Engine Management; Adjusting The Carburetor - Stihl HT 100 Manual De Instrucciones

Engine Management

Exhaust emissions are controlled by the
design of the fundamental engine
parameters and components (e.g.
carburation, ignition, timing and valve or
port timing) without the addition of any
major hardware.
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.
These power tools are equipped with
different carburetors:
Version A
H L
LA
High speed screw and low speed
–
screw with special head – without
slotted head.
On these machine versions it is no
longer necessary to adjust the
carburetor.
These machines have been set at the
factory to provide an optimum fuel-air
mixture in all locations and operating
conditions.
Adjusting Idle Speed
Engine stops while idling
H L
LA
Warm up the engine for about 3
N
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.
WARNING
If the chain continues moving when the
engine is idling, have your saw machine
and repaired by your servicing dealer.
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