Generac Portable Products 2400PSI User manual

Model No. 1450–0 (2400 PSI Pressure Washer) Manual No. 185694GS Revision 5 (06/03/2002)
Pressure Washer Owner’s Manual
2400PSI
Questions? Help is just a moment away!
Call: Generac Generator Helpline - 1-800-270-1408 M-F 8-5 CT
Web: www.generac-portables.com

2
Generac 2,400 PSI Pressure Washer
TABLE OF CONTENTS
Safety Rules. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Know Your Pressure Washer . . . . . . . . . . . . . . . . . . . . . . 4
Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-10
Product Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-13
Storage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Notes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Replacement Parts. . . . . . . . . . . . . . . . . . . . . . . . . . . 16-19
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Last Page
EQUIPMENT
DESCRIPTION
Read this manual carefully and become familiar
with your pressure washer. Know its applications,
its limitations and any hazards involved.
Every effort has been made to ensure that information in
this manual is accurate and current. However, Generac
reserves the right to change, alter or otherwise improve the
product and this document at any time without prior notice.
SAFETY RULES
The safety alert symbol ( ) is used with a signal word
(DANGER, CAUTION, WARNING), a pictorial and/or a
safety message to alert you to hazards. DANGER
indicates a hazard which, if not avoided, will result in death
or serious injury. WARNING indicates a hazard which, if
not avoided, could result in death or serious injury.
CAUTION indicates a hazard which, if not avoided, might
result in minor or moderate injury. CAUTION, when
used without the alert symbol, indicates a situation that
could result in equipment damage. Follow safety messages
to avoid or reduce the risk of injury or death.
WHEN ADDING FUEL
• Turn pressure washer OFF and let it cool at least 2 minutes
before removing gas cap.
• Fill fuel tank outdoors.
• Do not overfill tank. Allow space for fuel expansion.
• Keep gasoline away from sparks, open flames, pilot lights, heat,
and other ignition sources.
• Do not light a cigarette or smoke.
WHEN OPERATING EQUIPMENT
• Do not tip engine or equipment at angle which causes
gasoline to spill.
• Do not spray flammable liquids.
WHEN TRANSPORTING OR REPAIRING EQUIPMENT
• Transport/repair with fuel tank EMPTY or with fuel shutoff
valve OFF.
WHEN STORING GASOLINE OR EQUIPMENT WITH
FUEL IN TANK
• Store away from furnaces, stoves, water heaters, clothes
dryers or other appliances that have pilot light or other
ignition source because they can ignite gasoline vapors.
Gasoline and its vapors are extremely
flammable and explosive.
Fire or explosion can cause severe burns or
death.
WARNING
• Never aim the spray gun at people, animals or plants.
• Do not allow CHILDREN to operate the pressure washer.
• Never repair high pressure hose. Replace it.
The high pressure stream of water that this
equipment produces can pierce skin and its
underlying tissues, leading to serious injury and
possible amputation.
WARNING
• Keep water spray away from electric wiring or fatal electric
shock may result.
Spray contact with electrical wiring can result in
electrocution.
WARNING
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. If you equip the muffler with a spark arrester,
it must be maintained in effective working order.
The engine exhaust from this product contains
chemicals known to the State of California to cause
cancer, birth defects, or other reproductive harm.
WARNING

