Adjusting The Carburetor - Stihl MS 382 Instruction Manual

English
Always replace damaged filters.
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Installing the air filter
Reassemble the filter components
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and check that the choke shutter (8)
and torsion spring are properly
seated.
The end of the spring (9) must
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engage the slot (arrow).
Secure the main filter and prefiler in
N
position.
Fit the carburetor box cover.
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80

Adjusting the Carburetor

General Information
The carburetor comes from the factory
with a standard setting.
This setting provides an optimum fuel-air
mixture under most operating
conditions.
Standard Setting
Shut off the engine.
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Check the air filter and clean or
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replace if necessary.
Turn the high speed screw (H)
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clockwise as far as stop, then turn it
back 1 full turn.
Turn the low speed screw (L)
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clockwise as far as stop, then turn it
back 1 full turn.
Adjusting Idle Speed
Carry out standard setting.
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Start and warm up the engine.
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Engine stops while idling
Turn the idle speed screw (LA)
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clockwise until the chain begins to
run – then back it off 3/4 turn.
Saw chain runs while engine is idling
Turn the idle speed screw (LA)
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counterclockwise until the chain
stops moving – then turn it another
3/4 turn in the same direction.
WARNING
If the chain continues moving when the
engine is idling, have your saw checked
and repaired by your servicing dealer.
Erratic idling behavior, poor acceleration
(even though standard setting of low
speed screw is correct)
Idle setting is too lean
Turn the low speed screw (L) slowly
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counterclockwise until the engine
runs and accelerates smoothly.
It is usually necessary to change the
setting of the idle speed screw (LA) after
every correction to the low speed
screw (L).
MS 382