Generac Portable Products 2400PSI User manual

2400PSI
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
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.
Model No. 1456-0 (2400 PSI High Pressure Washer) Manual No. 185780 Revision 1 (9/11/2000)
Visit our Generac website: www.generac-portables.com

Generac Portable Products 2,400 PSI High Pressure Washer
2
EQUIPMENT
DESCRIPTION
CONGRATULATIONS on your purchase of a
GENERAC high pressure washer. It has been designed,
engineered and manufactured to give you the best possible
dependability and performance.
This manual contains information for a high pressure
washer that operates at 2,400 PSI at a flow rate of
2.5 gallons per minute. This high quality residential system
features large 10” wheels, a pump equipped with an
automatic cool down system, a chemical injection system,
and an adjustable spray nozzle. The product is shipped with
safety goggles, a heavy duty 25’ hose, engine oil, and more.
Please read and retain this manual. The instructions will
enable you to assemble your unit without tools, and
maintain your high pressure washer properly.
Every effort has been made to ensure that the information
in this manual is both accurate and current. However,
Generac reserves the right to change, alter or otherwise
improve the product and its documentation at any time
without prior notice.
Should you experience any problem you cannot easily fix,
call the pressure washer helpline at 1-800-270-1408.
CUSTOMER
RESPONSIBILITIES
• Read and observe the safety rules.
• Follow regular schedule in maintaining, caring for and
using your high pressure washer.
• For off-season storage, review “Preparing The Unit For
Storage” on page 14.
SAFETY RULES
CAUTION! When setting up, transporting,
adjusting or making repairs to your high pressure
washer, always disconnect the spark plug wire from
the spark plug and place the wire where it cannot
contact spark plug.
DANGER! Engine exhaust gases contain DEADLY
carbon monoxide gas. This dangerous gas, if
breathed in sufficient concentrations, can cause
unconsciousness or even death. Operate this
equipment only in the open air where adequate
ventilation is available.
DANGER! Gasoline is highly FLAMMABLE and its
vapors are EXPLOSIVE. Do Not permit smoking,
open flames, sparks or heat in the vicinity while
handling gasoline. Avoid spilling gasoline on a hot
engine. Allow unit to cool for 2 minutes before
refueling. Comply with all laws regulating storage
and handling of gasoline.
Read this manual carefully and become familiar
with your pressure washer. Know its applications,
its limitations, and any hazards involved.
• Locate this pressure washer in areas away from
combustible materials, combustible fumes or dust.
• The high pressure equipment is designed to be used with
Generac authorized parts ONLY. If you use this
equipment with parts that Do Not comply with
minimum specifications, the user assumes all risks and
liabilities.
• Some chemicals or detergents may be harmful if inhaled
or ingested, causing severe nausea, fainting or poisoning.
The harmful elements may cause property damage or
severe injury.
•Do Not allow CHILDREN to operate the pressure
washer at any time.
The engine exhaust from this product
contains chemicals known to the State
of California to cause cancer, birth
defects, or other reproductive harm.
WARNING:

