Page 1
Model No. 12940 (2200 psi High Pressure Washer) Manual No. B3856 Revision 2 (7/20/1999)
Visit our Generac website: www.generac-portables.com
Problems?
Questions?
Before taking your unit
back to the store,
call the pressure washer
helpline at
1-800-270-1408
M-F 8-5 CT
GENERAC
The Reliable Ones
This is the safety alert symbol. It is used to alert you to potential personal injury hazards. Obey all safety
messages that follow this symbol to avoid possible injury or death.
2200 PSI
Pressure Washer Owner’s Manual
Page 2
Generac Portable Products 2200 PSI High Pressure Washer
2
CAUTION! Always 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.
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!
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Generac Portable Products 2200 PSI High Pressure Washer
3
High pressure spray can cause paint chips or other
particles to become airborne and fly at high
speeds.
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 stream of water that this
equipment produces can pierce skin and its
underlying tissues, leading to serious injury and
possible amputation.
Always wear eye protection when you use this
equipment or when you are in the vicinity where
the equipment is in use.
Operate the pressure at no more than the PSI fluid
pressure rated for your pressure washer.
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 the jet spray mode.
Keep the hose connected to machine or the spray
gun while the system is pressurized. Disconnecting
the hose while the unit is pressurized is dangerous.
Hold the spray gun firmly in your hand before you
start the unit. Failure to do so could result in an
injury from a whipping spray gun. Do not leave the
spray gun unattended while the machine is
running.
The cleaning area should have adequate slopes
and drainage to reduce the possibility of a fall due
to slippery surfaces.
Keep water spray away from electric wiring or fatal
electric shock may result.
Do not secure trigger gun in the pullback (open)
position.
Do not bypass 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 or you
could be severely burned.
Operate and store this unit on a stable surface.
High pressure hose can develop leaks from wear,
kinking, abuse, etc. Water spraying from a leak is
capable of injecting material into skin. Inspect hose
each time before using it. Check all hoses for cuts,
leaks, abrasions or bulging of cover, or damage or
movement of couplings. If any of these conditions
exist, replace hose immediately. Never repair high
pressure hose. Replace it with another hose that
meets minimum pressure rating of your pressure
washer.
IMPORTANT! SAFETY RULES IMPORTANT!
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Generac Portable Products 2200 PSI High Pressure Washer
4
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, call the pressure washer helpline at
1-800-270-1408.
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 . . . . 2200 psi
Flow Rate . . . . . . . . . 2.5 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 . . . . . Honda GC 160 QHA
Rated Horsepower . 5.0
Displacement . . . . . . 160cc
Spark Plug
Type . . . . . . . NGK:BPR6ES
Set Gap To: . . 028-.031 inch (.7-.8mm)
Gasoline Capacity . . 1.8 U.S. quarts
Oil . . . . . . . . . . . . . . SAE 10W30
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 muffler with a spark arrestor,
it must be maintained in effective working order.
You can order a spark arrestor through your
authorized Honda service dealer.
Model Number 12940
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.
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Generac Portable Products 2200 PSI High Pressure Washer
5
Chemical Nozzle
High Pressure Nozzles
Nozzle Extension with
Quick Connect Fitting
Choke Rod
High Pressure Outlet
Pump equipped with
Automatic Cool Down
System
Spray Gun
Water Inlet
Oil Fill Cap
Pressure Control Knob
Fuel Tank
Recoil Starter
Throttle Lever
Air Cleaner
Chemical Injection Tube
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 location of the controls.
Save this manual for future reference.
Air Cleaner Dry type filter element limits the amount of
dirt and dust that gets in the engine.
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.
Chemical Injection TubeUsed to siphon chemical from
the detergent container to the pump.
Chemical Nozzle Use this nozzle to apply chemical.
Choke Rod Prepares a cold engine for starting.
Fuel Tank Fill engine with regular unleaded gasoline
here.
Goggles (not shown) Always use the goggles or other
eye protection when running your pressure washer.
