Generac Power Systems OneWASH Manuel utilisateur

*Built in the USA using domestic

and foreign parts

Operator’s Manual

OneWASH™ Power Washer

www.generac.com or 1-888-436-3722

WARNING!

California Proposition 65

Engine exhaust and some of its constituents are known to the state of California to cause cancer,

birth defects, and other reproductive harm.

WARNING!

California Proposition 65

This product contains or emits chemicals known to the state of California to cause cancer,

birth defects, and other reproductive harm.

iii

Table of Contents

Section 1 - Introduction............................................. 1

1.1 Introduction.......................................................... 1

Section 2 - Safety....................................................... 3

2.1 Safety Rules......................................................... 3

Section 3 - General Information................................ 7

3.1 Know Your Power Washer................................... 7

3.2 Product Specifications ......................................... 8

3.3 Emissions Information.......................................... 8

3.4 High Altitude Operation........................................ 8

3.5 Unpacking............................................................ 9

Section 4 - Set-up..................................................... 11

4.1 Assembly ........................................................... 11

4.2 Add Engine Oil................................................... 12

4.3 Add Fuel............................................................. 13

4.4 Connect Hose and Water Supply to Pump........ 13

4.5 How to Use Nozzles........................................... 15

Section 5 - Operation............................................... 19

5.1 Operation........................................................... 19

5.2 Power Washer Location..................................... 19

5.3 Checklist Before Starting Engine....................... 19

5.4 How to Start Your Power Washer...................... 19

5.5 Automatic Cool Down System

(Thermal Relief)................................................. 21

5.6 How to Stop Your Power Washer...................... 21

Section 6 - Maintenance.......................................... 23

6.1 Maintenance Recommendations ....................... 23

6.2 Maintenance Schedule ...................................... 23

6.3 Pump Oil............................................................ 24

6.4 Emissions Control.............................................. 24

6.5 Power Dial Settings ........................................... 24

6.6 Power Washer Maintenance.............................. 24

6.7 Check and Clean Inlet Screen........................... 24

6.8 Check High Pressure Hoses.............................. 24

6.9 Check Detergent Siphoning Tube...................... 24

6.10 Check Spray Gun .............................................. 24

6.11 Chemical Tank Maintenance............................. 24

6.12 Nozzle Maintenance.......................................... 25

6.13 Engine Maintenance.......................................... 26

6.14 Engine Oil Recommendations........................... 26

6.15 Service Air Cleaner............................................ 27

6.16 Service Spark Plug ............................................ 28

6.17 Inspect Muffler and Spark Arrester.................... 28

6.18 After Each Use................................................... 29

6.19 Winter Storage................................................... 29

6.20 Long Term Storage............................................ 29

6.21 Other Storage Instructions................................. 30

6.22 Transporting/Tipping of the Unit ........................ 30

Section 7 - Troubleshooting ................................... 31

7.1 Troubleshooting Guide ...................................... 31

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OneWASH™ Power Washer 1

1.1 — INTRODUCTION

Thank you for purchasing this power washer manufac-

tured by Generac Power Systems, Inc. This model is a

high performance, air-cooled, engine-driven power

washer that operates at 3100 psi.The units feature cus-

tom designed wheels, axial cam pump with stainless

steel pistons, automatic cool down system, quick connect

nozzles, high pressure hose, detergent siphoning hose

and chemical tank.

Common sense and strict compliance with the spe-

cial instructions are essential to preventing acci-

dents. The operator must read this manual and

thoroughly understand all of the instructions and warn-

ings before using the equipment. If any portion of the

manual is not understood, contact the nearest Authorized

Dealer for starting, operating and servicing procedures.

The owner is responsible for proper and safe use of the

equipment.

The power washer can operate safely, efficiently and reli-

ably only if it is properly located, operated and main-

tained. Before operating, servicing or storing:

• Study all warnings in this manual and on the product

carefully.

• Become familiar with this manual and the unit before

use.

• Refer to the Assembly section of the manual for

instructions on final assembly procedures. Follow the

instructions completely.

The manufacturer cannot anticipate every possible cir-

cumstance that might involve a hazard. The warnings in

this manual, and on tags and decals affixed to the unit

are, therefore, not allinclusive. If using a procedure, work

method or operating technique that the manufacturer

does not specifically recommend, ensure that it is safe for

others. Also make sure the procedure, work method or

operating technique utilized does not render the power

washer unsafe.

THE INFORMATION CONTAINED HEREIN WAS

BASED ON MACHINES IN PRODUCTION AT THE

TIME OF PUBLICATION. GENERAC RESERVES THE

RIGHT TO MODIFY THIS MANUAL AT ANY TIME.

Save these instructions for future reference. If you

loan this device to someone, always loan these

instructions and the Owner's Manual to the individ-

ual as well.

1.1.1 — Where to Find Us

You can contact Generac Customer Service by phone at

1-888-436-3722, or on the internet at www.generac.com.

Record the important information of the unit in the follow-

ing chart for future reference and/or service inquiries.

