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Maintenance Chart
Please note that the following maintenance intervals apply for normal operating
conditions. If your daily working time is longer than normal or conditions are
difficult (very dusty work area, etc.), shorten the specified intervals accordingly.
Complete machine
Auger brake
Control handle
Air filter
Pickup body in fuel tank
Fuel tank
Carburetor
Spark plug
Spark arresting screen in muffler
All accessible screws and nuts (not
adjusting screws)
Antivibration elements
Gearbox
Drilling spindle
Auger
Safety labels
1)
STIHL recommends the STIHL servicing
dealer
24
Visual inspection (condition, leaks)
Clean
Check operation
1)
Have serviced by dealer
Check operation
Clean
Replace
Check
Replace
Clean
Check idle adjustment –
drilling spindle must not rotate
Readjust idle
Readjust electrode gap
Replace after 100 hours of operation
Have checked by STIHL dealer
Retighten
Check
1)
Have replaced by dealer
Re-lubricate
Clean
Inspect
Replace
Replace
X
x
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
x
BT 121
X
X
X
X
X
X
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