High Pressure Hose (not shown) Connect one end to
water pump and the other end to spray gun. Store hose on
hook on the rear of the unit
High Pressure Nozzles Use these nozzles to clean and
scour a surface. These nozzles vary the spray pattern of the
high pressure stream and cannot be used to apply chemical.
High Pressure Outlet Connection for high pressure hose.
Nozzle Extension with QuickConnect Fitting You must
attach this to the spray gun to use the nozzles. The
quickconnect fitting lets you quickly exchange the four
provided nozzles to adjust the spray pattern of the high
pressure spray and apply chemical.
Oil Fill Cap Fill engine with oil here. See page 7 for oil
requirements.
Pressure Control Knob Varies the pressure of the high
pressure spray.
Pump Develops high pressure.
Recoil Starter Used for starting the engine manually.
Spray Gun Controls the application of water onto
cleaning surface with trigger. Includes safety latch.
Throttle LeverSets engine in starting mode for recoil
starter and stops a running engine.
Water Inlet Connection for garden hose
.
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Generac Portable Products 2200 PSI High Pressure Washer
6
WARNING! Read entire owners manual
before you attempt to assemble or operate
your new pressure washer.
REMOVE PRESSURE
WASHER FROM CARTON
Remove the handle and parts box included with
pressure washer.
Slice two corners at the end of carton from top to
bottom so the panel can be folded down flat, then
remove all packing material.
Roll pressure washer out of carton.
Carton Contents
Items in the carton include:
Main Unit
High Pressure Hose
Handle
Parts Box (which includes the following):
Oil Bottle
Goggles
Nozzle Cleaning Kit
Bag Containing 4 MultiColored Nozzles
ORing Maintenance Kit
Owners & Engine Manual
Spray Gun
Nozzle Extension with QuickConnect Fitting.
Parts Bag (hardware to attach handle)
If any of the above parts are missing or damaged,
call the pressure washer helpline at
18002701408.
PREPARE 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
18002701408.
Perform these tasks to prepare unit:
Attach the handle to the main unit.
Add oil to the engine.
Add fuel to the fuel tank.
Connect the high pressure hose to the spray gun
and the pump and connect the water supply to the
pump.
Attach Handle to Pressure Washer
To attach handle to the pressure washer (Figure 1):
Slowly tip the pressure washer forward and let it
gently rest on the front bumper.
Align the holes on the handle with the holes on the
base.
Insert the carriage bolts provided to hold the handle
in place.
Secure handle to the pressure washer using the
four provided flange nuts.
Slowly tip the pressure washer back in place and
insert the multicolored nozzles in the spaces
provided in the handle.
Figure 1 Attach Handle to Pressure Washer
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Generac Portable Products 2200 PSI High Pressure Washer
7
Add Engine Oil
WARNING! Any attempt to crank or start the
engine before it has been properly serviced
with the recommended oil will result in an
engine failure.
Use only high quality detergent oil rated with API
service classification SF or SG rated 10W30. Do
not use SAE 10W40 oil.
Place the pressure washer on a level surface.
Clean the area around oil fill and remove the oil
dipstick (Figure 2).
Wipe the dipstick clean.
Insert and remove the dipstick without screwing it
into the filler neck. Check the oil level shown on the
dipstick.
If the oil level is low, fill to the edge of the oil filler
hole with the recommended oil. DO NOT
OVERFILL.
Reinstall the oil dipstick, hand tighten securely.
Note: Check Oil Often During Engine Breakin.
Add Gasoline
DANGER! Never fill fuel tank indoors. or
when engine is running or hot. Do not smoke
when filling fuel tank.
WARNING! Always fill tank to about 1/2"
below the bottom of the filler neck to provide
space for fuel expansion. Wipe away fuel
spillage before starting engine.
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.
Clean the area around the fuel fill cap, remove the
cap (Figure 3).
Add regular UNLEADED gasoline, slowly, to fuel
tank. Use a funnel to prevent spillage.
Install the fuel cap and wipe up any spilled
gasoline.
Connect Hose and Water Supply to
Pump
IMPORTANT: You must assemble the wand and
attach all hoses before you start the engine. Starting
engine without all hoses connected and water
supplied will damage the pump.
