Using a fuel additive such as STA-BIL®, or
equivalent, will prevent the build up of gum and
varnish in the fuel system. Refer to the engine
owners manual for further information.
Figure 18 Backflush nozzle.
Generac Portable Products 2300PSI High Pressure Washer
Page 16
TROUBLESHOOTING
16
Problem Cause Solution
Pump has the following
problems:
Failure to produce adequate
pressure, erratic pressure,
chattering, loss of pressure
or low water volume.
1. Adjustable nozzle in low
pressure.
2. Water inlet is blocked.
3. Inadequate water supply.
4. Garden hose is kinked or
leaking.
5. Clogged water inlet screen.
6. Water supply is over 140°F.
7. Outlet hose is blocked or leaks.
8. Gun leaks.
9. Nozzle is obstructed.
10. Pump is faulty.
1. Pull nozzle back to high pressure
position.
2. Clear inlet.
3. Make sure you have at least a 2.5
GPM flow for your garden hose.
4. Straighten garden hose or patch
leak.
5. Check and clean water inlet
screen.
6. Provide cooler water supply.
7. Clear blocks in outlet hose.
Replace immediately if leaking.
8. Use o-ring manitenance kit to
replace worn o-rings.
9. Clear nozzle.
10. Contact Generac service facility.
Detergent fails to mix with
spray.
1. Chemical injector hose is not
submerged.
2. Chemical injector hose is
clogged.
3. Adjustable nozzle is in high
pressure mode.
1. Insert chemical line into
detergent.
2. Clean or replace filter/chemical
injector hose.
3. Put adjustable nozzle into low
pressure mode.
Engine runs well when not
spraying but bogs down
when trigger is squeezed.
1. Engine speed is too slow. 1. Contact Briggs & 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. Excessively rich fuel mixture.
9. Intake valve stuck open or
closed.
10. Engine has lost compression
1. Fill crankcase to proper level.
2. Clean or replace air filter.
3. Fill fuel tank.
4. Drain gas tank; fill with fresh fuel.
5. Connect wire to spark plug.
6. Replace spark plug.
7. Drain as tank fill with fresh fuel.
8. Contact Briggs & Stratton service
facility.
9. Contact Briggs & Stratton service
facility.
10. Contact Briggs & 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.
1. Dirty air filter. 1. Replace air filter.
Engine hunts or falters.
1. Engine is not operating properly. 1. Contact Briggs & Stratton service
facility.
Generac Portable Products 2300PSI High Pressure Washer
Page 17
17
NOTES
Generac Portable Products 2300PSI High Pressure Washer
Page 18
18
EXPLODED VIEW PRESSURE WASHER
Generac Portable Products 2300PSI High Pressure Washer
Page 19
19
Item Part # Qty Description
1 AB1770 1 BASE
2 67989 10 NUT, M8 Flange Serr.
3 42909 2 HHCS, M8 1.25 x 30
4 50190 2 WASHER, M8 Flat
5 27007 2 MOUNT, Donut Type Vibration
6 20566 1 DECAL, Generac #1-800
7 B2192 1 DECAL, Generac
8 B2150 1 HOOK , Gun
9 B2516 1 CAP, Vinyl (black)
10 B2043 7 BOLT, 5/16"-18 x 1-3/4"
Carriage
11 B3760 1 DECAL, Logo
12 B1983 1 HANDLE
13 B1631A 1 BILLBOARD, Plastic
14 B1932 1 DECAL, Instructions
15 99583 8 NUT, Flange Lock 5/16"-18
16 B1981 2 SUPPORT, Handle
20 21217 4 MOUNT, Rubber Shock
21 B1232 1 CLAMP, Hose 7/16 Dia.
22 32713 1 SCREW, Taptite #10-32 x 5/8"
23 A1040D 1 HOSE, 4-1/2 Chemical Clear
24 A1041 1 FILTER, Chemical Hose
25 70453 1 TAG, Warning Oil
26 97178 2 KNOB, Handle 1/4" - 20 PW
27 31669 2 BOLT, 1/4" - 20 x 1-3/4"
Carriage
28 B1760 2 ASSEMBLY, 10" Tire & Wheel
29 75402 2 PUSHNUT, .50" Dia.
30 B4095 1 SHEET, Info.
31 B3297 1 MANUAL,Engine
32 B4730 1 MANUAL
Item Part # Qty Description
33 23139B 1 KEY, 3/16" sq. x 1-1/2" Lg.
