Simplicity 00775-1 Operator's Manual | Manualzz
GENERAC
OHVI-75X/3000PSI
High Pressure Washer
Owner’s Manual
Operating and Maintenance Instructions
ES 4;
Model No. 0775-1 and 0800-1 (3000 psi High Pressure Washer) Manual No. B1324 Revision 0 (6/3/97)
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.
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REPAIRS TO YOUR HIGH PRESSURE WASHER.
Engine exhaust gases contain DEADLY carbon monoxide gas. This dan-
gerous 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.
WARNING:
The engine exhaust from this product
contains chemicals known to the State
of California to cause cancer, birth
defects, or other reproductive harm.
A
Gasoline is highly FLAMMABLE and its vapors are EXPLOSIVE. Do not
permit smoking, open flames, sparks or heat in the vicinity while han-
dling 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 lia-
bilities.
Some chemicals or detergents may be harmful if inhaled or ingested, caus-
ing 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.
Hl PREPARATION
* Operate engine only at governed speed. Running the engine at exces-
sive speeds increases the hazard of personal injury. Do not tamper with
parts which may increase or decrease the governed speed. Adjustments
should be made by authorized service personal only.
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. Cor-
rect all defects before operating the Pressure Washer.
M OPERATION
* Do not spray flammable liquids.
* Never aim the gun at people, animais or plants.
* High pressure spray can cause paint chips or other particles to become
airborne and fly at high speeds.
Generac OHVI-75X/3000PSI High Pressure Washer
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
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 stream of fluid that this equipment can produce 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 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 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 resuit 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 adjust unloader valve to a pressure in excess of machine rating.
Do not secure trigger gun in the pull-back (open) position.
Do not by-pass any safety device on this machine.
Do not leave trigger closed for more than 5 minutes with engine running.
This could damage the pump.
The muffler and engine heat up during operation and remain hot imme-
diately after shutting it down. Avoid contact with a hot muffler or engine
or you could be severely burned.
Hl MAINTENANCE AND STORAGE
* Operate and store thig 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 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.
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Generac OHVI-75X/3000PSI High Pressure Washer
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CONGRATULATIONS on your purchase of a GENERAC high
pressure washer. It has been designed, engineered and man-
ufactured 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. Always observe the “SAFETY RULES’
MODEL
NUMBER 0775-1 or 0800-1
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 futurereference.
CUSTOMER RESPONSIBILITIES
* Read and observe the safety rules.
* Read and observe all the instructions in this manual.
* 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
M PRESSURE WASHER SPECIFICATIONS
Outlet Pressure 3000 psi
Flow Rate 2.5 Gallons per minute
Detergent Mix Use undiluted detergent
Pump Oil Pump is permantly
lubricated.
Water Supply |
Temperature Not to exceed 140° F
EM ENGINE SPECIFICATIONS
Engine Model GN-Series
Rated Horsepower 7.8
Displacement 220cc
Spark Plug: Type: Champion RC12YC
or equivalent
Set Gap To: 0.030 inch (0.76mm)
Gasoline Capacity 1 U.S. gallon
Oil (20 oz. capacity) SAE 30 weight
Solid State Ignition Air Gap 0.0125 inch
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 engine of your pressure washer is equipped with
a spark arrestor muffler. The spark arrestor must be maintained
in effective working order by the owner/operator.
High Pressure Washer
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Goggles Wireform Spray Gun Nozzle Extension
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Parts Bag
High Pressure Hose (in manual bag)
PARTS BAG CONTENTS Guide Handle wrapped in plastic
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Nozzle Cleaning Kit
(2) Carriage Bolts - 1/47-20x134 (2) Plastic Handle Knobs (in manual bag)
High Pressure Washer
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KNOW YOUR PRESSURE WASHER
Read this owner’s manual and safety rules before operating your high pressure washer.
Compare the illustrations with your high pressure washer to familiarize yourself with the locations of
various controls and adjustments. Save this manual for future reference.
