Generac Power Systems 1540-0 User manual

Pressure Washer Owner’s Manual
3500PSI
Model No. 1540-0 (3500 PSI High Pressure Washer) Manual No. 187702GS Revision 7 (03/04/2003)
Questions? Help is just a moment away!
Preguntas? La ayuda es justa un momento lejos!
Call: Generac Pressure Washer Helpline
Llame: Línea Directa del Lavador a Presión de Generac - 1-800-270-1408 M-F 8-5 CT
Web: www.generac-portables.com
Generac Portable Products is a licensed trademark of Briggs & Stratton Power Products.
Generac Portable Products es una marca registrada licenciada de Briggs & Stratton Power Products.

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Generac Portable Products 3500 PSI Pressure Washer
TABLE OF CONTENTS
Safety Rules. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Know Your Pressure Washer . . . . . . . . . . . . . . . . . . . . . . 5
Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-10
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-13
Storage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Notes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Replacement Parts. . . . . . . . . . . . . . . . . . . . . . . . . . . 16-17
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, we reserve
the right to change, alter or otherwise improve the
product and this document at any time without prior
notice.
SAFETY RULES
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.
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.
Hazard Symbols and Meanings
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
Fire Explosion
Toxic Fumes
Hot Surface
Moving Parts
Electrical Shock
Slippery Surface Fall
Kickback
Flying Objects
Fluid Injection

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Generac Portable Products 3500 PSI Pressure Washer
• Keep water spray away from electric wiring or fatal electric
shock may result.
Spray contact with electrical wiring can result in
electrocution.
WARNING
• 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.
• Operate this unit on a stable surface.
• The cleaning area should have adequate slopes and drainage to
reduce the possibility of a fall due to slippery surfaces.
• Be extremely careful if you must use the pressure washer from
a ladder, scaffolding or any other relatively unstable location.
• Firmly grasp spray gun with both hands when using high
pressure spray to avoid injury if gun kicks back.
Use of pressure washer can create puddles and
slippery surfaces.
High pressure spray could cause you to fall if
you are too close to the cleaning surface.
WARNING
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 fuel 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 fuel
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 FUEL 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 fuel vapors.
Fuel and its vapors are extremely flammable and
explosive.
Fire or explosion can cause severe burns or
death.
WARNING
• NEVER aim spray gun at people, animals or plants.
• DO NOT allow CHILDREN to operate pressure washer.
• NEVER repair high pressure hose. Replace it.
• Keep high pressure hose connected to pump and spray gun
while system is pressurized.
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

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Generac Portable Products 3500 PSI Pressure Washer
• DO NOT tamper with governed speed.
• DO NOT operate pressure washer above rated pressure.
Excessively high or low operating speeds increase risk
of injury and damage to pressure washer.
CAUTION
WHEN ADJUSTING OR MAKING REPAIRS TO YOUR
PRESSURE WASHER
• Disconnect spark plug wire from spark plug and place wire
where it cannot contact spark plug.
Unintentional sparking can result in fire or
electric shock.
WARNING
• DO NOT point spray gun at glass when in jet spray mode.
• NEVER aim spray gun at plants.
High pressure spray may damage fragile items including
glass.
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
• Always wear eye protection when using this equipment or in
vicinity of where equipment is in use.
High pressure spray can cause paint chips or
other particles to become airborne.
WARNING
• DO NOT secure spray gun in open position.
• DO NOT leave spray gun unattended while machine is
running.
• NEVER use a spray gun which does not have a trigger lock or
trigger guard in place and in working order.
• Always be certain spray gun, nozzles and accessories are
correctly attached.
A pressure washer produces a high pressure spray
which increases risk of injury and damage to unit.
CAUTION
• If you have questions about intended use, ask dealer or
contact Briggs & Stratton Power Products.
• NEVER operate units with broken or missing parts, or
without protective housing or covers.
• DO NOT by–pass any safety device on this machine.
• Before starting pressure washer in cold weather, check all
parts of the equipment to be sure ice has not formed there.
• NEVER move machine by pulling on high pressure hose. Use
handle provided on unit.
• Check 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 pressure
washer.
• This equipment is designed to be used with Briggs & Stratton
Power Products authorized parts ONLY. If equipment is used
with parts that DO NOT comply with minimum specifications,
user assumes all risks and liabilities.
Improper treatment of pressure washer can damage it
and shorten its life.
CAUTION
• DO NOT touch hot surfaces.
• Stay clear of exhaust gases.
• Allow equipment to cool before touching.
Running engines produce heat and hot exhaust
gases. Temperature of muffler and nearby areas
can reach or exceed 150°F (65°C).
Fire or severe burns can occur.
WARNING

