Adjusting The Carburetor - Stihl KM 130 R Instruction Manual

English

Adjusting the Carburetor

The carburetor comes from the factory
with a standard setting.
The carburetor has been adjusted for
optimum performance and fuel
efficiency in all operating states.
The high speed adjusting screw and low
speed adjusting screw on this carburetor
can only be set within narrow limits.
Standard position
N Switch off engine
N Mount KombiTool with attached
working or cutting tool
N
Check air filter - clean or replace it if
necessary
N Check throttle cable adjustment,
adjust if necessary – see "Adjusting
the throttle cable"
N Check spark arresting screen -
clean or replace it if necessary
16
N Carefully turn both adjusting screws
counterclockwise until they are
seated firmly:
– High speed screw (H) is 3/4 of a
turn open
– Low speed screw (L) is 3/4 of a turn
open.
N Start the machine and let the engine
warm up
N Using the idle speed screw (LA), set
the idle speed so that the working
tool does not move
Fine adjustment
A marginal adjustment of the setting of
the high speed screw (H) may be
necessary if the engine does not run
satisfactorily in mountain country, at sea
level or after changing working tools.
Approx. value
Turn the high speed screw (H) approx.
1/4 turn per 1000 m (3300 ft) difference
in elevation
N Carry out standard adjustment for
idle speed screw (L)
N Let the engine warm up for
approx. 3 min
N Open the throttle fully
In the mountains
N Turn the high speed screw (H)
clockwise (leaner) – until there is no
longer a noticeable increase in
speed – max. as far as possible
At sea level
N Turn the high speed screw (H)
counterclockwise (richer) – until
there is no longer a noticeable
increase in speed – max. as far as
possible
It is possible that the maximum speed is
already obtained at the standard setting.
Setting the idle speed
Whenever the low speed screw (L) has
been adjusted, it is usually also
necessary to adjust the idle speed
screw (LA).
N
Let the engine warm up for
approx. 3 min
Engine stops when idling
N Slowly turn idle speed screw (LA)
clockwise until the engine runs
smoothly – the working tool must
not move
KM 110 R, KM 130 R