Stihl MS 311 User Manual

MS 311, MS 391
English
36
The air filter system can be adapted to
different operating conditions by the
insertion of different air filters.
Retrofitting is simple.
Depending on equipment version, the
machine is equipped with a felt filter or a
fabric filter.
Felt filter
For normal, dry or very dusty operating
environments.
Fabric filter
For extreme winter conditions (e.g.,
powdered or drifting snow or frost
formation).
If there is a noticeable loss of engine
power
Remove shroud
N Move the Master Control lever to the
stop position 0
N Push the hand guard forwards – the
saw chain is blocked
N Loosen screws (1)
N Remove the shroud (2)
Remove air filter
N Clean away loose dirt from around
the filter
N Push the clip (1) up and to the rear
and tilt the air filter toward the rear
handle and remove it
N always replace a damaged 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.
Air Filter System 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
4903BA002 KN
1
1
2
Do not clean fleece filters with a
brush!
4903BA006 KN
1

Stihl MS 311 Specifications

General

Oil tank capacity	0.348 L
Fuel tank capacity	0.6 L
Power source	Gasoline

Weight and Dimensions

Weight	6200 g