Water Intake
: Pressure Regulator
Opening
Detergent Guide Handle
Pick-Up
Tube and Filter Wire Support for Gun
and Hose Storage
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Gasoline Cap Gun and Wand
Yellow Engine / Assembly
Oil Fill Cap :
High Pressure N High Pressure Hose
Outlet Adj. Knob
Recoil Starter
Air Cleaner
Pump Muffler oil Drain Plug | Engine RUN/STOP
PUMP — Develops high pressure. DETERGENT PICK-UP TUBE AND FILTER — Mixes water and
detergent into outlet water flow.
ENGINE RUN/STOP SWITCH — Sets engine in starting mode
for recoil starter; turns OFF running engine. HIGH PRESSURE OUTLET — Connection for high pressure
hose.
RECOIL STARTER — Used for starting the engine manually. WATER INLET — Connection for garden hose.
AIR CLEANER — Dry type filter element límits the amount of HIGH PRESSURE HOSE — Transfers water under high pres-
dirt and dust that gets in the engine. sure to gun assembly.
SPRAY GUN ASSEMBLY — Controls the application of water PRESSURE REGULATOR — Allows you to adjust the pressure
onto cleaning surface with trigger device. Includes safety latch. of the outlet stream.
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Generac OHVI-75X/3000PSI High Pressure Washer
. Read entire Owner's manual before you attempt to assem-
ble 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 pur-
poses. After first use you may wish to use the step by
stepillustrations for quick set up.
REMOVE PRESSURE WASHER
FROM CARTON
* Remove accessory and 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.
Refer to Page 4, “Contents of Hardware Pack” for an illustrated
listing of all items included with your pressure washer. Become
familiar with each piece before assembling pressure washer.
Check all contents against illustrations on Page 4. If any
parts are missing or damaged, call the Pressure Washer
Helpline at 1-800-270-1408.
TOOLS NEEDED
You will need (2) large adjustable wrenches or pliers.
PREPARING THE PRESSURE
WASHER FOR USE
If you have any problems with the assembly of your pres-
sure 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 guide handle and attach the wire form that holds
high pressure hose and spray gun (if required).
Connect high pressure hose to the spray gun and the pump
and connect water supply to the pump.
Before starting your pressure washer you need to:
* Add oil to engine crankcase.
* Add fuel to fuel tank. -
Ш ATTACH THE GUIDE HANDLE
IMPORTANT: In some units the wire form is already installed
on the the guide handle. If this is so, make sure that the small
hook on the wire form is on the side opposite the muffler.
* Place the guide handle into the slots on the legs already
connected to the main unit. Hold one side of the handle as
shown in Step 1 and apply inward pressure with your thumb.
This should allow you enough room to slide the handle into
the slots and align the holes.
* Insert the carriage bolts through the holes as shown in
illustration for Step 1 and attach the plastic knobs. Tighten
the knobs by hand.
Step 1 — Attach the guide handle.
INSERT CARRIAGE
BOLTS
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IMPORTANT: If the wire form is already installed on
the guide handle, make sure the small hook on the
wire form is on the side opposite the muffler.
ALIGN HOLES
`
+ Fit wire form on guide handle making sure the small hook
(that the detergent bottle hangs from) is on the side oppo-
site the muffler. This is to make sure that the detergent
pick-up tube does not touch the muffler.
Step 2 — Fit wire form on guide handle.
IMPORTANT: Make sure the small hook on the
wire form is on the side opposite the muffler.
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Generac OHVI-75X/3000PS! High Pressure Washer
Ш CONNECT HOSE AND WATER SUPPLY
TO PUMP
IMPORTANT: You must assemble wand and attach all hoses
before you start engine. Starting engine without all hoses con-
nected and water supplied will damage pump.
Note: One end of the high pressure hose is covered with teflon
tape. If tape is not properly applied, reapply it so threads are
fully covered. The tape seals the connection from hose to spray
gun.
* Unravel high pressure hose.
» Attach gun to end of high pressure hose covered with teflon
tape. Use two adjustable wrenches to tighten the fitting.