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Generac 2,400 PSI Pressure Washer
• Operate pressure washer ONLY outdoors.
• 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.
Running engine gives off carbon monoxide, an
odorless, colorless, poison gas.
Some chemicals or detergents may be harmful if
inhaled or ingested, causing severe nausea,
fainting or poisoning.
Breathing carbon monoxide will cause nausea,
fainting or death.
DANGER
• Keep spray nozzle between 8 to 24 inches away from cleaning
surface.
• Be extremely careful if you must use the pressure washer from
a ladder, scaffolding or any other relatively unstable location.
• The cleaning area should have adequate slopes and drainage to
reduce the possibility of a fall due to slippery surfaces.
• Operate this unit on a stable surface.
The high pressure spray could also cause you to
fall if you are too close to the cleaning surface.
Pressure in a running washer builds as you
climb. When you press the trigger, the recoil
from the initial spray could cause you to fall.
Use of pressure washer can create puddles and
slippery surfaces.
WARNING
• Do not touch hot surfaces.
• Allow equipment to cool before touching.
Running engines produce heat. Temperature of
muffler and nearby areas can reach or exceed
150°F (65°C).
Severe burns can occur on contact.
WARNING
• Do not tamper with governed speed.
• Do not operate the pressure washer above the rated pressure.
Excessively high or low operating speeds increase risk
of injury and damage to pressure washer.
CAUTION
• Do not wear loose clothing, jewelry or anything that may be
caught in the starter or other rotating parts.
• Tie up long hair and remove jewelry.
Starter and other rotating parts can entangle
hands, hair, clothing, or accessories.
WARNING
WHEN ADJUSTING OR MAKING REPAIRS TO YOUR
HIGH PRESSURE WASHER
• Disconnect the spark plug wire from the spark plug and place
the wire where it cannot contact spark plug.
Unintentional sparking can result in fire or
electric shock.
WARNING
• 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.
WARNING
• Do not point spray gun at glass when in the jet spray mode.
• Never aim the spray gun at plants.
High pressure spray may damage fragile items including
glass.
CAUTION

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Generac 2,400 PSI Pressure Washer
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
Fuel Tank
Recoil Starter
Throttle Lever
Air Cleaner
Chemical Injection Tube
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 125°-155°F. Warm water will discharge
from pump onto ground. This system prevents internal pump
damage.
Chemical Injection Tube — Used 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.
Extension with Turbo Nozzle — The turbo nozzle rotates
the high pressure stream in a rapid circular pattern for aggressive
cleaning.
Fuel Tank — Fill with regular unleaded gasoline here.
Goggles — Always use the 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. 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 Quick–Connect Fitting — You must
attach this device to the spray gun to use the nozzles. The
quick–connect 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.
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 Lever — Sets engine in starting mode for recoil
starter and stops a running engine.
Water Inlet — Connection for garden hose.
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.
Extension with
Turbo Nozzle
High Pressure Hose
Goggles

5
Generac 2,400 PSI Pressure Washer
IMPORTANT: Read entire owner’s manual before you
attempt to assemble or operate your new pressure washer.
REMOVE PRESSURE
WASHER FROM
CARTON
• Remove the handle, 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
• Handle
• High Pressure Hose
• Parts Box containing the following:
• Bag containing 4 Multi–Colored Nozzles
• Safety Goggles
• Nozzle Extension with Quick–Connect Fitting
• Oil Bottle
• Maintenance Kit
• Owner’s & Engine Manual
• Parts Bag (hardware to attach handle and turbo
nozzle)
• Spray Gun
• Extension with Turbo Nozzle
If any of the above parts are missing or damaged, call the
pressure washer helpline at 1–800–270–1408.
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 1–800–270–1408.
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.
• Connect the water supply to the pump.
Attach Handle to Pressure Washer
To attach handle to the pressure washer:
• Slowly tip the pressure washer forward and let it gently
rest on the front bumper, as shown in Figure 1.
• 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 multi–colored nozzles in the spaces provided in the
handle.
Figure 1 — Attach Handle to Pressure Washer

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Generac 2,400 PSI Pressure Washer
Attach Spring Clips to Handle
• Attach spring clips to the left side (viewing from the rear
of the unit) of the handle with the self tapping screws in
the holes provided.
• Place the extension with turbo nozzle in the spring clips,
as shown in Figure 2.
Add Engine Oil
IMPORTANT: Any attempt to crank or start the engine
before it has been properly serviced with the
recommended oil may result in an engine failure.
• Place pressure washer on a level surface.
• Refer to the engine owners manual to add recommended
oil to engine.
NOTE: Check oil often during engine break–in.
Refer to engine owner’s manual.
NOTE: The pump is pre-lubricated and sealed, requiring
no additional lubrication for the life of the pump.
Add Gasoline
WARNING! 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.
Provide space for fuel expansion. Wipe away any fuel
spillage from engine and equipment before starting.
• Use clean, fresh, unleaded 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 area around fuel fill cap, remove cap.
• Slowly add gasoline to fuel tank. Use a funnel to prevent
spillage. Fill tank to “Fuel Level Mark”, as shown in
Figure 3.
• Install fuel cap and wipe up any spilled gasoline.
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 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 — Place Extension with Turbo Nozzle in Spring
Clips
Figure 3 — Add Gasoline to Fuel Tank.
Spring Clips
Connect high
pressure hose
here
Figure 4 — Connect High Pressure Hose to Spray Gun

