MS 270, MS 270 C, MS 280, MS 280 C
English
29
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
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
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:
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
N always replace a damaged filter
Installing the air filter
N Fit filter (3) in position (arrows)
N Mount carburetor box cover
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.
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.
Cleaning the Air Filter
Do not use tools to remove and
install the air filter – the air filter
could be damaged in the process.
1
146BA010 KN
2
Do not clean fleece filters with a
brush!
3
146BA011 KN
Adjusting the Carburetor
If you make the setting too lean it
will increase the risk of engine
damage through lack of
lubrication and overheating.
L
LA
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