Step 3 — Connect high pressure hose
to spray gun.
Use a pair of pliers or adjustable
wrences to tighten the fitting.
* Remove plastic cap from the high pressure outlet. Connect
the hose to the outlet by hand (Step 4).
Step 4 — Connect high pressure hose to pump.
* Inspect Inlet Screen on water inlet. Clean it if it contains
debris or have it replaced if damaged. Do not run the pres-
sure washer if the screen is damaged.
Step 5 — Connect garden hose tightly to
water inlet and turn ON the water.
* Squeeze trigger until a steady stream of water appears to
purge pump of air and impurities .
Step 6 — Squeeze trigger to purge pump
system of air and impurities.
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CAUTION: Before starting the pressure washer, be
A sure you are wearing adequate eye protection.
Goggles are included with this unit.
High Pressure Washer
BEFORE STARTING THE ENGINE
Before you operate your pressure washer, you should prepare
the engine for the initial starting. Consult the engine owner's
manual for details about preparing the engine. To operate the
engine you will need the following:
H ENGINE Ol L (For Pump Oil, see specifications on Page 3)
Pump Oil: The pump is permanently lubricated and requires
no additional lubrication.
IMPORTANT: Any attempt to crank or start the engine before
it has been properly serviced with the recommended oil results
in an engine failure.
Note: When adding oil to the engine crankcase in the future,
use only high quality detergent oil rated with API service clas-
sification SF,.SG or SH, rated SAE 30 weight. Select the oil's
viscosity grade according to your expected operating tem-
perature.
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. Oil sump capacity is 20 ounces.
* Place pressure washer on a level surface.
* Clean area around oil fill and remove oil fillcap (Step 8).
Step 8 — Add oil to engine crankcase. Do not
attempt to start engine without adding oil.
+ Wipe dipstick clean.
* Pour oil into the oil fill opening until oil just overflows slightly.
DO NOT OVERFILL.
* Install oil cap and hand tighten securely.
EH ADD GASOLINE
A WARNING: NEVER fill fuel tank indoors. NEVER
fill fuel tank when engine is running or hot. DO
NOT smoke when filling fuel tank.
Generac OHVI-75X/3000PS} High Pressure Washer
WARNING: NEVER fill fuel tank completely full. Fill
tank to about 1/2" below the bottom of filler neck to
provide space for fuel expansion. Wipe away any
fuel spillage from engine and equipment before
starting.
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The manufacturer recommends fresh, clean unleaded regu-
lar automotive gasoline with a minimum of 77 octane (Leaded
regular grade is an acceptable substitute).
* Use clean fuel and store in approved, clean covered con-
tainers. Use clean fill funnels. Never use “stale” gasoline left
over from last season or gasoline stored for long periods.
* Clean area around fuel fill cap, remove cap (Step 9).
Step 9 — Add Gasoline to fuel tank.
* Add “UNLEADED” regular gasoline, slowly, to fuel tank.
* Install fuel cap and wipe up any spilled gasoline.
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 proper hose connections (high pressure and
water supply) and for tight connections and that there are
no kinks, cuts, or damage to the high pressure hose.
Check that oil has been added to proper level in engine
crankcase before trying to start the pressure washer.
* Add proper gasolirre 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.
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Generac OHVI-75X/3000PS| High Pressure Washer
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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.
You have assembled your high pressure washer and have pre-
pared the engine for starting. You are now ready to clean your
car, boat or the outside of a building or whatever you plan to
clean.
Ш 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.
+ Place the pressure washer in an area close enough to an
outside water source that can flow at a rate of 2.5 gallons
per minute. Connect a garden hose to the water spout.
+ Check that the high pressure hose is tightly connected to
the spray gun and to the pump. See ASSEMBLY section on
page 7 for illustrations.
* Connect the garden hose to water inlet opening on the
pressure washer pump and turn ON the water.
* Squeeze trigger until a steady stream of water appears.
Step 10 — Turn the fuel valve to the “ON”
position.
