Graco 333031E Pressure Washers Users Manual 333031E, Washers, Operation, Repair, Parts, English

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333031E

EN

Operation/Repair/Parts

Pressure Washers

For high pressure water cleaning. For professional use only.

See page 2 for model information and maximum working pressure.

Important Safety Instructions

Read all warnings and instructions in this

manual and in the gas engine manual.

Save these instructions.

ti22506a

ti22505a

Direct-Drive Models

Belt-Drive Models

Models

2333031E

Contents

Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Safety Symbols and Meanings . . . . . . . . . . . . . . 3

Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Personal Protective Equipment . . . . . . . . . . . . . . 7

Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Engine Fuel Tank . . . . . . . . . . . . . . . . . . . . . . . . 7

Pressure Relief Procedure . . . . . . . . . . . . . . . . . . . 8

Nozzle Review . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Nozzle Connection . . . . . . . . . . . . . . . . . . . . . . 10

Water Supply . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Unloader . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Priming the Pump . . . . . . . . . . . . . . . . . . . . . . . 12

Start-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Cleaning with Detergents . . . . . . . . . . . . . . . . . 14

Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Nozzles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Quick Couplers . . . . . . . . . . . . . . . . . . . . . . . . . 15

Belt Tension Adjustment . . . . . . . . . . . . . . . . . . 15

Winterizing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Parts (Belt-Drive Models) . . . . . . . . . . . . . . . . . . . 19

Sprayer Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Sprayer Parts List . . . . . . . . . . . . . . . . . . . . . . . 20

Pump 127382 . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Pump 127384 . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Parts (Direct-Drive Models) . . . . . . . . . . . . . . . . . . 23

Sprayer Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Sprayer Parts List . . . . . . . . . . . . . . . . . . . . . . . 24

Pump 127383 . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Pump 127417 . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Pump 127385 . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Pump 127420 . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Pump 127419 . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Pump 127418 . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Graco Standard Warranty . . . . . . . . . . . . . . . . . . . 36

Models

Part No. Model Operating Pressure

PSI MPa Bar

24U618 2525DD 2500 17.2 172

24U626

24U619 2532DD 3200 22 220

24U985

24U620 3027DD 2700 18.6 186

24U986

24U987 3032DD 3200 22 220

24U621

24U988 4040DD 4000 27.6 276

24U622

24U989 4040DDC 4000 27.6 276

24U623

24U990 4040BD 4000 27.6 276

24U624

24U991 4040BDC 4000 27.6 276

24U625

Models

333031E 3

Safety Symbols and Meanings

The following safety symbols appear on the equipment and throughout this manual. It is important that you read the

table below and understand what each symbol means.

Symbol Meaning

Burn Hazard

Ejected Parts Hazard

Electric Shock Hazard

Fall Hazard

Fire and Explosion Hazard

Entanglement Hazard

Recoil Hazard

Skin Injection Hazard

Splash Hazard

Toxic Fluid or Carbon Monoxide Hazard

Do Not Stop Leaks or Deflect Leaks

Do Not Use Flammable Liquids

Do Not Spray People or Animals

Eliminate Ignition Sources

Hold Firmly With Both Hands

Perform Pressure Relief Procedure

Read Manual Before Using Equipment

Wear Personal Protective Equipment

Equipment Misuse Hazard

Symbol Meaning

Warnings

4333031E

Warnings

The following warnings are for the setup, use, grounding, maintenance, and repair of this equipment. The exclama-

tion point symbol alerts you to a general warning and the hazard symbols refer to procedure-specific risks. When

these symbols appear in the body of this manual or on warning labels, refer back to these Warnings. Product-specific

hazard symbols and warnings not covered in this section may appear throughout the body of this manual where

applicable.

WARNINGWARNINGWARNING

WARNING

CARBON MONOXIDE HAZARD

Exhaust contains poisonous carbon monoxide, which is colorless and odorless. Breathing carbon

monoxide can cause death.

• Do not operate in an enclosed area.

RECOIL HAZARD

Gun may recoil when triggered. If you are not standing securely, you could fall and be seriously injured.

•Hold onto gun/wand firmly with both hands to avoid kickbacks.

FALL HAZARD

Use of this equipment can create puddles and slippery surfaces. High pressure spray could cause you to fall

if you are too close to the cleaning surface.

•Keep spray nozzle between 8 to 24 inches (20 to 60 cm) away from cleaning surface.

•Always operate equipment on a stable surface.

•Cleaning area should have adequate slopes and drainage to reduce possibility of falls due to slippery

surfaces.

•Be extremely careful if you must operate equipment from ladder, scaffolding, or any other relatively

unstable location.

FIRE AND EXPLOSION HAZARD

Flammable vapors in the work area and can ignite or explode. To help prevent fire and explosion:

•Do not spray flammable liquids.

•Operate pressure washers outdoors only.

• Eliminate all ignition sources; such as pilot lights, cigarettes, portable electric lamps, and plastic

drop cloths (potential static arc).

•When transporting or repairing equipment, transport or repair with the fuel tank empty or with fuel shutoff

valve turned off.

•Do not fill fuel tank while engine is running or hot; shut off engine and let it cool. Fuel is flammable and

can ignite or explode if spilled on hot surface.

•Keep work area free of debris, including solvent, rags and gasoline.

ELECTRIC SHOCK HAZARD

Spray contact with electrical wiring can result in serious injury or death.

•Keep water spray away from electric wiring.

Warnings

333031E 5

SKIN INJECTION HAZARD

High-pressure spray is able to inject toxins into the body and cause serious bodily injury. In the event that

injection occurs, get immediate surgical treatment.

•Keep clear of nozzle. Do not spray any person, yourself or any animal.

•Keep hands and other body parts away from the discharge. Do not try to stop leaks with any part of the

body.

•This product is to be used only by trained operators.

•Use caution when cleaning and changing nozzle tips. In the case where the nozzle tip clogs while

spraying, follow the Pressure Relief Procedure for turning off the unit and relieving the pressure before

removing the nozzle tip to clean.

•Do not leave the unit energized or under pressure while unattended. When the unit is not in use, turn off

the unit and follow the Pressure Relief Procedure for turning off the unit.

•Check hoses and parts for signs of damage. Replace any damaged hoses or parts.

•Use Graco replacement parts or accessories that are approved for the rated pressure of the pressure

washer.

•Always engage the trigger lock when not spraying. Verify the trigger lock is functioning properly.

•Verify that all connections are secure before operating the unit.

•Know how to stop the unit and bleed pressure quickly. Be thoroughly familiar with the controls.

BURN HAZARD

Running engines produce heat and hot exhaust gases. Temperature of muffler and nearby areas can reach

or exceed 150° F (65° C). Fire or severe burns can occur.

•Do not touch hot surfaces.

•Stay clear of exhaust gases.

•Never move equipment while operating.

•Allow equipment to cool before touching.

ENTANGLEMENT HAZARD

Rotating parts can cause serious injury.

•Keep clear of moving parts.

•Do not operate equipment with protective guards or covers removed.

TOXIC FLUID HAZARD

Toxic fluids or fumes can cause serious injury or death if splashed in the eyes or on skin, inhaled, or

swallowed.

•Do not use pressure washer to dispense hazardous detergents or acid-type cleaners.

•Do not alter chemical injector feature that is listed in the manual.