Generac Portable Products 2,400 PSI High Pressure Washer
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• Operate engine only at governed speed. Running the
engine at excessive speeds increases the hazard of
personal injury. Do Not tamper with parts which may
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.
•Never use a spray gun which does not have a trigger
lock or trigger guard in place and in working order.
• Keep the hose connected to machine or the spray gun
while the system is pressurized. Disconnecting the hose
while the unit is pressurized is dangerous.
•Never operate units with broken or missing parts, or
without protective housing or covers.
• Check the fuel system for leaks or signs of deterioration,
such as chafed or spongy hose, loose or missing clamps,
or damaged tank or cap. Correct all defects before
operating the pressure washer.
•Do Not spray flammable liquids.
• Use a respirator or mask whenever there is a chance that
vapors may be inhaled. Read all instructions with mask so
you are certain the mask will provide the necessary
protection against inhaling harmful vapors.
• Operate and store this unit on a stable surface.
•Never aim the gun at people, animals or plants. The high
pressure stream of water that this equipment produces
can pierce skin and its underlying tissues, leading to
serious injury and possible amputation.
•Never allow any part of the body to come in contact
with the fluid stream. Do Not come in contact with a
fluid stream created by a leak in the high pressure hose.
• Always wear eye protection when you use this equipment
or when you are in the vicinity where the equipment is in
use.
• High pressure spray can cause paint chips or other
particles to become airborne.
•Do Not operate the pressure washer above the rated
pressure.
•Never move the machine by pulling on the high pressure
hose. Use the handle provided on the unit.
• Always be certain the spray gun, nozzles and accessories
are correctly attached.
•Do Not secure the spray gun in the (open) position.
• High pressure spray may damage fragile items including
glass. Do Not point spray gun at glass when in the jet
spray mode.
• Hold the spray gun firmly in your hand before you start
the unit. Failure to do so could result in an injury from a
whipping spray gun. Do Not leave the spray gun
unattended while the machine is running.
• The cleaning area should have adequate slopes and
drainage to reduce the possibility of a fall due to slippery
surfaces.
• Keep water spray away from electric wiring or fatal
electric shock may result.
•Do Not by–pass any safety device on this machine.
• The muffler and engine heat up during operation and
remain hot immediately after shutting it down. Avoid
contact with a hot muffler or engine as you could be
severely burned.
• High pressure hose can develop leaks from wear, kinking,
abuse, etc. Water spraying from a leak is capable of
injecting material into skin. Inspect hose each time before
using it. Check all hoses for cuts, leaks, abrasions or
bulging of cover, or damage or movement of couplings. If
any of these conditions exist, replace hose immediately.
Never repair high pressure hose. Replace it with another
hose that meets maximum pressure rating of your unit.
• The muffler and air cleaner must be installed and in good
condition before operating the pressure washer. These
components act as spark arresters if the engine backfires.
In the State of California a spark arrester is required by law
(Section 4442 of the California Public Resources Code).
Other states may have similar laws. Federal laws apply on
federal lands.
NOTE: If you equip the muffler with a spark arrester, it
must be maintained in effective working order. You can
order a spark arrester through your authorized Honda
service dealer.

Generac Portable Products 2,400 PSI High Pressure Washer
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High Pressure Hose
Adjustable Nozzle
Goggles
Throttle Lever
High Pressure Outlet
Pump equipped with
Automatic Cool Down
System
Spray Gun
Water Inlet
Oil Fill
Recoil Starter
Choke Lever
Air Cleaner
Chemical Injection Tube
KNOW YOUR PRESSURE WASHER
Read this owner’s manual and safety rules before operating your high pressure washer.
Compare the illustrations with your high pressure washer to familiarize yourself with the location of the controls. Save this
manual for future reference.
Adjustable Nozzle — Attached to the spray gun to provide
high pressure stream. Adjustable nozzle allows you to adjust force
of spray and spray pattern.
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.
Chemical Injection Tube—Used to siphon chemical from the
detergent container to the pump.
Choke Lever — Used to prepare a cold engine for starting.
Fuel Sut-off — Used to control the flow of fuel to the engine.
Goggles — Always use the enclosed goggles or other eye
protection when running your pressure washer.
High Pressure Hose — Connect one end to water pump and
the other end to spray gun.
High Pressure Outlet — Connection for high pressure hose.
Oil Fill — Oil input location.
On/Off Switch — Used to set engine in starting mode and stop
a running engine.
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 device. Includes safety latch.
Throttle Lever—Used to set engine in a slow or fast running
mode.
Water Inlet — Connection for garden hose.
Pressure Control Knob
On/Off Switch
Fuel Shut-off

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WARNING! Read entire owner’s manual before
you attempt to assemble or operate your new
pressure washer.
REMOVE PRESSURE
WASHER FROM
CARTON
• Remove the high pressure hose 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
• Parts Box (includes the following):
• Oil Bottle
• Wire Form
• Goggles
• Nozzle Cleaning Kit
• O–Ring Maintenance Kit
• Owner’s Manual
• Engine Manual
• Engine Warranty
• Emissions Control Warranty
• Warranty Card
• Spray Gun
• Adjustable Nozzle Extension
• High Pressure Hose
PREPARING PRESSURE
WASHER FOR USE
If you have any problems with the assembly of your
pressure washer or if parts are missing or damaged, call the
pressure washer helpline at 1–800–270–1408.
To prepare your pressure washer for operation you
will need to perform these tasks:
• Lift and secure the handle and attach the wire form.
• Add oil to the engine.
• Add fuel to the fuel tank.
• Connect the high pressure hose to the spray gun and the
pump.
• Connect the water supply to the pump.
• Connect nozzle extension to gun.
Secure Handle and Wire Form
• Lift handle and slide locking caps over the mating handle
posts (Figure 1).
• From rear of unit, insert wire form into the handle with
the longer arm positioned on the right. The hook should
resemble a “J” (Figure 2).
Lift handle and
slide locking
caps into place
Figure 1 — Secure Handle
Figure 2 — Attach Wire Form to Handle (viewed from rear)
Longer arm of
wire form