Model Number

Serial Number

Date Purchased

Section 1 Introduction

2OneWASH™ Power Washer

This page intentionally left blank.

Introduction

OneWASH™ Power Washer 3

2.1 — SAFETY RULES

Throughout this publication, and on tags and decals

affixed to the power washer, DANGER, WARNING, CAU-

TION and NOTE blocks are used to alert personnel to

special instructions about a particular operation that may

be hazardous if performed incorrectly or carelessly.

Observe them carefully. Their definitions are as follows:

Indicates a hazardous situation or action which, if

not avoided, will result in death or serious injury.

Indicates a hazardous situation or action which, if

not avoided, could result in death or serious injury.

Indicates a hazardous situation or action which, if

not avoided, could result in minor or moderate injury.

NOTE:

Notes contain additional information important to a

procedure and will be found within the regular text

body of this manual.

These safety warnings cannot eliminate the hazards that

they indicate. Common sense and strict compliance with

the special instructions while performing the action or

service are essential to preventing accidents.Safety

Symbols and Meanings.

2.1.1 — Exhaust Hazards

Carbon monoxide produced during use can

kill in minutes. NEVER use indoors, in a vehi-

cle, or in other sheltered areas, EVEN IF doors

and windows are open. Only use OUTSIDE

and far away from windows, doors and vents.

Some chemicals or detergents may be harm-

ful if inhaled or ingested, causing severe nau-

sea, fainting, or poisoning.

• Operate power washer ONLY outdoors.

• A running engine gives off carbon monoxide.

• Carbon monoxide is an odorless, colorless, poisonous

gas. Breathing carbon monoxide can cause headache,

fatigue, dizziness, vomiting, confusion, seizures, nau-

sea, fainting or death. If you start experiencing any of

these symptoms, IMMEDIATELY move to fresh air.

Seek medical attention.

KickbackToxic Fumes Electrical Shock

Fluid InjectionFall

Fire Explosion Operator’s Manual

Slippery Surface

Moving Parts Flying Objects Hot Surface

Hearing Protection

Section 2 Safety

Safety

4OneWASH™ Power Washer

• Keep exhaust gas from entering a confined area

through windows, doors, ventilation intakes, or other

openings. Warn any occupants inside about the symp-

toms of carbon monoxide so they know to move to

fresh air if they begin to feel ill.

• The use of a carbon monoxide detector inside any

occupied premises between the power washer and the

occupant is recommended.

• NEVER start or run engine indoors, in a vehicle, or in

an enclosed area, even if windows and doors are open.

• Use a respirator or mask whenever there is a chance

that harmful gas or vapors may be inhaled.

• Read all instructions with respirator or mask so you are

certain the respirator or mask will provide the neces-

sary protection against inhaling harmful gas or vapors.

If you begin to experience any of the CO symptoms

listed above, IMMEDIATELY move to fresh air.

2.1.2 — Fluid Injection Hazard

NEVER aim spray gun at people, animals, or

electrical devices. Serious injury or death will

result. ALWAYS point spray gun in safe direc-

tion, squeeze spray gun trigger to release

high pressure, every time you stop engine.

Engage trigger lock when not in use.

• The high pressure stream of water that this equipment

produces can cut through skin and its underlying tis-

sues, leading to serious injury, possible amputation or

death. Spray gun traps high water pressure, even

when engine is stopped and water is disconnected,

which can cause injury.

• NEVER allow CHILDREN to operate power washer or

play nearby. This is NOT a toy.

• NEVER repair high pressure hose. Replace it.

• NEVER repair leaking connections with sealant of any

kind. Replace o-ring or seal.

• NEVER connect high pressure hose to nozzle exten-

sion.

• Keep high pressure hose connected to pump and

spray gun while system is pressurized.

• NEVER secure spray gun in open position.

• NEVER leave spray gun unattended while machine is

running.

• NEVER use a spray gun which does not have a trigger

lock or trigger guard in place and in working order.

• Always be certain spray gun, nozzles and accessories

are correctly attached.

2.1.3 — Electrical Shock Hazard

Risk of electrocution.

Contact with power source can cause electric

shock or burn.

• NEVER spray near power source.

2.1.4 — Hot Surfaces Hazard

Contact with muffler area can result in

serious burns. Exhaust heat/gases can

ignite combustibles, structures or

damage fuel tank causing a fire.

• DO NOT touch hot parts and AVOID hot exhaust

gases.

• Allow equipment to cool before touching.

• Keep at least five (5) feet (152 cm) of clearance on all

sides of power washer including overhead.

• It is a violation of California Public Resource Code,

Section 4442, to use or operate the engine on any for-

est-covered, brush-covered, or grass-covered land

unless the exhaust system is equipped with a spark

arrester, as defined in Section 4442, maintained in

effective working order. Other states or federal jurisdic-

tions may have similar laws. Contact the original equip-

ment manufacturer, retailer, or dealer to obtain a spark

arrester designed for the exhaust system installed on

this engine.

