Sears 580.32601 - Manual (Page 24)

SPARK PLUGS
Replace both spark plugs every 100 operating hours, as follows:
1. Remove wires from spark plugs.
2. Use 13/16 inch spark plug wrench (or deep
socket) to remove both spark plugs. Turn
plugs counterclockwise to remove.
3. Use Champion RJ-8, Auto-Lite A-71, or AC
plug GC-46 replacement spark plugs. Set gap
on plug to 0.030 inch, using a wire spark plug
gauge.
4. Install both spark plugs with new gasket.
Tighten plugs hand tight until gasket con­
tacts spark plug seat firmly. Then use spark
plug wrench to tighten about ¥4 of a turn
more, (NOTE: -If torque wrench is available,
tighten spark plug to 200 Inch-Pounds.)
CLEAN FUEL TANK
About every 100 hours of operation or every 3
months (whichever comes first), clean the
fuel tank. Pour about a quart of clean gasoline
into tank, shake vigorously, then empty tank
completely. Move hose retainer sideways so
it will fit through tank filler opening, and
remove filler cap. Inspect fuel pickup screen
for clogging. Clean, if necessary.
INSPECT COOLING FINS
Grass particles, chaff, dirt or grease can clog
the cooling fins on the engine. Continued
operation with a clogged cooling system will
result in overheating and possible engine
damage. Illustration at right shows blower
housing removed and area to be cleaned, in­
spect cooling fins and clean, if necessary,
every 100 operating hours.
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