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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 the high quality oil recommended in the
engine owner’s manual.
• Place the pressure washer on a level surface.
• Fill engine with oil, as described in the engine owner’s
manual.
NOTE: Check oil often during engine break–in, as
explained in the engine owner’s manual.
Add Gasoline
DANGER! Never fill fuel tank indoors. or when
engine is running or hot. Do Not smoke when
filling fuel tank.
WARNING! Never fill fuel tank completely full.
Always provide space for fuel expansion. Wipe away
any fuel spillage from engine and equipment before
starting.
• 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).
• Slowly add regular UNLEADED gasoline to fuel tank.
Use a funnel to prevent spillage.
• Install the fuel cap and wipe up any spilled gasoline.
Connect Pressure Hose and Water
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 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.
• 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 missing
or damaged.
Maximum Fuel Level
Figure 3 — Add Regular Unleaded Gasoline to Fuel Tank.
Connect high
pressure hose
here.
Figure 4 — Connect High Pressure Hose to Spray Gun
Connect high
pressure hose
here.
Figure 5 — Connect High Pressure Hose to Pump

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77
• 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).
WARNING! There MUST be at least ten feet of
unrestricted garden hose between the pressure
washer inlet and any flow shut off device, such as a
‘Y’ shut-off connector or other convenience-type
water shut-off valve. Damage to pressure washer
resulting from disregarding this warning will not be
covered by the warranty.
• Turn ON the water and squeeze the trigger on the gun
to purge the pump system of air and impurities.
CAUTION! Before starting the pressure washer,
be sure you are wearing adequate eye protection.
• Attach the adjustable 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.
• Make sure the handle and wireform are in place and
secure.
• Check for properly tightened hose connections (high
pressure and water supply).
• Check to make sure 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.
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 pressure washer for the first
time is to follow these instructions step–by–step. 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 at least
2.5 gallons per minute.
• Make sure the unit is in a level position.
Figure 7 — Connect Nozzle Extension to Spray Gun
Connect
garden hose
here.
Inspect
inlet
screen.
Figure 6 — Connect Water Supply Hose to Pump

Generac Portable Products 2,400 PSI High Pressure Washer
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• Check that the high pressure hose is tightly connected to
the spray gun and to the pump.
• 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.
• Position the nozzle in the low pressure mode (nozzle slid
forward) and squeeze the trigger on the spray gun to
relieve the air pressure caused by turning ON the water.
Water will flow out of the gun in a thin stream. Continue
to hold trigger until you have a steady stream of water
and no air remains in the system. This will make it easier
to pull start the engine. Release the trigger.
• Engage the safety latch on the spray gun (Figure 8).
• Turn ON the fuel valve (Figure 9).
• Position the choke lever (Figure 10) as follows:
• Cold engine ~ ~ ~ ~ ~ ~ ~ ~ ~ ~(Choke-CLOSED)
• Restarted warm engine ~ ~ ~ ~ ~ ~(Choke-OPEN)
• Move the throttle lever to the “Fast” position
(Figure 11).
IMPORTANT: When using the pressure washer,
always keep the throttle in the “Fast” position.
Safety Latch
Figure 8 — Spray Gun with Safety Latch Engaged
Figure 9 — Open Fuel Valve
Figure 10 — Choke Lever
Choke Lever
Throttle Lever
Figure 11 — Throttle Lever

