Generac Power Systems 1293-1 User manual

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. ead and follow
all instructions in the manual before attempting to operate this unit.
Model No. 12931 (2700 PSI High Pressure Washer) Manual No. B3836 evision 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, ad usting 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 in ury. Do not tamper with
parts which may increase or decrease the
governed speed.
 Do not wear loose clothing, ewelry 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 in ury.
 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.
WWAANNIINNGG::
Important!  Safety ules  Important!

Generac 2700PSI High Pressure Washer
GENERAC
The Reliable Ones
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 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 in ury 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 in ecting 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 ules  Important!

Generac 2700PSI High Pressure Washer
GENERAC
The Reliable Ones
4
CONG ATULATIONS 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 1-
800 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.
CUSTOME
ESPONSIBILITIES
 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.
P ODUCT
SPECIFICATIONS
Pressure Washer Specifications
Outlet Pressure . . . . 2700 psi
Flow ate . . . . . . . . . 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 040471
ated 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
Owners Manual for part number.
Model Number 12931
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 YOU P ESSU E WASHE
ead 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 locations of various
controls and ad ustments. 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 owners 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.
EMOVE P ESSU E
WASHE F OM CA TON
 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.
CA TON CONTENTS
Items in the carton include:
 Main Unit
 Manual Bag
 Owners Manual
 Engine Owners Manual
 Nozzle Cleaning Kit
 ORing Maintenance Kit
 StaBil® Brochure
 STABIL®
 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 18002701408.
P EPA ING THE
P ESSU E WASHE
FO 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
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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
WA NING! 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 oils 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 Breakin.
Add Gasoline
DANGE ! Never fill fuel tank indoors. Never
fill fuel tank when engine is running or hot. Do
not smoke when filling fuel tank.
WA NING! 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
WA NING! 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.
WA NING! 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 BEFO E
STA TING 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 YOU
P ESSU E WASHE
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.
WA NING! 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  un.
 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 STA T your pressure
washer and how to STOP it. The information in this
section will tell you how to ad ust pressure and apply
chemicals using the spray gun and dual lance.
DANGE ! 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
IMPO TANT: 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 in ecting tube
into the detergent container (Figure 10).
CAUTION: Keep the plastic in ector 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).
IMPO TANT: 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