-4-
Clogged cylinder exhaust port or carbon
clogging the muffler
Cleaning
Clogged air cleaner
Cleaning
The chain brake is on.
Release
Dirt clogging the carburetor high-speed
fuel line
Cleaning
Faulty carburetor pump diaphragm
Replacement
Air intake from the gasket portions
Inspection
Revolutions too low for idling
Adjustment
Revolutions too low for idling
Adjustment
Revolutions too low for idling
Adjustment
Revolutions too high for idling
Adjustment
Worn or faulty clutch
Inspection/replacement
High speed unavailable
Revolutions fluctuate
The engine stalls
Starts up, and when idling
mode is set …
Starts rotating
The saw chain starts rotating
during idling.
When the revolutions increase
…
OK
OK
OK
The engine stalls
When speed rapidly
decelerates from high speed…
The engine stalls
When the product is tilted
at idling…
OK
OK
Pulling the throttle lever
increases the speed.
OK
