Instruction Manual

GS 461
English
30
If there is a noticeable loss of engine
power:
N Dry wet air filter if necessary – do
not expose to extreme heat
N If the air filter is very dirty, clean the
filter thoroughly
Thorough filter cleaning
N Wash the air filter in STIHL special-
purpose cleaner (special
accessory) or a clean, non-
flammable cleaning liquid (e. g.,
warm soapy water) – rinse the air
filter from inside to out under a water
flow – do not use high-pressure
washers
N Dry the air filter – do not expose to
extreme heat, do not dry with
compressed air
N Do not oil the air filter
N Reinstall air filter
Always replace a damaged air filter.
Exhaust emissions are controlled by the
design of the engine and components
(e.g. carburation, ignition, timing and
valve or port timing).
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
correct the adjusting screws within fine
limits.
The ignition module limits maximum
engine speed. Therefore, maximum
engine speed cannot be increased by
turning the high speed screw (H) any
further clockwise (leaner).
Standard Setting
N Shut off the engine.
N Check the air filter and clean or
replace if necessary.
N Check the spark arresting screen
(not in all models, country-specific)
in the muffler and clean or replace if
necessary.
Cleaning the Air Filter Engine Management Adjusting the Carburetor