2700PSI
This pressure
washer is
equipped with an
Automatic Cool
Down System.
See page 11 for
details
This symbol points out important safety instructions, which, if not followed, could
endanger the personal safety and/or property of yourself and others. Read and follow
all instructions in the manual before attempting to operate this unit.
Model No. 12931 (2700 PSI High Pressure Washer) Manual No. B3836 Revision 0 (1/11/99)
Owner’s Manual
Problems?
Questions?
Before taking your unit
back to the store,
call the pressure washer
helpline at
1-800-270-1408
M-F 8-5 CST
GENERAC
The Reliable Ones
Generac 2700PSI High Pressure Washer
GENERAC
The Reliable Ones
2
CAUTION! Always disconnect spark plug wire and place wire where it cannot contact spark plug to
prevent accidental starting when setting up, transporting, adjusting or making repairs to your high pressure
washer.
Engine exhaust gases contain DEADLY carbon
monoxide gas. This dangerous gas, if breathed
in sufficient concentrations, can cause
unconsciousness or even death. Operate this
equipment only in the open air where adequate
ventilation is available.
Gasoline is highly FLAMMABLE and its vapors
are EXPLOSIVE. Do not permit smoking, open
flames, sparks or heat in the vicinity while
handling gasoline. Avoid spilling gasoline on a hot
engine. Allow unit to cool for 2 minutes before
refueling. Comply with all laws regulating storage
and handling of gasoline.
Use this pressure washer in areas away from
combustible materials, combustible fumes or
dust.
The high pressure equipment is designed to be
used with Generac authorized parts only. If you
use this equipment with parts that do not comply
with minimum specifications, the user assumes
all risks and liabilities.
Some chemicals or detergents may be harmful
if inhaled or ingested, causing severe nausea,
fainting or poisoning.
Do not allow CHILDREN to operate the pressure
washer at any time.
Operate engine only at governed speed. Running
the engine at excessive speeds increases the
hazard of personal injury. Do not tamper with
parts which may increase or decrease the
governed speed.
Do not wear loose clothing, jewelry or anything
that may be caught in the starter or other rotating
parts.
Before starting the pressure washer in cold
weather, check all parts of the equipment and be
sure ice has not formed there.
Units with broken or missing parts, or without
protective housing or covers should NEVER be
operated.
The muffler and air cleaner must be installed and
in good condition before operating the pressure
washer. These components act as spark arrestors
if the engine backfires.
Check the fuel system for leaks or signs of
deterioration such as chafed or spongy hose,
loose or missing clamps or damaged tank or cap.
Correct all defects before operating the pressure
washer.
Do not spray flammable liquids.
Never aim the gun at people, animals or plants.
The high pressure stream of water that this
equipment produces can pierce skin and its
underlying tissues, leading to serious injury.
High pressure spray can cause paint chips or
other particles to become airborne and fly at high
speeds.
The engine exhaust from this product
contains chemicals known to the State
of California to cause cancer, birth
defects, or other reproductive harm.
WWAARRNNIINNGG::
Important! Safety Rules Important!
Generac 2700PSI High Pressure Washer
GENERAC
The Reliable Ones
3
Always wear eye protection when you use this
equipment or when you are in the vicinity where
the equipment is in use.
Never move the machine by pulling on the high
pressure hose. Use the handle provided on the
top of the unit.
Always be certain the spray gun, nozzles and
accessories are correctly attached.
Never use a spray gun which does not have a
trigger lock or trigger guard in place and in working
order.
Use a respirator or mask whenever there is a
chance that vapors may be inhaled. Read all
instructions with the mask so you are certain it
will provide the necessary protection against
inhaling harmful vapors.
High pressure spray may damage fragile items
including glass. Do not point spray gun at glass
when in the high pressure spray mode.
Keep the hose connected to machine and the
spray gun while the system is pressurized.
Disconnecting the hose while the unit is
pressurized is dangerous.
Hold the spray gun firmly in your hands before
you start the unit. Failure to do so could result in
an injury from a whipping spray gun. Do not leave
the spray gun unattended while the machine is
running.
The cleaning area should have adequate slopes
and drainage to reduce the possibility of a fall due
to slippery surfaces.
Keep water spray away from electric wiring or fatal
electric shock may result.
Do not secure trigger gun in the pull-back (open)
position.
Do not by-pass any safety device on this machine.
The muffler and engine heat up during operation
and remain hot immediately after shutting it down.
Avoid contact with a hot muffler or engine or you
could be severely burned.
Operate and store this unit on a stable surface.