Step 11 — Place engine RUN/STOP switch to the
“RUN” position.
* For a cold engine, press the primer bulb 3 times (Wait two
seconds between primes). For a warm engine, do not prime.
Step 12 — For a cold engine press the
primer bulb 3 times.
* Squeeze the trigger on the spray gun to relieve the air pres-
sure caused by turning ON the water. Water will spew out
the gun in a thin stream. This will make it easier to pull start
the engine.
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Note: A small amount of water will squirt out when you
release the pressure.
E HOW TO USE ADJUSTABLE NOZZLE AND
CONTROL PRESSURE
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 the spray pattern and apply detergent or any other
cleaning chemicals.
IMPORTANT: Do not run pump without the water supply
connected and turned on. You must follow this caution or the
pump will be damaged.
WARNING: NEVER adjust spray pattern when
spraying. NEVER put hands in front of spray
nozzle to adjust spray pattern. You could be
Step 13 — Squeeze trigger to relieve water
pressure and engage safety latch to ON.
* Grasp rope handle and pull slowly until you feel some resis-
tance. Then pull cord rapidly to overcome compression,
prevent kickback and start the engine. A
* Allow engine to warm up for 2 minutes before using unit. seriously injured.
* Place Safety Latch in "OFF" position. On the end of your spray gun is a nozzle that you can slide
E HOW TO STOP YOUR PRESSURE forward and backward and that you can also twist from side
WASHER to side. With the adjustable nozzle you can adjust the spray
— - — pattern to be either high pressure or low pressure. You can
* Place engine RUN/STOP switch in the “STOP” position. also adjust the spray so it is concentrated in a stream pattern
* Turn fuel valve to the “OFF” position. or expanded into a fan pattern.
* Simply shutting OFF the engine will not release pressure
in the system. Squeeze trigger on the spray gun to relieve
pressure in the hose.
e Slide the nozzle forward when you wish to adjust the spray
to low pressure mode (Fig. 14). Slide the nozzle backward
to achieve high pressure.
Figure 14 — Using the adjustable nozzle.
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Nozzle in High Slide Nozzle forward for low Twist nozzle for fan Twist Nozzle for
Pressure Mode pressure mode and detergent spray pattern narrow spray
application pattern
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* Located on the front of the pump is the pressure control knob.
You can increase the pressure by turning the knob clock-
wise or decrease the pressure by turning the knob
counterclockwise (Fig. 15).
Figure 15 — Using the pressure regulator.
* Point the nozzle toward the ground and press the trigger to
test the pattern (Fig. 16).
* Twisting the nozzle adjusts the spray pattern from a narrow
pattern to a fan pattern.
* 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 mode, you may damage the cleaning surface.
* Do not get closer than 6 inches when cleaning automobile
tires. |
EM APPLYING DETERGENT WITH
ADJUSTABLE NOZZLE
IMPORTANT: Use soaps designed specifically for pressure
washers. Household detergents could damage the pump.
IMPORTANT: You must attach all hoses before you start the
engine. Starting the engine without all the hoses connected
and without the water turned ON will damage the pump.
To apply detergent follow these steps:
* Slide the adjustable nozzle forward to low pressure mode.
Detergent cannot be applied with nozzle in high pressure
position. Review the use of adjustable nozzles in Figure 14
on Page 10.
* Prepare the detergent solution as required by the job.
* Hang the detergent solution on the hook on the wire form
on the guide handle.
* Place small filter of the clear, detergent siphoning tube into
the detergent container (Fig. 17).
Figure 17 — Insert detergent filter into
container of cleaning solution.
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), and start engine.
> Apply detergent to a dry surface, starting from the bottom
and working up.
* Allow the detergent to soak in between 3-5 minutes before
washing and rinsing.
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Note: To Adjust the concentration of the mixture of cleaning
solution and water turn the knob where the clear plastic tube
connects to the pump.
Figure 18 — Adjusting chemical concentration.
* For cleaning, start at lower portion of area to be washed and
work upward, using long, even overlapping strokes.