Uncoil the high pressure hose and attach one end
of the hose to the base of the spray gun.
(Figure 4). Tighten by hand.
Figure 2 Add Oil to Engine Crankcase
Oil Fill Cap/Dipstick
Upper Limit
Lower Limit
Figure 3 Add Regular Unleaded Gasoline to Fuel
Tank.
Figure 4 Connect High Pressure Hose to Fuel Tank
Connect high pressure
hose here.
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Generac Portable Products 2200 PSI High Pressure Washer
8
Attach the other end of the high pressure hose to
the high pressure outlet on the pump (Figure 5).
Tighten by hand.
Before you connect your garden hose to the water
inlet, inspect the Inlet Screen (Figure 6). Clean the
screen if it contains debris or have it replaced if
damaged. DO NOT RUN THE PRESSURE
WASHER IF THE SCREEN IS DAMAGED.
Run water through your garden hose for 30
seconds to clean out any debris .
Connect the garden hose to the water inlet. Tighten
by hand (Figure 6).
Turn ON the water.
Squeeze the trigger on the gun to purge the pump
system of air and impurities.
CAUTION: Before starting the pressure
washer, be sure you are wearing adequate
eye protection.
Attach the nozzle extension to the spray gun.
Tighten by hand (Figure 7).
CHECKLIST BEFORE
STARTING ENGINE
Review the assembly to ensure 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 the proper level
in the engine crankcase before trying to start the
pressure washer.
Add the proper gasoline to fuel tank.
Provide a proper water supply (not to exceed
140°F).
Be sure to read the Safety Rules and Operation
sections before using the pressure washer.
Figure 6 Connect the Garden Hose to Water Inlet
and Turn ON the Water.
Inspect inlet
screen, do not use
if damaged, clean
if dirty.
Figure 7 Connect Nozzle Extension to Spray Gun
Figure 5 Connect High Pressure Hose to Pump
Connect high
pressure hose here.
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Generac Portable Products 2200 PSI High Pressure Washer
9
HOW TO USE 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 Engine
The best way to start the enginepowered pressure
washer for the first time is to follow these instructions
stepbystep. This starting information also applies
whenever you start the engine after you have let the
pressure washer sit idle for at least a day.
Place the pressure washer in an area close enough
to an outside water source that can flow at a rate of
3.0 gallons per minute.
Check that the high pressure hose is tightly
connected to the spray gun and to the pump. See
Preparing the Pressure Washer for First Use on
page 6.
Connect the garden hose to the water inlet on the
pressure washer pump and turn on the water.
WARNING! Do not run the pump without the
water supply connected and turned on. You
must follow this caution or the pump will be
damaged.
Pull the Choke to the CLOSED position (full choke)
(Figure 8).
Move the Throttle Control Lever to the Fast
position (Figure 9).
NOTE: For a warm engine, be sure the choke is in
the OPEN position (no choke).
Squeeze the trigger on the spray gun (make sure
the nozzle is in low pressure mode) to relieve the
air pressure caused by turning ON the water. Water
will spew out of the gun in a thin stream. Hold the
trigger until a steady stream of water appears.
Release the trigger.
Apply the safety latch to the spray gun trigger
Grasp the rope handle and pull slowly until you feel
some resistance. Then pull the cord rapidly to
overcome compression, prevent kickback and start
the engine. Let the rope return to the starter slowly.
NOTE: Always keep the Throttle Control Lever in the
Fast position when operating the pressure washer.
If the engine fails to start repeat above steps.
If the choke was pulled to the CLOSED position to
start the engine, slowly push it to the OPEN
position as soon as the engine runs smoothly.
How to Stop Pressure Washer
Move the Throttle Control Lever to the Slow
position.
Wait for the engine to idle down.
Move the Throttle Control Lever to the Stop position.
Simply shutting off the engine will not release
pressure in the system. Squeeze trigger on the
spray gun to relieve pressure in the hose.
NOTE: A small amount of water will squirt out when
you release the pressure.
