HT 100, HT 101, HT 130, HT 131
English
31
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.
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.
Adjusting idle speed
Engine stops while idling
N Warm up the engine for about
3 minutes.
N Turn the idle speed screw (LA)
slowly clockwise until the engine
runs smoothly – the chain must not
rotate.
Chain rotates when engine is idling
N Turn the idle speed screw (LA)
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 machine
checked and repaired by your servicing
dealer.
Engine Management Adjusting the Carburetor
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