1300PSI
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
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. 7770 (1300 PSI High Pressure Washer) Manual No. B2351 Revision 0 (12/16/97)
CAUTION! Read all instructions
before using this product to reduce
the risk of injury.
DANGER! Risk of electrocution!
Inspect cord before every use. Do not use if cord is
damaged.
Keep all connections dry and off the ground.
Do not touch plug with wet hands.
Double-insulated When servicing, use only iden-
tical replacement parts.
This product shall only be connected to a power
supply receptacle protected by a Ground Fault Cir-
cuit Interrupter (GFCI).
Read instruction manual before using.
WARNING! To reduce the risk of
injury, close supervision is necessary when product is used near
children.
Know how to stop the product and bleed the pres-
sure quickly. Be thoroughly familiar with controls.
Stay alert. Watch what you are doing.
Do not operate the product when fatigued or under
the influence of alcohol or drugs.
Keep operating area clear of all persons.
WARNING! Risk of injury or injection
to persons Do not discharge
stream at persons or animals.
High pressure hose can develop leaks from wear,
kinking, abuse, etc. Water spraying from a leak is
capable of injecting material into skin. Do not point
the pressure washer spray at people or animals.
Do not overreach or stand on unstable support.
Keep good footing and balance at all times.
Follow the maintenance instructions specified in the
manual.
This product shall only be connected to a power
supply receptacle protected by a Ground Fault Circuit Interrupter (GFCI). This is done to comply with
National Electrical Code (NFPA 70) and to provide
additional protection from risk of electrical shock.
Save these instructions.
Operate this pressure washer only in areas away
from combustible materials, combustible fumes or
dust.
Some chemicals or detergents may be harmful if
inhaled or ingested, causing severe nausea, faint-
ing or poisoning. The harmful elements may cause
property damage or severe injury.
Do not allow CHILDREN to operate the Pressure
Washer at any time.
Before starting the Pressure Washer in cold
weather, check all parts of the equipment and be
sure ice has not formed.
Units with broken or missing parts, or without pro-
tective housing or covers should NEVER be
operated.
DANGER! Risk of Explosion Do
not spray flammable liquids.
Never aim the gun at people, animals or plants.
For household use. For indoor or outdoor use.
High pressure stream of fluid that this equipment
can produce may pierce skin and its underlying tis-
sues, leading to serious injury and possible
amputation.
High pressure spray can cause paint chips or other
particles to become airborne and fly at high speeds.
Always wear eye protection when you use this
equipment or when you are in vicinity where the
equipment is in use.
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High Pressure Washer
GENERAC
Generac 1300PSI Electric High Pressure Washer
Save these instructions
IMPORTANT! SAFETY INSTRUCTIONS IMPORTANT!
3
High Pressure Washer
GENERAC
Generac 1300PSI Electric High Pressure Washer
Never move the machine by pulling on high pres-
sure hose. Use the handle provided on the top of
the unit.
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 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 high pressure 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. Do not leave the pressure washer
unattended while the machine is turned on.
Cleaning area should have adequate slopes and
drainage to reduce possibility of a fall due to slippery surfaces.
Keep water spray away from electric wiring or fatal
electric shock may result.
Do not by-pass any safety device on this machine.
Operate and store this unit on a stable surface.
Inspect hose each time before using it. Check all
hoses for cuts, leaks, abrasions, bulging of cover,
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.
Store in a clean, dry area. Ideally, the unit should be
stored in a frost-free room.
Servicing of a Double Insulated Product.
In a double-insulated product, two systems of insulation are provided instead of grounding. No means of
grounding is provided on a double-insulated product,
nor should a means for grounding be added.
Servicing a double-insulated product requires extreme
care and knowledge of the system and should be
done only by qualified service personnel. Replacement parts for a double-insulated product must be
identical to the parts they replace. Use only genuine
replacement parts. A double-insulated product is
marked with the words DOUBLE INSULATION or
DOUBLE INSULATED.
The symbol may also be marked on the product.
Extension Cords
Use only extension cords that are approved for outside use. These extension cords are identified by a
marking ACCEPTABLE FOR USE WITH OUTDOOR
APPLIANCES; STORE INDOORS WHILE NOT IN
USE. Use only extension cords having an electrical
rating greater than the rating of the product. Do not
use damaged extension cords. Examine extension
cord before using and replace if damaged. Do not
abuse extension cord and do not yank on any cord to
disconnect it. Keep cord away from heat and sharp
edges. Always disconnect the extension cord from the
receptacle before disconnecting the pressure washer
from the extension cord.
Save these instructions
IMPORTANT! SAFETY INSTRUCTIONS IMPORTANT!