• Replacement parts must be the same and installed in

the same position as the original parts.

Safety

OneWASH™ Power Washer 5

2.1.5 — Fire Hazards

Fuel and its vapors are extremely flam-

mable and explosive. Fire or explosion

can cause severe burns or death.

WHEN ADDING OR DRAINING FUEL

• Turn power washer OFF and let it cool at least two (2)

minutes before removing fuel cap. Loosen cap slowly

to relieve pressure in tank.

• Fill or drain fuel tank outdoors.

• DO NOT overfill tank. Allow space for fuel expansion.

• If fuel spills, wait until it evaporates before starting

engine.

• Keep fuel away from sparks, open flames, pilot lights,

heat, and other ignition sources.

• DO NOT light a cigarette or smoke.

WHEN STARTING EQUIPMENT

• Ensure spark plug, muffler, fuel cap, and air cleaner

are in place.

• DO NOT crank engine with spark plug removed.

WHEN OPERATING EQUIPMENT

• DO NOT tip engine or equipment at angle which

causes fuel to spill.

• DO NOT spray flammable liquids.

WHEN TRANSPORTING OR REPAIRING EQUIPMENT

• Transport/repair with fuel tank EMPTY.

• Disconnect spark plug wire.

WHEN STORING FUEL OR EQUIPMENT WITH FUEL

IN TANK

• Store away from furnaces, stoves, water heaters,

clothes dryers, or other appliances that have pilot light

or other ignition source because they can ignite fuel

vapors.

2.1.6 — Hearing Protection Hazard

Hearing Protection Recommended.

2.1.7 — Fall Hazard

Use of power washer can create pud-

dles and slippery surfaces. Kickback

from spray gun can cause you to fall.

• Use only on a level surface.

• The cleaning area should have adequate slopes and

drainage to reduce the possibility of a fall due to slip-

pery surfaces.

• Do not use on elevated surfaces where chance of kick-

back could result in a serious fall.

• Firmly grasp spray gun with both hands when using

high pressure spray to avoid injury when spray gun

kicks back.

2.1.8 — Moving Parts Hazard

Starter and other rotating parts can entangle

hands, hair, clothing, or accessories.

• NEVER operate power washer without protective

housing or covers.

• DO NOT wear loose clothing, jewelry or anything that

may be caught in the starter or other rotating parts.

• Tie up long hair and remove jewelry.

2.1.9 — Kickback Hazard

Starter cord kickback (rapid retraction) can

result in bodily injury. Kickback will pull hand

and arm toward engine faster than you can

let go. Broken bones, fractures, bruises, or

sprains could result.

• NEVER pull starter cord without first relieving spray

gun pressure.

• To relieve trapped pressure, point gun in safe direction

and release pressure by pulling/actuating trigger on

spray gun.

• When starting engine, pull cord slowly until resistance

is felt and then pull rapidly to avoid kickback.

• After each starting attempt, where engine fails to run,

always point spray gun in safe direction, and squeeze

spray gun trigger to release high pressure.

• Firmly grasp spray gun with both hands when using

high pressure spray to avoid injury when spray gun

kicks back.

Safety

6OneWASH™ Power Washer

2.1.10 — Spark Hazards

Unintentional sparking can result in

fire or electric shock.

WHEN ADJUSTING OR MAKING

REPAIRS TO YOUR Power washer.

• Disconnect the spark plug wire from the spark plug and

place the wire where it cannot contact spark plug.

WHEN TESTING FOR ENGINE SPARK

• Use approved spark plug tester.

• DO NOT check for spark with spark plug removed.

2.1.11 — Splash Hazards

Risk of eye injury. Spray can splash back or

propel objects.

• Always wear safety goggles when using this equip-

ment or in vicinity of where equipment is in use.

• Before starting the power washer, be sure you are

wearing adequate safety goggles.

• NEVER substitute safety glasses for safety goggles.

NOTE:

High pressure spray may damage fragile items

including glass.

• DO NOT point spray gun at glass when using red (0°)

MAX nozzle.

• NEVER aim spray gun at people, animals, electrical

devices or plants. NOTE:

Improper treatment of power washer can damage it

and shorten its life.

• If you have questions about intended use, ask dealer

or contact qualified service center.

• NEVER operate units with broken or missing parts, or

without protective housing or covers.

• DO NOT by-pass any safety device on this machine.

• DO NOT operate power washer above rated pressure.

• DO NOT modify power washer in any way.

• Before starting power washer in cold weather, check all

parts of the equipment to be sure ice has not formed

there.

• NEVER move machine by pulling on hoses. Use han-

dle provided on unit.

• Check fuel system for leaks or signs of deterioration,

such as chafed or spongy hose, loose or missing

clamps, or damaged tank or cap. Correct all defects

before operating power washer.

• This equipment is designed to be used with Generac

authorized parts ONLY. If equipment is used with parts

that DO NOT comply with minimum specifications, user

assumes all risks and liabilities.

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