Generac Portable Products 2400PSI User manual

Model No. 14500 (2,400 PSI High Pressure Washer) Manual No. 185 94 Revision 3 (7/14/00)
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- 70-1408
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.
High Pressure Washer Owner’s Manual
2400PSI

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
2.2 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, quick connect nozzles, turbo nozzle,
safety goggles, a heavy duty 25 hose, and more.
Please read and retain this manual. The instructions
will enable you to assemble your unit, 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- 70-1408.
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 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 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.
Do Not allow CHILDREN to operate the pressure
washer at any time.
 Always be certain the spray gun, nozzles and
accessories are correctly attached.
Do Not wear loose clothing, jewelry or anything that
may be caught in the starter or other rotating parts.
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
3
 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 covers, should
Never be operated.
 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.
 Always wear eye protection when you use this
equipment or when you are in the vicinity where the
equipment is in use.
 The cleaning area should have adequate slopes and
drainage to reduce the possibility of a fall due to
slippery surfaces.
Do Not bypass any safety device on this machine.
 Operate and store this unit on a stable surface.
 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 spray flammable liquids.
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.
 High pressure spray can cause paint chips or other
particles to become airborne.
Do Not operate the pressure washer above the
rated pressure.
 High pressure spray may damage fragile items
including glass. Do Not point spray gun at glass
when in the jet spray mode.
 Keep water spray away from electric wiring or fatal
electric shock may result.
Never use a spray gun which does not have a trigger
lock or trigger guard in place and in working order.
Never aim the spray 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.
 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.
Do Not secure the spray gun in the (open) position.
 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 move the machine by pulling on the high
pressure hose. Use the handle provided on the unit.
 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.
 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.
 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.
 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.
 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
4
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 140°-145°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

Generac Portable Products 2,400 PSI High Pressure Washer
5
WARNING! 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 Cleaning Kit
 Nozzle Extension with QuickConnect Fitting
 Oil Bottle
 ORing 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 70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 70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

Generac Portable Products 2,400 PSI High 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
DANGER! Never fill fuel tank indoors. Never fill
fuel tank when engine is running or hot. Do Not
smoke when filling fuel tank.
WARNING! Never fill fuel tank completely full.
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 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.
Figure 2  Place Extension with Turbo Nozzle in Spring
Clips Figure 3  Add Gasoline to Fuel Tank.
Figure 4  Connect High Pressure Hose to Spray Gun
Spring Clips

Generac Portable Products 2,400 PSI High Pressure Washer
7
 Before you connect your garden hose to the water
inlet, inspect the Inlet Screen (Figure ). 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 ).
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
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
140° F) at an adequate flow.
 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, for assistance call the pressure washer
helpline at 1-800- 70-1408.
How to Start Your Engine
The best way to start your engine-powered pressure
washer for the first time is to follow these instructions
step-by-step. You may also refer to your engine
owners manual. This starting information also applies
whenever you start the engine after you have let the
pressure washer sit idle for at least a day.
CAUTION! Before starting the pressure
washer, be sure you are wearing adequate eye
protection.
 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.
Inspect inlet
screen, Do Not
use if damaged,
clean if dirty.
Figure 5  Connect High Pressure Hose to Pump
Figure  Connect the Garden Hose to Water Inlet.

Generac Portable Products 2,400 PSI High Pressure Washer
8
 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.
 Pull the Choke rod to the CLOSED position (all the
way out, Figure 7).
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 8).
 Ensure that neither nozzle extension is attached to
the spray gun. The spray gun should be held in the
right hand, as shown in Figure 9. The right hand
should also be used to steady the unit.
 Squeeze the trigger on the spray gun. Water will
flow out of the spray gun in a thin stream. Continue
to squeeze the trigger.
 Grasp the recoil starter handle with your left hand
and pull slowly until you feel some resistance. Then
pull rapidly to start the engine.
 Return the starter handle slowly. Do Not let the rope
snap back against the starter.
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 or refer
to the engine owners manual.
Choke Rod
Open
Closed
Throttle Lever
Fast
Slow
Stop
Figure 7  Choke Positions
Figure 8  Throttle Lever Positions
Figure 9  Recommended Engine Starting Posture
Left Hand
pulls recoil
starter handle
Safety Goggles
Right Hand
stabilizes unit and
squeezes trigger
Do Not attach
either nozzle
extension