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99
• Turn ON the engine switch (Figure 12).
• Grasp the starter grip handle and pull slowly until you
feel some resistance. Then pull cord out with rapid full
arm stroke. Let rope return slowly. Do Not let rope
“snap back” against starter.
• If the choke lever has been moved to the “CLOSED”
position to start the engine, gradually move it to the
“OPEN” position as the engine warms up.
How to Stop Your Pressure Washer
• Move the throttle lever to the “Slow” position
(Figure 11).
• Turn the engine switch to the “Off” position (Figure 12).
• Turn the fuel valve to the “Off” position (Figure 9).
•Squeeze trigger on the spray gun to relieve
pressure in the hose.
NOTE: A small amount of water will squirt out from the
spray gun when you release the pressure.
How to Use the Adjustable Nozzle
You now should know how to START your pressure
washer and how to STOP it. The information in this
section will tell you how to adjust the spray pattern and
apply detergent or any other cleaning chemicals.
DANGER! Never adjust spray pattern when
spraying. Never put hands in front of nozzle to
adjust spray pattern.
On the end of your spray gun is a nozzle that you can slide
forward and backward and that you can also twist from
side to side. With the adjustable nozzle you can adjust the
spray pattern to be either high pressure or low pressure.
You can also adjust the spray so it is concentrated in a
stream pattern or expanded into a fan pattern.
• Slide the nozzle forward when you wish to adjust the
spray to low pressure mode (Figure 13). Slide the nozzle
backward to achieve high pressure.
Figure 13 - Using the Adjustable Nozzle.
Slide nozzle backward
for high pressure mode.
Slide nozzle forward for
low pressure mode and
detergent application.
Twist nozzle
counterclockwise for fan
spray pattern.
Twist nozzle clockwise
for narrow spray
pattern.
Figure 12 — Engine Switch

Generac Portable Products 2,400 PSI High Pressure Washer
10
• Point the nozzle toward the ground and press the trigger
to test the pattern (Figure 14).
• Twisting the nozzle adjusts the spray pattern from a
narrow pattern to a fan pattern.
• For most effective cleaning, keep spray nozzle between
8 to 24 inches away from cleaning surface.
• If you get the spray nozzle too close, especially using high
pressure mode, you may damage the cleaning surface.
•Do Not get closer than 6 inches when cleaning
automobile tires.
Applying Detergent with the
Adjustable Nozzle
IMPORTANT: Use soaps designed specifically for
pressure washers. Household detergents could damage
the pump.
IMPORTANT: You must attach all hoses before you
start the engine. Starting the engine without all the hoses
connected and without the water turned ON will damage
the pump.
To apply detergent follow these steps:
• Review the use of adjustable nozzles on page 9.
• Prepare the detergent solution as required by the job.
• Hang the detergent solution on hook of the wireform on
the handle (Figure 15).
• Place small filter of the clear, detergent siphoning tube
into the detergent container.
CAUTION! Keep the plastic injector tube from
coming in contact with the hot muffler. This will
damage the plastic tube. When inserting the filter
into a cleaning agent bottle, route the tube so as to
keep it from inadvertently contacting the hot
muffler.
• Slide the adjustable nozzle forward to low pressure
mode. Detergent cannot be applied with nozzle in high
pressure position.
IMPORTANT: Detergent cannot be applied without the
water source turned on.
• Make sure garden hose is connected to water inlet.
Check that high pressure hose is connected to spray gun
and pump. Start engine.
• Apply detergent to a dry surface, starting from the
bottom and working up.
• Allow the detergent to soak in between 3-5 minutes
before washing and rinsing. Reapply as needed to prevent
surface from drying.
• For washing, start at lower portion of area to be washed
and work upward, using long, even overlapping strokes.
Figure 15 — Insert the Small Filter Into Container of
Cleaning Solution
Figure 14— Testing the Spray Pattern

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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.
For Rinsing:
• Slide nozzle backward to high pressure and wait for
detergent to clear.
• Keep the spray gun a safe distance from the area you
plan to spray.
• 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 top of area to be rinsed, working down with
same overlapping strokes as you used for cleaning.
NOTE: You can also stop detergent from flowing by
simply removing siphon from bottle.
Automatic Cool Down System
(also known as Thermal Relief)
If you run the engine on your pressure washer for
3-5 minutes without pressing the trigger on the spray gun,
circulating water in the pump can reach a temperature
between 140–145°F. When the water reaches this
temperature, the automatic cool down system engages and
cools the pump by discharging the warm water onto
the ground. This system prevents internal damage to the
pump.

