Stihl BT 131 Instruction Manual page 17

18 Maintenance and Care
The following intervals apply for normal operating
conditions. The specified intervals must be short‐
ened accordingly when working for longer than nor‐
mal or under difficult cutting conditions (extensive
dust, etc.).
Fuel tank
Carburetor
Spark plug
Cooling air intakes
Cylinder fins
Valve clearance
Combustion chamber
Spark arresting screen in
muffler,
available in market-spe‐
cific versions
All accessible screws,
nuts and bolts (not
adjusting screws)
Anti-vibration elements
Gearbox lubrication
Drilling spindle
Drilling tool
Auger blade
Safety information label
0458-529-8321-B
Have replaced by serv‐
1)
icing dealer
Clean
Check idle adjustment –
drilling spindle must not
rotate
Adjust idle speed
Set electrode gap
Replace after every 100
hours of operation
Visual examination
Clean
Have cleaned by
1)
dealer
If power is low or crank‐
ing effort very high, have
valve clearance checked
and, if necessary, adjus‐
1)
ted by dealer
Have cleaned after
every 150 hours of oper‐
1)
ation by dealer
check
Clean or replace
Tighten
check
Have replaced by serv‐
1)
icing dealer
check
top up
Clean
check
replace
check
Turn over or replace
replace
X X
X
X
X
X
X
X
X
English
X X X
X X
X
X
X
X
X
X
X
X X
X
X X
X
X
X X
X X
X
17