Hitachi CS 33EDT Service Manual page 14

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