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6. MAINTENANCE
F15
F16
F17
■ FUEL FILTER (F15)
When the engine runs short of fuel
supply, check the fuel strainer for
blockage.
■
WAY OF THE COOLING AIR (F16)
This engine is air-cooled. Dust
clogging between the inlet port of the
cooling air and cylinder fins will
cause overheating of the engine.
Periodically check and clean the
cylinder fins after removing the air
cleaner and the cylinder cover.
■ SPARK PLUG (F17)
Starting failure and mis-firing are
often caused by a fouled spark plug.
Periodically clean the spark plug, and
replace with a new one as required.
When dismounting the plug cap, be
careful not to take off the seal from
the plug cap. Operating the engine
without seal may cause overheating
of the engine.
When setting up the spark plug,
screw it by your fingers at first, then
tighten by using special plug wrench.
Over tightening will damage the
cylinder and piston.
Tightening Torque:
15.3 ~ 22.4 N.m (150 ~ 220kgf-cm)
Type of Plug Spark Gap
Champion CMR7H 0.6 ~ 0.7 mm
■ GEARCASE (F18)
Supply multi-purpose grease at every
25 hours of use
.
1. Use a grease pump.
2. Feed grease until it comes out of
the base of blades.(F16-a)
IMPORTANT
IMPORTANT
F18