RIDGID RD80770 User manual

SAVE THIS MANUAL FOR FUTURE REFERENCE
Your pressure washer has been engineered and manufactured to our high standard for dependability, ease of operation,
and operator safety. When properly cared for, it will give you years of rugged, trouble-free performance.
WARNING:
To reduce the risk of injury, the user must read and understand the operator’s manual before using this product.
Thank you for buying a RIDGID®product.
OPERATOR’S MANUAL
GASOLINE PRESSURE WASHER
RD80770

2
TABLE OF CONTENTS
nIntroduction....................................................................................................................................................................... 2
nImportant Safety Instructions ........................................................................................................................................... 3
nSpecific Safety Rules........................................................................................................................................................ 4
nSymbols.........................................................................................................................................................................5-6
nFeatures.........................................................................................................................................................................7-8
nAssembly .....................................................................................................................................................................9-13
nOperation...................................................................................................................................................................14-18
nMaintenance ..............................................................................................................................................................19-21
nTroubleshooting .............................................................................................................................................................. 22
nWarranty ....................................................................................................................................................................23-25
nParts Ordering/Service ......................................................................................................................................Back page
INTRODUCTION
This tool has many features for making its use more pleasant and enjoyable. Safety, performance, and dependability have
been given top priority in the design of this product making it easy to maintain and operate.

3
IMPORTANT SAFETY INSTRUCTIONS
WARNING:
Read and understand all instructions. Failure to
follow all instructions listed below, may result in
electric shock, fire and/or serious personal injury.
READ ALL INSTRUCTIONS
nKnow your tool. Read the operator’s manual carefully.
Learn the machine’s applications and limitations as well
as the specific potential hazards related to this tool.
nKeep guards in place and in working order. Never oper-
ate the tool with any guard or cover removed. Make sure
all guards are operating properly before each use.
nRemove adjusting keys and wrenches. Form habit of
checking to see that keys and adjusting wrenches are
removed from tool before turning it on.
nTo reduce the risk of injury, keep children and visitors
away. All visitors should wear safety glasses and be kept
a safe distance from work area.
n        
particularly small children, and pets.
nDo not operate the engine in a confined space where
dangerous carbon monoxide fumes can collect.
Carbon monoxide, a colorless, odorless, and extremely
dangerous gas, can cause unconsciousness or death.
nUse right tool. Don’t force tool or attachment to do a
job it was not designed for. Don’t use it for a purpose not
intended.
nDress properly. Do not wear loose clothing, gloves,
neckties, or jewelry. They can get caught and draw you
into moving parts. Rubber gloves and nonskid footwear
are recommended when working outdoors. Also wear
protective hair covering to contain long hair.
n
wearing sandals or similar lightweight footwear. Wear
protective footwear that will protect your feet and improve
your footing on slippery surfaces.
nExercise caution to avoid slipping or falling.
nAlways wear safety glasses with side shields. Everyday
eyeglasses have only impact-resistant lenses; they are
NOT safety glasses.
n  Keep
proper footing and balance at all times.
nUse only recommended accessories. The use of im-
proper accessories may cause risk of injury.
nFollow the maintenance instructions specified in this
manual.
nCheck damaged parts. Before further use of the tool, a
guard or other part that is damaged should be carefully
checked to determine that it will operate properly and
perform its intended function. Check for alignment of
moving parts, binding of moving parts, breakage of parts,
mounting, and any other conditions that may affect its
operation. A guard or other part that is damaged must
be properly repaired or replaced by an authorized service
center to avoid risk of personal injury.
nNever leave tool running unattended. Turn power off.
Don’t leave tool until it comes to a complete stop.
n   to
reduce the chance of a fire hazard.
n 
n    
loading, unloading, transport, and storage of
machine.
nBe thoroughly familiar with controls. Know how to stop
the product and bleed pressure quickly.
nKeep tool dry, clean, and free from oil and grease.
Always use a clean cloth when cleaning. Never use brake
fluids, gasoline, petroleum-based products, or any sol-
vents to clean tool.
nStay alert and exercise control. Watch what you are
doing and use common sense. Do not operate tool when
you are tired. Do not rush.
n
of drugs, alcohol, or any medication.
n        Remove all
objects such as rocks, broken glass, nails, wire, or string
which can be thrown or become entangled in the
machine.
nDo not use tool if switch does not turn it off. Have
defective switches replaced by an authorized service
center.
n shut off the
engine and make certain all moving parts have stopped.
Disconnect the spark plug wire, and keep the wire away
from the plug to prevent accidental starting.
nAvoid dangerous environment. Don’t use in damp or
wet locations or expose to rain. Keep work area well
lit.
nNever use in an explosive atmosphere. Normal
sparking of the motor could ignite fumes.
nDo not operate while smoking or near an open
flame.
nDo not operate around dry brush, twigs, cloth rags, or
other flammable materials.
nWARNING: Risk of injection or injury – Do not direct
discharge stream at persons.

