Motor Management; Adjusting The Carburetor - Stihl MS 460 Manual De Instrucciones

Motor 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.
MS 460, MS 460 C

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.
With this carburetor it is only possible to
adjust the engine idle speed within fine
limits.
Standard setting
:
Shut off the engine.
:
Turn the high speed adjusting screw
(H) counterclockwise up to the stop,
3
i.e. / turn from max. lean setting.
4
: Turn the low speed adjusting screw
(L) one quarter of a turn
counterclockwise from max. lean
setting.
English / USA
Adjustment for operation at high
altitude or at sea level
A slight correction of the setting may be
necessary if engine power is not
satisfactory when operating at high
altitude or at sea level:
:
Check the air filter and clean it if
necessary.
:
Warm up the engine.
At high altitude
: Rotate the high speed adjusting
screw (H) clockwise (leaner) – no
further than stop.
At sea level
:
Rotate the high speed adjusting
screw (H) counterclockwise (richer)
no further than stop.
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