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Generac 2,400 PSI Pressure Washer
• 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, replace it if it is damaged. DO NOT
RUN THE PRESSURE WASHER IF THE SCREEN IS
DAMAGED. NEVER SIPHON INLET WATER.
• Run water through the garden hose for 30 seconds to
clean out any debris. Turn off water.
• Connect the garden hose to the water inlet. Tighten by
hand (Figure 6).
CAUTION! 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 spray
gun to purge the pump system of air and impurities.
CAUTION! Before starting the pressure washer,
be sure you are wearing adequate eye protection.
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 100° F) at
an adequate flow.
• Be sure to read the “Safety Rules” and “Operation”
sections before using the pressure washer.
Figure 5 — Connect High Pressure Hose to Pump
Figure 6 — Connect Garden Hose to Water Inlet
Inspect inlet
screen, Do
Not use if
damaged, clean
if dirty.

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Generac 2,400 PSI 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.
To Start Your Pressure Washer
To start your pressure washer for the first time, follow
these instructions step-by-step. This starting information
also applies if you have let the pressure washer sit idle for
at least a day.
• Place the pressure washer in an area close enough to a
water source capable of supplying water at a flow rate
greater than 2.3 gallons per minute.
• Check that the high pressure hose is tightly connected to
the spray gun and to the pump. See “Preparing Pressure
Washer for Use” (page 5) for illustrations.
• Make sure unit is in a level position.
• Connect the garden hose to the water inlet on the
pressure washer pump. Turn ON the water.
CAUTION! Do Not run the pump without the water
supply connected and turned on. You must follow this
caution or the pump will be damaged.
• Squeeze the trigger on the gun until you have a steady
stream of water. This purges the pump of air and
impurities.
• Attach the nozzle extension to the spray gun (Figure 7).
Tighten by hand.
• Choose the nozzle you want to use and insert it into the
nozzle extension. See “How to Use the Nozzles” on
page 9.
• Engage the safety latch to the spray gun trigger (Figure 8).
• Pull the Choke rod to the CLOSED position (all the way
out, Figure 9).
NOTE: For a warm engine, be sure the choke is in the
OPEN position (no choke).
• Move the Throttle Control lever to the “Fast” position
(Figure 10).
• Grasp starter grip 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 engine fails to start repeat above steps or refer to
the engine owner’s manual.
• If the choke was pulled to the CLOSED position to start
the engine, slowly push it to the OPEN position as the
engine runs smoother.
NOTE: If the recoil starter is hard to pull, it may be
necessary to squeeze the gun trigger to relieve internal
pump pressure.
NOTE: Always keep the Throttle Control lever in the
“Fast” position when operating the pressure washer.
Choke Rod
Open
Closed
Throttle Lever
Fast
Slow
Stop
Figure 9 — Choke Positions
Figure 10 — Throttle Lever Positions
Safety Latch
Figure 8 — Spray Gun with Safety Latch Engaged
Figure 7 — Connect Nozzle Extension to Spray Gun