4
SPECIFIC SAFETY RULES
nNever direct a water stream toward people or pets,
or any electrical device.
n     close doors
and windows. Clear the area to be cleaned of debris,
toys, outdoor furniture, or other objects that could create
a hazard.
n
running.
nNever start the machine if ice has formed in any part
of the equipment.
n       
     
in this product. These products can cause physical
injuries to the operator and irreversible damage to the
machine.
nAlways operate the machine on a level surface. If the
engine is on an incline, it could seize due to improper
lubrication (even at the maximum lubricant level).
n       
The jet must not be directed at
persons, animals, electrical devices, or the machine
itself.
nNever attempt to make any adjustments while the
engine (motor) is running (except where specifically
recommended by the manufacturer).
nProtective covers must always cover rotating parts
when the engine is running.
nKeep cooling air intake (recoil starter area) and muffler
side of the engine at least 3 feet away from buildings,
obstructions, and other burnable objects.
n       
hazardous materials.
nKeep away from hot parts. The muffler and other engine
parts become very hot; use caution.
nwhen
starting and operating the engine.
nCheck fuel hoses and joints for looseness and fuel
leakage before each use.
n  for looseness before each use.
A loose bolt or nut may cause serious engine prob-
lems.
nAlways refuel outdoors. Never refuel indoors or in a
poorly ventilated area.
nNever store the machine with fuel in the fuel tank
   where ignition sources are present,
such as hot water and space heaters, clothes dryers,
and the like.
nI
n  handle fuel
with care. It is highly flammable.
nDo not smoke while handling fuel.
nANever remove the
cap of the fuel tank or add fuel while the engine is running
or when the engine is hot.
nLoosen fuel cap slowly to release pressure and to keep
fuel from escaping around the cap.
nReplace all fuel tank and container caps securely.
nWipe spilled fuel from the unit. Move 30 feet away from
refueling site before starting engine.
nIf fuel is spilled, do not attempt to start the engine but
move the machine away from the area of spillage and
avoid creating any source of ignition until fuel vapors
have dissipated.
n         
circumstances.
nBefore storing, allow the engine to cool.
nStore fuel in a cool, well-ventilated area, safely away
from spark and/or flame-producing equipment.
nStore fuel in containers specifically designed for this
purpose.
nEmpty fuel tank and restrain the unit from moving
before transporting in a vehicle.
nWhen servicing use only identical replacement parts.
Use of any other parts may create a hazard or cause
product damage.
nONLY use cold water.
nMake sure minimum clearance of 3 feet is maintained
from combustible materials.
nNever spray close to the surface to be cleaned as you
can damage the surface.
nDo not use the spring clip for support of human


nSave these instructions. Refer to them frequently and
use them to instruct other users. If you loan someone this
tool, loan them these instructions also.

5
SYMBOLS
Some of the following symbols may be used on this tool. Please study them and learn their meaning. Proper interpreta-
tion of these symbols will allow you to operate the tool better and safer.
Read The Operator’s Manual
Safety Alert
SYMBOL NAME DESIGNATION/EXPLANATION
To reduce the risk of injury, user must read and understand
operator’s manual before using this product.
Eye Protection Always wear safety goggles or safety glasses with side shields and,
as necessary, a full face shield when operating this product.
Precautions that involve your safety.
Hot Surface To reduce the risk of injury or damage, avoid contact with any
hot surface.
Risk of Explosion
Risk of Fire
Kickback
Electric Shock Failure to use in dry conditions and to observe safe practices can
result in electric shock.
Fuel and its vapors are extremely flammable and explosive. Fire
can cause severe burns or death.
Toxic Fumes
Gas products emit carbon monoxide, an odorless, colorless,
poison gas. Breathing carbon monoxide can cause nausea,
fainting, or death.
Fuel and its vapors are explosive and can cause severe burns
or death.
To reduce the risk of injury from kickback, hold the spray wand
securely with both hands when the machine is on.
Risk of Injections
To reduce the risk of injection or injury, never direct a water stream
towards people or pets or place any body part in the stream.
Leaking hoses and fittings are also capable of causing injection
injury. Do not hold hoses or fittings.
Chemical Burns
To reduce the risk of injury or damage, DO NOT USE ACIDS,
ALKALINES, BLEACHES, SOLVENTS, FLAMMABLE MATERIAL,
OR INDUSTRIAL GRADE SOLUTIONS in this product.

