Cleaning The Air Filter; Engine Management; Adjusting The Carburetor - Stihl MS 460 Instruction Manual

Cleaning the Air Filter

If there is a noticeable loss of engine
power:
Knock the filter out on the palm of
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your hand or blow it clear with
compressed air from the inside
outwards.
In case of stubborn dirt or sticky filter
fabric
Wash the filter in STIHL special
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cleaner (special accessory) or a
clean, non-flammable solution (e.g.
warm soapy water). Rinse the filter
from the inside outwards under a jet
of water – do not use a pressure
washer.
Dry the filter components – do not
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expose to high temperatures.
Do not impregnate the filter with oil.
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Always replace a damaged filter.
Reinstall the air filter.
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MS 460

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.

Adjusting the Carburetor

Basic information
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 screw alters the
engine's power output and the maximum
off-load engine speed.
If you make the setting too lean it will
increase the risk of engine damage
through lack of lubrication and
overheating.
If it is necessary to readjust the
carburetor from scratch, first carry out
the standard setting.
The adjusting screws on this carburetor
can only be set within narrow limits.
Standard setting
Switch off engine
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Check the air filter – clean or replace
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it if necessary.
Check the spark arresting screen in
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the muffler (present only in some
countries) – clean or replace it if
necessary
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