A
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.
M PRESSURE WASHER RINSING
A WARNING: Be extremely careful if you must
use pressure washer from ladder, scaffolding
or any other relatively unstable location. Pres-
sure in a running washer builds in the wand as
you climb. When you press the trigger, the
recoil from the initial spray could force you to
fall, or if you are too close to the cleaning sur-
face, high pressure could force you off the
climbing apparatus.
* |nitially clean an area and then check the surface for damage.
If no damage is found, you can assume it is okay to con-
tinue cleaning.
* For rinsing, slide nozzle sleeve to high pressure and wait
for detergent to clear. Start at top of area to be rinsed,
working down with same action as for cleaning.
* You can also stop detergent from flowing by simply remov-
ing siphon from bottle.
Ш PRESSURE WASHER ACCESSORIES
For accessories such as a 50 foot hose extension, utility brush
kit, under body lance, turbo nozzle and cleaning agents, con-
tact your nearest Generac retail outlet.
GENERAL MAINTENANCE
RECOMMENDATIONS
The warranty of the high pressure washer does not cover
items that have been subjected to operator abuse or negli-
gence. 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
this manual should be made at least once each season.
* Once a year you should clean or replace the spark plug and
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 will help your engine run
better and last longer.
EH BEFORE EACH USE
Check engine oil level.
* Check quick-connect screen for damage.
* Check high pressure hose for leaks.
* Check detergent inlet hose and filter for damage.
* Check gun and wand assembly for leaks.
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PRESSURE WASHER MAINTENANCE
H CHECK AND CLEAN INLET SCREEN
Remove quick-connect and examine inlet screen on the female
connector. Clean if it is clogged or replace if it is torn.
№ CHECK HIGH PRESSURE HOSE
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, or damage or movement
of couplings. If any of these conditions exist, replace hose
immediately.
A
DANGER: Water spraying from a leak is capable of
injecting material into skin. Inspect hose each time
before using it. NEVER repair the high pressure hose.
Replace it with another hose that meets minimum
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.
EM 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 ASSEM-
BLY section and connect the water supply.
* Remove the wand extension from the gun.
* Pull the trigger on the gun and hold.
To remove the contaminants from the pump, follow these
steps:
Set up the pressure washer as described in the ASSEM-
BLY section, and connect the water supply.
* Remove the nozzle attachment from the gun.
* Start the engine according to instructions in OPERATION
section.
* Squeeze the trigger on the gun and hold.
* When the water supply is steady and constant, engage the
safety latch and refasten the nozzle attachment.
ENGINE MAINTENANCE
See Engine Owners Manual for information on how to prop-
erly maintain the engine. It describes how to check the oil level,
as well as change the oil, how to service the air cleaner,
replace the spark plug and clean the spark arrestor screen.
SERVICE AND ADJUSTMENTS
EH CLEANING CHEMICAL INJECTOR HOSE
If you have used chemical injector hose you must flush it with
clean water before stopping the engine.
1. Place the injector filter into a pail of clean water while run-
ning pressure washer with nozzle in low pressure mode.
Flush for five minutes.
2. Shut off the engine.
3. 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.
Ш NOZZLE MAINTENANCE
If the adjustable nozzle becomes restricted or clogged with for-
eign 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
adjustable nozzle.
NOTE: You cannot service the turbo nozzle.
If the adjustable 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.
Separate the adjustable nozzle holder from the gun.
Remove nozzle from the end of the holder using a 2mm or
5/64 allen wrench (like the one included in the kit).
* Use the wire included in the kit (Fig.19 on page 14) or a small
paper clip to free the foreign materials clogging or restrict-
ing the nozzle.
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* Remove additional debris by back flushing water supply
through adjustable nozzle holder (Fig. 20). Back flush
between 30 to 60 seconds. Turn wand to stream spray and
move nozzle from low to high while flushing.
Figure 20 — Backflushing the nozzle.
Reinstall nozzle into the wand. DO NOT overtighten.
* Reconnect the wand to the gun.