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12
SPECIFICATIONS
Outlet Pressure . . . . 2,400 psi
Flow Rate . . . . . . . . . . 2.5 gallons per minute (gpm)
Water Supply . . . . . . Not to Exceed 140°F
Temperature
Automatic Cool . . . . Will cycle when water
Down System reaches 140°-145°F
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 procedures in the “Pressure Washer Maintenance”
section of this manual should be made at least once each
season.
• Once a year you should check the gun and nozzle
extension assembly for wear. Also clean or replace the
spark plug and clean or replace the air filter. A new spark
plug and clean air filter assure proper fuel–air 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 adjustable nozzle extension assembly for
leaks.
• Rinse out garden hose to flush out debris.
PRESSURE WASHER
MAINTENANCE
Check and Clean Inlet Screen
Examine the screen on the water inlet. Clean it if the
screen is clogged or replace it if screen is damaged.
Check High Pressure Hose
The high pressure hose can develop leaks from wear,
kinking, or abuse. Inspect the hose each time before using
it. Check for cuts, leaks, abrasions or bulging of cover,
damage or movement of couplings. If any of these
conditions exist, replace the hose immediately.
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 Adjustable 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.
Check In-Line Filter
Refer to Figure 16 and service the in-line filter if it
becomes clogged, as follows:
1. Detach gun from high pressure hose. Detach nozzle
extension from gun and remove o-ring and screen
from nozzle extension. Flush the screen, gun, and
nozzle extension with clean water to clear debris.
Filter Screen
O-Ring
Nozzle Extension
Figure 16 — Service In-Line Filter

Generac Portable Products 2,400 PSI High Pressure Washer
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2. If the screen is damaged, the o-ring kit contains a
replacement in-line filter screen and an o-ring. If
undamaged, reuse screen.
3. Place the in-line filter screen into the threaded end of
the nozzle extension. Direction does not matter. Push
the screen in with the eraser end of a pencil until it
rests flat at the bottom of the opening. Take care to
not bend the screen.
4. Place the o-ring into the recess. Push the o-ring snugly
against the in-line filter screen.
5. Assemble the nozzle extension to the spray gun, as
described earlier in this manual.
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.
Purge Pump of Air and
Contaminants
To remove air from the pump, follow these steps:
• Set up the pressure washer as described in “Preparing
the Pressure Washer for Use” on page 5, and connect
the water supply.
• Remove the nozzle extension from the gun.
• Pull the trigger on the gun and hold.
To remove contaminants from the pump, follow
these steps:
• Set up the pressure washer as described in “How to Use
Your Pressure Washer” on page 7, and connect the
water supply.
• Remove the nozzle extension from the gun.
• Start the engine according to instructions given on
page 7.
• 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 1–2 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 a nozzle becomes restricted or clogged with dirt or
foreign materials, a pulsing sensation caused by excessive
pump pressure may occur during use.
Immediately clean a clogged or partially restricted nozzle
with the kit included with your pressure washer by
following these instructions:
• Shut off the engine and turn off the water supply.
• Disengage the safety latch and pull the trigger on the
spray gun. Hold until all water is purged from the unit.
Engage the safety latch on the spray gun.
• Separate the nozzle extension from the spray gun.
• Twist nozzle to stream setting.
• Remove nozzle from the end of the nozzle extension
using a 2 mm or 5/64 allen wrench (included in Nozzle
Cleaning Kit) (Figure 17).
• Use the wire included in the kit or a small paper clip to
free the foreign materials clogging or restricting the
nozzle (Figure 17).
Figure 17 — Remove and clean nozzle.

Generac Portable Products 2,400 PSI High Pressure Washer
14
• Remove additional debris by back flushing water supply
through nozzle extension. Back flush between 30 to
60 seconds. Twist nozzle extension to stream pattern and
move nozzle from low to high pressure while flushing
(Figure 18).
• Reinstall nozzle into nozzle extension. Do Not
overtighten.
• Reconnect the water supply, turn ON the water, and
start the engine.
• Reconnect nozzle extension to spray gun.
• Test the pressure washer by operating with nozzle in the
high and the low pressure positions.
O-Ring Maintenance
Your pressure washer uses o-rings to keep hose and spray
gun connections tight and leak-free. Through the normal
operation of your unit, these o-rings may become worn or
damaged.
Provided with your pressure washer is an O–Ring
Maintenance Kit which includes replacement o-rings,
rubber washer and water inlet filter. Refer to the
instruction sheet provided in the kit to service your unit’s
o-rings. Note that not all of the parts in the kit will be used
on your unit.
To remove a worn or damaged o–ring:
• Use a small flathead screwdriver to get underneath the
o-ring and pry it off.
ENGINE MAINTENANCE
See the engine owner’s manual for instructions on how to
properly maintain the engine.
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 in
low pressure (adjustable nozzle in forward position).
Flush for one to two minutes.
2. Shut off the engine and let it cool, then remove all
hoses.
WARNING! Be sure lever is in “STOP” position
before you continue. If you start engine without
proper water supply connected, you can damage
pump.
3. Empty the pump of all pumped liquids by pulling the
recoil handle about 6 times. This should remove most
of the liquid in the pump.
NOTE: To protect the unit from freezing temperatures,
draw RV antifreeze (no alcohol) into the pump by pouring
the antifreeze into a 3–foot section of garden hose
connected to inlet adapter and pulling recoil handle twice.
4. Store in a clean, dry area.
STORING THE ENGINE
See the engine owner’s manual for instructions on how to
properly store the engine.
Figure 18 — Backflush the nozzle