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 hose can develop leaks from wear,
kinking, abuse, etc. Water spraying from a leak
is capable of injecting material into skin. Inspect
hose each time before using it. Check all hoses
for cuts, leaks, abrasions or bulging of cover, or
damage or movement of couplings. If any of
these conditions exist, replace hose immediately.
Never repair high pressure hose. Replace it with
another hose that meets minimum pressure rating
of your pressure washer.
Important! Safety Rules Important!
Generac 2700PSI High Pressure Washer
GENERAC
The Reliable Ones
4
CONGRATULATIONS on your purchase of a
GENERAC high pressure washer. It has been
designed, engineered and manufactured to give you
the best possible dependability and performance.
Should you experience any problem you cannot
easily remedy, please contact your nearest
GENERAC Authorized Service facility, or call the 1800 number listed on the front of this manual. We
have competent, well-trained technicians and the
proper tools to service or repair this unit.
Please read and retain this manual. The instructions
will enable you to assemble and maintain your high
pressure washer properly.
CUSTOMER
RESPONSIBILITIES
Read and observe the safety rules.
Follow regular schedule in maintaining, caring for
and using your high pressure washer.
Follow the instructions under Customer
Responsibilities and Storage sections of this
Owner's Manual.
PRODUCT
SPECIFICATIONS
Pressure Washer Specifications
Outlet Pressure . . . . 2700 psi
Flow Rate . . . . . . . . . 2.7 gallons per minute (gpm)
Detergent Mix . . . . . . Use undiluted detergent
approved for pressure
washers
Water Supply . . . . . . Not to exceed 140°F
Temperature
Automatic Cool . . . . Will cycle when water
Down System reaches 140°-145°F
Engine specifications
Engine Model . . . . . . Generac Power Systems GN
220 Model EHC 040471
Rated Horsepower . . 7.8
Displacement . . . . . . 220cc
Spark Plug
Type . . . . . . . . RC-12YC
Set Gap To: . . 0.030 inch (0.76mm)
Gasoline Capacity . . 4.2 U.S. quarts
Oil . . . . . . . . . . . . . . . SAE 30
In the State of California a spark arrestor is required
by law (Section 4442 of the California Public
Resources Code). Other states may have similar
laws. Federal laws apply on federal lands.
NOTE: The spark arrestor must be maintained in
effective working order by the owner/operator.
You can order a replacement spark arrestor through
your authorized Generac service facility. See Engine
Owners Manual for part number.
Model Number 12931
Serial Number
Date of Purchase
The model and serial numbers will be found on a
decal attached to the pressure washer. record both
serial number and date of purchase and keep in a
safe place for future reference.
KNOW YOUR PRESSURE WASHER
Read this owners manual and safety rules before operating your high pressure washer.
Compare the illustrations with your high pressure washer to familiarize yourself with the locations of various
controls and adjustments. Save this manual for future reference.
Generac 2700PSI High Pressure Washer
GENERAC
The Reliable Ones
5
Automatic Cool Down System Cycles water
through pump when water reaches 140°-145°F. Warm
water will discharge from pump under base of unit.
This system prevents internal pump damage.
Chemical Valve Handle The handle allows you to
select the high pressure spray or the chemical spray
(located on the wand).
Dual Element Air Cleaner Uses a dry type filter
element and foam pre-cleaner to limit the amount of
dirt and dust that gets in the engine.
Dual Lance Must be connected to the spray gun.
Gas Tank Fill with regular unleaded gasoline.
Goggles Always use the enclosed goggles or other
eye protection when running your pressure washer.
High Pressure Hose Connect one end to water
pump and the other end to spray gun.
High Pressure Outlet Connection for high pressure
hose.
Primer Bulb Used for starting a cold engine.
Pump Develops high pressure.
Spark Arrestor Muffler Exhaust muffler lowers
engine noise and is equipped with a spark arrestor
screen, a USDA mandate for engine use in national
forests and parks.
Spray Gun Controls the application of water and
chemical onto cleaning surface with trigger device.
Includes safety latch.
Water Inlet Connection for garden hose.
Spray Gun
Chemical Valve Handle
High Pressure Hose
Goggles
Dual Element
Air Cleaner
Gas Tank
Water Inlet
Pump equipped with
Automatic Cool Down System
High Pressure Outlet
Spark Arrestor
Muffler
Primer Bulb
Dual Lance
Generac 2700PSI High Pressure Washer
GENERAC
The Reliable Ones
6
ASSEMBLY
Read entire owners manual before you attempt to
assemble or operate your new pressure washer.
Your new pressure washer has been assembled at
the factory with the exception of those parts left
unassembled for shipping purposes.
