Stihl FS 90 Instruction Manual page 39

The following maintenance intervals apply in normal operating conditions. The spec-
ified intervals must be shortened accordingly when working for longer than normal
or under difficult cutting conditions (extensive dust, etc.).
Combustion chamber
All accessible screws, nuts and bolts (not
adjusting screws)
Anti-vibration elements
Cutting attachments
Metal cutting attachments
Gear lubrication
Safety information label
1)
STIHL recommends STIHL servicing dealers
FS 90, FS 90 R
Clean after 139 hours of operation, then
every 150 hours of operation, by servic-
1)
ing dealer
Retighten
Check
Have them replaced by a servicing
1)
dealer
Visual inspection
Replace
Check for secure fit
Sharpen
Check
Top up
Replace
X
X X
X X
X
X
English
X
X
X X
X
X
X
X
X
37