Figure 8 Choke positions
Choke Rod
Open
Closed
Figure 9 Throttle control positions
Throttle Lever
Fast
Slow
Stop
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Generac Portable Products 2200 PSI High Pressure Washer
10
How to Use the Nozzles
If you have any problems operating your pressure
washer, please call the pressure washer helpline at
1-800-270-1408.
DANGER! Never exchange nozzles without
locking the safety latch on the trigger.
The quickconnect on the nozzle extension allows
you to switch between four different nozzles. The
nozzles vary the spray pattern as shown below
(Figure 10).
Follow these instructions to change nozzles:
Engage the safety latch on the spray gun.
Pull back the collar on the quickconnect and pull
the current nozzle off. Store the nozzle in the space
provided on the control panel.
NOTE: For a more gentle rinse, select white 40°
nozzle. To scour the surface, select yellow 15° or red
0° nozzle. To apply chemical, select black 65° nozzle.
Pull back on the collar, insert the new nozzle and
release the collar. Pull on the nozzle to make sure
it is securely in place.
For most effective cleaning, keep the spray nozzle
between 8 to 24 inches away from the cleaning
surface. If you get the spray nozzle too close, you
may damage the cleaning surface.
Cleaning and Applying Chemical
WARNING! You must attach all hoses
before you start the engine. Starting the
engine without all the hoses connected and
without the water turned ON will damage the
pump.
IMPORTANT: Use soaps designed specifically for
pressure washers. Household detergents could
damage the pump.
To apply detergent follow these steps:
Review the use of the nozzles.
Prepare the detergent solution as required by the
manufacturer.
Hang the detergent solution container on the hook
at the rear of the pressure washer.
Place the small filter of the chemical injection tube
tube into the detergent container.
CAUTION! Keep the chemical injection tube
from coming in contact with the hot muffler.
This will damage the chemical injection tube.
When inserting the filter into a chemical bottle,
route the tube so as to keep it from
inadvertently contacting the hot muffler.
Make sure the black nozzle is installed on the
nozzle extension.
NOTE: Detergent cannot be applied with the high
pressure nozzles (White, Yellow, or Red).
Make sure the garden hose is connected to the
water inlet. Check that high pressure hose is
connected to spray gun and pump, then start
engine.
Apply the detergent to a dry surface, starting at
lower portion of area to be washed and work
upward, using long, even, overlapping strokes. Do
not allow the detergent to dry on. This will
prevent streaking.
Allow the detergent to soak in between 35
minutes before washing and rinsing. Reapply as
needed to prevent surface from drying.
Figure 10 Nozzles
White
Black
Yellow
Red
Low Pressure
Use to apply
chemical
Page 11
Generac Portable Products 2200 PSI High Pressure Washer
11
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.
After you have applied detergent, scour the
surface and rinse it clean as follows:
Apply Safety Latch to spray gun.
Remove the black chemical nozzle from the nozzle
extension.
Select and install the desired high pressure nozzle
following the instructions How to Use the Nozzles
on page 10.
Keep the spray gun a safe distance from the area
you plan to spray.
Increase or decrease the pressure of the spray by
turning the pressure control knob counterclockwise
or clockwise respectively (Figure 11). Use lower
pressure to wash items such a as a car or boat.
Use higher pressure to strip paint and degrease
driveways.
Apply a high pressure spray to an small area and
then check the surface for damage. If no damage
is found, you can assume it is okay to continue
cleaning.
Start at the top of the area to be rinsed, working
down with same overlapping strokes as you used
for cleaning.
Automatic Cool Down System
(Thermal Relief)
If you run the engine on your pressure washer for
35 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 ground. This system
prevents internal damage to the pump.
Figure 11 Pressure control knob
Pressure
Control Knob
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Generac Portable Products 2200 PSI High Pressure Washer
12
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 the full value from
the warranty, the operator must maintain the high
pressure washer as instructed in this manual.
Some adjustments will need to be made
periodically to properly maintain your high pressure
washer.
All adjustments in the Service and Adjustments
section of this manual should be made at least
once each season.
Once a year you should clean or replace the spark
plug and clean or replace the air filter and check
the gun and wand assembly for wear. A new spark
plug and clean air filter assure proper fuelair
mixture and help your engine run better and last
longer.