6
SYMBOLS
SERVICE
Servicing requires extreme care and knowledge and should
be performed only by a qualified service technician. For
service we suggest you return the product to the nearest
AUTHORIZED SERVICE CENTER for repair. When servic-
ing, use only identical replacement parts.
The following signal words and meanings are intended to explain the levels of risk associated with this product.
SYMBOL SIGNAL MEANING
DANGER:
WARNING:
CAUTION:
CAUTION:
Indicates an imminently hazardous situation, which, if not avoided, will
result in death or serious injury.
Indicates a potentially hazardous situation, which, if not avoided, could
result in death or serious injury.
Indicates a potentially hazardous situation, which, if not avoided, may result
in minor or moderate injury.
(Without Safety Alert Symbol) Indicates a situation that may result in prop-
erty damage.
WARNING:
To avoid serious personal injury, do not attempt
to use this product until you read thoroughly and
understand completely the operator’s manual. Save
this operator’s manual and review frequently for
continuing safe operation and instructing others
who may use this product. Call RIDGID®customer
service for assistance.
The operation of any power tool can result in foreign objects being thrown into your eyes, which can result
in severe eye damage. Before beginning power tool operation, always wear safety goggles or safety glasses
with side shields and a full face shield when needed. We recommend Wide Vision Safety Mask for use over
eyeglasses or standard safety glasses with side shields. Always use eye protection which is marked to
comply with ANSI Z87.1.
WARNING:

7
FEATURES
Fig. 1
PRODUCT SPECIFICATIONS
Engine Size....................................................................................................................................................................389cc
Fuel Tank Capacity ................................................................................................................................................ 3.5 gallons
Maximum Pounds Per Square Inch Pressure* ......................................................................................................... 3,800 psi
Maximum Gallons Per Minute*......................................................................................................................................4 gpm
Maximum Inlet Water Temperature ................................................................................................................................104˚F
*Max. rating determined by PWMA Standard 101
MOVING
haNdle
fuel taNk
trIGGer wIth
lOck Out
waNd
StOraGe
hOlSter
trIGGer
haNdle
NOzzleS aNd
NOzzle hOlder
Muffler
ShIeld
hONda eNGINe
fraMe
SuppOrt
recOIl
Starter
chOke
fuel ValVe
leVer
craNe
lIftING
hOOk
preSSure/flOw
adjuStMeNt
haNdle
hOSe
StOraGe
baG
thrOttle
leVer
Spray waNd

8
FEATURES
KNOW YOUR PRESSURE WASHER
See Figure 1.
The safe use of this product requires an understanding of
the information on the tool and in this operator’s manual as
well as a knowledge of the project you are attempting. Be-
fore using this product, familiarize yourself with all operating
features and safety rules.
CRANE LIFTING HOOK
The crane lifting hook in the center of the unit makes lifting
the machine for transportation and/or relocation easy.
FUEL TANK
This fuel tank has a maximum 3.5 gallon capacity.
FUEL VALVE LEVER
The fuel valve lever opens and closes to allow fuel to pass
between the fuel tank and the carburetor. The lever must be
open to start the engine and should always be closed before
storing the machine.
HONDA GX390 ENGINE
This industrial strength Honda engine enables the
pressure washer to achieve 3,800 psi (pounds per square
inch) at a rate of 4.0 gpm (gallons per minute). Please read
the engine manual included with this product.
NOTE: This engine comes equipped with an Oil Alert™
system that automatically stops the engine when the lubri-
cant level drops below a safe limit. This system is designed
to prevent engine damage caused by not having enough
lubricant in the crankcase.
HOSE STORAGE BAG
A hose storage bag, located on the back of the machine,
provides easy storage and retrieval of hoses.
ON / OFF SWITCH
The on/off switch must be in the ON position (down) for the
engine to run. When the switch is in the OFF position (up),
the engine will stop running.
PRESSURE/FLOW ADJUSTMENT HANDLE
Use the pressure/flow adjustment handle to change the
pressure/flow levels of the cleaning stream for acceptable
pressure/flow for every project.
PRESSURE RELIEF VALVE
The pressure relief valve prevents unsafe pressure levels
from building up in the pressure washer. It is not uncommon
to notice occasional drips from the valve.
RECOIL STARTER
The recoil starter is pulled to start the machine.
SPARK ARRESTOR
This engine is not factory equipped with a spark arrestor.
In some areas it is illegal to operate an engine without a
spark arrestor. A spark arrestor is available from authorized
Honda servicing dealers. Please refer to the engine manual
included with this product for more information.
THERMAL RELIEF VALVE
To prevent water temperature from reaching harmful
levels in the pump, the thermal relief valve will release a
small amount of water from a rubber hose. Once the water
has reached safe temperature levels, the thermal relief valve
will reset itself.
TRIGGER HANDLE
The trigger handle has a grooved gripping surface that pro-
vides added control and helps reduce fatigue.
TRIGGER WITH LOCK OUT
Pulling the trigger releases a stream of water for high
pressure cleaning. The lock out provides protection against
unauthorized use or unintentional use.
WAND STORAGE HOLSTER
Store the spray wand and trigger handle in the convenient
wand storage holster provided on the side of the machine.