* Reconnect the water supply, turn on the water, and start the
engine. |
* Testthe pressure washer by operating with nozzle in the high
and in the low position.
O: MAINTENANCE] Generac OHVI-75X/3000PS| High Pressure Washer
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 detergent hose by placing the injector filter into a pail
of clean water while running pressure washer with nozzle
In low pressure mode. Flush for five minutes.
2. Shut off the engine and let it cool, then remove all hoses.
3. Place throttle lever in STOP position.
A
CAUTION: Be sure lever is in “STOP” position
before you continue. If you start engine without
proper water supply connected, you can damage
pump.
4. Empty the pump of all pumped liquids by pulling recoil
handle about 6 times. This should remove most of the liquid
in the pump.
NOTE: To protect unit from freezing temperatures, draw wind-
shield washer fluid into pump by pouring windshield washer
fluid into a 3-foot section of garden hose connected to inlet
adaptor and pulling recoil handle twice.
5. Store in a clean, dry area.
EM PREPARING THE ENGINE FOR
STORAGE
indoors or in enclosed, poorly ventilated areas
where fumes may reach an open flame, spark or
pilot light as on a furnace, water heater, clothes
dryer or other gas appliance.
A WARNING: NEVER store engine with fuel in tank
Consult the engine owner's manual for information on how to
properly prepare the engine for storage.
-
High Pressure Washer
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Generac OHVI-75X/3000PS! High Pressure Washer
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High Pressure Washer
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O. ETE Generac OHVI-75X/3000PS! High Pressure Washer
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TROUBLESHOOTING POINTS
PROBLEM
Pump has following problems:
failure to produce pressure, erratic
pressure, chattering, loss of pressure,
low water volume.
Detergent fails to mix with spray.
gent.
Engine runs good at no-load but ©bogs
when load is added.
CAUSE
1.Nozzle in low pressure mode.
2. Low regulator pressure
3. Water inlet is blocked.
4. Inadequate water supply
5. Inlet hose is kinked or leaking
6. Clogged inlet hose strainer.
7. Detergent line is not submerged.
8. Water supply is over 140°F.
9. Outlet hose is blocked or leaks.
10. Gun leaks.
11. Nozzle is obstructed.
12. Pump is faulty.
1. Detergent line is not submerged.
2. Chemical filter is clogged.
3. Nozzle is in high pressure mode.
4. Chemical adjuster is closed.
Engine speed is too slow.
High Pressure Washer
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16
CORRECTION
1. Pull nozzle backward for high
pressure mode.
. Adjust regulator to desired setting.
. Clear inlet
. Provide adequate water flow.
. Straighten inlet hose, patch leak.
©) © + © N
. Check and clean inlet hose
strainer.
7. Submerge detergent line.
8. Provide cooler water supply.
9. Clear blocks in outlet hose.
10. Replace gun.
11. Clear nozzle.
12. Contact Generac service facility.
1. Insert chemical line into deter-
2. Clean or replace filter/detergent
line.
3. Push nozzle forward for
low pressure mode.
4. Open chemical adjuster.
Contact Generac service facility.
Generac OHVI-75X/3000PSI High Pressure Washer
TROUBLESHOOTING POINTS
PROBLEM
Engine will not start; or starts
and runs rough
Engine shuts down during operation
Engine lacks power.
Engine “hunts” or falters.
CAUSE
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. Overchoking.
9. Excessively rich fuel mixture.
10. Intake valve stuck open or closed.
11. Engine has lost compression.
1. Out of gasoline.
2. Low oil level.
Dirty air filter.
Choke is opened too soon.
until engine runs smoothly.
High Pressure Washer
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17
CORRECTION
. Fill crankcase to proper level.
. Clean or replace air cleaner.
. Fill fuel tank.
. Drain gas tank; fill with fresh fuel.
сл BAW PN —
. Connect wire to spark plug.
O
. Replace spark plug.
7. Drain gas tank; fill with fresh fuel.
8. Open choke fully and crank
engine.