REMOVE PRESSURE
WASHER FROM CARTON
Remove parts box included with pressure washer.
Slice two corners at guide handle 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
Manual Bag
Owners Manual
Engine Owners Manual
Nozzle Cleaning Kit
ORing Maintenance Kit
StaBil® Brochure
STABIL®
Owner Registration Card
Parts Box (which includes the following):
Video
Engine Oil
Wireform
Goggles
Spray Gun
Dual Lance
High Pressure Hose
Handle
Handle Parts Bag (which includes the following):
2 carriage bolts
2 knobs
If any of the above parts are missing or damaged, call
the pressure washer helpline at 18002701408.
PREPARING THE
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:
Attach the handle and attach the wire form that
holds high pressure hose and spray gun.
Connect high pressure hose to the spray gun and
the pump and connect water supply to the pump.
Add oil to engine crankcase.
Add fuel to fuel tank.
Attach the Handle
Place the handle onto the bottom of the handle
supports already connected to the main unit. Make
sure the holes in the handle align with the holes in
the handle supports (Figure 1).
Note: It may be necessary to move the handle
supports from side to side in order to align the handle
so it will slide over the handle supports.
Figure 1 Attach the top of the handle to the
bottom of the handle.
Make sure
the holes in
the handle
supports
are aligned
with the
holes in the
handle.
Handle
Handle
Supports
Generac 2700PSI High Pressure Washer
GENERAC
The Reliable Ones
7
ASSEMBLY
Insert the carriage bolts from the outside through
the holes on the handle and attach the plastic
knobs on the inside. Tighten the knobs by hand
(Figure 2).
Insert the wire support with the longer arm positioned
on the left. From this view (from rear of unit), the hook
resembles a J
(Figure 3)
.
Add Engine Oil
WARNING! Any attempt to crank or start the
engine before being properly serviced with the
recommended oil will result in an engine
failure.
Note: When adding oil to the engine crankcase, use
only high quality detergent oil rated with API service
classification SF,SG, SH or SH/CD rated SAE 30
weight. Select the oils viscosity grade according to
your expected operating temperature:
Do Not Use SAE 10W40 Oil.
Although multi-viscosity oils (5W30, 10W30, etc.)
improve starting in cold weather, these multi-viscosity
oils will result in increased oil consumption when used
above 32°F. Check your engine oil level more
frequently to avoid possible damage from running
low on oil.
To fill unit with oil:
Place pressure washer on a level surface.
Clean area around oil fill and remove oil fill cap
(Figure 4).
Pour oil into the oil fill opening until it reaches point
of overflowing. DO NOT OVERFILL.
Note: The bottle of oil included with your pressure
washer contains more oil than the capacity of the
crankcase.
Install oil fill cap, hand tighten securely.
Note: Check Oil Often During Engine Breakin.
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. Fill tank to about 1/2" below the bottom of
the filler neck to provide space for fuel
expansion. Wipe away any fuel spillage from
engine and equipment before starting.
The manufacturer recommends fresh, clean unleaded
automotive gasoline.
Use clean fuel and store in approved containers.
Use clean fill funnels. Never use stale gasoline
left over from last season or gasoline stored for long
periods.
Figure 3 Fit wire form on handle.
Figure 4 Add oil to engine crankcase. Do not
attempt to start engine without
adding oil.
Figure 2 Insert the carriage bolts and attach
the knobs.
colder 32°F warmer
5W30 SAE 30
Oil Fill Cap
Make sure unit is on a level
surface before filling with oil!
Generac 2700PSI High Pressure Washer
GENERAC
The Reliable Ones
8
ASSEMBLY
Clean area around gas cap. Remove cap
(Figure 5).
Add UNLEADED gasoline, slowly, to fuel tank.
Use a funnel to prevent spillage.
Install gas cap and wipe up any spilled gasoline.
Connect Hose and Water
Supply to Pump
WARNING! You must assemble wand and
attach all hoses before you start engine.
Starting engine without all hoses connected
and water supplied will damage pump.
Uncoil high pressure hose and attach the end of the
hose with the threaded end to the base of the spray
gun (Figure 6). Tighten by hand.
Attach other end of high pressure hose to the high
pressure outlet on the pump (Figure 7). Tighten by
hand.
Before you connect your garden hose to the water
inlet, inspect the water inlet screen (see Figure 8).
Clean the screen if it contains debris or have it
replaced if damaged. Do not run the pressure
washer if the water inlet screen is damaged.
Connect garden hose to water inlet. Tighten firmly
by hand (Figure 8).