Generac Portable Products 2,400 PSI High Pressure Washer
9
 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.
 Engage the safety latch to the spray gun trigger
(Figure 10).
 Choose the nozzle you want to use and insert it into
the nozzle extension. See How to Use the
Nozzles.
 Attach the nozzle extension to the spray gun.
Tighten by hand (Figure 11).
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- 70-1408.
DANGER! 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 12.
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.
Safety Latch
40° White 15° Yellow 0° Red
25° Black
Use to apply
chemical
Figure 10  Engage Safety Latch
Figure 12  Nozzle Spray Patterns
Low Pressure
High Pressure
Figure 11  Connect Nozzle Extension to Spray Gun

Generac Portable Products 2,400 PSI High Pressure Washer
10
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.
CAUTION! 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
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 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.

Generac Portable Products 2,400 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 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 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.
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 140°F
Temperature
Automatic Cool . . . Will cycle when water
Down System reaches 140°-145°F

Generac Portable Products 2,400 PSI High Pressure Washer
12
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.
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 exceeds 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 13 and service the in-line filter if it
becomes clogged, as follows:
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.
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.
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.
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 spray gun to
relieve the pressure in the hose.
Generac Portable Products 2,400 PSI High Pressure Washer
13
Figure 13  Clean In-Line Filter
Nozzle Extension
Filter Screen
O-ring

Generac Portable Products 2,400 PSI High Pressure Washer
14
Nozzle Maintenance
If a nozzle becomes restricted or clogged with foreign
materials, such as dirt, excessive pump pressure may
develop. A partially clogged nozzle can cause a
pulsing sensation during use. This generally is not a
pump related problem.
Immediately clean a clogged nozzle 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 14).
 Remove additional debris by rinsing out the nozzle
for 30 to 0 seconds.
 Reconnect the water supply, turn on the water, and
start the engine.
 Reinstall the nozzle into the nozzle extension.
 Test the pressure washer.
ENGINE MAINTENANCE
See the engine owners manual for instructions on
how to properly maintain the engine.
Service and Adjustments
See the engine owners 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 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.
5. 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 14  Nozzle Maintenance
Use wire here
to remove
debris.

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. 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.
. 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. 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.
. 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. A high pressure nozzle is being
used.
1. Insert detergent siphoning tube into
detergent.
2. Clean or replace filter/detergent
siphoning tube.
3. 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.
. 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.
. 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.

Generac Portable Products 2,400 PSI High Pressure Washer
1
EXPLODED VIEW  UNIT

Generac Portable Products 2,400 PSI High Pressure Washer
17
PARTS LIST  UNIT
Item Part # Qty Description
1 BB5721B 1 BASE
2 B2043 8 BOLT, 5/1 " - 18 x 1-3/4" Carriage
3 99583 9 NUT, Hex Flange 5/1 " - 18
4 B41 4 1 DECAL, Instructions
5 30809 5 GROMMET, 1/8" - 11/1 "
7989 8 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 B251 3 CAP, Black Vinyl .280"
11 B2150 1 HOOK, 5/1 " Square Neck Gun
12 NSP 1 ENGINE
13 CB38 1B 1 HANDLE
14 B41 3 1 DECAL, 4 QD Nozzles
15 185 97 1 DECAL, Unit 01450-0
1 B49 2 ASSEMBLY, 10" Wheel & Tire
17 75402C 2 PUSHNUT
18 B5 42 1 HOSE, 1/4" x 25'
19 CB38 1 BUMPER
21 21424 1 CONNECTOR, Garden Hose
22 48031G 2 CLAMP, Hose
23 A1041 1 FILTER, Chemical Hose
24 A1040D 1 HOSE, 54" Chemical Inject
2 B4925B 1 PUMP, (See pages 18-19)
27 21217 4 MOUNT, Rubber Shock
28 BB30 1B 1 OIL BOTTLE
29 B2509 1 KIT, Nozzle Cleaning
30 B5 4 1 KIT, Nozzles QD
31 B32 3 1 GUN, 3200PSI M22-1.5
32 B3858 1 ASSY., Wand Ext. with QD
33 87815 1 GOGGLES, Safety
34 88 81 1 CARD, Owners Registration
35 185 94 1 MANUAL, Owners 01450-0
3 NSP 1 MANUAL, Honda
37 B5830 1 KIT, O-Ring Maintenance
38 B2218 1 O-RING
39 23707 4 SHCS, 5/1 " - 24 x 1"
40 185859B 1 WAND, w/Turbo
41 5852A 2 CLIP, Spring
42 185954 2 SCREW, 8-18 x 1/2"
43 B4224 2 SCREEN, Gun Inlet
44 97837 2 O-RING, Hi Pressure Trans
45 B3107 1 HOSE, Thermal Drain
4 48031B 1 CLAMP, Hose
47 92479 4 WASHER, M8 Conical Ribbed
48 52858 2 NUT, Locking M8 - 1.25