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 nozzle extension assembly for
leaks.
Rinse out garden hose to flush out debris.
PRESSURE WASHER
MAINTENANCE
Check and Clean Inlet Screen
Examine the screen on the water inlet. Clean it if the
screen is clogged or replace it if screen is damaged.
Check High Pressure Hose
The high pressure hose can develop leaks from
wear, kinking, or abuse. Inspect the hose each time
before using it. Check for cuts, leaks, abrasions or
bulging of cover, damage or movement of couplings.
If any of these conditions exist, replace the hose
immediately.
DANGER! Water spraying from a leak is
capable of injecting material into skin. Inspect
hose each time before using it. Never repair a
high pressure hose. Replace it with another
hose that meets the maximum pressure rating
of your pressure washer.
Check Chemical Injection Tube
Examine the filter on the detergent hose and clean if
clogged. The tube should fit tightly on the barbed
fitting. Examine the tube for leaks or tears. Replace
the filter or tube if either is damaged.
Check In-Line Filter
Refer to Figure 12 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 12 Clean In-Line Filter
Lance
Filter Screen
O-ring
Page 13
Generac Portable Products 2200 PSI High Pressure Washer
13
Check Gun and Nozzle Extension
Examine the hose connection to the gun and make
sure it is secure. Test the trigger by pressing it and
making sure it springs back into place when you
release it. Put the safety latch in the ON position and
test the trigger. You should not be able to press the
trigger.
Purge Pump of Air and
Contaminants
To remove the air from the pump, follow these
steps:
Set up the pressure washer as described in the
Preparing the Pressure Washer for Use and
connect the water supply.
Remove the nozzle extension from the gun.
Pull the trigger on the gun and hold.
To remove the contaminants from the pump,
follow these steps:
Set up the pressure washer as described in the
HOW TO USE YOUR PRESSURE WASHER
section, and connect the water supply.
Remove the nozzle extension from the gun.
Start the engine according to instructions in
OPERATION section.
Squeeze the trigger on the gun and hold.
When the water supply is steady and constant,
engage the safety latch and refasten the nozzle
extension.
Cleaning Chemical Injection Tube
If you have used the chemical injection tube you
must flush it with clean water before stopping the
engine.
Place the chemical injection tube in a bucket full of
clean water.
Flush for 12 minutes.
Shut off the engine.
IMPORTANT: Simply shutting OFF engine will not
release pressure in the system. When the engine has
shut down, squeeze the trigger on the gun to
relieve the pressure in the hose.
Nozzle Maintenance
If the nozzles becomes restricted or clogged with
foreign materials, such as dirt, excessive pump
pressure may develop. If the nozzles become
partially clogged, it can cause a pulsing sensation
during use. This generally is not a pump related
problem, but rather a clogged or partially restricted
nozzle.
If the nozzles become clogged or partially restricted,
immediately clean the nozzles with the kit included
with your pressure washer by following these
instructions:
Shut off the engine and turn off the water supply.
Remove the nozzle from the end of the nozzle
extension.
Use the wire included in the kit or a small paper
clip to free the foreign materials clogging or
restricting the nozzle (Figure 13).
Remove additional debris by rinsing out the nozzle.
Rinse between 30 to 60 seconds.
Reinstall the nozzle into the nozzle extension.
Reconnect the water supply, turn on the water, and
start the engine.
Test the pressure washer.
Figure 13 Nozzle Maintenance
Use wire here
to remove
debris.
Page 14
Generac Portable Products 2200 PSI High Pressure Washer
14
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 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 filter
into a pail of clean water while running pressure
washer with the black chemical nozzle. Flush for
one to two minutes.
2. Shut off the engine and let it cool, then remove
all hoses.
3. Place the throttle lever in STOP position.
WARNING! Be sure lever is in STOP
position before you continue. If you start
engine without proper water supply
connected, you can damage pump.
4. Empty the pump of all pumped liquids by pulling
the recoil handle about 6 times. This should
remove most of the liquid in the pump.