4
High Pressure Washer
CONGRATULATIONS on your purchase of a GENERAC electric 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
18002701408 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.
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 Maintenance and
Storage sections of this Owner's Manual.
PRODUCT SPECIFICATIONS
Pressure Washer Specifications
Pressure 1300 pounds per square inch
(PSI)
Flow Rate 1.5 gallons per minute (GPM)
Detergent Mix Use Undiluted Detergent
Water Supply Inlet water not to exceed
Temperature 104°F
Motor Brush Type (Universal)
Rated Voltage 120 Volts
Current 14 Amperes
Read these instructions and Operators Manual in its
entirety before you attempt to assemble or operate
your new high pressure washer. Your high pressure
washer has, for the most part, been assembled at the
factory. Before you can operate your new high pressure washer, you must properly connect the high
pressure hose and the water supply.
If you have any problems with the assembly of your
pressure washer, please call the pressure washer
helpline at 1-800-270-1408.
GENERAC
Generac 1300PSI Electric High Pressure Washer
Model
Number 07770
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
GENERAC
Generac 1300PSI High Pressure Washer
5
High Pressure Washer
Spray Gun Controls the application of water onto
cleaning surface with trigger device. Includes safety
latch.
High Pressure Outlet Connection for high pressure hose.
Master On/Off Switch This switch ONLY enables
the Grip Start system to function.
Grip Start System Pressing and releasing the
spray gun trigger starts and stops the electric motor in
the pressure washer.
Safety Flow System Electric motor will not start
unless water is supplied to the pump.
Foamer Used to apply detergent. Mixes water
and detergent in outlet water flow.
Bayonet Adapter (Not Shown) Connector accommodates the connection of a utility and rotating brush
to the spray gun.
Water Inlet Connection for garden hose. (Note:
You need to use the quickconnect to attach the
garden hose to the pressure washer)
Nozzle Lance Attaches to spray gun and accommodates the adjustable and turbo nozzles.
Rotating Brush Attaches to the spray gun with the
bayonet adapter. Automatically scrubs surfaces when
trigger is engaged.
Utility Brush Attaches to the spray gun with the
bayonet adapter. Use this brush to scrub a variety of
surfaces.
Turbo Nozzle Attaches to the nozzle lance.
Expands the high pressure stream to allow for high
pressure cleaning of larger areas.
Adjustable Nozzle Turn nozzle clockwise for
narrow spray and counterclockwise for fan spray.
Read this owners manual 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.
Spray Gun
Master On/Off Switch
High Pressure Outlet
High Pressure Hose
Adjustable Nozzle
Extension
Nozzle Lance
Water Inlet
Grip Start System
Rotating Brush
Utility Brush
Turbo Nozzle
Safety Flow System
Foamer
6
High Pressure Washer
GENERAC
Generac 1300PSI Electric High Pressure Washer
CARTON CONTENTS
Items in the carton include:
Main Unit
Cart Box (which includes instructions and hardware
to assemble the cart)
Parts Box (which includes the following):
Goggles
Owners Manual
Spray Gun
Nozzle Lance
Foamer
Rotary Brush
Turbo Nozzle
Utility Brush
High Pressure Hose
Parts Bag (which includes the following):
Nozzle Cleaning Kit
Bayonet adapter, must be used to attach the
brushes to the gun.
Quick Connect (male and female ends)
Refer to the above list for an illustrated listing of all
items included with your pressure washer. Become
familiar with each piece before assembling the pressure washer. Check all contents against list. If any
parts are missing, call the pressure washer helpline at
1-800-270-1408.
HOW TO SET UP YOUR PRESSURE WASHER
Follow the instructions in the cart box to assemble
the cart and install it onto the main unit.
Unwind the high pressure hose and attach it to
spray gun (Figure 1).
Attach the high pressure hose to the high pressure
outlet and tighten by hand (Figure 2).
Included with this unit is a quick-connect fitting that
you must attach to the water inlet and your garden
hose. You can install the grey male connector by
hand but you may need to use an adjustable
wrench to tighten it (Figure 3).
Check the screen on the female connector. Make
sure it is clean and check for damage. If you see
any damage in the screen, do not use that female
connector.
Attach the female quick connect to your garden
hose.
Attach garden hose to the water inlet using the
quickconnect. The quickconnect should lock in
place. (Figure 4 on page 7).
AASSSSEEMMBBLLYY
Figure 1 — Attach High Pressure Hose to Spray
Gun.
Figure 2 — Attach High Pressure Hose to Main
Unit.
Figure 3 — Install Quick–Connect
Connect high pressure
hose here
Male QuickConnect
Female QuickConnect
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