Air Filter System; Remove Air Filter; Cleaning The Air Filter; Engine Management - Stihl GS 461 Instruction Manual

12 Air Filter System

11.3 After finishing work
11.3.1 Short-term storage
Wait for engine to cool down. Keep the machine
with a full tank of fuel in a dry place, well away
from sources of ignition, until you need it again.
Clean and dry guide bar and diamond abrasive
chain, and spray with STIHL multispray – in par‐
ticular the bearing of the sprocket nose – corro‐
sion protection. Do not spray engine unit!
11.3.2 Long-term storage
See "Storing the machine"
12 Air Filter System
When dry, STIHL filters attain a long service life.
► Always use STIHL filters dry
Fouled air filters will impair engine performance,
increase fuel consumption and make the
machine more difficult to start.

13 Remove Air Filter

► Turn screw plug above the rear handle in the
direction of the arrow and remove filter cover –
screw plug is secured in the filter cover
► Detach the air filter
Do not remove and clean the auxiliary filter.

14 Cleaning the Air Filter

If there is a noticeable loss of engine power:
0458-761-8221-B
► Dry wet air filter if necessary – do not expose
to extreme heat
► If the air filter is very dirty, clean the filter thor‐
oughly
Thorough filter cleaning
► 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
► Dry the air filter – do not expose to extreme
heat, do not dry with compressed air
► Do not oil the air filter
► Reinstall air filter
Always replace a damaged air filter.

15 Engine Management

Exhaust emissions are controlled by the design
of the engine and components (e.g. carburation,
ignition, timing and valve or port timing).

16 Adjusting the Carburetor

16.1 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 can‐
not be increased by turning the high speed
screw (H) any further clockwise (leaner).
16.2 Standard Setting
► Shut off the engine.
► Check the air filter and clean or replace if nec‐
essary.
► Check the spark arresting screen (not in all
models, country-specific) in the muffler and
clean or replace if necessary.
English
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