NOTE: To protect the unit from freezing
temperatures, draw RV antifreeze (no alcohol) into
the pump by pouring the antifreeze into a 3foot
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 Owners Manual for instructions on
how to properly store the engine.
Page 15
Generac Portable Products 2200 PSI High Pressure Washer
15
TROUBLESHOOTING
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 volume. 3. Inadequate water supply. 3. Provide 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 over 140°F. 6. Provide 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. Clean nozzle.
10. Pump is faulty. 10. Contact Generac service facility.
Detergent fails to mix with spray. 1. Chemical injection tube 1. Insert chemical injection tube into
is not submerged. detergent.
2. Chemical filter is clogged. 2. Clean or replace filter/detergent
siphoning tube.
3. High pressure nozzle attached. 3. Use low pressure, black chemical
nozzle to apply detergent.
Engine runs good at noload but bogs Engine speed is too slow. Move throttle control to FAST .
when load is added. position. If engine still bogs down
contact Generac service facility.
Engine will not start; or starts 1. Low oil level. 1. Fill crankcase to proper level.
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. Overchoking. 8. Open choke fully and crank
engine.
9. Excessively rich fuel mixture. 9. Contact Generac service facility.
10. Intake valve stuck open or closed. 10. Contact Generac service facility.
11. Engine has lost compression. 11. Contact Generac service facility.
Engine shuts down during operation. 1. Out of gasoline. 1. Fill fuel tank.
2. Low oil level. 2. Fill crankcase to proper level.
Engine lacks power. Dirty air filter. Replace air filter.
Engine hunts or falters. Choke is opened too soon. Move choke to halfway position
until engine runs smoothly.
Page 16
Generac Portable Products 2200 PSI High Pressure Washer
16
EXPLODED VIEW UNIT
Page 17
Generac Portable Products 2200 PSI High Pressure Washer
17
REPAIR PARTS PRESSURE WASHER
Item Part # Qty Description
1 BB1770A 1 BASE
2 B2043 8 BOLT, 5/16" - 18 x 1-3/4"
Carriage
3 99583 9 NUT, Hex Flange 5/16" - 18
4 B4164 1 DECAL, Instructions 1294-0
5 30809 4 GROMMET, 1/8" - 11/16"
6 67989 10 NUT, M8 Flange Serr.
7 27007 2 VIB MOUNT, Donut Type
8 50190 2 FLAT WASHER, 10GA - .34"
x 1"
9 42909 2 HHCS, M8 - 1.25 x 30
10 B2516 2 CAP, Black Vinyl .280"
11 B2150 1 HOOK, 5/16" Square Neck
Gun
12 NSP 1 ENGINE, 5HP
13 CB3861 1 HANDLE
14 B4163 1 DECAL, 4 QD Nozzles
15 B4162 1 DECAL, Unit 1294
16 B1760 2 ASSEMBLY, 10" Wheel & Tire
17 75402 2 PUSHNUT, .50"
18 B3339 1 HOSE, 1/4" x 25'
Item Part # Qty Description
19 CB3866 1 BUMPER
20 A1408 1 CAP, Garden Hose Connector
21 21424 1 CONNECTOR, Garden Hose
22 48031G 1 CLAMP, Hose 7/16" Dia.