Generac Portable Products 2,400 PSI High Pressure Washer
15
TROUBLESHOOTING
Problem Cause Correction
Pump has following
problems: failure to produce
pressure, erratic pressure,
chattering, loss of pressure,
low water volume.
1. Nozzle in low pressure mode.
2. Water inlet is blocked.
3. Inadequate water supply.
4. Inlet hose is kinked or leaking.
5. Clogged inlet hose strainer.
6. Water supply is over 140°F.
7. High pressure hose is blocked or
leaks.
8. Gun leaks.
9. Nozzle is obstructed.
10. Pump is faulty.
1. Pull nozzle backward for high
pressure mode.
2. Clear inlet.
3. Provide adequate water flow.
4. Straighten inlet hose, patch leak.
5. Check and clean inlet hose strainer.
6. Provide cooler water supply.
7. Clear blocks in outlet hose.
8. Replace gun.
9. Clean nozzle.
10. Contact Generac service facility.
Detergent fails to mix with
spray.
1. Detergent siphoning tube is not
submerged.
2. Chemical filter is clogged.
3. Nozzle is in high pressure mode.
1. Insert detergent siphoning tube into
detergent.
2. Clean or replace filter/detergent
siphoning tube.
3. Push nozzle forward for low
pressure mode.
Engine runs good at no-load
but “bogs” when load is
added.
Engine speed is too slow. Move throttle control to FAST position.
If engine still “bogs down”, contact
Honda service facility.
Engine will not start; or
starts and runs rough.
1. Low oil level.
2. Dirty air cleaner.
3. Out of gasoline.
4. Stale gasoline.
5. Spark plug wire not connected to
spark plug.
6. Bad spark plug.
7. Water in gasoline.
8. Overchoking.
9. Excessively rich fuel mixture.
10. Intake valve stuck open or closed.
11. Engine has lost compression.
1. Fill crankcase to proper level.
2. Clean or replace air cleaner.
3. Fill fuel tank.
4. Drain gas tank; fill with fresh fuel.
5. Connect wire to spark plug.
6. Replace spark plug.
7. Drain gas tank; fill with fresh fuel.
8. Open choke fully and crank engine.
9. Contact Honda service facility.
10. Contact Honda service facility.
11. Contact Honda service facility.
Engine shuts down during
operation.
1. Out of gasoline.
2. Low oil level.
1. Fill fuel tank.
2. Fill crankcase to proper level.
Engine lacks power. Dirty air filter. Replace air filter.
Engine “hunts” or falters. Choke is opened too soon. Move choke to halfway position until
engine runs smoothly.