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Generac 2,400 PSI Pressure Washer
How to Stop Pressure Washer
• Move Throttle Control lever to the “Slow” position.
• Wait for the engine to idle down.
• Move 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
squeeze the trigger.
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.
CAUTION! Never exchange nozzles without
locking the safety latch on the trigger.
The quick–connect on the nozzle extension allows you to
switch between four different nozzles. The nozzles vary the
spray pattern, as shown in Figure 11.
Follow these instructions to change nozzles:
• Engage the safety latch on the spray gun.
• Pull back the collar on the quick–connect at the end of
the nozzle extension and pull the current nozzle off.
Store the nozzle in the space provided on the handle.
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 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.
How to Use the Turbo Nozzle
The turbo nozzle rotates the high pressure stream in a
rapid circular pattern. The high pressure spray is most
effective when the tip of the nozzle extension is held
between 8 to 24 inches from the surface being cleaned.
Always start the turbo nozzle at a distance, gradually
getting closer to the surface until you get the cleaning force
you want.
WARNING! The turbo nozzle produces an
extremely high pressure spray which is capable of
removing paint and cutting holes through surfaces if
held too close. Always make sure the surface you
will clean will not be damaged by the high pressure
spray by testing in a hidden area.
NOTE: You cannot apply detergent with the turbo nozzle.
Cleaning and Applying Chemical
CAUTION! 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.
40° White 15° Yellow 0° Red
Black
Use to apply
chemical
Figure 11 — Nozzle Spray Patterns
Low Pressure
High Pressure

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Generac 2,400 PSI Pressure Washer
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 quick-connect 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 to prevent streaking.
• Allow the detergent to soak between 3–5 minutes
before washing and rinsing. Reapply detergent as needed
to prevent surface from drying.
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
cause you to fall. The high pressure spray could also
cause 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 9.
• Keep the spray gun a safe distance from the area you
plan to spray.
• Use lower pressure to wash items such as a car or boat.
Use higher pressure to strip paint and degrease
driveways.
• Apply a high pressure spray to a small area and then
check the surface for damage. If no damage is found,
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
3–5 minutes without pressing the trigger on the spray gun,
circulating water in the pump can reach a temperature
between 125°–155°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.
SPECIFICATIONS
Outlet Pressure . . . . 2,400 psi
Flow Rate . . . . . . . . . . 2.2 gallons per minute (gpm)
Detergent Mix . . . . . . Use undiluted detergent approved
for pressure washers
Water Supply . . . . . . Not to Exceed 100°F
Temperature
Automatic Cool . . . . Will cycle when water
Down System reaches 125°-155°F

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Generac 2,400 PSI Pressure Washer
GENERAL MAINTENANCE
RECOMMENDATIONS
The pressure washer warranty 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 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 Maintenance section of this manual
should be made at least once each season.
• Once each year you should clean or replace the spark
plug and clean or replace the air filter and check the
spray gun and nozzle extension assemblies for wear. 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 spray gun and nozzle extension assemblies 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.
WARNING! 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
exceeds the maximum pressure rating of your
pressure washer.
Check Detergent Siphoning Tube
Examine the filter on the detergent tube 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.
Cleaning Detergent Siphoning Tube
If you used the detergent siphoning tube, you must flush it
with clean water before stopping the engine.
• Place the chemical injection siphon/filter in a bucket full
of clean water.
• Attach the black low pressure nozzle.
• 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 spray gun to
relieve the pressure in the hose.
Check Gun and Nozzle Extension
Examine the hose connection to the spray 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 12 and service the in-line filter if it
becomes clogged, as follows:
Figure 12 — Clean In-Line Filter
Nozzle Extension
Filter Screen
O-ring

