Clean coounc system, Replace spark plug, Engine adjustments – Sears 580.75151 User Manual
Page 16: Initial adjustment, Final adjustment, Customer responsibilities, Service and adjustments
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CUSTOMER RESPONSIBILITIES
CLEAN COOUNC SYSTEM
* Clean dirt or chaff from finger guard or rotating screen
every 8 hours to prevent engine damage caused by
over ‘
згу 8 hours to prevent
ameating (Fig. 25).
Keep dirt and combustibie debris off of muffler area.
REPLACE SPARK PLUG
Change the spark plug every ICKJ hours of operation or
once each year, whichever oimes first. This will help
engine to start easier and run better. See pre^ure
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, altitude or toad may re
quire minor carburetor adjustment. Air cleaner and air
cleaner cover must be assembled to carburetor before
starting engine.
INITIAL ADJUSTMENT
» 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
wise.
permit the engine to be
® This initial adjustment will
started and warmed up.
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
ABOVE FACTORY HIGH SPEED SETTING CAM BE
DANGEROUS.
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