Cutting Attachment; Mounting The Bar And Chain - Stihl MS 290 Instruction Manual

English
Maintenance, replacement, or repair of
the emission control devices and
systems may be performed by any
nonroad engine repair establishment or
individual. However, if you make a
warranty claim for a component which
has not been serviced or maintained
properly or if nonapproved replacement
parts were used, STIHL may deny
coverage.
For any maintenance please refer to the
maintenance chart and to the warranty
statement near the end of the instruction
manual.
14

Cutting Attachment

STIHL is the only manufacturer in the
industry to produce its own chain saws,
guide bars, saw chains and chain
sprockets.
A cutting attachment consists of the saw
chain, guide bar and chain sprocket.
The cutting attachment that comes
standard is designed to exactly match
the chain saw.
1
a
t = a : 2
The pitch (t) of the saw chain (1),
–
chain sprocket and the nose
sprocket of the Rollomatic guide bar
must match.
The drive link gauge (2) of the saw
–
chain (1) must match the groove
width of the guide bar (3).
If non-matching components are used,
the cutting attachment may be damaged
beyond repair after a short period of
operation.

Mounting the Bar and Chain

Removing the chain sprocket cover
Unscrew the nuts and take off the
2
N
chain sprocket cover.
3
2
Turn the screw (1)
N
counterclockwise until the tensioner
slide (2) butts against the left end of
the housing slot.
MS 290, MS 310, MS 390
1