•Read MSDSs to know the specific hazards of the fluids you are using.

•Route exhaust away from work area.

PERSONAL PROTECTIVE EQUIPMENT

Wear appropriate protective equipment when in the work area to help prevent serious injury, including eye

injury, hearing loss, inhalation of toxic fumes, and burns. This protective equipment includes but is not

limited to:

•Protective eyewear, and hearing protection.

•Respirators, protective clothing, and gloves as recommended by the detergent manufacturer.

WARNINGWARNINGWARNING

WARNING

Warnings

6333031E

EQUIPMENT MISUSE HAZARD

Misuse can cause death or serious injury.

• Always wear appropriate gloves, eye protection, and a respirator or mask when spraying.

• Do not operate or spray near children. Keep children away from equipment at all times.

• Do not overreach or stand on an unstable support. Keep effective footing and balance at all times.

• Stay alert and watch what you are doing.

• Do not leave the unit energized or under pressure while unattended. When the unit is not in use, turn

off the unit and follow the Pressure Relief Procedure for turning off the unit.

• Do not operate the unit when fatigued or under the influence of drugs or alcohol.

• Keep operating area clear of all persons.

• Do not kink or over-bend the hose.

• Do not expose the hose to temperatures or to pressures in excess of those specified by manufac-

turer.

• Do not use the hose as a strength member to pull or lift the equipment.

• Follow the maintenance instructions specified in the manual.

• Do not alter or modify equipment. Alterations or modifications may void agency approvals and create

safety hazards.

• Make sure all equipment is rated and approved for the environment in which you are using it.

CALIFORNIA PROPOSITION 65

The engine exhaust from this product contains a chemical known to the State of California to cause

cancer, birth defects or other reproductive harm.

This product contains a chemical known to the State of California to cause cancer, birth defects or other

reproductive harm. Wash hands after handling.

The following instructions are required by California state law, section 4442 of the California Public

Resource Code. Other states may have similar laws. Federal laws apply on federal land.

•A spark arrestor must be added to the muffler of this engine if it is to be used on any forest-covered,

brush-covered, or grass-covered unimproved land.

•See your engine or equipment dealer for spark arrestor muffler options.

WARNINGWARNINGWARNING

WARNING

Installation

333031E 7

Installation

Personal Protective Equipment

Setup

This unit should only be placed on a level surface while

operating to ensure proper lubrication for the engine and

water pump.

Be certain to block wheels to prevent unit from moving

while operating.

Before initial use, make sure the oil cap/dipstick is

inserted into the pump. Because of varying shipping

requirements, the pump may need to be shipped with an

oil travel plug instead of the dipstick in the pump. If your

pump has been shipped with an oil travel plug, you will

need to remove it and replace the plug with the oil dip-

stick provided with the unit.

Once properly installed, check the oil sight glass on the

pump crankcase. Make sure the oil level is in the center

of the sight glass before each use. If the level appears

to be low, add pump oil and fill only to the center of the

oil sight glass. Refer to the Parts List for the correct

pump oil. Do not overfill!

Engine Fuel Tank

A minimum of 86 octane fuel is recommended for use

with this unit. Do not mix oil with gasoline.

Purchase fuel in quantities that may be used within 30

days. Use of clean, fresh lead-free gasoline is recom-

mended. Leaded gasoline may be used if lead-free is

unavailable. Do not use gasoline containing methanol or

alcohol.

Check the engine oil level before starting the engine

(see engine manual).

Fill the fuel tank according to engine manual.

Occasional carburetor and choke adjustments will be

necessary for the engine. Refer to the engine manual

supplied with this unit for proper adjustment procedures.

Review the engine manual accompanying this pressure

washer for correct engine start-up and maintenance pro-

cedures.

INJECTION AND INHALATION HAZARD

Proper attire is essential to your safety. It is advised

to utilize whatever means necessary to protect eyes,

ears and skin. Additional safety attire (such as

respiratory mask) may be required when using

detergent cleaning agents with this washer.

FIRE AND EXPLOSION HAZARD

Do not use unit in an area:

• with insufficient ventilation

• where there is evidence of oil or gas leaks

• where flammable gas vapors may be present

BURST HAZARD

Do not allow unit to be exposed to rain, snow or freez-

ing temperatures. If any part of the unit becomes fro-

zen, excessive pressure may build up which could

cause it to burst and result in possible serious injury.

Pressure Relief Procedure

8333031E

Pressure Relief Procedure

Follow the Pressure Relief Procedure whenever

you see this symbol.

1. Engage trigger lock.

2. Turn unit off.

3. Shut off water supply. Disconnect from water.

4. Disengage trigger lock.

5. Trigger gun to relieve pressure.

6. Engage trigger lock.

7. If you suspect the spray tip or hose is clogged or

that pressure has not been fully relieved after follow-

ing the steps above, VERY SLOWLY loosen hose

end coupling to relieve pressure gradually, then

loosen completely. Clear hose or tip obstruction.

This equipment stays pressurized until pressure is

manually relieved. To help prevent serious injury

from pressurized fluid, such as skin injection,

splashing fluid and moving parts, follow the Pressure

Relief Procedure when you stop spraying and before

cleaning, checking, or servicing the equipment.

Pressure Relief Procedure

333031E 9

Nozzle Review

Various nozzles may be quick-connected into the end of

the wand to change the spray pattern or use the deter-

gent feature.

To determine spray fan, refer to the number stamped on

the nozzle. The first two digits indicate the spray fan

degrees, i.e.; 0=0°, 25=25°, 40=40°, 65 = detergent/low

pressure.

0° nozzle (RED): This is a blasting nozzle, which deliv-

ers a very concentrated stream of water. Be cautious

when using the straight narrow stream. It is not recom-

mended for use on painted or wood surfaces, or items

attached with adhesive backings. Uses: Removing

weeds from sidewalk cracks, stubborn stains from con-

crete, masonry, aluminum and steal, caked mud from

equipment, and cleaning lawn mower undersides.

15° nozzle (YELLOW): This is a chiseling nozzle. The

spray should be directed at a 45° angle to the surface

and used like a scraper to remove paint, grease and dirt.

Uses: Surface preparation (removing mildew stains and

paint chips).

25° nozzle (GREEN): This is a flushing nozzle. This

pattern is best suited for flushing dirt, mud, and grime.

Uses: Wet sweeping leaves from walks, curbs and

driveways, cleaning stable floors, washing swimming

pool bottoms, and de-greasing engines.

40° nozzle (WHITE): This is a wash nozzle. This wide

spray pattern disperses the water pressure over a larger

area and is recommended for moderate washing. Uses:

Washing down aluminum siding, cleaning windows,

washing vehicles, spraying sidewalks, driveways and

patios. NOTE: Not available for Model 2525.

65° nozzle (BLACK): This is a low pressure detergent

application nozzle. This broad spray pattern distributes

solution over vast areas under low pressure. Uses:

Detergent application, misting or rinsing.

EJECTED PARTS HAZARD

When using Quick Connects, be certain the

connection is securely locked. If connections are not

securely locked, the high pressure water may eject

the nozzle from the wand, causing severe injury or

serious damage.

Always point wand always from you when changing

nozzle. Perform Pressure Relief Procedure

(page 8) before changing nozzle.

