Stihl BT 131 Instruction Manual page 21

The following intervals apply to normal operating conditions only. If your daily work-
ing time is longer or operating conditions are difficult (very dusty work area, etc.),
shorten the specified intervals accordingly.
Combustion chamber
Spark arresting screen in muffler,
not all markets
All accessible screws and nuts (not adjust-
ing screws)
Anti-vibration elements
Gearbox lubrication
Drilling spindle
Auger
Auger blade
Safety labels
1)
STIHL recommends an authorized STIHL servicing dealer.
2)
Only if there is a noticeable loss of engine power
BT 131
Have cleaned after every 150 hours of
1)
operation by servicing dealer
Check
Clean or replace
Retighten
Check
1)
Have replaced by servicing dealer
Check
Replenish
Clean
Check
Replace
Check
Turn over or replace
Replace
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English
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