12
Generac 2,400 PSI Pressure Washer
1. Detach spray gun from high pressure hose. Detach
nozzle extension from spray gun and remove o-ring
and screen from nozzle extension. Flush the screen,
spray gun, and nozzle extension 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 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.
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” (page 5) and connect the
water supply.
• Pull the trigger on the spray gun and hold.
To remove contaminants from the pump, follow
these steps:
• Set up the pressure washer as described in “Preparing
the Pressure Washer for Use” (page 5) and connect the
water supply.
• Start the engine as described in “How To Start Your
Engine” on page 7.
• Squeeze the trigger on the spray gun and hold.
• When the water supply is steady and constant, engage
the safety latch.
Nozzle Maintenance
A pulsing sensation felt while squeezing the spray gun
trigger may be caused by excessive pump pressure. The
principal cause of excessive pump pressure is a nozzle
clogged or restricted with foreign materials, such as dirt,
etc. To correct the problem, immediately clean the nozzle
using the tools included with your pressure washer and
follow these instructions:
1. Shut off the engine and turn off the water supply.
2. Separate the nozzle extension from the spray gun.
Remove the nozzle from the end of the nozzle
extension (Figure 13).
3. Remove the in-line filter from the other end of the
nozzle extension.
4. Use the wire included in the kit (or a small paper clip)
to free any foreign material clogging or restricting the
nozzle (Figure 13).
5. Using a garden hose, remove additional debris by back
flushing water through the nozzle extension
(Figure 14). Back flush between 30 to 60 seconds.
6. Reinstall the nozzle and in-line filter into the nozzle
extension.
7. Reconnect the nozzle extension to the spray gun.
8. Reconnect the water supply, turn on the water, and
start the engine.
9. Test the pressure washer by operating with each of the
Quick Connect nozzles.
Figure 13 — Nozzle Maintenance
Use wire here
to remove
debris.
Figure 14 — Backflush Nozzle Extension

13
Generac 2,400 PSI Pressure Washer
O–Ring Maintenance
Through the normal operation of your pressure washer,
o–rings, which keep the connections of the hoses and spray
gun tight and leak–free, 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.
CAUTION! Avoid prolonged or repeated skin
contact with used motor oil. Used motor oil has
been shown to cause skin cancer in certain
laboratory animals. Thoroughly wash exposed areas
with soap and water.
KEEP OUT OF REACH OF CHILDREN. DON'T
POLLUTE. CONSERVE RESOURCES. RETURN
USED OIL TO COLLECTION CENTERS.
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 high
pressure and garden hoses. Disconnect spark plug wire
from spark plug.
3. Empty the pump of liquids by pulling the engine recoil
handle about 6 times. This should remove most of the
liquid in the pump.
4. Use Generac brand pump saver to prevent corrosion
build up and freezing of pump.
5. Store in a clean, dry area.
Protecting the Pump
To protect the pump from damage caused by mineral
deposits or freezing, use the Generac PumpSaver to treat
pump. This prevents freeze damage and lubricates pistons
and seals.
NOTE: Generac PumpSaver, model number 01559, is
available as an optional accessory. It is not included with the
pressure washer.
CAUTION! You must protect your unit from freezing
temperatures. Failure to do so will permanently damage
your pump and render your unit inoperable. Freeze damage
is not covered under warranty.
CAUTION! Read and follow all cautions and
warnings on the PumpSaver can label. Always wear
eye protection when using PumpSaver.
To use PumpSaver, make sure the pressure washer is
turned off and disconnected from supply water. Read and
follow all instructions and warnings given on the PumpSaver
container.
NOTE: PumpSaver will drip from pump after treatment
and will stain wood and concrete.
NOTE: If PumpSaver is not available, draw RV antifreeze
(non-alcohol) into the pump by pouring the solution into a
3-foot section of garden hose connected to inlet adapter
and pulling recoil handle twice.
STORING THE ENGINE
See the engine owner’s manual for instructions on how to
properly store the engine.

14
Generac 2,400 PSI Pressure Washer
NOTES

15
Generac 2,400 PSI Pressure Washer
TROUBLESHOOTING
Problem
Cause
Correction
Pump has following
problems: failure to produce
pressure, erratic pressure,
chattering, loss of pressure,
low water volume.
1. Low pressure nozzle (black) is being
used.
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 100°F.
7. High pressure hose is blocked or
leaks.
8. Gun leaks.
9. Nozzle is obstructed.
10. Pump is faulty.
1. Replace with any of the three high
pressure nozzles.
2. Clear inlet.
3. Provide adequate water flow.
4. Replace hose.
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. Dirty in-line filter.
4. A high pressure nozzle is being
used.
1. Insert detergent siphoning tube into
detergent.
2. Clean or replace filter/detergent
siphoning tube.
3. See “Check In-Line Filter” on page 11.
4. Replace with low pressure (black)
nozzle.
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. Dirty air cleaner.
2. Out of gasoline.
3. Stale gasoline.
4. Spark plug wire not connected to
spark plug.
5. Bad spark plug.
6. Water in gasoline.
7. Overchoking.
8. White smoke from exhaust.
9. Intake valve stuck open or closed.
10. Engine has lost compression.
1. Clean or replace air cleaner.
2. Fill fuel tank.
3. Drain gas tank; fill with fresh fuel.
4. Connect wire to spark plug.
5. Replace spark plug.
6. Drain gas tank; fill with fresh fuel.
7. Open choke fully and crank engine.
8. Contact Honda service facility.
9. Contact Honda service facility.
10. Contact Honda service facility.
Engine shuts down during
operation.
Out of gasoline.
Fill fuel tank.
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.

