Checking And Replacing The Chain Sprocket - Stihl MS 201 C-M Instruction Manual

Checking and Replacing the
Chain Sprocket
Remove chain sprocket cover, saw
N
chain and guide bar
Release chain brake – pull hand
N
guard against the front handle
Fitting a new chain sprocket
after use of two saw chains or
–
earlier
if the wear marks (arrows) are
–
deeper than 0.5 mm – otherwise the
service life of the saw chain is
reduced – use check gauge (special
accessory) to test
Using two saw chains in alternation
helps preserve the chain sprocket.
For the removal and installation of chain
sprocket and clutch described in the
following, a locking strip is required to
immobilize the piston in the cylinder. The
locking strip is included with the
replacement chain sprocket.
STIHL recommends use of original
STIHL chain sprockets in order to
ensure optimal functioning of the chain
brake.
MS 201 C-M
Removal
Pull off the spark plug boot
N
1
Unscrew spark plug (1)
N
Turn the clutch until the piston is in
N
the lower part of the cylinder
2
Insert the locking strip (2) through
N
the opening as far as it will go into
the cylinder
2
Fasten the locking strip (2) on the
N
cylinder fin
Turn the clutch clockwise until the
N
piston rests against the locking strip
Loosen the hexagon of the clutch
N
clockwise (left-handed thread)
Unscrew clutch
N
Remove chain sprocket (3) and
N
needle cage (4) from the crankshaft
Clean crankshaft stub and needle
N
cage and lubricate with STIHL
lubricant (special accessory)
Assembly
Fit needle cage and chain sprocket
N
on the crankshaft
Screw the clutch counterclockwise
N
onto the crankshaft
Tighten the clutch with a torque of
N
25 Nm
English
35