Sears 721.21195000 Basic Field Manual page 9

TO REPLACE BELT:
1) Install brush supports onto brush assembly.
2) Install new belt in belt groove on the brush assembly,
than over the motor shaft. Be sure belt in between the
belt guards.
Motor Shaft
Belt Guard
3) Insert each support into its base slots.
4) Line up tabs on cover with slots inside the base.
5) Push cover and base together.
Belt
Belt Groove
- 9 -
Cover Tab
Base Slot
MODEL 721.21195000
721.21295000
20.21125
20.21325