9. Contact Generac service facility.
10. Contact Generac service facility.
11. Contact Generac service facility.
1. Fill fuel tank.
2. Fill crankcase to proper level.
Replace air filter.
Move choke to halfway position
©; Generac OHVI-75X/3000PS| High Pressure Washer
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Drawing No. B1330
EXPLODED VIEW — PRESSURE WASHER
|
PUMP SUPPORT BRACKET
14
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| 15
«SIDE VIEW OF ENGINE | Tg м
MODEL DATA DECAL 16
| CROTATE 90* CLOCKWI SE) 7 4
Ca \ | PS | <
ENGINE DATA
High Pressure Washer
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A Drawing No. B1330
REPAIR PARTS — PRESSURE WASHER
ITEM PART N |
| 97054 TAG, PRESSURE ADJUST UANTITY
2 38750 HEX HEAD CAP SCREW M6-1.0 X 30 2
3 21216 MOUNT, RUBBER SHOCK 2
A А170! BRACKET, PUMP SUPPORT |
5 52857 NUT, LOCKING M6-1.0 2
6 22129 LOCK WASHER 5/16-M8 8
7 4577 NUT, HEX M8-1.25 8
8 97100 CAP, H.P. ADAPTER |
9 97098 CAP, GARDEN HOSE INLET |
10 99755 OIL, BREATHER/FILL (LOCTITED) |
| 21217 MOUNT, RUBBER SHOCK 2
12 ENG21260 ENGINE, 220HT GN |
13 91682В DECAL RECOIL |
IL, А1040В CHEMICAL HOSE |
|5 А1041 FILTER. CHEM, HOSE |
16 21786 DECAL, DANGER |
17 70453 TAG, WARNING OIL |
18 BI210 TAG, ENGINE STARTING |
19 74031 LIQUID NEOPRENE .001 QT.
21 В1288 TAG, PUMP BREATHER CAP |
22 В1252 CHEM. HOSE CLIP |
25 92528 CAP, VINYL 2
21, 21299 WIRE FORM, HANDLE |
25 21298 HANDLE |
26 97178 KNOB, 1/4-20 2
27 Al608B DECAL, E.P.A. |
28 21521 DECAL. IMPORTANT |
29 20566 DECAL, GENERAC 1-800# |
30 BI078 BASE, ASSY. |
3) 4,9808 WASHER, FLAT MI2 2
32 88521 WHEEL, ASSY. 2
33 75402 PUSH NUT .50 DIA. 2
31, 96415 DECAL, CAUTION INSTRUCTION |
35 52858 NUT, LOCKING M8-1.25 2
36 87841 MOUNT, DOGNUT TYPE 2
37 30253 HEX HEAD CAP SCREW M8-1.25 X 20 2
38 SEE CHART DECAL, LOGO |
39 BI336B HEAD ÄSSEMBLY |
10 997506 ASSY. FINAL, PUMP |
Ll 31669 CARRIAGE BOLT 1/4-20 X | 3/4" 2
12 87815 SAFETY GOGGLES |
43 BI344 GUN ASSEMBLY |
LL 98539F WAND ASSEMBLY 1.05 YELLOW |
45 91630 HOSE, 3/8" X 25' |
46 55905 TEFFLON TAPE | 5 FT
47 97009 NOZZLE CLEANING KIT |
48 97566 TAG, NOZZLE INSTRUCTIONS |
49 21761 NOZZLE, 1.05 YELLOW (REPLACEMENT ONLY) 0
High Pressure Washer
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19
O. Generac OHVI-75X/3000PSI High Pressure Washer
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© Drawing No. B1326
| EXPLODED VIEW — PUMP
PUMP FINAL ASSEMBLY 99730G
PUMP HEAD ASSEMBLY B1336B <
26 7
E3 24 3 WATER OUT 1
High Pressure Washer
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© Drawing No. B1326
REPAIR PARTS — PUMP
ITEM PART NO. DESCRIPTION
93871 GASKET, ENGINE ADAPTOR
964307 ADAPTOR, ENGINE
96542 BEARING, ROLLER THRUST
97215 POPPET, CHECK VALVE
95165 ADAPT., ENG. SHAFT
21277V AXIAL CAM
95441 SLEEVE, ENG, ADAPTOR
8 93790 “0” RING
10 99427 PISTON
11 96400 SPRING, PISTON RETURN
12 192479 LOCKWASHER, M8-RIBBED
13 93873 LOCKWASHER, M6-RIBBED
14 40945 M6 x 1 x 20 LONG SHCS.