5
Generac Portable Products 3500 PSI Pressure Washer
KNOW YOUR PRESSURE WASHER
Read this owner’s manual and safety rules before operating your pressure washer.
Compare the illustrations with your pressure washer to familiarize yourself with the locations of various controls and
adjustments. Save this manual for future reference.
Chemical Injection Siphon/Filter
Air Filter — Protects engine by filtering dust and debris out
of intake air.
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 Siphon/Filter — Use to siphon
detergent or other pressure washer chemicals into the low
pressure stream.
Choke Lever — Prepares a cold engine for starting.
Fuel Valve — Used to turn fuel on and off to engine.
Fuel Tank — Fill tank with regular unleaded fuel. Always
leave room for fuel expansion.
High Pressure Hose — Connect one end to the water
pump and the other end to the spray gun.
High Pressure Outlet with Quick Connect— To connect
high pressure hose.
Nozzle Extension with Quick Connect — Allows you to
switch between five different spray tips.
Oil Fill Cap — Fill engine with oil here.
Pressure Control Knob — Varies the pressure of the high
pressure spray.
Pump — Develops high pressure.
Recoil Starter — Use for starting the engine manually.
Spray Gun — Controls the application of water onto
cleaning surface with trigger device. Includes safety latch.
Quick Connect Spray Tips — Chemical injection, 0°, 15°,
25°, and 40°: for various cleaning applications.
Throttle Lever—Sets engine in starting mode for recoil
starter and stops a running engine.
Water Inlet — Connect garden hose here.
Spray Gun
Nozzle Extension with
Quick Connect
High Pressure Hose
Throttle Lever
Choke Lever
Fuel Valve
Recoil Starter
(on front of engine)
Air Filter
Fuel Tank
Water Inlet
Pressure
Control Knob
Pump equipped with
Automatic Cool Down System
High Pressure Outlet
with Quick Connect
Oil Fill Cap
Quick Connect Spray Tips

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Generac Portable Products 3500 PSI Pressure Washer
ASSEMBLY
IMPORTANT: 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, handle, and parts box
included with pressure washer.
• Slice two corners at the end of carton from top to
bottom so the panel can be folded down flat, then
remove all packing material.
• Roll pressure washer out of carton.
Carton Contents
Items in the carton include:
• Main Unit
• High Pressure Hose
• Handle
• Accessory Box (includes the following):
• (2) Bottles of engine oil
• Owner’s registration card
• Safety goggles
• Bag containing 5 multi–colored quick connect
spray tips
• Maintenance kit
• Owner’s manual
• Engine manual
• Engine warranty card
• Emissions control warranty card
• Pump information sheet
• Spark arrester screen
• Spray gun with quick connect fitting
• Nozzle extension with quick connect fitting
• Handle hardware, including 4 carriage bolts and
4 flange nuts
If any of the above parts are missing or damaged, call the
pressure washer helpline at 1–800–270–1408.
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:
1. Fill out and send in registration card.
2. Attach handle to main unit.
3. Add oil to engine.
4. Add fuel to fuel tank.
5. Remove and discard tape from domed oil filler cap on
top of pump.
6. Connect high pressure hose to spray gun and pump.
7. Connect water supply to pump.
8. Connect nozzle extension to spray gun.
9. Select and install desired quick connect spray tip.
Attach Handle to the Pressure
Washer
Use either a 13mm or adjustable wrench to attach the
handle to the pressure washer.
To attach handle to the pressure washer:
1. Slowly tip pressure washer forward and let it gently
rest on front bumper.
2. Align holes on handle with holes on base.
3. Insert carriage bolts provided to hold handle in place
(Figure 1).
4. Secure handle to pressure washer using four provided
flange nuts.
5. Slowly tip pressure washer back in place and insert
multi–colored quick connect spray tips in spaces
provided in handle.
Figure 1 — Attach Handle to Pressure Washer