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

Generac Portable Products 2,400 PSI High Pressure Washer
17
Item Part # Qty Description
1 BB5161 1 BASE, Black Powder Coat
2 185783 1 DECAL, Unit 1456-0
3 B1631A 1 BILLBOARD, Plastic
4 B1932 1 DECAL, Start Instructions
5 46476 2 CAPLUG, 1 Sq. x 16 GA
6 31669 2 CARRIAGE BOLT, 1/4" - 20 x 1-3/4"
8 52858 2 NUT, Locking M8 1.25"
9 27007 2 VIB MOUNT, Donut Type
10 50190 2 FLAT WASHER, 10 GA - .34" x 1"
11 39287 2 HHCS, M8 1.25 x 45
12 B4966 2 TIRE, Metal Hub 10"
13 75402C 2 PUSHNUT, 5/8 I.D.
14 B1460 1 CAP, Black Vinyl
15 A1040A 1 HOSE, Chemical 42" Clear
16 A1041 1 FILTER, Chemical Hose
17 B1779 2 COVER, Hinge
18 BB2534 1 HANDLE, Black Powder Coated
19 B2071 2 NUT, Locking Flange 1/4" - 20
20 21217 4 MOUNT, Rubber Shock
21 B2347 2 CAP, End of Tube
22 B4148D 1 ASSY., Med, 3/4", 6.0, HS, BR.
23 48031G 1 CLAMP, Hose
24 97100 1 CAP, High Pressure Adapter
25 185877 1 HOSE, 5/16" x 25'
26 87815 1 GOGGLES, Safety
27 B3263 1 GUN, High Pressure
28 BB3061B 1 OIL, Engine
29 B3335A 1 WAND, Adjustable Nozzle
30 97566 1 TAG, Nozzle Instruction
31 B5830 1 KIT, Maintenance
32 185780 1 MANUAL, Owners 1456-0
33 B2168A 1 WIREFORM
34 185779 1 MANUAL, Engine Honda Gx
35 B2163 1 KIT, Nozzle Cleaning
36 94804 1 NOZZLE, 1.10 White Replacement
37 67989 8 NUT, M8 Flange Serrated
38 NSP 1 ENGINE
39 B1288 1 TAG, Breather Cap
40 A1408 1 CAP, Garden Hose Connector
41 21424 1 CONNECTOR, Garden Hose
42 B4224 1 SCREEN, Gun Inlet
43 97837 1 O-RING, Hi Pressure Trans.
44 88681 1 CARD, Owners Registration
PART LIST – UNIT