Turn on the water (open valve completely).
Squeeze trigger on gun to purge pump system of
air and impurities. Squeeze until a steady stream
appears.
WARNING! Before starting the pressure
washer, be sure you are wearing adequate eye
protection.
Attach dual lance to spray gun. Tighten by hand.
Figure 6 Connect high pressure hose
to spray gun.
Figure 5 Add gasoline to fuel tank.
Gas Cap
Connect High Pressure
Hose Here
Figure 7 Connect high pressure hose to
pump.
Connect High
Pressure Hose
Here
Figure 8 Connect the garden hose to water
inlet and turn ON the water.
Check Screen
for Damage
and Connect
Garden Hose
Here
Generac 2700PSI High Pressure Washer
GENERAC
The Reliable Ones
9
CHECKLIST BEFORE
STARTING ENGINE
If you have reached this point, look back over the
assembly to see if you have performed all of the
following.
Check for properly tightened hose connections
(high pressure and water supply). Make sure the
hoses have no kinks, cuts, or damage.
Check that oil has been added to proper level in
engine crankcase before trying to start the pressure
washer.
Add proper gasoline to fuel tank.
Provide proper water supply (not to exceed 140°F).
Be sure to read Safety Rules and Operation
sections before using the pressure washer.
HOW TO USE YOUR
PRESSURE WASHER
If you have any problems operating your pressure
washer, please call the pressure washer helpline at
1-800-270-1408.
How to Start Your Engine
The best way to start your engine-powered pressure
washer for the first time is to follow these instructions
step-by-step. This starting information also applies
whenever you start the engine after you have let the
pressure washer sit idle for at least a day.
This pressure washer requires a water source that
flows at least 3.0 gallons per minute. Do not attempt
to siphon water from a non-pressurized container.
Place the pressure washer close enough to an
outside water source so that no more than 50' of
garden hose is needed.
Check that the high pressure hose is tightly
connected to the spray gun and to the pump. See
ASSEMBLY section for illustrations.
Connect the garden hose to water inlet on the
pressure washer pump and turn the water valve on
all the way.
WARNING! Do not run pump without the
water supply connected and turned on. You
must follow this caution or the pump will be
damaged.
Remove dual lance from the spay gun.
Squeeze trigger on spray gun until a steady
stream of water appears.
Apply the safety latch to the spray gun trigger
(Figure 9).
Place the Run/Stop switch to Run.
Press the primer bulb 3 times, waiting 2 seconds
between each push
Note: For a warm engine, do not prime.
Grasp rope handle and pull slowly until you feel
some resistance. Then pull cord rapidly to
overcome compression, prevent kickback and start
the engine. Let rope return to starter slowly.
If after 3 pulls the engine fails to start, disengage the
spray gun safety latch, squeeze the trigger to relieve
water pressure, re-engage the spray gun safety latch
and pull the recoil starter handle rapidly (Max. 3
pulls).
How to Stop Your Pressure Washer
Move the Run/Stop switch to Stop.
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 spray out when
you release the pressure.
Figure 9 Safety Latch.
Safety Latch
Generac 2700PSI High Pressure Washer
GENERAC
The Reliable Ones
10
How to Use the Spray Gun and Dual
Lance
You now should know how to START your pressure
washer and how to STOP it. The information in this
section will tell you how to adjust pressure and apply
chemicals using the spray gun and dual lance.
DANGER! Never put hands in front of
nozzle.
For most effective cleaning, keep spray nozzle
between 8 to 24 inches away from cleaning
surface.
If you get spray nozzle too close, especially using
high pressure, you may damage the cleaning
surface.
Do not get closer than 6 inches when cleaning
automobile tires.
Applying Detergent
IMPORTANT: Use soaps designed specifically for
pressure washers. Household detergents could
damage the pump.
To apply detergent follow these steps:
Prepare the detergent solution as required by
chemical manufacturer. See chemical bottle for any
instructions
Hang the detergent solution on J hook of the
wireform on the handle.
Place small filter end of the chemical injecting tube
into the detergent container (Figure 10).
CAUTION: Keep the plastic injector tube
from coming in contact with the hot muffler.
This will damage the plastic tube. When
inserting the filter into a cleaning agent bottle,
route the tube so as to keep it from
inadvertently contacting the hot muffler.
Open the chemical valve handle (Figure 11).
IMPORTANT: Detergent cannot be applied without
the water source turned on.
Make sure garden hose is connected to water inlet.
Check that high pressure hose is connected to
spray gun and pump (see ASSEMBLY section
starting on page 6), and start engine.