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Generac Portable Products 3500 PSI Pressure Washer
Add Engine Oil and Fuel
• Place pressure washer on a level surface.
• Refer to engine owner’s manual and follow oil and fuel
recommendations and instructions.
NOTE: Check oil often during engine break–in. Refer to
engine owner’s manual for recommendations.
Connect Hose and Water Supply to
Pump
IMPORTANT: To avoid pump damage, you must
assemble the nozzle extension to the spray gun and attach
all hoses before you start the engine.
1. Remove and discard tape from domed oil filler cap on
top of pump.
2. Uncoil high pressure hose and attach quick connect end
of hose to base of spray gun (Figure 2). Pull down on
collar of quick connect, slide onto spray gun and let go
of collar. Tug on hose to be sure of a tight connection.
NOTE: Remove and discard all pump shipping caps before
attaching hoses.
3. Similarly, attach other end of high pressure hose to
high pressure outlet on pump. Pull down on collar of
quick connect, slide onto pump and let go of collar.
Pull on hose to be sure of a tight connection.
4. Before connecting garden hose to water inlet, inspect
inlet screen (Figure 3). Clean screen if it contains
debris, replace if damaged. DO NOT RUN PRESSURE
WASHER IF SCREEN IS DAMAGED.
5. Run water through garden hose for 30 seconds to
clean out any debris. Turn off water.
IMPORTANT: DO NOT siphon standing water for the
water supply. Use ONLY cold water (less than 100°F).
6. Connect garden hose (not to exceed 50 feet in length)
to water inlet.Tighten by hand (Figure 3).
7. Turn ON water and squeeze trigger on spray gun to
purge pump system of air and impurities.
Checklist Before Starting Engine
Review the unit’s assembly to confirm you have performed
all of the following:
1. Make sure handle is in place and secure.
2. Check that oil has been added to proper level in
engine crankcase.
3. Add proper fuel to fuel tank.
4. Check for properly attached hose connections.
Connect high
pressure hose
here.
Figure 2 — Connect High Pressure Hose to Spray Gun
CAUTION
• Refer to engine manual for oil and fuel fill information.
• Damage to equipment resulting from failure to follow this
instruction will void warranty.
Any attempt to crank or start the engine before it has
been properly filled with the recommended oil will result
in equipment failure.
Inspect inlet
screen. DO NOT
use if damaged;
clean if dirty.
Figure 3 — Connect Garden Hose to Water Inlet
CAUTION
• Damage to equipment resulting from failure to follow this
instruction will void warranty.
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.
• Always wear eye protection when using this equipment or in
vicinity of where equipment is in use.
• Before starting the pressure washer, be sure you are wearing
adequate eye protection.
High pressure spray can cause paint chips or
other particles to become airborne.
WARNING

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Generac Portable Products 3500 PSI Pressure Washer
5. Check to make sure there are no kinks, cuts, or
damage to high pressure hose.
6. Provide a proper water supply (not to exceed 100°F)
at an adequate flow.
7. Be sure to read “Safety Rules” and “How To Use Your
Pressure Washer” before using the pressure washer.
HOW TO USE PRESSURE
WASHER
If you have any problems operating your pressure washer,
please call the pressure washer helpline at
1-800-270-1408.
How to Start Engine
The best way to start your pressure washer for the first
time is to follow these instructions step–by–step. This
starting information also applies if you have let the it sit idle
for at least a day.
1. Place pressure washer near an outside water source
capable of supplying water at a flow rate greater than
5.0 gallons per minute and no less than 20 PSI at
pressure washer end of garden hose.
2. Make sure unit is in a level position.
3. Check that high pressure hose is connected to spray
gun and pump. See “Preparing Pressure Washer for
Use” for illustrations.
4. Connect garden hose to water inlet on pressure
washer pump. Turn ON the water.
5. Squeeze trigger on gun until you have a steady stream
of water. This purges pump of air and impurities.
6. Attach nozzle extension to spray gun. Tighten by hand
(Figure 4).
7. Apply safety latch to spray gun trigger (Figure 5).
8. Select desired quick connect spray tip and insert it into
end of nozzle extension (see “How To Use Spray
Tips”).
9. Start engine according to instructions given in engine
owner’s manual.
NOTE: Always keep the Throttle Control lever in the
“Fast” position when operating the pressure washer.
How to Stop Pressure Washer
• Turn engine off according to instructions given in engine
owner’s manual.
•Squeeze trigger on the spray gun to relieve
pressure in the hose.
NOTE: A small amount of water will squirt out when you
release the pressure.
Figure 4 — Connect Nozzle Extension to Spray Gun
Safety Latch
Figure 5 — Spray Gun with Safety Latch Engaged
CAUTION
• Damage to equipment resulting from failure to follow this
instruction will void warranty.
DO NOT run the pump without the water supply
connected and turned on.
CAUTION
• Squeeze trigger on spray gun each time recoil starter is
pulled and engine fails to start.
Avoid injury from kickback.

