Sears 580.7515 - Manual (Page 16)

CUSTOMER RESPONSIBILITIES
AIR CLEANER
ELEMENT
FIG. 24
o Service cartridge by tapping gently on a flat surface.
Replace if dirty. Do not oil cartridge.
o Insert cartridge (new or used) and reassemble cover to
base as it was removed before. Tighten cover screws
securely.
CLEAN COOLING SYSTEM
o Clean dirt or chaff from finger guard or rotating screen
every 8 hours to prevent engine damage caused by
overheating (Fig. 25).
Keep dirt and combustible debris off of muffler area.
REPLACE SPARK PLUG
Change the spark plug every 100 hours of operation or
once each year, whichever comes first. This will help
engine to start easier and run better. See pressure washer
specifications for the type of spark plug you need. Spark
plug gap is 0.030 inch (0.76mm).
SERVICE AND ADJUSTMENTS
ENGINE ADJUSTMENTS
Carburetor:
Differences in fuel, temperature, attitude or load may re­
quire minor carburetor adjustment Air cleaner and air
cleaner cover must be assembled to carburetor before
starting engine.
INITIAL ADJUSTMENT
o Gently turn NEEDLE VALVE (Fig. 26) clockwise until it
just closes. Valve may be damaged by turning it inward
too far.
Next open NEEDLE VALVE 1-1/2 turns counterclock-
wfse.
FINAL ADJUSTMENT
» Start engine and let it warm up for at least five minutes.
o With engine running, turn NEEDLE VALVE inward
(clockwise - lean mixture) until engine just starts to
slow.
ENGINE SPEED
WARNING: NEVER TAMPER WITH ENGINE GOV­
ERNOR WHICH IS FACTORY SET FOR PROPER
ENGINE
SPEED. OVERSPEEDING ENGINE
ABOVE FACTORY HIGH SPEED SETTING CAN BE
DANGEROUS.
This initial adjustment will permit the engine to be
started and warmed up.
NOZZLE MAINTENANCE
If the nozzle becomes restricted or clogged with foreign
materials, such as dirt, excessive pump pressure may
develop, A partially clogged nozzle can cause a pulsing
sensation during use. This generally is not a pump related
problem, but rather a clogged or partially restricted nozzle.
If the nozzle becomes clogged or partially restricted, imme­
diately clean the nozzle with the kit included with your
pressure washer by following these instructions:
» Shut off the engine and turn off the water supply.
• Separate the wand from the gun.
» Remove nozzle from the end of the wand using a 2mm
or 5/64 alien wrench (like the one included in the kit).
» Use the wire included in the kit (Fig. 26 on Page 17) or
a small paper clip to free the foreign materials clogging
or restricting tfie nozzle .
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