Apply detergent to a dry surface, starting from the
bottom and working up to avoid streaking.
Allow the detergent to soak in for 3-5 minutes
before washing and rinsing. Reapply to prevent
surface from drying.
For washing, start at lower portion of area to be
washed and work upward, using long, even,
overlapping strokes.
Figure 10 Insert the small filter into container
of cleaning solution.
Figure 11 Chemical valve handle.
Chemical Valve Handle
Generac 2700PSI High Pressure Washer
GENERAC
The Reliable Ones
11
Pressure Washer Rinsing
WARNING: Be extremely careful if you must
use the pressure washer from a ladder,
scaffolding or any other relatively unstable
location. Pressure in a running washer builds
as you climb. When you press the trigger, the
recoil from the initial spray could force you to
fall. The high pressure spray could also force
you to fall if you are too close to the cleaning
surface.
For Rinsing:
Remove the chemical injector hose from the
chemical bottle to stop detergent from flowing.
Spray until the detergent has cleared from the gun.
Turn the chemical valve handle clockwise fully until
it stops. This puts the gun into high pressure mode.
Keep the spray gun a safe distance from the area
you plan to spray.
Apply a high pressure spray to a small area and
then check the surface for damage. If no damage
is found, you can assume it is okay to continue
cleaning.
Start at top of area to be rinsed, working down with
same overlapping strokes as you used for cleaning.
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 140145°F. When the water
reaches this temperature, the automatic cool down
system engages and cools the pump by discharging
the warm water onto the ground. This system
prevents internal damage to the pump.
Generac 2700PSI High Pressure Washer
GENERAC
The Reliable Ones
12
GENERAL MAINTENANCE
RECOMMENDATIONS
The warranty of the high pressure washer does not
cover items that have been subjected to operator
abuse or negligence. To receive full value from the
warranty, operator must maintain high pressure
washer as instructed in this manual.
Some adjustments will need to be made
periodically to properly maintain your high pressure
washer.
All adjustments in the Service and Adjustments
section of the engine owners 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
gun and wand 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.
BEFORE EACH USE
Check engine oil level.
Check water inlet screen for damage.
Check high pressure hose for leaks.
Check detergent inlet hose and filter for damage.
Check gun and wand assembly for leaks.
PRESSURE WASHER
MAINTENANCE
Check and Clean Inlet Screen
Examine screen on the water inlet. Clean if the
screen is clogged or replace if screen is damaged.
Check High Pressure Hose
The high pressure hose can develop leaks from wear,
kinking, or abuse. Inspect 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 hose immediately.
DANGER! Water spraying from a leak is
capable of injecting material into skin. Inspect
hose each time before using it. Never repair a
high pressure hose. Replace it with another
hose that meets the maximum pressure rating
of your pressure washer.
Check Detergent Hose
Examine the filter on the detergent hose and clean if
clogged. Hose should fit tightly on barbed fitting.
Examine hose for leaks or tears. Replace the filter or
hose if either is damaged.
Check Gun and Wand
Examine hose connection to gun and make sure it is
secure. Test trigger by pressing it and making sure it
springs back into place when you release it. Put safety
latch in on position and test trigger. You should not be
able to press trigger.
Purge Pump of Air and
Contaminants
To remove the air from the pump, follow these
steps:
Set up the pressure washer as described in the
ASSEMBLY section and connect the water supply.
Remove the dual lance from the gun.
Squeeze the trigger on the gun and hold.
To remove any contaminants from the pump,
follow these steps:
Set up the pressure washer as described in the
ASSEMBLY section, and connect the water supply.
Remove the dual lance from the spray gun.
Start the engine according to instructions in
OPERATION section.
Squeeze the trigger on the spray gun and hold.
When the water supply is steady and constant,
engage the safety latch and refasten the dual lance.
Cleaning Chemical Injector Hose
If you have used the chemical injector hose you must
flush it with clean water before stopping the engine.
To clean the chemical injector hose:
Place the small filter end of the chemical injector
hose in a bucket of clean water.
Open the chemical valve handle fully on the lance
by turning it counterclockwise. This puts the gun in
low pressure.
Squeeze the spray gun trigger for 1 - 2 minutes to
flush the chemical injector hose.
Shut off the engine.
Important: Simply shutting OFF engine will not release
pressure in the system. When engine has shut
down, squeeze the trigger on the gun to relieve the
pressure in the hose.
