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11 - ENG
A14687
BASIC ELEMENTS OF A
PRESSURE WASHER
High Pressure Pump (located inside
the shroud, not shown): Increases
the pressure of the water supply.
Engine: Drives the high pressure
pump.
High Pressure Hose: Carries the
pressurized water from the pump to
the gun and spray wand.
Spray Gun: Connects with spray
wand to control water flow rate,
direction, and pressure.
Gatling Spray Wand: Allows the
user to quickly change high-pressure
nozzles. See How To Use Spray Wand
instructions in this section.
Chemical Hose: Feeds cleaning
agents into the pump to mix with the
water. See How To Apply Chemicals/
Cleaning Solvents instructions in this
section.
BASIC ELEMENTS OF AN
ENGINE
Refer to the engine manual for location
and operation of engine controls.
Choke Control: Opens and closes
carburetor choke valve.
Starter Grip: Pulling starter grip
operates recoil starter to crank engine.
Engine Switch: Enables and disables
ignition system.pressure washer
terminology
PRESSURE WASHER
TERMINOLOGY
PSI: Pounds per Square Inch. The
unit of measure for water pressure.
Also used for air pressure, hydraulic
pressure, etc.
GPM: Gallons Per Minute. The unit of
measure for the fl ow rate of water.
CU: Cleaning Units. GPM multiplied
by PSI. GPM x PSI = CU
Bypass Mode: Allows water to
re-circulate within pump when the gun
trigger is not pulled.
Allowing the unit to
run for more than
two minutes without the gun trigger
pulled could cause overheating and
damage to the pump.
Chemical Injection System: Mixes
cleaners or cleaning solvents with
the water to improve cleaning
effectiveness.
Water Supply: All pressure washers
must have a source of water. The
minimum requirements for a water
supply are 20 PSI and 5 gallons per
minute.pressure washer operating
features
PRESSURE WASHER
OPERATING FEATURES
PRESSURE ADJUSTMENTS
The pressure setting is preset at the
factory to achieve op ti mum pres sure
and cleaning. If you need to lower the
pres sure, it can be accomplished by
these meth ods.
1. Back away from the sur face to
be cleaned. The further away you
are, the less the pressure will be
on the surface to be cleaned.
2. Change to the 40º nozzle - this
nozzle delivers a less powerful
stream of water and a wider spray
pattern.
DO NOT attempt
to increase pump
pressure. A higher pressure setting
than the factory set pressure may
damage pump.
TO USE SPRAY WAND
The nozzles for the spray wand are
stored in the gatling spray wand. See
chart to choose the correct nozzle for
the job to be performed.
CHANGING NOZZLES ON SPRAY
WAND
Risk of fl uid
injection. Do not
direct discharge stream toward
persons, unprotected skin, eyes or
any pets or animals. Serious injury
will occur.