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Generac Portable Products 3500 PSI Pressure Washer
How to Use Spray Tips
The quick–connect on the nozzle extension allows you to
switch between several different spray tips. The spray tips
vary the spray pattern as shown below (Figure 6).
Follow these instructions to change spray tips:
1. Engage safety latch on spray gun.
2. Pull back collar on quick–connect and pull current
spray tip off. Store spray tips in space provided on
handles storage panel.
3. Select desired spray tip:
• For gentle rinse, select white 40° or green 25°
spray tip.
• To scour surface, select yellow 15° or red 0° spray
tip.
• To apply chemical, select black spray tip.
4. Pull back on collar, insert new spray tip and release collar.
Tug on spray tip to make sure it is securely in place.
5. For most effective cleaning, keep spray tip from 8 to
24 inches away from cleaning surface. If you get spray
tip too close, you may damage cleaning surface. DO
NOT get closer than 6 inches when cleaning tires.
Cleaning and Applying Chemical
IMPORTANT: Use soaps designed specifically for
pressure washers. Household detergents could damage
the pump.
To apply detergent follow these steps:
1. Review spray tip use.
2. Prepare detergent solution as required by
manufacturer.
3. Place small filter end of detergent siphoning tube into
detergent container.
4. Make sure black spray tip is installed.
NOTE: Detergent cannot be applied with the high
pressure spray tips (White, Green, Yellow, or Red).
• NEVER exchange spray tips without locking the safety latch
on the trigger.
A pressure washer produces a high pressure spray
which increases risk of injury and damage to unit.
CAUTION
White
40°
Green
25°
Black Yellow
15°
Red
0°
Low Pressure
Use to apply
chemical
High
Pressure
Figure 6 — Quick Connect Spray Tips
CAUTION
• Starting the engine without all the hoses connected and
without the water turned ON will damage the pump.
• Damage to equipment resulting from failure to follow this
instruction will void warranty.
You must attach all hoses before you start the engine.
CAUTION
• When inserting the filter into a detergent solution bottle,
route the tube so as to keep it from inadvertently contacting
the hot muffler.
Keep the chemical injection tube from coming in contact
with the hot muffler.

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Generac Portable Products 3500 PSI Pressure Washer
5. Make sure garden hose is connected to water inlet.
Check that high pressure hose is connected to spray
gun and pump and start engine.
6. Apply detergent to a dry surface, starting at lower
portion of area to be washed and work upward, using
long, even, overlapping strokes.
7. Allow detergent to soak in between 3–5 minutes
before washing and rinsing. Reapply as needed to
prevent surface from drying. DO NOT allow detergent
to dry on (prevents streaking).
IMPORTANT: You must flush the chemical injection
system after each use by placing the filter into a bucket of
clean water, then run the pressure washer in low pressure
for 1-2 minutes.
Pressure Washer Rinsing
After you have applied detergent, scour the surface
and rinse it clean as follows:
1. Apply safety latch to spray gun.
2. Remove black chemical spray tip from nozzle
extension.
3. Select and install desired high pressure spray tip
following the instructions “How to Use Spray Tips”.
4. Increase (decrease) spray pressure by turning pressure
control knob clockwise (counterclockwise) (Figure 7).
Use lower pressure to wash items such as a car or
boat. Use higher pressure to strip paint and degrease
driveways.
5. Apply a high pressure spray to a small area and check
surface for damage. If no damage is found, assume it is
okay to continue rinsing.
6. 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 temperatures
above 125°F. The system engages to cool the pump by
discharging the warm water onto the ground.
Pressure
Control
Knob
Figure 7 — Pressure Control Knob.
• Keep spray nozzle between 8 to 24 inches away from cleaning
surface.
• Operate this unit on a stable surface.
• Be extremely careful if you must use the pressure washer from
a ladder, scaffolding or any other relatively unstable location.
• Firmly grasp spray gun with both hands when using high
pressure spray to avoid injury if gun kicks back.
High pressure spray could cause you to fall if
you are too close to the cleaning surface.
WARNING

11
Generac Portable Products 3500 PSI Pressure Washer
SPECIFICATIONS
Outlet Pressure . . . . . 3,500 psi
Flow Rate . . . . . . . . . . 4.0 gallons per minute (gpm)
Detergent . . . . . . . . . . Use 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
Pump Oil . . . . . . . . . . . See pump info sheet
GENERAL MAINTENANCE
RECOMMENDATIONS
The pressure washer warranty does not cover items that
have been subjected to operator abuse or negligence. To
receive 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 maintenance in this manual, the pump information
sheet, and the engine owner’s manual should be made at
least once each season.
• Once a year you should clean or replace the spark plug,
clean or replace the air filter and check the spray gun
and nozzle extension assembly for wear. A new spark
plug and clean air filter assure proper fuel-air mixture
and help your engine run better and last longer. Please
refer to your engine owner’s manual for more details.
• If equipped with inflatable tires, keep the air pressure at
the value marked on the tire or within 15 and 40 psi.
Before Each Use
• Check engine oil level.
• Check water inlet screen for damage.
• Check in-line filter for damage.
• Check high pressure hose for leaks.
• Check detergent siphoning tube and filter for damage.
• Check spray gun, nozzle extension, and spray tips 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.
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.
1. Place chemical injection siphon/filter in a bucket full of
clean water.
2. Attach black low pressure spray tip.
3. Flush for 1-2 minutes.
4. Shut off 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.
• NEVER repair high pressure hose. Replace it.
• Replacement hose rating MUST exceed maximum pressure
rating of unit.
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