Generac 2700PSI High Pressure Washer
GENERAC
The Reliable Ones
13
Nozzle Maintenance
If the nozzle on the dual lance becomes restricted or
clogged with foreign materials, such as dirt, excessive
pump pressure may develop. If this nozzle becomes
partially clogged, it can cause a pulsing sensation
during use. This generally is not a pump related
problem, but rather a clogged or partially restricted
nozzle.
If the nozzle becomes clogged or partially restricted,
immediately clean the nozzle with the kit included
with your pressure washer by following these
instructions:
Shut off the engine and turn off the water supply.
Press trigger to relieve pressure.
Separate the dual lance from the gun.
Use the wire included in the kit (Figure 12) or a
small paper clip to free the foreign materials
clogging or restricting the nozzle.
Remove additional debris by back flushing water
supply through dual lance (Figure 13). Back flush
between 30 to 60 seconds. Back flush both lances
by turning chemical valve handle.
Reconnect the dual lance to the spray gun.
Reconnect the water supply, turn on the water, and
start the engine.
Test the pressure washer by operating with nozzle
in the high and in the low position.
ENGINE MAINTENANCE
See the Engine Owners Manual for instructions on
how to properly maintain the engine.
SERVICE AND
ADJUSTMENTS
See the engine owners manual for instructions on
how to properly service and adjust the engine
PREPARING THE 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 injector hose by placing the injector
filter into a pail of clean water while running
pressure washer and squeezing the spray gun
trigger with the dual lance in low pressure mode.
Flush for two minutes.
2.Shut off the engine and let it cool, then remove all
hoses.
3.Place Run/Stop Switch in STOP position.
4.Empty the pump of all liquids by pulling recoil
handle about 6 times. This should remove most of
the liquid in the pump.
NOTE: To protect unit from freezing temperatures,
draw R. V. Antifreeze (Antifreeze with out alcohol) into
pump by pouring 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
Using a fuel additive such as STA-BIL®, or
equivalent, will prevent the build up of gum and
varnish in the fuel system. Refer to the engine
owners manual for further information.
Figure 12 Cleaning the nozzle.
Figure 13 Backflushing the nozzle.
Troubleshooting Points
Generac 2700PSI High Pressure Washer
GENERAC
The Reliable Ones
14
Problem
Pump has the following
problems:
Failure to produce adequate
pressure, erratic pressure,
chattering, loss of pressure or
low water volume.
Detergent fails to mix with
spray.
Engine runs well when not
spraying but bogs down
when trigger is squeezed.
Engine will not start; or starts
and runs rough.
Engine shuts down during
operation.
Engine lacks power.
Engine hunts or falters.
Cause
1. Lance in low pressure.
2. Water inlet is blocked.
3. Inadequate water supply.
4. Garden hose is kinked or leaking.
5. Clogged water inlet screen.
6. Water supply is over 140°F.
7. Outlet hose is blocked or leaks.
8. Gun leaks.
9. Nozzle is obstructed.
10. Pump is faulty.
1. Chemical injector hose is not
submerged.
2. Chemical injector hose is clogged.
3. Lance is in high pressure mode.
1. Engine speed is too slow.
1. Low oil level.
2. Dirty air cleaner.
3. Out of gasoline.
4. Stale gasoline.
5. Spark plug wire not connected to
spark plug.
6. Bad spark plug.
7. Water in gasoline.
8. Excessively rich fuel mixture.
9. Intake valve stuck open or closed.
10. Engine has lost compression.
1. Out of gasoline.
2. Low oil level.
1. Dirty air filter.
1. Engine is not operating properly.
Solution
1. Adjust chemical valve handle to
high pressure.
2. Clear inlet.
3. Make sure you have at least a 3.0
gpm flow for your garden hose.
4. Straighten garden hose or patch
leak.
5. Check and clean water inlet
screen.
6. Provide cooler water supply.
7. Clear blocks in outlet hose.
Replace immediately if leaking.
8. Replace gun.
9. Clear nozzle.
10. Contact Generac service facility.
1. Insert chemical line into detergent.
2. Clean or replace filter/chemical
injector hose.
3. Put dual lance into low pressure
mode.