16
Generac 2,400 PSI Pressure Washer
EXPLODED VIEW — UNIT

17
Generac 2,400 PSI Pressure Washer
PARTS LIST — UNIT
Item Part # Qty Description
1 B190506BGS 1 BASE
2 B2043GS 8 BOLT, Carriage
3 99583GS 9 NUT, Hex Flange
4 B4164GS 1 DECAL, Instructions
5 30809GS 5 GROMMET
6 67989GS 8 NUT, Flange Serrated
7 27007GS 2 VIB MOUNT, Donut Type
8 71693GS 2 WASHER, Flat
9 188194GS 2 BLIND RIVET
10 B2516GS 3 CAP, Black Vinyl
11 B2150GS 1 HOOK, Square Neck Gun
12 NSP 1 ENGINE
13 CB3861BGS 1 HANDLE
14 B4163GS 1 DECAL, 4 QD Nozzles
15 185697GS 1 DECAL, Unit 01450-0
16 B4966GS 2 ASSY, Wheel & Tire
17 190147GS 2 PUSHNUT
18 B5642GS 1 HOSE
19 CB3866GS 1 BUMPER
21 21424GS 1 CONNECTOR, Garden Hose
22 48031GGS 1 CLAMP, Hose
23 A1041GS 1 FILTER, Chemical Hose
24 A1040DGS 1 HOSE, Chemical Inject
26 B4925BGS 1 ASSY, Pump (see pages 18-19)
27 21217GS 4 MOUNT, Rubber Shock
28 BB3061BGS 1 BOTTLE, Oil
30 B5646GS 1 KIT, Nozzles QD
31 B3263GS 1 GUN, Spray
32 B3858GS 1 ASSY, Wand Ext. with QD
33 87815GS 1 GOGGLES, Safety
34 88681GS 1 CARD, Owners Registration
35 185694GS 1 MANUAL, Owners 01450-0
36 B3294GS 1 MANUAL, Honda
37 190862GS 1 KIT, Maintenance
38 B2218GS 1 O-RING
39 23707GS 4 CAPSCREW, Socket Head
40 185859BGS 1 WAND, w/Turbo
41 65852AGS 2 CLIP, Spring
42 185954GS 2 SCREW
43 B4224GS 2 SCREEN, Gun Inlet
44 97837GS 2 O-RING, Hi Pressure Trans
45 B3107GS 1 HOSE, Thermal Drain
46 48031BGS 2 CLAMP, Hose
47 92479GS 4 WASHER, Conical Ribbed
48 187952GS 1 DECAL, Cool Down

