Stihl MS 311 Instruction Manual page 44

English
The following maintenance intervals apply for normal operating conditions only. When working under
difficult conditions (high accumulation of dust, highly resinous lumber, lumber from tropical trees, etc.)
or longer than normal each day, the specified intervals must be shortened accordingly. If you only use
the tool occasionally, extend the intervals accordingly.
Anti-vibration elements
Air intake on fan housing
Cylinder fins
Carburetor
Spark plug
Accessible screws and nuts (except adjusting
screws)
Spark arresting screen in muffler
Chain catcher
Safety information label
1)
STIHL recommends STIHL servicing dealer
2)
When using professional chainsaws (with a power output of 3.4 kW or more) for the first time, tighten the cylinder block screws after 10 to 20 hours of operation
42
check
1)
Have replaced by servicing dealer
Clean
Clean
Check idle adjustment – saw chain must not
rotate
Set the idle speed; if required have the chainsaw
1)
repaired by a specialist dealer
Adjust electrode gap
Replace after 100 hours of operation
2)
Tighten
1)
Have checked by dealer
Have cleaned; if required have replaced by spe-
1)
cialist dealer
check
replace
replace
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MS 311, MS 391