Pressure Relief Procedure

10 333031E

Nozzle Connection

1. Perform Pressure Relief Procedure, page 8.

2. Engage trigger lock.

3. The nozzle assembly should be disconnected from

the gun/wand assembly at this time by retracting the

locking ring on the quick-connect fitting to remove

the nozzle.

Water Supply

Select a water supply hose which is a quality grade of

garden hose measure at least 3/4 in. (19.05 mm) ID and

no longer than 50 feet (15.24 m).

Check the water inlet strainer to make sure it is clean

and free of any obstructions. Periodic cleaning of the

water strainer will help prevent pump problems.

1. Unscrew garden hose inlet connection from front of

filter assembly.

2. Remove clear plastic cover and clean filter screen.

Connect the hoses

1. Connect one end of water supply hose to water inlet

of unit.

2. Connect other end of hose to pressurized water

supply. When connecting water inlet to water supply

mains, local regulations of your water company

must be observed. In some areas, the unit must not

be connected directly to public drinking water sup-

ply. This prevents feedback of the detergents into

the water supply. Direct connection is permitted if a

back flow preventer is installed.

3. Quick-connect high pressure discharge hose to

water outlet of unit.

4. Connect other end of discharge hose to gun assem-

bly.

Follow incoming water requirements listed below:

1. Water pressure must be a minimum of 25 psi (0.17

MPa,1.72 bar) and a maximum of 125 psi (0.86

MPa, 8.6 bar). NOTE: A typical outdoor faucet will

generally supply this psi if fully turned on.

2. Incoming GPM must be at least one gallon more

than the outgoing GPM stated on pressure washer

nameplate. NOTE: You can check GPM by timing

how long it takes to fill a 5 gallon container.

NOTICE

As a strainer becomes obstructed, it restricts proper

flow of water to the pump. This can result in cavitation

which will cause premature failure of pump packings.

NOTICE

Incoming water temperature must not exceed 140° F

(60° C). Excessive pump damage may result if the

water temperature exceeds this acceptable level.

Never allow the unit to operate without the incoming

water line attached and the water supply fully turned

on. Damage to the equipment could occur.

Pressure Relief Procedure

333031E 11

Unloader

Adjustment Knob

The unloader valve on your machine is equipped with an

adjustment knob to adjust the pressure. If less pressure

is needed, turn the adjustment knob counter-clockwise.

To set back to maximum, turn adjustment knob fully

clockwise. Do not over tighten.

Thermal Relief Valve

To ensure the water temperature does not exceed

acceptable levels, never allow the unit to operate in the

bypass mode (unit running with gun trigger closed) for

more than three minutes.

A thermal relief valve has been added to this unit to pro-

tect the pump. It may begin to open and release water if

the water temperature in the pump has exceeded 140°F

(60°C). This will allow fresh, cool water to enter the sys-

tem.

Pre-Start Inspection Procedures

Before starting the unit, perform the following proce-

dures:

1. Check oil level in pump and engine.

2. Inspect water inlet strainer. Clean or replace if nec-

essary (see Water Supply, page 10).

3. Check all hose connections to make sure they are

tightened securely (see Water Supply, page 10).

NOTICE

Do not overtighten the unloader. Breakage could

result in immediate loss of water pressure and costly

repairs.

FIRE AND EXPLOSION HAZARD

Inspect for system fuel leaks. If a fuel leak is found,

do not start unit. See Fire and Explosion Hazard on

page 4. Make sure all damaged parts are replaced

and mechanical problems are corrected prior to

operation of unit. If service is required, contact Graco

Customer Service.

INJECTION HAZARD

Inspect high pressure hoses for kinking, cuts and

leaks. If a cut or leak is found, do not use hose.

Replace hose before starting unit (see Skin

Injection Hazard, page 5). Be sure that all damaged

parts are replaced and that the mechanical problems

are corrected prior to operation of the unit. If you

require service, contact Graco Customer Service.

Operation

12 333031E

Operation

Priming the Pump

It is essential to prime the pump on initial start-up and

each time the water supply is disconnected from the unit

after initial use.

1. Lay high pressure hose out to remove any loops.

Water flow will constrict hose and create tight loops

if hose is not straight.

NOTE: The nozzle assembly should not be con-

nected to the gun assembly at this time. See Nozzle

Connection, page 10.

2. Engage trigger lock and turn water supply fully on.

Point gun away from yourself or anyone else, disen-

gage trigger lock and squeeze trigger.

NOTE: Low pressure water will begin flowing from

hose/gun assembly. This allows unit to prime and

purge any air from system. Unit is primed when

water flow is uninterrupted by air.

3. Once unit is primed, release trigger and engage trig-

ger lock. Securely connect nozzle assembly (see

Nozzle Connection, page 10).

NOTICE

Make sure the nozzle is not connected to the unit

while priming the pump. Priming allows mineral

deposits to be released from the system which could

obstruct or damage the nozzle assembly resulting in

costly repairs.

Operation

333031E 13

Start-Up

1. Engage trigger lock and point gun away from your-

self or anyone else. Make sure water supply is fully

turned on.

2. Disengage trigger lock and squeeze trigger. Low

pressure water will begin flowing from nozzle.

3. Make sure gun remains in an open position while

starting engine. NOTE: Brace yourself. Gun will

kickback from high pressure created by pump once

engine has started.

4. Steady unit during engine start-up. See accompany-

ing engine manual for correct procedures needed to

start engine.

5. Once engine has started, perform the following pro-

cedures with gun open:

6. Trigger gun several times. Make sure to engage

trigger lock whenever changing quick-connect noz-

zles.

This pressure washer delivers a high pressure spray

and a variety of spray patterns. There are many clean-

ing jobs that can be done without the use of detergents.

If a cleaning agent is required, see Cleaning with

Detergents (page 14) for correct procedures.

Never look directly into the nozzle. High pressure

water creates a risk for severe injury.

FIRE AND EXPLOSION HAZARD

Inspect for system oil leaks and fuel leaks. If a fuel

leak is found, immediately turn off unit. Make sure all

damaged parts are replaced and mechanical

problems are corrected prior to operation of unit. If

service is required, contact Graco Customer Service.

INJECTION HAZARD

Inspect high pressure hoses for kinking, cuts and

leaks. If a cut or leak is found, do not touch hose at

leak. Turn unit off immediately. Replace hose before

restarting unit. Make sure all damaged parts are

replaced and mechanical problems are corrected

prior to operation of unit. If service is required,

contact Graco Customer Service.

NOTICE

Do not allow unit to operate in bypass mode (with trig-

ger closed) for more than three minutes without trig-

gering gun. This can cause premature failure of pump

packing seals and result in costly pump repair.

NOTICE

Do not allow spray pattern to remain on a fixed area

for an extended period of time. Possible damage to

that area may occur.

Operation

14 333031E

Cleaning with Detergents

Some units are equipped with adjustable detergent

knobs. Locate the clear vinyl hose which leads to the

pump head.

If injector is equipped with adjustment knob on pump

head, detergent amount can be adjusted by turning the

knob completely counter-clockwise to set at maximum

siphon rate.

If injector is not equipped with an adjustment knob,

detergent ratio is preset and cannot be adjusted.

1. Immerse detergent strainer into detergent solution

to allow detergent to siphon.

2. Engage trigger lock and secure quick-connect

detergent spray nozzle (#6540° BLACK) into end of

wand.