9
ASSEMBLY
UNPACKING
This product requires assembly.
nCarefully cut the box down the sides then remove the
machine and any accessories from the box. Make sure
that all items listed in the packing list are included.
NOTE: This machine is heavy and requires a minimum of
two people to lift. To avoid back injury, lift with your legs
and not your back.
nInspect the machine carefully to make sure no breakage
or damage occurred during shipping.
nDo not discard packing material until you have carefully
inspected and satisfactorily operated the machine.
n. Grasp the handle on top of the machine frame. Pull the
handle up and back until it locks in place.
nIf any parts are damaged or missing, please call
1-866-539-1710 for assistance.
PACKING LIST
Pressure Washer
50 ft. High Pressure Hose
Spray Wand
Trigger Handle
Wand Storage Holster
Quick-Connect Nozzle (5)
Nozzle Cleaning Tool
Injection Hose
Wheel (2)
Flat Washer (2)
Axle (2)
Hitch Pin (2)
Frame Support (2)
Hex Bolts & Hex Nuts (4-40 mm, 4-25 mm)
4-Cycle Engine Lubricant (10W30)
Engine Manual
Operator’s Manual
WARNING:
If any parts are damaged or missing, do not oper-
ate this tool until the missing parts are replaced.
Failure to heed this warning could result in serious
personal injury.
Fig. 2
hItch pIN
aXle
waSher
WARNING:
Do not attempt to modify this tool or create acces-
sories not recommended for use with this tool. Any
such alteration or modification is misuse and could
result in a hazardous condition leading to possible
serious personal injury.
WARNING:
To prevent accidental starting that could cause
serious personal injury, always disconnect the
engine spark plug wire from the spark plug when
assembling parts.
ATTACHING THE WHEEL ASSEMBLY
See Figure 2.
To attach the wheels to the pressure washer base:
nLocate the axle, flat washers, hitch pins, and wheels.
Remove the hitch pin from the axle.
nSlide the axle through the hole in the center of the wheel
then slide a washer over the axle.
nLift the machine and slide the axle/wheel/washer
combination into the wheel mounting hole in the
machine base as shown.
nPush the hitch pin into the hole on the end of the axle
to secure the wheel assembly.
NOTE: The hitch pin should be pushed into the axle
until the center of the pin rests on top of the axle.
nRepeat with the second wheel.

10
ASSEMBLY
Fig. 3
fraMe
SuppOrt
INSTALLING THE FRAME SUPPORTS
See Figure 3.
nLocate the frame supports, hex bolts (2 long and 2 short),
and hex nuts.
nRaise the end of the pressure washer high enough to
access the frame bottom. Position blocks of wood under
the machine for support.
nAlign the hole on the frame support with holes on machine
frame.
nInsert hex bolts through the hole in the machine frame
so that they pass through the frame support. Tighten the
bolts to the frame securely using hex nuts.
nRepeat on other side.
INSTALLING THE PUMP OIL CAP
See Figure 4.
Remove and discard the cap securing the plastic bag to the
oil pump. Remove the cap from the bag.
To install the pump oil cap:
Screw the pump oil cap into the hole covering the lubricant
reservoir.
CAUTION:
Failure to install pump oil cap may result in
decreased pump life.
INSTALLING THE WAND STORAGE HOLSTER
See Figure 4.
Place key slots (on back of wand storage holster) over the
two bolts. Push the holster against the frame. When the bolts
are through the key slots, push the holster toward the floor.
Tighten the hex nuts.
heX NutS
heX bOltS
(ShOrt)
key SlOtS
heX bOltS
(lONG)
puMp
OIl cap
Fig. 4
WARNING:
Make sure the nozzle and hose connections are
secure before starting the machine. A non-secured
accessory could become a projectile if not properly
installed which could result in serious injury.
ASSEMBLING THE TRIGGER HANDLE
See Figure 5.
nPlace the threaded end of the spray wand in the connec-
tor on the end of the trigger handle.
nTurn the connector clockwise until it stops. This secures
the spray wand in place.
nWhen not in use, remove the spray wand from the trig-
ger handle by turning the connector counterclockwise.
Store the unassembled spray wand in the wand storage
holster.