34 95531 4 SHCS, 5/16" - 24 x 3/4"
35 B3699A 1 ASSEMBLY, Pump
36 B4757 1 CAP, Inlet Quick Connect
37 89647A 1 CONNECTOR, Garden Hose
38 97098 1 CAP, Garden Hose Inlet
39 B1982 1 BUMPER
40 NSP 1 ENGINE
41 B3057 1 KIT, O Ring
42 B4719 1 HOSE, High Pressure
43 87815 1 GOGGLES, Safety
44 B4720 1 GUN, High Pressure
45 B3335C 1 LANCE, Nozzle Hi/Lo
46 97566 1 TAG,Nozzle Instructions
47 B2168A 1 HANGER, Hose, Gun, Jug
48 B1460 2 CAP, Vinyl (black)
49 B2163 1 KIT, Nozzle Cleaning
50 B2203 1 KIT, Handle Fastening
51 92661 1 NOZZLE, 1.20 Blue
Replacement
52 B3213 1 VALVE, Thermal Relief
53 92479 4 LOCK WASHER, Ribbed
54 88681 1 CARD, Owner Registration
55 85883 1 STA-BIL
56 BB3061B 1 OIL
57 83831 1 BROCHURE, Stabil
58 81886 1 DECAL, Stabil
59 B4099 1 DECAL, IMP. Purge Air
60 95458 1 QUICK DISCONNECT, Hose
to Gun
PARTS LIST PRESSURE WASHER
Generac Portable Products 2300PSI High Pressure Washer
Page 20
20
EXPLODED VIEW PUMP
Generac Portable Products 2300PSI High Pressure Washer
Page 21
21
Item Part # Qty Description
1 100B3699 1 Manifold
2 165B3169 6 O-ring 12.42 x 1.78
3 102B3699 6 Valve unit
4 103B3699 6 O-ring 5.60 x 1.78
5 104B3699 3 Valve cap
6 105B3699 1 Unloader valve screw
7 106B3699 3 O-ring 9.92 x 2.62
8 107B3699 1 Valve seat
9 108B3699 1 Spacer
10 119B3699 1 Spring
11 110B3699 1 Unloader piston
12 111B3699 1 Seal
13 112B3699 1 O-ring
14 113B3699 1 Anti-extrusion ring
15 114B3699 1 Unloader stem
16 10892293P 1 O-ring
17 116B3699 1 Guide
18 10292293P 3 O-ring
19 118B3699 1 Regulating knob
20 119B3699 3 Oil seal
21 120B3699 4 Screw, M6 x 30
22 12692294P 6 Screw, M6 x 30
23 122B3699 3 Head ring
24 123B3699 3 O-ring
25 120B3169 6 O-ring
26 125B3699 3 Packing
27 126B3699 3 Retainer 15mm
28 119B3169 3 O-ring
29 128B3699 3 Spring 33 x 56
30 129B3699 3 Piston assembly
31 130B3699 3 Spring plate
32 131B3699 3 Spring plate retainer
33 132B3699 2 Roller bearing
Item Part # Qty Description
34 148B3169 1 Screw, M8 x 28
35 134B3699 1 Wobble plate
36 135B3699 1 Bearing bushing
37 136B3699 1 Crankcase
38 100B3699A 1 Cap, Brass
39 138B3699 1 Snap ring
40 139B3699 1 Oil seal
41 12092293P 1 O-ring
42 141B3699 1 Piston guide
43 142B3699 1 Plug, M14 x 1.5 x 9mm
44 143B3699 1 Plug, 10mm
45 144B3699 1 O-ring
46 100B3169A 1 Nipple, 3/8 NPT
47 146B3699 1 Orifice, 1.8mm
48 147B3699 1 Plug, 3/8"
49 148B3699 4 Screw, M8 x 70
50 149B3699 1 Screw, M8 x 25
51 150B3699 1 Inlet manifold
60 177B3169 1 O-ring
61 178B3169 1 Spring, conical
62 179B3169 1 Ball, 7/32"
63 11492293P 1 O-ring
64 197B3169 1 Hose barb
65 112B3169 1 O-ring
66 157B3699 1 Injector housing
69 12492293P 4 Washer
70 159B3699 4 Screw
71 160B3699 1 Gas mounting flange
72 161B3699 1 Crankshaft
73 10692293P 4 Washer
74 12692293P 4 Screw
75 164B3699 1 Vent plug
Repair Kits
Description Part # Items included # Assys
in kit in Kit
High Pressure Seal 201B3699 23, 24, 25, 26, 27, 28 1
Check Valve C / O Ring 202B3699 4, 5 4
Check Valve / O Ring 203B3699 2, 3 6
Oil Seal 204B3699 20 3
Unloader 205B3699 6, 7, 8, 9, 10, 11, 12, 13, 14,
15, 16, 17, 18 1
PARTS LIST PUMP
Generac Portable Products 2300PSI High Pressure Washer
Page 22
NOTES
22
Generac Portable Products 2300PSI High Pressure Washer
Page 23
NOTES
23
Generac Portable Products 2300PSI High Pressure Washer
Page 24
Limited Pressure Washer Warranty
Generac Portable Products LLC (hereafter referred to as GENERAC LLC) warrants to the original retail
purchaser, the pressure washer manufactured by GENERAC LLC 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, GENERAC LLC will, at its option, repair or replace any part which, upon
examination by GENERAC LLC or GENERAC LLC 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, GENERAC LLC 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 GENERAC LLC'S NEGLIGENCE. GENERAC LLC 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 GENERAC LLC authorized warranty service facility or call 1-877-544-0982.
Warranty service can be performed only by a GENERAC LLC 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 LLC
Jefferson, Wisconsin U.S. A.
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