Piston Rings; Crankcase; Removing The Crankshaft - Stihl 020 T Service Manual

4.5

Piston Rings

• Remove the piston - see 4.4.1.
• Remove rings from piston.
• Use a piece of old piston ring to
scrape the grooves clean.
• Install the new piston rings in the
grooves so that the radii face
upward.
• Install the piston - see 4.4.2.
STIHL 020 T
4.6

Crankcase

4.6.1

Removing the Crankshaft

• Remove the cylinder - see 4.4.1.
• Drain the oil tank.
• Unscrew the mounting nut (1).
• Pull the flywheel (2) off the
crankshaft.
Note: If the flywheel is stuck, screw
puller (1) onto the crankshaft and
tap the end of the puller to release
flywheel. Remove the puller.
• Take Woodruff key out of slot in
stub of crankshaft.
• Disconnect the short circuit wire
(1) from the ignition module (2).
• Take out the screws (3).
• Pull the ignition module forwards.
• Unscrew ignition lead from
contact pin and pull it out of the
ignition module.
• Unscrew clutch from crankshaft.
Caution: Clutch has left-hand
thread.
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