Cleaning The Air Filter; Adjusting The Carburetor - Stihl HT 131 Instruction Manual

Cleaning the Air Filter

If there is a noticeable loss of engine
power
4
Turn the choke knob to g
N
Take out the screw (1) and remove
N
the filter cover (2).
Clean away loose dirt from around
N
the filter.
Grip the filter element (3) at the
N
cutout (arrow) in the filter
housing (4) and remove it.
Fit a new filter element. As a
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temporary measure you can knock it
out on the palm of your hand or blow
it out with compressed air. Do not
wash.
Replace damaged parts.
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Installing the filter
Install the filter element in the filter
N
housing and fit the cover.
Insert the screw and tighten it down
N
firmly.
HT 100, HT 101, HT 130, HT 131

Adjusting the Carburetor

The carburetor comes from the factory
with a standard setting.
This setting provides an optimum fuel-air
mixture under most operating
conditions.
With this carburetor it is only possible to
adjust the high speed screw within fine
limits.
1
Adjusting idle speed
2
Engine stops while idling
H L
Warm up the engine for about
N
3 minutes.
Turn the idle speed screw (LA)
N
slowly clockwise until the engine
runs smoothly – the chain must not
rotate.
Chain rotates when engine is idling
Turn the idle speed screw (LA)
N
counterclockwise until the chain
stops running and then turn the
screw about another 1/2 to 3/4 turn
in the same direction.
LA
WARNING
If the chain continues moving when the
engine is idling, have your machine
checked and repaired by your servicing
dealer.
English
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