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

Generac Portable Products 2,400 PSI High Pressure Washer
19
PARTS LIST  PUMP
Item Part # Qty Description
1 B 18 1 O-RING, 1.6 5 ID x .103
9796 3 SHCS, M6 - 1 x 5
3 B5710 1 VALVE, 1/8 npt 1-5 PSI
4 97835 1 O-RING, Housing Seal
5 B3090 1 VALVE, Thermal Relief
6 93680 3 SEAL, Oil Piston
7 97831 3 SPACER, Pilot
8 B 70 1 HOUSING, Piston
9 B4813 1 ADAPTER, Engine
10 97841 3 CAP, Outlet Check Valve
11 40946 4 SHCS, M6-1.0 x 35
1 185715 0 KIT, AXIAL CAM
1 . . . . . . 1 O-RING, Engine Seal
2 . . . . . . 3 SHCS, M - 1 x 25
4 . . . . . . 1 O-RING, Housing Seal
13 . . . . . . 1 WASHER, Brg. 3 x 5 x
Thk
14 . . . . . . 2 ASSY., Brg. Cage 45 x 5
15 . . . . . . 3 WASHER, Brg. 45 x 5 x 1
1 . . . . . . 1 CAM, Axial 5. 3/4"SAE
17 185 87 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
3 185711 0 KIT, UNLOADER 300
21 . . . . . . 1 O-RING, Venturi & Seat, Black
24 . . . . . . 1 CAP, Unloader
25 . . . . . . 1 O-RING, Unloader Cap
2 . . . . . . 1 SPRING, Unloader
27 . . . . . . 1 PISTON, Unloader
29 . . . . . . 1 SEAT, Unloader
Item Part # Qty Description
31 18571 0 KIT, CHECK VALVES
11 . . . . . . 4 SHCS, M -1.0 x 35
32 . . . . . . 3 O-RING, Check Valve
33 . . . . . . ASSY., Check Valve
45 . . . . . . 3 O-RING, Check Valve, White
34 185531 0 KIT, HEAD BRASS EG
11 . . . . . . 4 SHCS, M -1.0 x 35
35 . . . . . . 1 HEAD, Pump
3 . . . . . . 1 PLUG, 1/8-28
4 . . . . . . 4 WASHER, M Flat
37 185713 0 KIT, PISTON & SPRING
1 . . . . . . 1 O-RING, Engine Seal
2 . . . . . . 3 SHCS, M - 1 x 25
4 . . . . . . 1 O-RING, Housing Seal
38 . . . . . . 3 RETAINER, Piston Spring
39 . . . . . . 3 PISTON, Dia. 15 x 5
40 . . . . . . 3 SPRING, Piston Return
41 185714 0 KIT, O-RING/SEAL 300
1 . . . . . . 1 O-RING, Engine Seal
2 . . . . . . 3 SHCS, M - 1 x 25
4 . . . . . . 1 O-RING, Housing Seal
. . . . . . 3 SEAL, Oil Piston
11 . . . . . . 4 SHCS, M -1.0 x 35
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
Item numbers 12, 17, 23, 31, 34, 37, and 41 are
service kits and include all parts shown within the box.
Certain parts may only be available as components of
a kit.

LIMITED PRESSURE WASHER WARRANTIES
(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.