18
Generac 2,400 PSI Pressure Washer
EXPLODED VIEW — PUMP

19
Generac 2,400 PSI Pressure Washer
PARTS LIST — PUMP
Item Part # Qty Description
1 B2218 1 O-RING
2 97962 3 CAPSCREW, Socket Head
3 B5710 1 VALVE
4 97835 1 O-RING, Housing Seal
5 21783 1 VALVE, Thermal Relief
6 93680 3 SEAL, Oil Piston
7 97831 3 SPACER, Pilot
8 B2702 1 HOUSING, Piston
9 B4813 1 ADAPTER, Engine
10 97841 3 CAP, Outlet Check Valve
11 40946 4 CAPSCREW, Socket Head
12 185715 0 KIT, AXIAL CAM
1 . . . . . . 1 O-RING, Engine Seal
2 . . . . . . 3 CAPSCREW, Socket Head
4 . . . . . . 1 O-RING, Housing Seal
13 . . . . . . 1 WASHER, Brg.
14 . . . . . . 2 ASSY, Brg.
15 . . . . . . 3 WASHER, Brg.
16 . . . . . . 1 CAM, Axial
17 185287 0 KIT, CHEM INJECT
18 . . . . . . 1 FITTING, Chem Inject
19 . . . . . . 1 BALL, Chem Inject
20 . . . . . . 1 SPRING, Chem Inject
21 . . . . . . 1 O-RING, Venturi & Seat, Black
22 . . . . . . 1 VENTURI, Chem Inject
28 . . . . . . 1 O-RING, Venturi, Yellow
23 187879 0 KIT, UNLOADER
21 . . . . . . 1 O-RING, Venturi & Seat, Black
24 . . . . . . 1 CAP, Unloader
25 . . . . . . 1 O-RING, Unloader Cap
26 . . . . . . 1 SPRING, Unloader
27 . . . . . . 1 PISTON ASSY, Unloader
29 . . . . . . 1 SEAT, Unloader
Item Part # Qty Description
31 185712 0 KIT, CHECK VALVES
11 . . . . . . 4 CAPSCREW, Socket Head
32 . . . . . . 3 O-RING, Check Valve
33 . . . . . . 6 ASSY, Check Valve
45 . . . . . . 3 O-RING, Check Valve, White
34 185531 0 KIT, HEAD BRASS EG
11 . . . . . . 4 CAPSCREW, Socket Head
35 . . . . . . 1 HEAD, Pump
36 . . . . . . 1 PLUG
46 . . . . . . 4 WASHER, Flat
37 185713 0 KIT, PISTON & SPRING
1 . . . . . . 1 O-RING, Engine Seal
2 . . . . . . 3 CAPSCREW, Socket Head
4 . . . . . . 1 O-RING, Housing Seal
38 . . . . . . 3 RETAINER, Piston Spring
39 . . . . . . 3 PISTON
40 . . . . . . 3 SPRING, Piston Return
41 185714 0 KIT, O-RING/SEAL 2300
1 . . . . . . 1 O-RING, Engine Seal
2 . . . . . . 3 CAPSCREW, Socket Head
4 . . . . . . 1 O-RING, Housing Seal
6 . . . . . . 3 SEAL, Oil Piston
11 . . . . . . 4 CAPSCREW, Socket Head
21 . . . . . . 2 O-RING, Venturi & Seat, Black
25 . . . . . . 1 O-RING, Unloader Cap
28 . . . . . . 1 O-RING, Venturi, Yellow
32 . . . . . . 3 O-RING, Check Valve
42 . . . . . . 3 SEAL, Double-Lip
43 . . . . . . 1 O-RING, High Pressure Transfer
44 . . . . . . 3 O-RING, Outlet CV Cap
45 . . . . . . 3 O-RING, Check Valve, White
NOTE: Item numbers 12, 17, 23, 31, 34, 37, and 41 are
service kits and include all parts shown within the box.