23 A1041 1 FILTER, Chemical Hose
24 A1040D 1 HOSE, 54" Chemical Inject
25 97100 1 CAP, High Pressure Adapter
26 B3358 1 PUMP, Med 3/4" 6.0 Lift
Horizontal
27 21217 4 MOUNT, Rubber Shock
28 BB3061B 1 OIL BOTTLE
29 B2509 1 KIT, Nozzle Cleaning
30 B4150 1 KIT, Nozzles QD
31 B3263 1 GUN, 3200PSI M22-1.5
32 B3858 1 ASSY., Wand Ext. with QD
33 87815 1 GOGGLES, Safety
34 88681 1 CARD, Owners Registration
35 B3856 1 MANUAL, Owners
36 B3294 1 MANUAL, Honda
37 B4175 1 KIT, O-Ring Maintenance
38 B1288 1 TAG, PW Breather Cap
Page 18
Generac Portable Products 2200 PSI High Pressure Washer
18
EXPLODED VIEW PUMP
Page 19
Generac Portable Products 2200 PSI High Pressure Washer
19
REPAIR PARTS PUMP
Item Part # Qty Description
1 B2218 1 O-RING, 1.625 I.D. x .103
2 B2260 1 ADAPTER, Engine
3 B2217 4 O-RING, 0.239 ID x 0.070
4 B2261B 4 SCREW, Button Hd 5/16 - 24
x 3/4" Lg
5 96400 3 SPRING, Piston Return
6 99735 1 ASSEMBLY, Oil Breather
7 93790 1 O-RING, 114 x 119 x 2.6
8 40945 6 SHCS, M6 x 1.0 x 20mm Lg
9 93652 1 SPRING, Thermal By-Pass
10 95416 1 PISTON, Thermal By-Pass
11 93876 1 O-RING, 2.9 x 6.5 x 1.78
12 A2069 1 GASKET, Head
13 93644 1 ACTUATOR, Thermal By-
Pass
14 96053 3 SEAL, High Pressure
15 96015 3 RING, Bearing
16 B2665 6 WASHER, Steel Special
17 A2013 6 BOLT, Head M8 x 1.25 x
70mm Lg
18 97840 3 O-RING, Cap 15.6 x 19.16 x
1.78
19 97841 3 CAP, Outlet Port
20 B4263 0 KIT, Axial Cam 3/4" - 6.0 Lift
21 . . . . . . 2 BEARING SET, Thrust 15.5
22 . . . . . . 1 CAM, Axial 6.0 Lift
23 . . . . . . 1 ADAPTER, Engine
24 . . . . . . 1 WASHER, Thrust
25 . . . . . . 1 RETAINER, Push - On
26 . . . . . . 1 C-RING, Cam Retainer
27 B3478 0 KIT, Piston/Shoe
28 . . . . . . 3 ASSY., Ceramic Piston & Cap
29 . . . . . . 3 SHOE, Piston Pivot
30 B3508 0 KIT, Crankcase
31 . . . . . . 3 SPACER, Pilot
32 . . . . . . 3 SEAL, Oil Piston
33 . . . . . . 1 CRANKCASE, Pump
Item Part # Qty Description
34 B3509 0 KIT, Spacer Plate
35 . . . . . . 1 SPACER, Inlet Plate
36 . . . . . . 3 SEAL, High Pressure Dbl. Lip
37 B3513 0 KIT, Check Valve
38 . . . . . . 6 ASSY., Check Valve
39 . . . . . . 6 O-RING, Check Valve 12.4 x
15.56 x 1.78
40 B3479 0 KIT, Unloader Spindle
41 . . . . . . 1 CAP, Plastic
42 . . . . . . 1 SET SCREW, M6 x 8 Lg
43 . . . . . . 1 HANDLE, Unloader
44 . . . . . . 1 SPRING,Unloader
45 . . . . . . 1 ASSY., Spindle
46 B3507 0 KIT, Head
47 . . . . . . 1 ASSY., Pump Head (Med.
Frame)
48 B3510 0 KIT, High Pressure Outlet
49 . . . . . . 1 O-RING, Spindle 6 x 10 x 1.78
50 . . . . . . 1 SEAT, Ball Unloader
51 . . . . . . 1 BALL, Stainless Steel 9/32
Dia.
52 . . . . . . 1 SEAT, Trapped Line Pressure
53 . . . . . . 1 O-RING, 3.68 x 7.24 x 1.78
54 . . . . . . 1 VALVE, Shuttle Piston
55 . . . . . . 1 SPRING, Piston Trapped
Pressure
56 . . . . . . 1 VENTURI, Chemical
57 . . . . . . 1 O-RING, Venturi 10.82 x 14.38
x 1.78
58 B3829 0 ASSY., Chemical Injector
59 . . . . . . 1 BARB HOSE, Brass with
Nylon Insert
60 . . . . . . 1 BALL, 5.5 dia. Chemical
Injector
61 . . . . . . 1 SPRING, Chemical Injector
62 B3480 0 KIT, Complete Head
63 B3514 0 KIT, O-Ring/Seals
Item numbers 20, 27, 30, 34, 37, 40, 46, 48, 58, 62, and 63 are service kits and include all parts shown within
the box. Items previously described are not listed under the service kit number.
