Instruction Manual

MS 231, MS 231 C, MS 251, MS 251 C
English
44
Anti-vibration elements
check XX
Have replaced by servicing dealer
1)
X
Air intake on fan housing Clean XX X
Cylinder fins Clean XX X
Carburetor
Check idle adjustment – saw chain must not
rotate
XX
Set the idle speed; if required have the chainsaw
repaired by a specialist dealer
1)
X
Spark plug
Adjust electrode gap X
Replace after 100 hours of operation
Accessible screws and nuts (except adjusting
screws)
Tighten
2)
X
Chain catcher
check X
replace X
Safety information label replace X
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
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.
Before starting work At the end of work and/or daily Whenever tank is refilled Weekly Monthly Annually If faulty If damaged As required