LIMITED WARRANTY
GENERAC PORTABLE PRODUCTS OWNER WARRANTY POLICY Effective October 1, 2001
WARRANTY PERIOD*
* The warranty period begins on the date of purchase by the first retail consumer or commercial end user, and continues for the period of time
stated in the table above. "Consumer use" means personal residential household use by a retail consumer. "Commercial use" means all other
uses, including use for commercial, income producing or rental purposes. Once equipment has been used commercially, it shall thereafter be
considered to be in commercial use for purposes of this warranty. Used equipment, demonstration equipment and equipment used for prime
power in place of a utility are not warranted. Accessory parts such as guns, hoses, wands and nozzles are excluded from the product warranty.
** The gasoline engine and starting batteries are warranted solely by the manufacturers of those products.
WARRANTY REGISTRATION IS NOT NECESSARY TO OBTAIN WARRANTY ON GENERAC PORTABLE PRODUCTS
EQUIPMENT. SAVE YOUR PROOF OF PURCHASE RECEIPT. IF YOU DO NOT PROVIDE PROOF OF THE INITIAL
PURCHASE DATE AT THE TIME WARRANTY SERVICE IS REQUESTED, THE MANUFACTURING DATE OF THE
EQUIPMENT WILL BE USED TO DETERMINE THE WARRANTY PERIOD.
About your equipment warranty:
Generac Portable Products welcomes warranty repair and apologizes to you for being inconvenienced. Any Authorized Service Dealer may perform
warranty repairs. Most warranty repairs are handled routinely, but sometimes requests for warranty service may not be appropriate. For example,
warranty would not apply if equipment damage occurred because of misuse, lack of routine maintenance, shipping, handling, warehousing or
improper installation. Similarly, warranty is void if the serial number of the equipment has been removed or the equipment has been altered or
modified.
If a customer differs with the decision of the Service Dealer, an investigation will be made to determine whether the warranty applies. Ask the
Service Dealer to submit all supporting facts to its Distributor for review. If the Distributor decides that the claim is justified, the customer will
be fully reimbursed for those items that are defective. To avoid misunderstandings that might occur between the customer and the Dealer, listed
below are some of the causes of equipment failure that the warranty does not cover:
Normal wear:
Outdoor Power Equipment, like all mechanical devices, needs 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 the equipment.
Installation and Maintenance:
This warranty does not apply to equipment or parts that have been subjected to improper or unauthorized installation or alteration,
misuse, negligence, accident, overloading, overspeeding, improper maintenance, repair or storage so as, in Generac Portable Products'
judgment, to adversely affect its performance and reliability. This warranty also does not cover normal maintenance such as adjustments,
fuel system cleaning and obstruction (due to chemical, dirt, carbon or lime, etc.).
Other Exclusions:
Also excluded from this warranty are wear items such as quick couplers, oil gauges, belts, o-rings, filters, pump packing, etc., pumps
which have been run without water supplied or damage or malfunctions resulting from accidents, abuse, modifications, alterations, or
improper servicing or freezing or chemical deterioration.
Warranty is available only through service dealers authorized by Generac Portable Products. This warranty does not apply to
service by any other entity.
You may locate your nearest Authorized Generac Portable Product Service Dealer in our dealer locator map at
www.generac-portables.com or call 1-877-544-0982.
Generac Portable Products, LLC
Jefferson, Wisconsin U.S.A.
LIMITED WARRANTY
"Generac Portable Products, LLC will repair or replace, free of charge, any part, or parts of the equipment that are defective in material or
workmanship or both. Transportation charges on parts submitted for repair or replacement under this Warranty must be borne by purchaser.
This warranty is effective for the time periods and subject to the conditions provided for in this policy. For warranty service, find the nearest
Authorized Service Dealer in our dealer locator map at www.generac-portables.com or call 1-877-544-0982. THERE IS NO OTHER EXPRESS
WARRANTY. IMPLIED WARRANTIES, INCLUDING THOSE OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE
LIMITED TO THE TIME PERIOD SPECIFIED, OR TO THE EXTENT PERMITTED BY LAW ANY AND ALL IMPLIED WARRANTIES ARE
EXCLUDED. LIABILITY FOR CONSEQUENTIAL DAMAGES UNDER ANY AND ALL WARRANTIES ARE EXCLUDED TO THE EXTENT
EXCLUSION IS PERMITTED BY LAW. Some states do not allow limitations on how long an implied warranty lasts, and some states do not
allow the exclusion or limitation of incidental or consequential damages, so the above limitation and exclusion 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 and country to country."
PRODUCTS** CONSUMER USE COMMERCIAL USE
Portable Generator 1 year 90 days
(Side Valve Engine Powered)
Portable Generator 2 years 1 year
(Overhead Valve Engine Powered) (2nd year parts only)
Electric Powered Pressure Washer 1 year None
Gasoline Powered Pressure Washer 1 year 90 days
Generac Portable Products Are Made Under One Or More Of The Following Patents: (Other Patents Pending)
5902094 5823752 5718255 5890413