Mac allister MAC 3.5PWA, 020271-0 Operator's Manual

Model No. 020271-0 (1800 PSI Pressure Washer) Manual No. 199291GS Revision 1 (2/20/2006)

Upright Pressure Washer

Operator’s Manual

Questions? Help is just a moment away!

Call your technical helpline at 0845 300 2577.

Before using this product, read this manual and

follow all Safety Rules and Operating Instructions.

WARNING

2

SAVE THESE INSTRUCTIONS

CONTENTS

I - Product Specifications . . . . . . . . . . . . . . . . . . . . .2

II - Safety Rules . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

III - Know Your Pressure Washer . . . . . . . . . . . . . .5

IV - Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

V - Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

VI - Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . .11

VII - Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

VIII - Troubleshooting . . . . . . . . . . . . . . . . . . . . . .14

IX - CE Declaration and Warranty . . . . . . . . . . . . .15

I - PRODUCT

SPECIFICATIONS

Outlet Pressure . . . . . . . . . . . . . 125 bar (1800 psi)

Flow Rate . . . . . . . . . 7.5 liters per minute (2.0 gpm)

Detergent . . . . . . . . . . . . . .Use detergent approved

for pressure washers

Water Supply . . . . . . . Not to Exceed 37ºC (100°F)

Temperature

Automatic Cool . . . . Will cycle when water reaches

Down System 51-68°C (125°-155°F)

Measured LwA . . . . . . . . . . . . . . . . . .100 dB(A)/pW

Guaranteed LwA . . . . . . . . . . . . . . . .100 dB(A)/pW

Sound Pressure Level @ 7m . . . . . . . . . .75 dB(A)

Shipping Weight . . . . . . . . . . . . . . .24.5 kg (54 lbs.)

Equipment Description

Read this manual carefully and become
familiar with your pressure washer. Know its
applications, its limitations and any hazards
involved.

Thank you for purchasing this Mac Allister product.
We are confident that this product will meet and
exceed your expectations for quality and reliability.
Please take the time to carefully read this entire
manual before using your new pressure washer and
take note of the safety precautions contained herein
and marked on the product.

This manual contains information for a pressure
washer that operates at 124 BAR at a flow rate of
450 liters per hour. This high quality residential
system features 12.7 CM (5 IN) wheels, an axial
cam pump with stainless steel pistons, an automatic
cool down system, a chemical injection system, and
an adjustable spray nozzle. Includes safety goggles,
heavy duty 7.2 M (25 FT) hose, and more.

II - SAFETY RULES

This is the safety alert symbol. It is used to
alert you to potential personal injury
hazards. Obey all safety messages that
follow this symbol to avoid possible injury
or death.

The safety alert symbol ( ) may be used with a
signal word (WARNING, CAUTION), a pictorial or a
safety message to alert you to hazards. WARNING
indicates a hazard which, if not avoided, could result
in death or serious injury. CAUTION indicates a
hazard which, if not avoided, might result in minor or
moderate injury. CAUTION, when used without the
alert symbol, indicates a situation that could result in
equipment damage. Follow safety messages to
avoid the hazard or reduce the risk of injury or
death.

Hazard Symbols and Meanings

Electrical Shock

Explosion

Fall

Fire

Fluid Injection

Flying Objects

Hot Surface

Kickback

Moving Parts

Read Operator’s Manual

Slippery Surface

Toxic Fumes

3

WARNING

Running engine gives off carbon
monoxide, an odorless, colorless, poison
gas.

Breathing carbon monoxide can cause
nausea, fainting or death.

Some chemicals or detergents may be
harmful if inhaled or ingested, causing
severe nausea, fainting or poisoning.

• Operate pressure washer ONLY outdoors.

• Keep exhaust gas from entering a confined area

through windows, doors, ventilation intakes or other
openings.

• Do not operate pressure washer inside any building or

enclosure, even if doors or windows are open.

• Use a respirator or mask whenever there is a chance

that vapors may be inhaled.

• Read all instructions with mask so you are certain the

mask will provide the necessary protection against
inhaling harmful vapors.

Use of pressure washer 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 20 to 60 CM (8 to 24 IN)

away from cleaning surface.

• Operate this unit on a stable surface.

• The cleaning area should have adequate slopes and

drainage to reduce the possibility of a fall due to slippery
surfaces.

• Be extremely careful if you must use the pressure

washer from a ladder, scaffolding or any other relatively
unstable location.

• Firmly grasp spray gun with both hands when using high

pressure spray to avoid injury when gun kicks back.

Rapid retraction of starter cord (kickback)
will pull hand and arm toward engine
faster than you can let go.

Broken bones, fractures, bruises or
sprains could result.

• ALWAYS point gun in safe direction and squeeze spray

gun trigger, to release pressure and avoid kickback
each time, before starting engine. Engage trigger lock
when not in use.

• 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 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 gun kicks back.

Petrol and its vapors are extremely
flammable and explosive.

Fire or explosion can cause severe burns
or death.