12
Generac Portable Products 3500 PSI Pressure Washer
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 8 and service the in-line filter if it becomes
clogged, as follows:
1. Detach spray gun and nozzle extension from high
pressure hose. Detach nozzle extension from spray
gun and remove o-ring and screen from nozzle
extension. Flush screen, spray gun, and adjustable
nozzle extension with clean water to clear debris.
2. If screen is damaged, the o-ring kit contains a
replacement in-line filter screen and o-ring. If
undamaged, reuse screen.
3. Place in-line filter screen into threaded end of nozzle
extension. Direction does not matter. Push screen in
with eraser end of a pencil until it rests flat at bottom
of opening. Take care to not bend screen.
4. Place o-ring into threaded end of nozzle extension.
Push o-ring snugly against in-line filter screen.
5. Assemble nozzle extension to spray gun, as described
earlier in this manual.
Purge Pump of Air and
Contaminants
To remove air from the pump, follow these steps:
1. Set up pressure washer as described in “Preparing
Pressure Washer For Use”. Connect water supply and
turn water on.
2. Pull trigger on spray gun and hold.
3. When water supply is steady and constant, engage
safety latch.
To remove contaminants from the pump, follow
these steps:
1. Set up pressure washer as described in “Preparing
Pressure Washer For Use”. Connect water supply and
turn water on.
2. Start engine according to instructions in “To Start
Pressure Washer”.
3. Remove nozzle extension from spray gun.
4. Squeeze trigger on spray gun and hold.
5. When water supply is steady and constant, engage
safety latch and reattach nozzle extension.
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 spray tip
clogged or restricted with foreign materials, such as dirt,
etc. To correct the problem, immediately clean the spray
tip using the tools included with your pressure washer and
follow these instructions:
1. Shut off engine and turn off water supply.
2. Remove spray tip from end of nozzle extension.
3. Remove in-line filter from other end of nozzle
extension.
4. Use wire included in kit or a small paper clip to free
any foreign material clogging or restricting spray tip
(Figure 9).
5. Using a garden hose, remove additional debris by back
flushing water through nozzle extension (Figure 10).
Back flush between 30 to 60 seconds.
Nozzle Extension
Filter Screen
O-ring
Figure 8 — Clean In-Line Filter
Figure 9 — Nozzle Maintenance
Use wire here
to remove
debris.
Figure 10 — Backflush Nozzle Extension

13
Generac Portable Products 3500 PSI Pressure Washer
6. Reinstall spray tip and in-line filter into nozzle extension.
7. Reconnect nozzle extension to spray gun.
8. Reconnect water supply, turn on water, and start engine.
9. Test pressure washer by operating with each Quick
Connect spray tips.
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.
An O-Ring Maintenance Kit is provided with your pressure
washer 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.
KEEP OUT OF REACH OF CHILDREN. DON'T
POLLUTE. CONSERVE RESOURCES. RETURN
USED OIL TO COLLECTION CENTERS.
PUMP MAINTENANCE
See the pump information sheet for instructions on how to
properly maintain the pump.
PREPARING THE UNIT
FOR STORAGE
Water should not remain in the unit for long periods of
time. Sediments or 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 detergent siphoning tube by placing the filter into
a pail of clean water while running pressure washer in
low pressure mode. 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 pump saver to prevent corrosion build up and
freezing of pump.
5. Store unit in a clean, dry area.
Protecting the Pump
To protect the pump from damage caused by mineral
deposits or freezing, use PumpSaver to treat pump. This
prevents freeze damage and lubricates pistons and seals.
NOTE: PumpSaver, model number 01559, is available as an
optional accessory. It is not included with the pressure washer.
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 prepare the engine for storage.
• Used motor oil has been shown to cause skin cancer in
certain laboratory animals.
• Thoroughly wash exposed areas with soap and water.
Avoid prolonged or repeated skin contact with used
motor oil.
CAUTION
CAUTION
• Failure to do so will permanently damage your pump and
render your unit inoperable.
• Freeze damage is not covered under warranty.
You must protect your unit from freezing temperatures.
• Always wear eye protection when using PumpSaver.
Read and follow all cautions and warnings on the
PumpSaver can label.
CAUTION