1. Contact Generac service facility.
1. Fill crankcase to proper level.
2. Clean or replace air filter.
3. Fill fuel tank.
4. Drain gas tank; fill with fresh fuel.
5. Connect wire to spark plug.
6. Replace spark plug.
7. Drain as tank fill with fresh fuel.
8. Contact Generac service facility.
9. Contact Generac service facility.
10. Contact Generac service facility.
1. Fill fuel tank.
2. Fill crankcase to proper level.
1. Replace air filter.
1. Contact Generac service facility.
NOTES
Generac 2700PSI High Pressure Washer
GENERAC
The Reliable Ones
15
16
Generac 2700PSI High Pressure Washer
GENERAC
The Reliable Ones
Drawing No. B3837
Exploded View Main Unit
17
Generac 2700PSI High Pressure Washer
GENERAC
The Reliable Ones
Parts List Main Unit
Item Part # Qty Description
1 A1040D 1 HOSE, 4-1/2 Chemical Clear
2 A1041 1 FILTER, Chemical Hose
3 70453 1 TAG, Warning Oil
4 97178 2 KNOB, Handle 1/4" - 20 PW
5 31669 2 BOLT, 1/4" - 20 x 1-3/4"
Carriage
6 B1210A 1 TAG, Start Instructions
7 99583 8 NUT, Flange Lock 5/16"-18
8 B1982 1 BUMPER
9 A8926 1 MANUAL, Engine
10 B2727 1 VALVE, Thermal Relief
11 B1232 1 CLAMP, Hose 7/16 Dia.
12 21786 1 DECAL, Danger
13 91682B 1 DECAL, Recoil
14 45771 4 NUT, M8 - 1.25 Hex
15 22129 8 LOCKWASHER, M8
16 21217 2 MOUNT, Rubber Shock M8
18 97100 1 CAP, H.P. Adapter
19 97098 1 CAP, Garden Hose Inlet
20 B2043 7 BOLT, 5/16"-18 x 1-3/4"
Carriage
21 B3169 1 ASSEMBLY, Pump
22 NSP 1 ENGINE, Generac Power
Systems GN 220 Model EHC
04747-1
23 B1983 1 HANDLE
24 B1631A 1 BILLBOARD, Plastic
25 B1932 1 DECAL, Instructions
26 B1981 2 SUPPORT, Handle
27 B2192 1 DECAL, Generac
28 B1760 2 ASSEMBLY, 10" Tire & Wheel
29 75402 2 PUSHNUT, 1/2" Dia.
30 AB1770 1 BASE
31 52858 2 NUT, M8 1.25 Flange Locking
32 42909 2 HHCS, M8 1.25 x 30
33 50190 2 WASHER, M8 Flat
34 27007 2 MOUNT, Donut Type Vibration
35 20566 1 DECAL, Generac #1-800
36 B2150 1 HOOK , Gun
37 B3761 1 DECAL, Logo
38 36819 4 HHCS, 5/16" - 24 x 1"
Item Part # Qty Description
39 22145 6 FLATWASHER, M8
40 95320 1 CONNECTOR, Garden Hose
41 23139B 1 KEY, 3/16" Square
42 B3635 1 HOSE, High Pressure
43 87815 1 GOGGLES, Safety
44 B2140D 1 LANCE, Dual
45 B3263 1 GUN, High Pressure
46 B2203 1 KIT, Handle Fastening
47 B2508 1 KIT, Cleaning
48 B1460 2 CAP, Vinyl (black)
49 B2168A 1 HANGER, Hose, Gun, Chem
Bottle
50 40976 2 SHCS, M8 1.25 x 20
51 B2431 1 VIDEO
52 89476 1 GASKET, Exhaust
53 83208 1 BRACKET, Muffler
54 66476 2 HHCS, M6 1.0 x 12
55 83071 1 MUFFLER
56 B3062 1 KIT, Maintenance
57 48031C 3 CLAMP, Hose
58 96193 1 VALVE, Fuel Shut Off
59 96001 4 BOLT, M6 - 1.0 x 21 Shoulder
60 96002 4 BUSHING, Tank
61 94994 1 TANK, 1 Gal Fuel
62 95549 1 CAP, Fuel
63 30340C 1 HOSE, Fuel - 1/4" I.D.
64 21545 1 SHIELD, Heat
65 B2516 1 CAP, Vinyl (black)
67 B3836 1 MANUAL
68 88681 1 CARD, Owner Registration
69 48031B 1 CLAMP, Hose 3/8"
