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)
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
3
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
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.
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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
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.
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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
Generac Portable Products 2300PSI High Pressure Washer
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