14
Generac Portable Products 3500 PSI Pressure Washer
NOTES

15
Generac Portable Products 3500 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 spray tip installed.
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. Spray tip is obstructed.
10. Pump is faulty.
1. Replace spray tip with high pressure
spray tip.
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 spray tip.
10. Contact Authorized service facility.
Detergent fails to mix with
spray.
1. Detergent siphoning tube is not
submerged.
2. Chemical filter is clogged or
cracked.
3. Dirty in-line filter.
4. Low pressure spray tip installed.
1. Insert detergent siphoning tube into
detergent.
2. Clean or replace filter/detergent
siphoning tube.
3. See “Check In-Line Filter”.
4. Replace spray tip with high pressure
spray tip.
Engine shuts down during
operation.
Out of gasoline.
Fill fuel tank.

16
Generac Portable Products 3500 PSI Pressure Washer
EXPLODED VIEW — UNIT

17
Generac Portable Products 3500 PSI Pressure Washer
PARTS LIST — UNIT
Item Part # Qty. Description
1 NSP 1 ENGINE
2 B2043GS 8 BOLT, Carriage
3 B190548AGS 1 BASE
4 CB3861CGS 1 HANDLE
5 B4160GS 1 DECAL, Instructions
6 99583GS 9 NUT
7 B2150GS 1 HOOK, Square Neck Gun
8 B2516GS 2 CAP, Vinyl
9 CB4105GS 1 BUMPER
10 30809GS 5 GROMMET
11 187974AGS 1 DECAL, 5 QD Nozzles
12 187736GS 1 DECAL, Unit
13 88521GS 2 WHEEL
14 190146GS 2 PUSHNUT
15 48031GGS 1 CLAMP, Hose
16 A1040DGS 1 HOSE, Chemical Inject
17 A1041GS 1 FILTER, Chemical Hose
18 87815GS 1 GOGGLES, Safety
19 B1436BGS 1 GUN, with Molded Grip
20 187702GS 1 MANUAL, Owners
21 97837GS 1 O-RING, Hi Pressure Transfer
22 B1464GS 1 MANUAL, Honda
23 BB3061BGS 2 BOTTLE, Oil
25 191922GS 1 KIT, Maintenance
26 B4224GS 1 SCREEN, Gun Inlet
27 B3858GS 1 ASSY, Wand Ext. with QD
28 B4847GS 1 KIT, Spray Tips QD
29 B4805GS 1 HOSE
30 187744GS 1 CARD, Owners Registration
31 52859GS 4 NUT, Lock
32 64416GS 4 BOLT
33 B1554GS 0 VALVE, Thermal Relief
35 188194GS 2 RIVET, Blind
37 191413GS 2 VIBE MOUNT, with Washer
38 95458GS 0 CONNECTOR, Quick Connect
39 186839GS 0 CONNECTOR, Garden Hose
40 NSP 1 * ASSY, Pump, Cat (Includes Items 33, 38 & 39)
41 23645GS 4 SCREW
42 22237GS 4 WASHER, Lock
43 22131GS 4 WASHER
44 188055GS 4 SPACER
45 188054GS 1 KEY
46 B3107GS 1 HOSE, Thermal Drain
47 48031BGS 1 CLAMP, Hose
48 30809GS 1 GROMMET
Note: * Complete Pump available from Cat Pumps only.