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

Generac Portable Products 2,400 PSI High Pressure Washer
19
Item Part # Qty Description
1 B2218 1 O-RING, Engine Adapter
2 B2260 1 ADAPTER, Housing, Cam
3 B2217 4 O-RING, Engine Adapter Bolt
4 B2261B 4 SCREW, Button Hd 5/16 - 24 x 3/4"
5 96400 3 SPRING, Piston Return
6 99735 1 ASSEMBLY, Oil Breather
7 93790 1 O-RING, Crankcase
8 40945 6 SHCS, M6 x 1.0 x 20mm
9 93652 1 SPRING, Thermal By-Pass
10 95416 1 PISTON, Thermal By-Pass
11 93876 1 O-RING, Thermal By-Pass
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
18 97840 3 O-RING, Cap
19 97841 3 CAP, Outlet Port
20 A1320 1 SPACER PLATE, Inlet
21 93680 3 SEAL, Oil Piston
22 94944 3 SHOE, Piston Pivot
23 99427 3 ASSEMBLY, Ceramic Piston & Cap
24 185947 0 KIT, Crankcase
1 . . . . . . 1 O-RING, Engine Adapter
2 . . . . . . 1 ADAPTER, Housing, Cam
3 . . . . . . 4 O-RING, Engine Adapter Bolt
4 . . . . . . 4 SCREW, Button Hd 5/16 - 24 x 3/4"
5 . . . . . . 3 SPRING, Piston Return
6 . . . . . . 1 ASSEMBLY, Oil Breather
7 . . . . . . 1 O-RING, Crankcase
8 . . . . . . 6 SHCS, M6 x 1.0 x 20mm
12 . . . . . . 1 GASKET, Head
16 . . . . . . 6 WASHER, Steel Special
17 . . . . . . 6 BOLT, Head M8 x 1.25 x 70mm
21 . . . . . . 3 SEAL, Oil Piston
22 . . . . . . 3 SHOE, Piston Pivot
23 . . . . . . 3 ASSEMBLY, Ceramic Piston & Cap
25 . . . . . . 1 BEARING SET, Thrust 15.5
30 . . . . . . 3 SPACER, Pilot
31 . . . . . . 1 ASSEMBLY, Cam
26 . . . . . . 1 CAM, Axial 6.75 Lift
27 . . . . . . 1 WASHER, Thrust
28 . . . . . . 1 RETAINER, Push - On
29 . . . . . . 1 C-RING, Cam Retainer
33 . . . . . . 1 ADAPTER, Shaft Hex
32 . . . . . . 1 HOUSING, Piston
61 . . . . . . 1 BEARING SET, Cam
34 185752 0 KIT, Complete Head
12 . . . . . . 1 GASKET, Head
13 . . . . . . 1 ACTUATOR, Thermal By-Pass
14 . . . . . . 3 SEAL, High Pressure
15 . . . . . . 3 RING, Bearing
16 . . . . . . 6 WASHER, Steel Special
17 . . . . . . 6 BOLT, Head M8 x 1.25 x 70mm
18 . . . . . . 3 O-RING, Cap
19 . . . . . . 3 CAP, Outlet Port
36 . . . . . . 6 O-RING, Check Valve
37 . . . . . . 6 ASSEMBLY, Check Valve
39 . . . . . . 1 CAP, Plastic
40 . . . . . . 1 SET SCREW, M6 x 8
41 . . . . . . 1 HANDLE, Unloader
Item Part # Qty Description
42 . . . . . 1 SPRING, Unloader
43 . . . . . . 1 ASSEMBLY, Spindle
45 . . . . . . 1 O-RING, Spindle
46 . . . . . . 1 SEAT, Ball Unloader
47 . . . . . . 1 BALL, Stainless Steel 9/32 Dia.
48 . . . . . . 1 SEAT, Trapped Line Pressure
49 . . . . . . 1 O-RING, Trapped Line Pressure
50 . . . . . . 1 VALVE, Shuttle Piston
51 . . . . . . 1 SPRING, Piston Trapped Pressure
52 . . . . . . 1 VENTURI, Chemical
53 . . . . . . 1 O-RING, Venturi
56 . . . . . . 1 ASSEMBLY, Head, Brass
60 . . . . . . 3 SPACER, High Pressure Seal
35 185933 0 KIT, Check Valve
16 . . . . . . 6 WASHER, Steel Special
17 . . . . . . 6 BOLT, Head M8 x 1.25 x 70mm
36 . . . . . . 6 O-RING, Check Valve
37 . . . . . . 6 ASSEMBLY, Check Valve
38 B3479 0 KIT, Unloader Spindle
39 . . . . . . 1 CAP, Plastic
40 . . . . . . 1 SET SCREW, M6 x 8
41 . . . . . . 1 HANDLE, Unloader
42 . . . . . . 1 SPRING,Unloader
43 . . . . . . 1 ASSEMBLY, Spindle
44 B3510 0 KIT, High Pressure Outlet
45 . . . . . . 1 O-RING, Spindle
46 . . . . . . 1 SEAT, Ball Unloader
47 . . . . . . 1 BALL, Stainless Steel 9/32 Dia.
48 . . . . . . 1 SEAT, Trapped Line Pressure
49 . . . . . . 1 O-RING, Trapped Line Pressure
50 . . . . . . 1 VALVE, Shuttle Piston
51 . . . . . . 1 SPRING, Piston Trapped Pressure
52 . . . . . . 1 VENTURI, Chemical
53 . . . . . . 1 O-RING, Venturi
54 185943 0 KIT, Chemical Injector
55 . . . . . . 1 BARB HOSE, Brass with Nylon Insert
57 . . . . . . 1 BALL, 5.5 dia. Chemical Injector
58 . . . . . . 1 SPRING, Chemical Injector
59 185926 0 KIT, O-Ring SeaIs
1 . . . . . . 1 O-RING, Engine Adapter
3 . . . . . . 4 O-RING, Engine Adapter Bolt
7 . . . . . . 1 O-RING, Crankcase
8 . . . . . . 6 SHCS, M6 x 1.0 x 20mm
9 . . . . . . 1 SPRING, Thermal By-Pass
10 . . . . . . 1 PISTON, Thermal By-Pass
11 . . . . . . 1 O-RING, Thermal By-Pass
12 . . . . . . 1 GASKET, Head
14 . . . . . . 3 SEAL, High Pressure
16 . . . . . . 6 WASHER, Steel Special
17 . . . . . . 6 BOLT, Head M8 x 1.25 x 70mm
18 . . . . . . 3 O-RING, Cap
21 . . . . . . 3 SEAL, Oil Piston
36 . . . . . . 6 O-RING, Check Valve
37 . . . . . . 6 ASSEMBLY, Check Valve
45 . . . . . . 1 O-RING, Spindle
49 . . . . . . 1 O-RING, Trapped Line Pressure
53 . . . . . . 1 O-RING, Venturi
60 . . . . . . 3 SPACER, High Pressure Seal
62 . . . . . . 3 SEAL, Piston, Oil
Item numbers 24, 34, 35, 38, 44, 54, and 59 are service kits and include all
parts shown within the box. Certain parts are only available as a component of
a kit.
PART LIST–PUMP

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