Checking and Replacing the Chain Sprocket
NRemove chain sprocket cover, saw chain and guide bar
Removal
NPull off the spark plug boot
English
NRelease chain brake – pull hand guard against the front handle
Fitting a new chain sprocket
1 
0011BA031 KN
2 | KN |
| 0011BA032 |
NFasten the locking strip (2) on the cylinder fin
N Turn the clutch clockwise until the |
piston rests against the locking strip |
001BA120 KN
–after use of two saw chains or earlier
–if the wear marks (arrows) are deeper than 0.02 in (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.
NUnscrew spark plug (1)
NTurn the clutch until the piston is in the lower part of the cylinder
2 
KN0011BA037
NInsert the locking strip (2) through the opening as far as it will go into the cylinder
144BA017 LÄ
NLoosen the hexagon of the clutch counterclockwise
NUnscrew clutch
144BA018 LÄ
NRemove chain sprocket (3) and needle cage (4) from the crankshaft
NClean crankshaft stub and needle cage and lubricate with STIHL lubricant (special accessory)
MS 201, MS 201 C | 45 |