NOTE: This injection system is designed to apply deter-

gents under low pressure only. It will not allow detergent

solutions to be introduced into the system unless the

nozzle assembly is in the low pressure detergent mode.

3. To apply solution; disengage trigger lock and

squeeze trigger. A detergent/water mixture will exit

low pressure nozzle. Start spraying lower portion of

surface being cleaned and move up, using long

overlapping strokes. NOTE: Applying from the bot-

tom up helps avoid streaking. Allow to soak briefly.

Do not allow detergent solution to dry on the sur-

face. Avoid working on hot surfaces or in direct sun-

light to minimize the chances of the detergent

drying, which may result in damaging painted sur-

faces. Rinse a small section at a time.

4. To rinse; engage trigger lock and securely connect

desired high pressure nozzle into end of wand. Dis-

engage trigger lock and spray. It will take about 30

seconds to purge all detergent from line. For best

rinsing results, start at the top and work down.

5. Siphon a gallon of water through low pressure

detergent injection system after each use. This

reduces the possibility of corrosion or detergent res-

idue causing mechanical problems during next use.

Shutdown

1. Turn engine “OFF” (see engine manual).

2. Turn water supply “OFF”.

3. Point gun in a safe direction and trigger gun to

relieve any trapped pressure.

4. Once pressure is relieved, disconnect nozzle

assembly.

5. Disconnect and drain gun, wand and hose.

6. Wipe unit clean and store with gun, wand and hoses

in a non-freezing area.

BURN OR EXPLOSION HAZARD

Always wear protective safety attire.

Prepare detergent solution according to label direc-

tions. Never pump hazardous detergents or acid-type

cleaners through unit.

Maintenance

333031E 15

Maintenance

Engine

The engine instructions that accompany the unit detail

specific procedures for engine maintenance. Following

the engine manufacturer's recommendations will extend

engine work life.

Pump

The pump oil must be changed after the first 25 hours of

operation on all units. Once the initial oil change has

been completed, it is recommended the oil be changed

every 3 months or 250 hour intervals. If oil appears dirty

or milky, changes may be required at a greater fre-

quency. Add pump oil and fill only to the center of the

sight glass. Refer to the parts listing for the correct

pump oil. Do not overfill.

Nozzles

Water flow through the spray nozzle will erode the ori-

fice, making it larger and result in a pressure loss. Noz-

zles should be replaced whenever pressure is less than

85% of the maximum. The frequency of replacement will

depend upon such variables as mineral content in the

water and number of hours the nozzle is used.

Quick Couplers

There is an o-ring seal inside the female quick coupler.

This o-ring will deteriorate or, if the unit is allowed to

pump without the high pressure hose or nozzle

attached, the o-ring may be blown out occasionally.

Insert a replacement o-ring to correct the leak. Addi-

tional o-rings can be purchased from your dealer.

Belt Tension Adjustment

To maintain peak performance, it may be necessary to

occasionally adjust the belt tension. Perform the follow-

ing steps:

1. Remove belt guard and loosen two nuts on each

side of pump (A).

2. Turn cap screw (B) clockwise until a 1/2 in. (12.7

mm) belt deflection is noticed between the pulleys.

3. Tighten side nuts (A).

4. Put a straight edge across both pulleys. If neces-

sary, loosen one set of pulley screws and adjust in

or out to properly align. Tighten pulley screws and

check tension again.

5. Replace belt guard and tighten fasteners securely.

Maintenance

16 333031E

Winterizing

For storage and transportation purposes in subfreezing

ambient temperatures, it will be necessary to winterize

the unit. The unit must be protected to the lowest

incurred temperature for the following reasons:

• If any part of the pumping system becomes frozen;

excessive pressure may build up in the unit which

could cause the unit to burst and result in possible

serious injury.

• The pumping system in this unit may be perma-

nently damaged if frozen. Freeze damage is not

covered by warranty.

If you must store the unit in an area where the tempera-

ture falls below 32° F (0° C), perform the following steps:

Gather the following items:

• Two 5 gallon containers.

• One gallon of antifreeze.

• Water supply.

• Three foot hose, 1/2-3/4 in. ID with a 3/4 in. male

garden hose fitting.

Procedure

1. To start winterizing, unit must be run and primed

(see Start-Up, page 13).

2. After running and priming, shut off unit and water

supply.

3. Relieve system pressure by pointing gun away from

yourself and anyone else and squeezing trigger until

water flow ceases to exit nozzle.

4. Engage trigger lock and remove nozzle.

5. In one 5 gallon container, mix antifreeze and water

according to manufacturer’s recommendations for

winterizing temperature.

NOTE: Proper winterizing is based on the recom-

mended manufacturer’s instructions listed on the

Protections Chart shown on the back label of most

antifreeze containers.

6. Remove water supply hose from unit and attach 3 ft

hose securely to inlet connection. Submerge other

end into antifreeze solution.

7. Shut off detergent injector if applicable.

8. Point wand into empty container and start unit.

9. Trigger gun until antifreeze begins to exit wand.

Release trigger for 3 seconds, then trigger gun for 3

seconds. Continue cycling gun several times until all

antifreeze mixture is siphoned from container.

10. Stop unit.

11. Detach 3 ft hose from unit and drain any excess

antifreeze back into 5 gallon container.

12. Disconnect hose/gun/wand assembly from unit and

drain any excess antifreeze back into 5 gallon con-

tainer.

13. Store hose, gun and wand with unit in a

non-freezing area.

14. Store antifreeze solution for next use or dispose

according to state EPA laws.

Optional Procedure

1. Shut off unit and water supply.

2. Relieve system pressure by pointing gun away from

yourself and anyone else and squeezing trigger until

water flow ceases to exit nozzle.

3. Disconnect and drain hose, gun and wand.

4. Start unit and allow it to run until all water exits from

unit. Once water has stopped flowing from unit, turn

unit off.

NOTICE

Do not store/operate unit in a freezing environment.

Damage to washer could occur.

NOTICE

When using this procedure, caution should be used

as ice chips can form from drops of water which could

cause the unit to burst. Allow unit to completely thaw

before starting.

Troubleshooting

333031E 17

Troubleshooting

1. Follow Pressure Relief Procedure, page 12,

before checking or repairing gun.

2. Check all possible problems and causes before dis-

assembling gun.

Problem Cause Solution

Engine not starting or hard to start No gasoline in fuel tank or carburetor Fill the tank with gasoline and open

fuel shut off valve.

Check fuel line to carburetor.

Low oil Add oil to proper level.

Start/Stop switch in STOP position Move switch to START position.

Water in fuel, or old fuel Drain fuel tank and carburetor. Use

new fuel, and make sure spark plug

is dry.

Engine flooded or improperly choked Open choke, and crank engine sev-

eral times to clear out gas. Make

sure spark plug is dry.

Dirty air cleaner filter Remove and clean.

Dirty spark plug, wrong gap, or

wrong type

Clean spark plug, adjust the gap, or

replace.

Gun not triggered Trigger gun while starting engine.

Engine not operating properly or

lacking power

Partially plugged air cleaner filter Remove and clean.

Spark plug dirty, wrong gap, or

wrong type

Clean spark plug, adjust the gap, or

replace.