Page 20
LIMITED PRESSURE WASHER WARRANTY
(INCLUDES MASTER CONTRACTOR)
GENERAC PORTABLE PRODUCTS (hereafter referred to as the COMPANY) warrants to the original retail
purchaser, the pressure washer manufactured by the COMPANY to be free from defects in material and
workmanship for the period(s) set forth below from the date of original purchase. This warranty is not transferable.
The term original purchaser means the person for whom the pressure washer is originally purchased.
Warranty Schedules
Electric Power Washer 1 year (does not apply to commercial or rental applications)
CONSUMER* COMMERCIAL*
All Other Engine-driven Engine: Warranted solely by Warranted solely by
Engine Manufacturer Engine Manufacturer
Pump: 1 year 90 days
* NOTE: For the purpose of this warranty consumer use means personal residential household use by
original purchaser. Commercial use means all other uses, including rental, construction, commercial
and income producing purposes. Once a pressure washer has experienced commercial use, it shall
thereafter be considered a commercial use pressure washer for the purposes of this warranty.
During said warranty period, the COMPANY will, at its option, repair or replace any part which, upon examination
by the COMPANY or COMPANY-Authorized Dealers, is found to be defective under normal use and service**. All
transportation costs under warranty, including return to the factory if necessary, are to be borne by the purchaser
and prepaid by the purchaser.
** NORMAL WEAR: As with all mechanical devices, pressure washers need periodic parts service and
replacement to perform well. This warranty does not cover repair when normal use has exhausted the life
of a part or pressure washer pump.
This warranty does not include: Used products and demonstration equipment. Parts, such as GUNS, HOSES,
WANDS, NOZZLES or other wear items such as quick couplers, oil, gauges, belts, o-rings, filters, pump packing,
etc. Pumps which have been run without water supplied. Damage or malfunctions resulting from: accidents,
abuse, modifications, alterations, or improper servicing. Freezing or chemical deterioration. Normal maintenance
such as adjustments, fuel system cleaning and obstruction (due to chemical, dirt, carbon or lime, etc.).
THIS WARRANTY IS IN PLACE OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED,
SPECIFICALLY, THE COMPANY MAKES NO OTHER WARRANTIES AS TO MERCHANTABILITY
OR FITNESS FOR A PARTICULAR PURPOSE. THE DURATION OF ANY IMPLIED WARRANTIES
WHICH CANNOT BE DISCLAIMED IS LIMITED TO THE TIME PERIOD AS SPECIFIED IN THE
EXPRESS WARRANTY. LIABILITY FOR CONSEQUENTIAL, INCIDENTAL, OR SPECIAL
DAMAGES UNDER ANY AND ALL WARRANTIES IS EXCLUDED, EVEN IF SUCH DAMAGES ARE
A DIRECT RESULT OF THE COMPANY'S NEGLIGENCE. THE COMPANY ALSO DISCLAIMS ANY
RESPONSIBILITY FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES SUCH AS THE LOSS OF
TIME OR THE USE OF THE POWER EQUIPMENT, OR ANY COMMERCIAL LOSS DUE TO THE
FAILURE OF THE EQUIPMENT: AND ANY IMPLIED WARRANTIES ARE LIMITED TO THE
DURATION OF THIS WRITTEN
WARRANTY.
Some states do not allow limitations on how long an implied warranty lasts, or the exclusion or limitation of
incidental or consequential damages, so the above limitations or exclusions may not apply to you. This warranty
gives you specific legal rights and you may also have other rights, which vary from state to state.
For service, see your nearest COMPANY-Authorized warranty service facility or call 1-877-544-0982. Warranty
service can be performed only by a COMPANY-Authorized service facility. This warranty will not apply to service
at any other facility. At the time of requesting warranty service, evidence of original purchase date must be
presented.
Generac Portable Products
Jefferson, Wisconsin U.S. A.
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