1800PSI
The Reliable Ones
High Pressure Washer
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
This pressure
washer is equipped
with an Automatic
Cool Down System.
See page 11 for
details.
GENERAC
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. 11950 (1800 PSI High Pressure Washer) Manual No. B2808 Revision 1 (6/9/98)
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High Pressure Washer
Generac 1800PSI High Pressure Washer
GENERAC
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.
Locate this pressure washer in areas away from combustible
materials, combustible fumes or dust.
The high pressure equipment is designed to be used with Generac
authorized parts only. If you use this equipment with parts that
do not comply with minimum specifications, the user assumes all
risks and liabilities.
Some chemicals or detergents may be harmful if inhaled or
ingested, causing severe nausea, fainting or poisoning. The harmful elements may cause property damage or severe injury.
Do not 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 condi-
tion 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.
High pressure spray can cause paint chips or other particles to
become airborne and fly at high speeds.
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.
The high pressure stream of water that this equipment produces
can pierce skin and its underlying tissues, leading to serious
injury and possible amputation.
Always wear eye protection when you use this equipment or
when you are in the vicinity where the equipment is in use.
Operate the pressure at no more than the PSI fluid pressure
rated for your pressure washer.
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 cor-
rectly attached.
Never use a spray gun which does not have a trigger lock or trig-
ger 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 mask so you are certain the mask 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 jet spray mode.
Keep the hose connected to machine or the spray gun while the
system is pressurized. Disconnecting the hose while the unit is
pressurized is dangerous.
Hold the spray gun firmly in your hand before you start the unit.
Failure to do so could result in an injury from a whipping spray
gun. Do not leave the spray gun unattended while the machine
is running.
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 muf-
fler or engine or you could be severely burned.
Operate and store this unit on a stable surface.
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 move-
ment 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 pres-
sure washer.
The engine exhaust from this product
contains chemicals known to the State
of California to cause cancer, birth
defects, or other reproductive harm.
WARNING:
High Pressure Washer
Generac 1800PSI High Pressure Washer
GENERAC
3
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 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.
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 . . . . 1800 psi
Flow Rate . . . . . . . . . 2.0 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 . . . . . . Honda GC 135
Rated Horsepower . . 4.0
Displacement . . . . . . 135cc
Spark Plug
Type . . . . . . . . NGK:BPR6ES
Set Gap To: . . 028-.031 inch (.7-.8mm)
Gasoline Capacity . . 1.8 U.S. quarts
Oil . . . . . . . . . . . . . . . SAE 10W30
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: If you equip the engine of your pressure
washer with a spark arrestor muffler, the spark
arrestor must be maintained in effective working order
by the owner/operator.
You can order a spark arrestor through your
authorized Honda service dealer.
Model Number 1195-0
Serial Number
Date of Purchase
The model and serial numbers will be found on
a decal attached to the pressure washer. You
should record both serial number and date of
purchase and keep in a safe place for future
reference.
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High Pressure Washer
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 1800PSI High Pressure Washer
GENERAC
Adjustable Nozzle You must attach this to the spray
gun to provide high pressure stream. Adjustable nozzle
allows you to adjust force of spray and spray pattern.
Air Cleaner Dry type filter element limits the amount
of dirt and dust that gets in the engine.
Automatic Cool Down System Cycles water
through pump when water reaches 140°-145°F. Warm
water will discharge from pump onto ground. This
system prevents internal pump damage.
Chemical Injection TubeUsed to siphon chemical
from the detergent container to the pump.
Choke Rod Prepares a cold engine for starting.
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 wand.
High Pressure Outlet Connection for high pressure
hose.
Oil FillOil input area.
Pump Develops high pressure.
Recoil Starter Used for starting the engine manu-
ally.
Spray Gun Controls the application of water onto
cleaning surface with trigger device. Includes safety
latch.
Throttle LeverSets engine in starting mode for recoil
starter and stops a running engine.
Water Inlet Connection for garden hose.
High Pressure Hose
Adjustable Nozzle
Goggles
Choke Rod
High Pressure Outlet
Pump equipped with
Automatic Cool Down
System
Spray Gun
Water Inlet
Oil Fill
Recoil Starter
Throttle Lever
Air Cleaner
Chemical Injection Tube
High Pressure Washer
5
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 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
High Pressure Hose
Parts Box (which includes the following):
Wireform
Goggles
Nozzle Cleaning Kit
Owners Manual
Engine Manual
Spray Gun
Nozzle Extension
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:
Unfold the handle and attach the wire form that
holds high pressure hose and spray gun.
Connect the high pressure hose to the spray gun
and the pump and connect the water supply to the
pump.
Add oil to the engine crankcase.
Add fuel to the fuel tank.
Secure Handle and Wire Form
Lift the handle upward and allow the locking caps to
slide over the bottom part of the handle to secure it
in place. (Figure 1).
Insert the wire form into the handle with the longer arm
positioned on the left. From this view the hook should
resemble a J
(Figure 2).
Add Engine Oil
IMPORTANT: Any attempt to crank or start the
engine before it has been properly serviced with the
recommended oil may result in an engine failure.
Generac 1800PSI High Pressure Washer
AA
SSSSEEMMBBLL
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GENERAC
Figure 1 — Lift the handle into an upright
position.
Lift the handle
to an upright
position and
slide the
locking caps
into place
Figure 2 — Fit wire form on handle.
Generac 1800PSI High Pressure Washer
AASSSSEEMMBBLLYY
GENERAC
6
High Pressure Washer
Note: When adding oil to the engine crankcase, use
only high quality detergent oil rated with API service
classification SF or SG rated SAE 10W30 weight.
Do Not Use SAE 10W40 Oil.
Place the pressure washer on a level surface.
Clean the area around oil fill and remove the oil dip-
stick (Figure 3).
Wipe the dipstick clean.
Insert and remove the dipstick without screwing it
into the filler neck. Check the oil level shown on the
dipstick.
If the oil level is low, fill to the edge of the oil filler
hole with the recommended oil. DO NOT OVERFILL.
Reinstall the oil dipstick, 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
regular automotive gasoline.
Use clean fuel and store in approved, clean cov-
ered containers. Use clean fill funnels. Never use
stale gasoline left over from last season or gasoline stored for long periods.
Clean the area around the fuel fill cap, remove the
cap (Figure 4).
Add UNLEADED regular gasoline, slowly, to fuel
tank. Use a funnel to prevent spillage.
Install the fuel cap and wipe up any spilled gasoline.
Connect Hose and Water
Supply to Pump
IMPORTANT: You must assemble the wand and
attach all hoses before you start the engine. Starting
engine without all hoses connected and water supplied will damage the pump.
Uncoil the high pressure hose and attach one end
of the hose to the base of the spray gun. (Figure 5).
Tighten by hand.
Attach the other end of the high pressure hose to
the high pressure fitting on the pump (Figure 6).
Tighten by hand.
Figure 3 — Add oil to engine crankcase. Do not
attempt to start engine without
adding oil.
Figure 4 — Add gasoline to fuel tank.
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