Pressure too low and/or pump run-

ning roughly

Worn or wrong size tip Replace with tip of proper size

Inlet filter clogged Clean filter. Check more frequently.

Worn packings, abrasives in water,

or natural wear

Check filter. Replace packings.

Inadequate water supply Check water flow rate to pump.

Belts slipping Tighten or replace belts; use correct

belts, and replace both at same time.

Fouled or dirty inlet or discharge

valves

Clean inlet and discharge valve

assemblies. Check filter.

Restricted inlet Check if garden hose is collapsed or

kinked.

Worn inlet or discharge valves Replace worn valves.

Leak in high-pressure hose Replace high-pressure hose.

Water leaking from under pump man-

ifold

Worn packings Install new packings.

Troubleshooting

18 333031E

Water in pump oil Humid air condensing inside crank-

case

Change oil as specified in Mainte-

nance on page 15.

Worn packings Install new packings.

Oil seals are leaking Install new oil seals.

Packings failing frequently or prema-

turely

Scored, damaged, or worn plungers Install new plungers.

Abrasive material in the fluid being

pumped

Install proper filtration on pump inlet

plumbing.

Inlet water temperature too high Check water temperature. It should

not exceed 140°F (60°C).

Over pressurized pump Do not modify any factory-set adjust-

ments. See Equipment Misuse Haz-

ard on page 6.

Excessive pressure due to partially

plugged or damaged nozzle

Clean or replace nozzle. See Nozzle

Connection on page 10.

Pump running too long without spray-

ing

Never run pump more than 10 min-

utes without spraying.

Running pump dry Do not run pump without water.

Strong surging at inlet, and low pres-

sure on discharge side

Foreign particles in the inlet or dis-

charge valve, or worn inlet and/or

discharge valves

Clean or replace valves.

Problem Cause Solution

Parts (Belt-Drive Models)

333031E 19

Parts (Belt-Drive Models)

Sprayer Parts

ti22926b

1

2

24

3

4

5

6

7

8

9

21

9a

10

14

15

16

27 25

28

26

17

18

19

20

22

12

23

11

13

Parts (Belt-Drive Models)

20 333031E

Sprayer Parts List

Ref. Part Description Qty.

1 114703 ENGINE, GX390 (Models

24U624, 24U625, 24U990,

24U991)

1

2Pump

127384 GP - TSS series or HP series

(Models 24U624, 24U990)

1

127382 CAT - 5CP series or 5PP series

(Models 24U625, 24U991)

1

3 127470 FRAME (Models 24U624,

24U625, 24U990, 24U991)

1

4 127466 HANDLE, long (Models 24U624,

24U625, 24U990, 24U991)

1

5 127467 HANDLE, short 1

6 16Y890 WHEEL/TIRE, 12 in.

(Models 24U624, 24U625,

24U990, 24U991)

1

7 244784 GUN (Models 24U624, 24U625,

24U990, 24U991)

1

8 244783 HOSE (Models 24U624, 24U625,

24U990, 24U991)

1

9 127526 UNLOADER 1

9a 17A644 UNLOADER, complete 1

10 127529 HOSE with chemical injector 1

11 LABEL, product

16X994 Model 24U624, 24U990 1

16X995 Model 24U625, 24U991 1

12LABEL, safety, gas tank

194126 Models 24U624, 24U625 1

16Y720 Models 24U990, 24U991 1

16Y721 Models 24U990, 24U991 1

13LABEL, safety, frame

16X819 Models 24U624, 24U625 1

16Y739 Models 24U990, 24U991 1

16C394 Models 24U990, 24U991 1

14 127539 BRACKET, foot (Models 24U624,

24U625, 24U990, 24U991)

1

15 127541 PAD, foot 1

16 127525 BELT GUARD, back 1

17 127521 BELT GUARD, cover 1

18 127542 FASTENERS, belt guard cover 1

20 127527 BELT 1

21 127558 GAUGE, quick disconnect

(Models 24U620, 24U621,

24U622, 24U623, 24U625,

24U986, 24U987, 24U988,

24U989, 24U990, 24U991)

1

127557 GAUGE, 22mm (Models 24U618,

24U985, 24U626, 24U619)

1

22 805543 NOZZLE, 0°, red, 4.0 1

805544 NOZZLE, 15°, yellow, 4.0 1

805545 NOZZLE, 25°, green, 4.0 1

805546 NOZZLE, 40°, white, 4.0 1

805634 NOZZLE, chemical, black 1

23 17A564 THERMAL VALVE 1

24 801112 STRAINER, inlet 1

25 127706 PULLEY, engine, 2.65 1

26 127705 PULLEY, pump, 6” 1

27 127703 BUSHING, engine 1

28 BUSHING, pump

127704 BUSHING, pump, 24mm, models

24U624, 24U990

1

127707 BUSHING, pump, 20 mm, models

24U625, 24U991

1

 Extra Safety & Warning tags & labels available free.

Ref. Part Description Qty.

Parts (Belt-Drive Models)

333031E 21

Pump 127382

(Used in models 24U991, 24U625)

Parts List - Pump 127382

ti22825a

Crankcase oil capacity 17 oz (0.51 L)

Part Description Qty.

127498KIT, repair valve (includes 163, 164,

166, 167, 168, 172, 173)

1

127499KIT, oil seal (includes 98, 106, 121,

127, 128)

1

127500KIT, piston (includes 90) 1

246377 PUMP OIL, 32 oz 1

17A564 THERMAL VALVE, (139) 1

 3 valves per kit

 Kit services 1 cylinder

† Not all repair parts available through Graco.

Part Description Qty.

Parts (Belt-Drive Models)

22 333031E

Pump 127384

(Used in models 24U990, 24U624)

Parts List - Pump 127384

127384- TSS1511-pump-

2

ti22828a

ti22828a

Crankcase oil capacity 40.6 oz (1.2 L)

Part Description Qty.

127489KIT, repair valve (includes 11) 6

127490KIT, valve cap (includes 9, 10) 6

127491KIT, oil seal (includes 16) 3

127492KIT, packing (includes 44, 47, 56) 3

127493KIT, piston (includes 35) 1

17A564 THERMAL VALVE 1

246377 PUMP, oil, 32 oz 1

 Kit will service 3 cylinders

 Kit will service 1 cylinder

† Not all repair parts available through Graco.

Part Description Qty.

Parts (Direct-Drive Models)

333031E 23

Parts (Direct-Drive Models)

Sprayer Parts

1

23

4

5

6

7

8

9

9a

22

24

21

23

10 12

14

15

19

11

13

ti22925b

Parts (Direct-Drive Models)

24 333031E

Sprayer Parts List

Ref. Part Description Qty.