18
Lavadora de Presión 3500 PSI de Generac Portable Products
TABLA DE CONTENIDOS
Reglas De Seguridad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18-20
Conozca Su Generador . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Ensamblaje. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22-23
Funcionamiento . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24-26
Especificaciones Del Producto . . . . . . . . . . . . . . . . . . . . . . . . . 27
Mantenimiento. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27-29
Almacenamiento. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Diagnosticos De Averías. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Piezas De Recambio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16-17
Garantia . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
DESCRIPCIÓN DEL EQUIPO
Lea este manual de manera cuidadosa y
familiarícese con su lavadora a presión. Conozca
sus usos, sus limitaciones y cualquier peligro
relacionado con el mismo.
Se ha hecho cada esfuerzo posible para asegurarse que la
información que aparece en este manual es exacta y se encuentra
actualizada. Sin embargo, nosotros se reserva el derecho a
cambiar, alterar o de otra manera mejorar, el producto y este
documento en cualquier momento, sin previo aviso.
REGLAS DE SEGURIDAD
Éste es el símbolo de alerta de seguridad. Sirve
para advertir al usuario de un posible riesgo para
su integridad física. Siga todos los mensajes de
seguridad que figuren después de este símbolo
para evitar lesiones o incluso la muerte.
El símbolo de alerta de seguridad ( ) es usado con una palabra
(PELIGRO, ADVERTENCIA, PRECAUCIÓN), un mensaje por
escrito o una ilustración, para alertarlo acerca de cualquier
situación de peligro que pueda existir. PELIGRO indica un riesgo
el cual, si no se evita, causará la muerte o una herida grave.
ADVERTENCIA indica un riesgo el cual, si no se evita, puede
causar la muerte o una herida grave. PRECAUCIÓN indica un
riesgo, el cual, si no se evita, puede causar heridas menores o
moderadas. PRECAUCIÓN, cuando se usa sin el símbolo de
alerta, indica una situación que podría resultar en el daño del
equipo. Siga los mensajes de seguridad para evitar o reducir los
riesgos de heridas e inclusive la muerte.
Símbolos de Peligro y Significados
En el estado de California es obligatorio, según la ley, el uso de
apagachispas (Sección 4442 del Código de Recursos Públicos de
California). Otros estados pueden tener leyes similares. Las leyes
federales se aplican en tierras federales. Si equipa el silenciador
con un apagachispas, este deberá ser mantenido en buenas
condiciones de trabajo.
El escape del motor de este producto contiene
elementos químicos reconocidos en el Estado de
California por producir cáncer, defectos de nacimiento u
otros daños de tipo reproductivo.
ADVERTENCIA
Fuego Explosión
Gases Tóxicos
Superficie Caliente
Partes en Movimiento
Descarga Eléctrica
Superficies Resbalosas Caer
Contragolpe
Objetos Voladores
Inyección Líquida

19
Lavadora de Presión 3500 PSI de Generac Portable Products
• Mantenga el chorro del agua alejado de alambrados eléctricos, de lo
contrario podrían ocurrir descargas eléctricas fatales.
El contacto del rocío con alambrado eléctrico puede
tener como resultado electrocution.
ADVERTENCIA
• Opere el lavadora de presión SOLAMENTE al aire libre.
• Utilice un respirador o máscara siempre que exista la posibilidad de
inhalar vapores.
• Lea todas las instrucciones de la máscara para asegurarse de que le
brindará la protección necesaria contra la inhalación de vapores
nocivos.
Al motor funcionar, se produce monóxido de
carbono, un gas inodoro y venenoso.
El respirar el monóxido de carbono, producirá
náusea, desmayo o la muerte.
PELIGRO
• Mantenga la boquilla de rociado de 8 a 24 pulgadas de la superficie de
limpieza.
• Opere y almacene esta unidad sobre una superficie estable.
• El área de limpieza deberá tener inclinaciones y drenajes adecuados
para disminuir la posibilidad de caídas debido a superficies resbalosas.
• Sea extremadamente cuidadoso si usa la máquina lavadora a presión
desde una escalera, andamio o cualquier superficie relativamente
inestable.
• Sujete la pistola de la hidrolavadora firmemente con ambas manos
cuando utilice el rociado a alta presión. De esta manera evitará
lesiones producidas por el posible golpe de la pistola hacia atrás.
El uso de lavadora de presión puede crear los
charcos y superficies resbalosas.
El rociado de la alta presión podría hacerlo caer si
está muy cerca de la superficie de limpieza.
ADVERTENCIA
CUANDO AÑADA COMBUSTIBLE
• Apague el generador (posición OFF) y déjelo enfriar al menos por
2 minutos antes de remover la tapa de la gasolina.
• Llene el tanque al aire libre.
• NO llene demasiado el tanque. Permita al menos espacio para la
expansión del combustible.
• Mantenga la gasolina alejada de chispas, llamas abiertas, pilotos, calor
y otras fuentes de ignición.
• NO encienda un cigarrillo o fume.
CUANDO OPERE EL EQUIPO
• NO incline el motor o el equipo, de tal manera que la gasolina se
pueda derramar.
• NO rocíe líquidos inflamables.
CUANDO TRANSPORTE O REPARE EL EQUIPO
• Transporte o repare el equipo con el tanque de combustible vacío, o
con la válvula para apagar el combustible, apagada (posición OFF).
CUANDO ALMACENE O GUARDE EL EQUIPO CON
COMBUSTIBLE EN EL TANQUE
• Almacene alejado de calderas, estufas, calentadores de agua,
secadoras de ropa u otros aparatos electrodomésticos que posean
pilotos u otras fuentes de ignición, porque ellos pueden encender los
vapores de la gasolina.
La gasolina y sus vapores son extremadamente
inflamables y explosivos.
El fuego o una explosión pueden causar quemaduras
severas e inclusive la muerte.
ADVERTENCIA
• NUNCA apunte la pistola a la gente, animales o plantas.
• NO permita en ningún momento que NIÑOS operen la máquina
lavadora a presión.
• NUNCA repare la manguera de alta presión. Remplacela.
• Mantenga conectada la manguera a la máquina o a la pistola de
rociado cuando el sistema esté presurizado.
La corriente de agua de alta presión que produce
este equipo pueden perforar la piel y sus tejidos
profundos, ocasionando lesiones serias y posible
amputación.
ADVERTENCIA