WHEN ADDING PETROL

• Turn pressure washer OFF and let it cool at least
2 minutes before removing gas cap.

• Fill petrol tank outdoors.

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

• Keep petrol away from sparks, open flames, pilot
lights, heat, and other ignition sources.

• DO NOT light a cigarette or smoke.

WHEN OPERATING EQUIPMENT

• DO NOT tip engine or equipment at angle which causes
petrol to spill.

• DO NOT spray flammable liquids.

WHEN TRANSPORTING OR REPAIRING
EQUIPMENT

• Transport/repair with petrol tank EMPTY or with petrol
shutoff valve OFF.

WHEN STORING PETROL OR EQUIPMENT WITH
PETROL 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 petrol
vapors.

Spray contact with electrical wiring can
result in electrocution.

• Keep water spray away from electric wiring or fatal
electric shock may result.

Running engines produce heat.
Temperature of muffler and nearby areas
can reach or exceed 65°C (150°F).

Severe burns can occur on contact.

Exhaust heat/gases can ignite
combustibles, structures or damage petrol
tank causing a fire.

• Do not touch hot surfaces and avoid hot exhaust gases.

• Allow equipment to cool before touching.

• Keep at least 1.5 M (5 FT) clearance on all sides of
pressure washer including overhead.

4

The high pressure stream of water that this
equipment produces can pierce skin and
its underlying tissues, leading to serious
injury and possible amputation.

Spray gun traps high water pressure, even
when engine is stopped and water is
disconnected, which can cause injury.

• NEVER aim spray gun at people, animals or plants.

• DO NOT allow CHILDREN to operate pressure washer.

• NEVER repair high pressure hose. Replace it.

• NEVER repair leaking connections with sealant of any
kind. Replace o-ring or seal.

• Keep high pressure hose connected to pump and spray
gun while system is pressurized.

• ALWAYS point gun in safe direction and squeeze spray
gun trigger, to release high pressure, every time you
stop engine. Engage trigger lock when not in use.

High pressure spray can cause paint chips
or other particles to become airborne.

• Always wear safety goggles when using this equipment
or in vicinity of where equipment is in use.

• Before starting the pressure washer, be sure you are
wearing adequate safety goggles.

Unintentional sparking can result
in fire or electric shock.

WHEN ADJUSTING OR MAKING REPAIRS TO
YOUR PRESSURE WASHER

• Disconnect spark plug wire from spark plug and place
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.

Starter and other rotating parts can
entangle hands, hair, clothing, or
accessories.

• 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.

CAUTION

Excessively high or low operating speeds
increase risk of injury and damage to
pressure washer.

• DO NOT tamper with governed speed.

• DO NOT operate pressure washer above rated
pressure.

A pressure washer produces a high pressure spray
which increases risk of injury and damage to unit.

• DO NOT secure spray gun in open position.

• DO NOT 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.

CAUTION

High pressure spray may damage fragile items
including glass.

• DO NOT point spray gun at glass when in jet spray
mode.

• NEVER aim spray gun at plants.
Improper treatment of pressure washer can damage it

and shorten its life.

• NEVER operate units with broken or missing parts, or
without protective housing or covers.

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

• Before starting pressure 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 handle
provided on unit.

• Check petrol 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 pressure washer.

• This equipment is designed to be used with authorized
parts only. If equipment is used with parts that DO NOT
comply with minimum specifications, user assumes all
risks and liabilities. Call the technical helpline at
0845 300 2577 for information.

5

III - KNOW YOUR PRESSURE WASHER

Read this operator’s manual and safety rules before operating your pressure washer.

Compare the illustrations with your pressure washer to familiarize yourself with the locations of various
controls and adjustments. Save this manual for future reference.

A - Oil Fill/Dipstick — Check and fill with oil here.
B - Water Inlet — Connection for garden hose.
C - High Pressure Outlet — Connection for high

pressure hose.
D - Pump — Develops high pressure. Equipped with

Automatic Cool Down System.
E - Primer Bulb — Prepares a cold engine for

starting.
F - Throttle Control Lever — Sets engine in

starting mode for recoil starter and stops a running
engine.

G - Air Filter — Protects engine by filtering dust and
debris out of intake air.

H - Recoil Starter — Used for starting the engine
manually.

Adjustable Nozzle (not shown) — Always attached
to nozzle extension. Adjustable nozzle allows you to
adjust spray pressure and spray pattern.

Automatic Cool Down System — Cycles water
through pump when water reaches 52°C-68°C
(125º-155°F). Warm water will discharge from pump
onto ground. This system prevents internal pump
damage.

Chemical Injection Siphon/Filter (not shown) —
Use to siphon detergent or other pressure washer
chemicals into the low pressure stream.

Data Tag (not shown, near rear of base plate) –
Provides model and serial number of pressure
washer. Please have these readily available if calling
for assistance.

High Pressure Hose (not shown) — Connect one
end to water pump and the other end to spray gun.

Spray Gun (not shown) — Controls the application
of water onto cleaning surface with trigger device.
Includes trigger lock.

F

C

D

A

H

E

G

B