70 30809 1 GROMMET, Rubber
71 B3800 2 MOUNT, Rubber Shock, M8
72 B3107A 1 HOSE, Thermal Relief
73 85883 1 STA-BIL
74 BB3061 1 OIL, 28 oz.
75 83831 1 BROCHURE, Sta-Bil
76 81886 1 DECAL, Sta-Bil
77 67989 4 NUT, M8 Flange Locking Hex
M8 - 1.25 Serrated
18
Generac 2700PSI High Pressure Washer
GENERAC
The Reliable Ones
Exploded View Pump
19
Generac 2700PSI High Pressure Washer
GENERAC
The Reliable Ones
REPAIR PARTS PUMP
Item Part # Description Qty
1 100-92293P Crankcase 1
2 101-92293P Plug 1
3 102-92293P O-Ring 1
4 103-92293P Protector 1
5 104-B3169 Oil Seal 3
6 104-92293P Plug 1
8 106-92293P Washer 8
9 107-92293P Screw 8
10 108-B3169 O-Ring 6
11 109-B3169 Valve Seat 6
12 110-B3169 Valve Plate 6
13 111-B3169 Spring 6
14 112-B3169 Valve Cage 6
15 108-92293P O-Ring 6
16 114-B3169 Valve Cap 6
17 115-B3169 Valve Assy. 6
18 116-B3169 Head Ring 3
19 117-B3169 Packing 3
20 118-B3169 Packing Retainer 3
21 119-B3169 O-Ring 3
22 120-B3169 O-Ring 3
23 110-92293P Sight Gauge 1
24 111-92293P Needle Bearing 1
25 94504 Oil Dip Stick 1
26 112-92293P Nut 3
27 113-92293P Washer 3
28 150-92293P Plunger 3
29 114-92293P O-Ring 3
30 115-92293P Back Up Ring 3
31 116-92293P Flinger Washer 3
32 117-92293P Conn. Rod Pin 3
33 118-92293P Crankcase Cover 1
34 126-92293P Screw 4
35 120-92293P Cover O-Ring 1
36 134-B3169 Connecting Rod 3
37 122-92293P Plunger Rod 3
49 136-B3169 Screw 4
50 137-B3169 Washer 4
51 138-B3169 Flange 1
52 126-92293P Screw 4
53 106-92293P Washer 4
54 128-92293P Spacer 1
Item Part # Description Qty
55 129-92293P O-Ring 1
56 130-92293P Oil Seal 1
57 131-92293P Snap Ring 1
58 132-92293P Bearing 1
59 146-B3169 Crankshaft 1
60 134-92293P Knob 1
61 148-B3169 Bolt 1
62 149-B3169 Nut 1
63 137-92293P O-Ring 1
64 138-92293P Pressure Regulator 1
65 152-B3169 Seal 1
66 140-92293P Spring 1
67 154-B3169 Bushing 1
68 108-92293P O-Ring 1
69 156-B3169 Stopper 1
70 157-B3169 Spring 1
71 158-B3169 O-Ring 3
72 159-B3169 Ball 1
73 160-B3169 Back Up Ring 2
74 161-B3169 O-Ring 2
75 162-B3169 Piston 1
76 163-B3169 Back Up Ring 1
77 164-B3169 Valve Guide 1
78 165-B3169 O-Ring 1
79 166-B3169 Back Up Ring 1
80 167-B3169 Valve 1
81 168-B3169 Screw 1
82 169-B3169 Valve Seal 1
83 170-B3169 O-Ring 1
84 141-92293P Nipple 1
86 172-B3169 UI Manifold 1
87 173-B3169 Cap 1
88 104-92293P Cap 1
89 161-B3169 O-Ring 1
90 142-92293P Nozzle 1
91 177-B3169 O-Ring 1
92 178-B3169 Spring 1
93 179-B3169 Ball 1
94 114-92293P O-Ring 1
95 197-B3169 Hosebarb 1
96 112-92293P O-Ring 1
97 199-B3169 Injector Housing 1
Repair Kits
Description Part # Items included # Assys
in kit in Kit
Valve Kit 500-92294P 10, 11, 12, 13, 14, (17) 6
Oil Seal 500-92293P 5 3
ORing 192-B3169 20, 21, 22 3
ORing 506-92294P 83,89,91,92,93,94,95,96
ORing 503-92293P 18, 19, 20, 21, 22 1
ORing 195-B3169 18, 19, 21, 22 3
ORing 505-92293P 67,68,69,70,71,72,73,74,75,76,
77,78,79,80,81,82
Generac 2700PSI High Pressure Washer
GENERAC
The Reliable Ones
LIMITED PRESSURE WASHER WARRANTIES
(INCLUDES MASTER CONTRACTOR)
Generac Portable Products warrants to the original retail purchaser, the pressure washer manufactured by
Generac Portable Products 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, Generac Portable Products will, at its option, repair or replace any part which, upon
examination by Generac Portable Products or Generac Portable Products 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 will 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,
Generac Portable Products 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 Generac Portable Products' NEGLIGENCE. Generac 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 Generac Portable Products authorized warranty service facility or call 1-877-544-
0982. Warranty service can be performed only by a Generac Portable Products 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, LLC
Jefferson, WI
U.S.A.
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