1ENGINE

16Y886 GC160 (Model 24U618) 1

16Y887 GC190 (Model 24U626) 1

116298 GX200 (Models 24U619, 24U620, 24U895,

24U896)

1

803900 GX270 (Models 24U621, 24U987) 1

114703 GX390 (Models 24U622, 24U623, 24U998,

24U989)

1

2PUMP

127420 AR/Alum

(Models 24U626, 24U618)

1

127419 AR/Brass

(Models 24U619, 24U985)

1

127417 GP - TP series

(Models 24U620, 24U986)

1

127418 GP - EP series

(Models 24U621, 24U987)

1

127385 GP - EZ series

(Models 24U622, 24U988)

1

127383 CAT - 66DX series or 66PPX series

(Models 24U623, 24U989)

1

3FRAME

127471 Models 24U626, 24U619, 24U819, 24U985 1

127523 Models 24U620, 24U986 1

127468 Models 24U621, 24U622, 24U623,

24U987, 24U988, 24U989

1

4 HANDLE, long

127522 Models 24U626, 24U619, 24U618, 24U985 1

127466 Models 24U620, 24U621, 24U622,

24U623, 24U987, 24U988, 24U989

1

5 127467 HANDLE, short 1

6 WHEEL/TIRE

16Y888 10 in. (Models 24U626, 24U618, 24U619,

24U985)

1

16Y889 11 in. (Models 24U620, 24U621, 24U622,

24U623, 24U986, 24U987, 24U988,

24U989)

1

7GUN

127469 Models 24U626, 24U618, 24U619, 24U985 1

244784 Models 24U620, 24U621, 24U622,

24U623, 24U986, 24U987, 24U988,

24U989

1

8HOSE

16E286 3/8 x 25 w/22mm

(Models 24U626, 24U618)

1

127534 3/8 x 50 w/22mm

(Models 24U619, 24U985)

1

244783 3/8 x 50 w/QD (Models 24U620, 24U621,

24U622, 24U623, 24U986, 24U987,

24U988, 24U989)

1

9 127526 UNLOADER 1

9a UNLOADER, complete 1

17A641 Models 24U621, 24U622, 24U987, 24U988 1

17A642 Models 24U623, 24U989 1

17A644 Models 24U624, 24U625, 24U990, 24U991 1

10 127528 HOSE with chemical injector

(Models 24U618, 24U619, 24U620,

24U626, 24U985, 24U986)

1

10a 127529 HOSE with chemical injector

(Models 24U621, 24U622, 24U623,

24U987, 24U988, 24U989)

1

11 LABEL, product

16X987 Models 24U626, 24U618 1

16X988 Models 24U619, 24U985 1

16X989 Models 24U620, 24U986 1

16X990 Models 24U621, 24U987 1

16X992 Models 24U622, 24U988 1

16X993 Models 24U623, 24U989 1

12LABEL, safety, gas tank

194126 Models 24U626, 254U619, 24U620,

24U621, 24U622, 24U623

1

16Y720 Models 24U618, 24U985, 24U986,

24U987, 24U988, 24U989

1

16Y721 Models 24U618, 24U985, 24U986,

24U987, 24U988, 24U989

1

13LABEL, safety, frame

16X819 Models 24U626, 24U619, 24U620,

24U621, 24U622, 24U623

1

16Y739 Models 24U618, 24U985, 24U986,

24U987, 24U988, 24U989

1

14 BRACKET, foot

127537 Models 24U626, 24U619, 24U618, 24U985 1

127538 Models 24U620, 24U621, 24U622,

24U623, 24U986, 24U987, 24U988,

24U989

1

15 127541 PAD, foot 1

21 127558 GAUGE, quick disconnect

(Models 24U620, 24U621, 24U622,

24U623, 24U625, 24U986, 24U987,

24U988, 24U989, 24U990, 24U991)

1

127557 GAUGE, 22mm (Models 24U618, 24U985,

24U626, 24U619)

1

22 805535 NOZZLE, 0°, red, 3.0 (Models 24U626,

24U618, 24U619, 24U985)

1

805536 NOZZLE, 15°, yellow, 3.0 (Models 24U626,

24U618, 24U619, 24U985)

1

805537 NOZZLE, 25°, green, 3.0 (Models 24U626,

24U618, 24U619, 24U985)

1

805538 NOZZLE, 40°, white, 3.0 (Models 24U626,

24U618, 24U619, 24U985)

1

805634 NOZZLE, chemical, black (all models) 1

805539 NOZZLE, 0°, red, 3.5 (Models 24U620,

24U621, 24U986, 24U987)

1

805540 NOZZLE, 15°, yellow, 3.5 (Models 24U620,

24U621, 24U986, 24U987)

1

805541 NOZZLE, 25°, green, 3.5 (Models 24U620,

24U621, 24U986, 24U987)

1

805542 NOZZLE, 40°, white, 3.5 (Models 24U620,

24U621, 24U986, 24U987)

1

805543 NOZZLE, 0°, red, 4.0 (Models 24U622,

24U623, 24U988, 24U989)

1

805544 NOZZLE, 15°, yellow, 4.0 (Models 24U622,

24U623, 24U988, 24U989)

1

805545 NOZZLE, 25°, green, 4.0 (Models 24U622,

24U623, 24U988, 24U989)

1

805546 NOZZLE, 40°, white, 4.0 (Models 24U622,

24U623, 24U988, 24U989)

1

23 THERMAL VALVE 1

17A562 THERMAL VALVE, Models 24U626,

24U618, 24U619, 24U985

1

17A563 THERMAL VALVE, Models 24U620,

24U986

1

17A564 THERMAL VALVE, Models

24U621-24U623, 24U987-24U989

1

24 801112 INLET, strainer 1

 Extra Safety & Warning tags & labels available free.

Ref. Part Description Qty.

Parts (Direct-Drive Models)

333031E 25

Pump 127383

(Used in 24U989, 24U623)

Parts List - Pump 127383

ti22833a

Crankcase oil capacity 18 oz (0.55 L)

Part Description Qty.

127494KIT, repair valve (includes 163, 164, 166, 167, 168, 172) 1

127495KIT, oil seal (includes 98, 106, 121, 127, 128) 1

127496KIT, piston (includes 90) 1

246377 PUMP, oil, 32 oz 1

17A564 THERMAL VALVE 1

 3 valves per kit

 Kit will service 3 cylinders

 Kit will service 1 cylinder

† Not all repair parts available through Graco.

Parts (Direct-Drive Models)

26 333031E

Pump 127417

(Used in 24U620, 24U986)

ti22830a

Parts List - Pump 127417

Part Description Qty.

127481KIT, repair valve (includes 10, 11, 12, 13, 14, 17) 6

127482KIT, oil seal (includes 5) 3

127483KIT, packing (includes 18, 19, 20, 21, 22, 28) 1

127484KIT, piston (includes 28) 1

246377 PUMP, oil, 32 oz 1

17A563 THERMAL VALVE 1

Kit will service 3 cylinders

Kit will service 1 cylinder

† Not all repair parts available through Graco.

Crankcase oil capacity 11 oz (0.32 L)

Parts (Direct-Drive Models)

333031E 27

Pump 127385

(Used in 24U988, 24U622)

Parts List - Pump 127385

ti22829a

Crankcase oil capacity 14 oz (0.41 L)

Part Description Qty.

127481KIT, repair valve (includes 11) 6

127485KIT, valve cap (includes 9, 10) 6

127486KIT, oil seal (includes 17) 3

127487KIT, packing (includes 43, 44, 51) 3

127488KIT, piston (includes 33) 1

246377 PUMP, oil, 32 oz 1

17A564 THERMAL VALVE 1

 Kit services 3 cylinders

Kit services 1 cylinder

† Not all repair parts available through Graco.

Part Description Qty.

Parts (Direct-Drive Models)

28 333031E

Pump 127420

(Used in 24U618, 24U626)

Parts List - Pump 127420

127420

ti23775a

Crankcase oil capacity 2.2 oz (65.06 cc)

Aluminum ti23775a

Part Description Qty.