20
Lavadora de Presión 3500 PSI de Generac Portable Products
• NO juegue con partes que puedan aumentar o disminuir la velocidad
de mando.
• NO opere la máquina lavadora a presión con un valor de presión
superior a su clasificación de presión.
Hacer funcionar el motor a velocidades excesivas aumenta el
riesgo de lesiones personales.
PRECAUCIÓN
• NO apunte la pistola de rociado al vidrio cuando esté en el modo de
rociado a chorro.
• NUNCA apunte la pistola a plantas.
El rociado de alta presión puede dañar elementos frágiles,
incluyendo el vidrio.
PRECAUCIÓN
• NO use ropa suelta, joyas o elementos que puedan quedar atrapados
en el arranque o en otras partes rotatorias.
• Ate para arriba el pelo largo y quite la joyería.
El arrancador y otras piezas que rotan pueden
enredar las manos, el pelo, la ropa, o los accesorios.
ADVERTENCIA
• Siempre use protección para los ojos cuando utilice este equipo o
cuando esté cerca de donde se esté usando el equipo.
El rociado de alta presión puede hacer que partículas
pequeñas de pintura u otras partículas salgan
disparadas y viajen a altas velocidades.
ADVERTENCIA
CUANDO AJUSTE O HAGA REPARACIONES A SU
MÁQUINA LAVADORA DE PRESIÓN
• Siempre desconecte el alambre de la bujía y colóquelo donde no
pueda entrar en contacto con la bujía.
Chispear involuntario puede tener como resultado el
fuego o el golpe eléctrico.
ADVERTENCIA
• NO toque las superficies calientes.
• Manténgase alejado de los gases de escape.
• Permita que el equipo se enfríe antes de tocarlo.
Los motores en funcionamiento producen calor y
gases de escape a altas temperaturas. La temperatura
del silenciador y de las zonas cercanas puede alcanzar
o superar los 65 ºC (150 ºF)
Se pueden producir incendios o quemaduras graves.
ADVERTENCIA
• NO asegure la pistola de rociado en la posición (open = abierto).
• NO abandone la pistola de rociado cuando la máquina esté en
funcionamiento.
• NUNCA utilice una pistola de rociado que no tenga un seguro para
gatillo o protección para gatillo en su lugar y en buenas condiciones.
• Siempre asegúrese de que la pistola de rociado, boquillas y accesorios
estén conectados correctamente.
El lavadora de presión produce un rocío alto de la presión
cuál riesgo de aumentos de la herida y dañe a la unidad.
PRECAUCIÓN
• Si usted tiene alguna pregunta acerca de las finalidades de uso del
generador, pregúntele a su concesionario o contacte a Briggs &
Stratton Power Products.
• NUNCA deberán ser operadas las unidades con partes rotas o
ausentes, o sin la caja o cubiertas de protección.
• NO eluda ningún dispositivo de seguridad de esta máquina.
• Antes de poner en marcha la máquina lavadora a presión en clima
frío, revise todas las partes del equipo y asegúrese de que no se haya
formado hielo sobre ellas.
• NUNCA mueva la máquina halando la manguera de alta presión.
Utilice la manija que viene con la unidad.
• Revise que el sistema de combustible no presente fugas o signos de
deterioro, como mangueras desgastadas o porosas, sujetadores flojos
o ausentes, tapa o tanque dañados. Corrija todos los defectos antes
de operar la máquina lavadora a presión.
• El equipo de alta presión está diseñado para ser utilizado
UNICAMENTE con las partes autorizadas Briggs & Stratton Power
Products. Si utiliza este equipo con partes que no cumplan con las
especificaciones mínimas, el usuario asume todos los riesgos y
responsabilidades.
El tratamiento inadecuado del lavadora de presión puede
dañarlo y acortar su vida productiva.
PRECAUCIÓN