-8-
Situation Cause Measure
Starts, but …
Fluctuating
revolutions at high
speed
Dirt clogging the high-speed fuel
line
Cleaning
Excessive fuel
consumption
Clogged air cleaner
Chain oil is not discharged.
No oil in the tank Replenishment
Clogged oil filler port
Cleaning
Clogged oil filler port on the guide
bar
Clogged oil filter
Broken/bent oil pipe, faulty
connection
Repair
Cracked oil pipe Replacement
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