127501 KIT, unloader (includes 9, 11-24) 1

127503KIT, valves (includes 10) 6

127504KIT, water seals (includes 25) 3

127506 KIT, chemical injector (includes 33, 35,

36)

1

127519KIT, oil seals (includes 29, 57) 3, 1

117784 PUMP, oil, 4.5 oz 1

17A562 THERMAL VALVE 1

 Kit services 3 cylinders

† Not all repair parts available through Graco.

Part Description Qty.

Parts (Direct-Drive Models)

333031E 29

Pump 127419

(Used in 24U619, 24U985)

Parts List - Pump 127419

ti22832a

Crankcase oil capacity 2.2 oz. (65.06 cc)

Brass

Part Description Qty.

127501 KIT, unloader (includes 9, 11-24) 1

127502KIT, valves (includes 10) 6

127505KIT, water seals (includes 25) 6

127506 KIT, chemical injector (includes 33-36) 1

127519KIT, oil seals (includes 29, 57) 3, 1

117784 PUMP, oil, 4.5 oz 1

17A562 THERMAL VALVE 1

 Kit services 3 cylinders

† Not all repair parts available through Graco.

Part Description Qty.

Parts (Direct-Drive Models)

30 333031E

Pump 127418

(Used in 24U987, 24U621)

Parts List - Pump 127418

ti22831a

Crankcase oil capacity 15 oz (0.44 L)

Part Description Qty.

127476KIT, repair valve (includes 7, 18) 6

127477KIT, valve cap (includes 8, 9, 19, 20) 6

127478KIT, oil seal (includes 38) 3

127479KIT, packing (includes 22, 23, 24,25, 26, 28, 29) 1

127480KIT, piston (includes 12) 1

246377 PUMP, oil, 32 oz 1

17A564 THERMAL VALVE 1

 Kit services 3 cylinders

 Kit services 1 cylinder

Technical Data

333031E 31

Technical Data

2525DD Models (24U618, 24U626)

U.S. Metric

Washer

Maximum Working Pressure 2500 psi 17.2 MPa, 172bar

Honda Engine Size GC190 GC160

Gas Tank Capacity 1.82 quarts 1.7 liters

Maximum Delivery 2.5 gpm 9.5 lpm

Drive Direct Direct

Hose 3/8 in. x 25 ft

(4000 psi)

9.5 mm x 7.6 m

(27.6 MPa, 276 bar)

Dimensions

Length 30.0 in. 76.2 cm

Width 21.5 in. 54.6 cm

Height 23.75 in. 60.3 cm

Weight (bare) 58 lb 26.3 kg

Pump Inlet 3/4 ghf 3/4 ghf

Pump Outlet 22 mm 22 mm

Inlet Filter 50 mesh 0.012 in. 50 mesh 0.012 in.

Operating Temperature Range 40° F - 140° F 4.4° C - 60° C

Sound Pressure 92.5 dB(A) 92.5 dB(A)

Sound Power 109 dB(A) 106 dB(A)

2532DD Models (24U619, 24U985)

U.S. Metric

Washer

Maximum Working Pressure 3200 psi 22 MPa, 220 bar

Honda Engine Size GX200 GX200

Gas Tank Capacity 3.8 quarts 3.6 liters

Maximum Delivery 2.5 gpm 9.5 lpm

Drive Direct Direct

Hose 3/8 in. x 50 ft

(4000 psi)

9.5 mm x 15.2 m

(27.6 MPa, 276 bar)

Dimensions

Length 30.0 in. 76.2 cm

Width 21.5 in. 54.6 cm

Height 23.75 in. 60.3 cm

Weight (bare) 67 lb 30.3 kg

Pump Inlet 3/4 ghf 3/4 ghf

Pump Outlet 3/8 QC 3/8 QC

Inlet Filter 50 mesh 0.012 in. 50 mesh 0.012 in.

Operating Temperature Range 40° F - 145° F 4° C - 63° C

Sound Pressure 89.6 dB(A) 89.6 dB(A)

Sound Power 103.6 dB(A) 103.6 dB(A)

Technical Data

32 333031E

3027DD Models (24U620, 24U986)

U.S. Metric

Washer

Maximum Working Pressure 2700 psi 18.6 MPa, 186 bar

Honda Engine Size GX200 GX200

Gas Tank Capacity 3.8 quarts 3.6 liters

Maximum Delivery 3 gpm 11.4 lpm

Drive Direct Direct

Hose 3/8 in. x 50 ft

(4000 psi)

9.5mm x 15.2 m

(27.6 MPa, 276 bar)

Dimensions

Length 41.5 in. 105.4 cm

Width 23.5 in. 59.7 cm

Height 25.0 in. 63.5 cm

Weight (bare) 82 lb 37.2 kg

Pump Inlet 3/4 ghf 3/4 ghf

Pump Outlet 3/8 QC 3/8 QC

Inlet Filter 50 mesh 0.012 in. 50 mesh 0.012 in.

Operating Temperature Range 40° F - 145° F 4° C - 63° C

Sound Pressure 89.6 dB(A) 89.6 dB(A)

Sound Power 103.6 dB(A) 103.6 dB(A)

3032DD Models (24U987, 24U621)

U.S. Metric

Washer

Maximum Working Pressure 3200 psi 22 MPa, 220 bar

Honda Engine Size GX270 GX270

Gas Tank Capacity 6.2 quarts 5.9 liters

Maximum Delivery 3 gpm 11.4 lpm

Drive Direct Direct

Hose 3/8 in. x 50 ft

(4000 psi)

9.5 mm x 15.2 m

(27.6 MPa, 276 bar)

Dimensions

Length 41.5 in. 105.4 cm

Width 23.5 in. 59.7 cm

Height 25.0 in. 63.5 cm

Weight (bare) 113 lb 51.2 kg

Pump Inlet 3/4 ghf 3/4 ghf

Pump Outlet 3/8 QC 3/8 QC

Inlet Filter 50 mesh 0.012 in. 50 mesh 0.012 in.

Operating Temperature Range 40° F - 145° F 4° C - 63° C

Sound Pressure 93.1 dB(A) 93.1 dB(A)

Sound Power 107.2 dB(A) 107.2 dB(A)

Technical Data

333031E 33

4040DD Models (24U988, 24U622)

U.S. Metric

Washer

Maximum Working Pressure 4000 psi 27.6 MPa, 276 bar

Honda Engine Size GX390 GX390

Gas Tank Capacity 6.9 quarts 6.5 liters

Maximum Delivery 4 gpm 15.1 lpm

Drive Direct Direct

Hose 3/8 in. x 50 ft

(4000 psi)

9.5 mm x 15.2 m

(27.6 MPa, 276 bar)

Dimensions

Length 41.5 in. 105.4 cm

Width 23.5 in. 59.7 cm

Height 25.0 in. 63.5 cm

Weight (bare) 129 lb 58.5 kg

Pump Inlet 3/4 ghf 3/4 ghf

Pump Outlet 3/8 QC 3/8 QC

Inlet Filter 50 mesh 0.012 in. 50 mesh 0.012 in.

