Cleaning The Air Filter; Adjusting The Carburetor - Stihl MS 280 Instruction Manual

Cleaning the Air Filter

If there is a noticeable loss of engine
power
Remove the carburetor box cover
N Move the Master Control lever to the
stop position 0
1
2
N Turn the knob (1) above the rear
handle in the direction of the arrow
N
Remove the carburetor box
cover (2)
Remove air filter
N Clean away loose dirt from around
the filter
Do not use tools to remove and
install the air filter – the air filter
could be damaged in the process.
N Remove filter
Cleaning the air filter
N Knock out the filter or blow it clear
with compressed air from the inside
outwards.
In case of stubborn dirt:
MS 270, MS 270 C, MS 280, MS 280 C
N Wash the parts of the filter in STIHL
special-purpose cleaner (special
accessories) or a clean, non-
flammable cleaning liquid (e.g.,
warm soapy water) and dry them
Do not clean fleece filters with a
brush!
N always replace a damaged filter
Installing the air filter
3
N Fit filter (3) in position (arrows)
N Mount carburetor box cover

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.
Chain saws in these series are equipped
with varying carburetors:
Intelligent engine management –
carburetor without high speed
screw (H)
Full-throttle range and maximum speed
are controlled electronically.
English
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