Stihl 021 Service & Repair Manual page 9

•
Pry the brake band out of the
engine housing.
- Disconnect brake band from bell
crank.
Replace the brake band if:
- there are noticeable signs of
wear (large areas on inside
diameter and/or parts of outside
diameter) and
- its remaining thickness is
< 0.6 mm (0.024").
Important! Thickness of brake
band must not be less at any point.
•
If the brake band is still
serviceable, use No. 120 emery
paper or emery cloth (grain size
approx. 120µm) to clean and
roughen its entire friction surface
(inside diameter).
021, 023, 025
•
Take out the screw.
•
Remove the E-clip.
2
•
Remove strap from bell crank
pivot pin (1).
•
Push the strap sideways and lift
it off the hand guard pivot pin (2).
•
Remove the washer.
1
2
•
Carefully pry the hand guard (1)
and bell crank (2) off their pivot
pins and lift away together.
- Pull the bell crank out of the
hand guard.
1
•
Up to serial number
X 28 310 254, remove the
spring (1).
•
Pull out the cam lever (2).
1
2
9