Operating Temperature Range 40° F - 145° F 4° C - 63° C

Sound Pressure 92.2 dB(A) 92.2 dB(A)

Sound Power 106.4 dB(A) 106.4 dB(A)

4040DDC Models (24U989, 24U623)

U.S. Metric

Washer

Maximum Working Pressure 4000 psi 27.6 MPa, 276 bar

Honda Engine Size GX390 GX390

Gas Tank Capacity 6.9 quarts 6.5 liters

Maximum Delivery 4 gpm 15.1 lpm

Drive Direct Direct

Hose 3/8 in. x 50 ft

(4000 psi)

9.5 mm x 15.2 m

(27.6 MPa, 276 bar)

Dimensions

Length 41.5 in. 105.4 cm

Width 23.5 in. 59.7 cm

Height 25.0 in. 63.5 cm

Weight (bare) 133 lb 60.3 kg

Pump Inlet 3/4 ghf 3/4 ghf

Pump Outlet 3/8 QC 3/8 QC

Inlet Filter 50 mesh 0.012 in. 50 mesh 0.012 in.

Operating Temperature Range 40° F - 145° F 4° C - 63° C

Sound Pressure 92.2 dB(A) 92.2 dB(A)

Sound Power 106.4 dB(A) 106.4 dB(A)

Technical Data

34 333031E

4040BD Models (24U990, 24U624)

U.S. Metric

Washer

Maximum Working Pressure 4000 psi 27.6 MPa, 276 bar

Honda Engine Size GX390 GX390

Gas Tank Capacity 6.9 quarts 6.5 liters

Maximum Delivery 4 gpm 15.1 lpm

Drive Belt Belt

Hose 3/8 in. x 50 ft

(4000 psi)

9.5 mm x 15.2 m

(27.6 MPa, 276 bar)

Dimensions

Length 42.0 in. 106.7 cm

Width 27.0 in. 68.6 cm

Height 26.0 in. 66 cm

Weight (bare) 159 lb 72.1 kg

Pump Inlet 3/4 ghf 3/4 ghf

Pump Outlet 3/8 QC 3/8 QC

Inlet Filter 50 mesh 0.012 in. 50 mesh 0.012 in.

Operating Temperature Range 40° F - 145° F 4° C - 63° C

Sound Pressure 92.2 dB(A) 92.2 dB(A)

Sound Power 106.4 dB(A) 106.4 dB(A)

4040BDC Models (24U991, 24U625)

U.S. Metric

Washer

Maximum Working Pressure 4000 psi 27.6 MPa, 276 bar

Honda Engine Size GX390 GX390

Gas Tank Capacity 6.9 quarts 6.5 liters

Maximum Delivery 4 gpm 15.1 lpm

Drive Belt Belt

Hose 3/8 in. x 50 ft

(4000 psi)

9.5 mm x 15.2 m

(27.6 MPa, 276 bar)

Dimensions

Length 42.0 in. 106.7 cm

Width 27.0 in. 68.6 cm

Height 26.0 in. 66 cm

Weight (bare) 158 lb 71.6 kg

Pump Inlet 3/4 ghf 3/4 ghf

Pump Outlet 3/8 QC 3/8 QC

Inlet Filter 50 mesh 0.012 in. 50 mesh 0.012 in.

Operating Temperature Range 40° F - 145° F 4° C - 63° C

Sound Pressure 92.2 dB(A) 92.2 dB(A)

Sound Power 106.4 dB(A) 106.4 dB(A)

Notes

333031E 35

Notes

All written and visual data contained in this document reflects the latest product information available at the time of publication.

Graco reserves the right to make changes at any time without notice.

For patent information, see www.graco.com/patents

Original instructions. This manual contains English. MM 333031

Graco Headquarters: Minneapolis

International Offices: Belgium, China, Japan, Korea

GRACO INC. AND SUBSIDIARIES • P.O. BOX 1441 • MINNEAPOLIS MN 55440-1441 • USA

Copyright 2014, Graco Inc. All Graco manufacturing locations are registered to ISO 9001.

www.graco.com

Revision E- May 2014

Graco Standard Warranty

Graco warrants all equipment referenced in this document which is manufactured by Graco and bearing its name to be free from defects in

material and workmanship on the date of sale to the original purchaser for use. With the exception of any special, extended, or limited warranty

published by Graco, Graco will, for a period of twelve months from the date of sale, repair or replace any part of the equipment determined by

Graco to be defective. This warranty applies only when the equipment is installed, operated and maintained in accordance with Graco’s written

recommendations.

This warranty does not cover, and Graco shall not be liable for general wear and tear, or any malfunction, damage or wear caused by faulty

installation, misapplication, abrasion, corrosion, inadequate or improper maintenance, negligence, accident, tampering, or substitution of

non-Graco component parts. Nor shall Graco be liable for malfunction, damage or wear caused by the incompatibility of Graco equipment with

structures, accessories, equipment or materials not supplied by Graco, or the improper design, manufacture, installation, operation or

maintenance of structures, accessories, equipment or materials not supplied by Graco.

This warranty is conditioned upon the prepaid return of the equipment claimed to be defective to an authorized Graco distributor for verification of

the claimed defect. If the claimed defect is verified, Graco will repair or replace free of charge any defective parts. The equipment will be returned

to the original purchaser transportation prepaid. If inspection of the equipment does not disclose any defect in material or workmanship, repairs

will be made at a reasonable charge, which charges may include the costs of parts, labor, and transportation.

THIS WARRANTY IS EXCLUSIVE, AND IS IN LIEU OF ANY OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT

LIMITED TO WARRANTY OF MERCHANTABILITY OR WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE.

Graco’s sole obligation and buyer’s sole remedy for any breach of warranty shall be as set forth above. The buyer agrees that no other remedy

(including, but not limited to, incidental or consequential damages for lost profits, lost sales, injury to person or property, or any other incidental or

consequential loss) shall be available. Any action for breach of warranty must be brought within two (2) years of the date of sale.

GRACO MAKES NO WARRANTY, AND DISCLAIMS ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A

PARTICULAR PURPOSE, IN CONNECTION WITH ACCESSORIES, EQUIPMENT, MATERIALS OR COMPONENTS SOLD BUT NOT

MANUFACTURED BY GRACO. These items sold, but not manufactured by Graco (such as electric motors, switches, hose, etc.), are subject to

the warranty, if any, of their manufacturer. Graco will provide purchaser with reasonable assistance in making any claim for breach of these

warranties.

In no event will Graco be liable for indirect, incidental, special or consequential damages resulting from Graco supplying equipment hereunder, or

the furnishing, performance, or use of any products or other goods sold hereto, whether due to a breach of contract, breach of warranty, the

negligence of Graco, or otherwise.

FOR GRACO CANADA CUSTOMERS

The Parties acknowledge that they have required that the present document, as well as all documents, notices and legal proceedings entered into,

given or instituted pursuant hereto or relating directly or indirectly hereto, be drawn up in English. Les parties reconnaissent avoir convenu que la

rédaction du présente document sera en Anglais, ainsi que tous documents, avis et procédures judiciaires exécutés, donnés ou intentés, à la suite

de ou en rapport, directement ou indirectement, avec les procédures concernées.

Graco Information

For the latest information about Graco products, visit www.graco.com.

For patent information, see www.graco.com/patents.

TO PLACE AN ORDER, contact your Graco distributor or call 1-800-690-2894 to identify the nearest distributor.