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21
HS 86 R, HS 86 T
English
1)
STIHL recommends a STIHL servicing dealer
2)
Not installed on all models
Maintenance Chart
The following maintenance operations apply to normal operating conditions.
If working conditions are difficult (very dusty work area, etc.) or your daily working
time is longer than normal, shorten the specified intervals accordingly.
be
fo
re
star
ting w
or
k
a
fte
r fin
ishing
wo
rk
o
r d
aily
af
te
r ea
ch
re
fu
el
in
g s
top
we
ek
ly
mo
nt
hl
y
ye
ar
ly
if p
ro
ble
m
if dam
ag
ed
if r
eq
uir
ed
Complete machine
Visual inspection (condition, leaks)
X
X
Clean
X
Control handle
Check operation
X
X
Air filter (felt)
Clean
X
X
Replace
X
Air filter (paper)
Clean
X
X
Replace
X
X
Filter in fuel tank
Have checked by dealer
1)
X
Have replaced by dealer
1)
X
X
X
Fuel tank
Clean
X
X
Carburetor
Check idle setting
X
X
Readjust idle
X
Spark plug
Readjust electrode gap
X
Replace after 100 hours of operation
Cooling inlet
Visual inspectiong
X
Clean
X
Spark arresting screen
2)
in muffler
Have checked by dealer
1)
X
Have cleaned or replaced by dealer
1)
X
All accessible screws and nuts (not
adjusting screws)
Retighten
X
AV elements (springs)
Visual inspection
X
Have replaced by dealer
1)
X
X
Cutting blade
Clean
X
Sharpen
X
Gearbox lubrication
Lubricate after 25 hours of operation
Safety labels
Replace
X