15 97568Y CRANKCASE, ALUMINUM
16 93680 SEAL, OIL-PISTON
17 93668 SPACER, PILOT
18 93667 SEAL, LO-PRES "U” PAK
19 96015 RING, BEARING SEAL
20 99735 CAP BREATHER
21 97027 TOWER, HIGH PRESS. PORT
22 96053 SEAL, HIGH PRESS.-BLACK
23 95504 RING, BACK-UP
24 95503 “O” RING
25 97128 KIT, CHECK VALVE
©
=
ITEM PART NO. DESCRIPTION QTY.
26 97028 SUPPORT,CHECK VALVE,PLASTIC 6
27 23707 BOLT, 5/16-24 x 1” SHC 4
28 93652 SPRING, THERMAL BY-PASS 1
23 95416 PISTON, BY-PASS 1
30 971227 PLATE, SPACER 1
31 89137 GUIDE, CHECK VALVE PLASTIC 6
32 46580 M6-1 x 45 SHCS 3
33 93645 GASKET, HEAD 1
34 23644 ACTUATOR, THERMAL BY-PASS 1
35 95320 CONNECTOR, GARDEN HOSE 1
0 36 95138 HEAD, CYLINDER 1
37 93887 NUT, JAM. 1
38 B1339 HANDLE (Replacement Part Oniy) 0
6
1
1
3
3
6
3
1
1
1
u DN UT WN —>
39 93874 SHCS, M8-1.25 x 75
40 94738 WASHER, BELLEVILLE
41 96137 Plug, Pipe 1/8 NPT
42 96069 "0" RING
43 95506 RING, BACK-UP
44 89138 SPRING, CHECK VALVE
45 94944 SHOE, PISTON PIVOT
47 93876 “O"-RING
48 21746 ASSEMBLY, UNLOADER
49 97606 BEARING ASSEMBLY
TT NN TNA LOW WW = DW =a (А) (А) ==> ==> dr dao
High Pressure Washer
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21
. Generac OHVI-75X/3000PSI High Pressure Washer
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LIMITED PRESSURE WASHER WARRANTIES (includes “Industrial”)
GENERAC warrants to the original retail purchaser, the pressure washer manufactured by GENERAC to be free from defects in mate-
rial 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 operations)
CONSUMER* COMMERCIAL*
Generac GN-Series Engine-driven Engine: 2 years 1 year
Power Washer (2nd year parts only)
Pump: 1 year 90 days
All Other Engine-driven Engine: Warranted solely by Warranted solely by
Power Washers 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 shali thereafter be considered a commercial use pressure washer for
the purposes of this warranty.
During said warranty period, GENERAC will, at its option, repair or replace any part which, upon examination by GENERAC or GEN-
ERAC 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, the GN-Series engines 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 an engine.
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, beits, 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 servic-
ing. 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 MAKES NO
OTHER WARRANTIES AS TO MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. The duration of any implied war-
ranties 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's NEGLIGENCE. 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 war-
ranty gives you specific legal rights and you may also have other rights, which vary from state to state.
For service, see your nearest GENERAC authorized warranty service facility or call 1-800-333-1322. Warranty service can be per-
formed only by a GENERAC authorized service facility. This warranty will not apply to service at any other facility. Atthe time of requesting
warranty service, evidence of original purchase date must be presented.
GENERAC CORPORATION P.O. Box 8 Waukesha, WI 53187
TELEPHONE: (414) 544-4811 FAX: (414) 544-4851
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