Toro Power Clear 621 Service Manual page 20

SPECIFICATIONS & MAINTENANCE
NOTE
After extended use, the drive belt may wear and lose its
proper belt tension. If the drive belt slips (continuously
squeals) under a heavy load,disconnect the spring from
the adjustor link and move the upper end of the spring to
the hole that is further from the pivot point in the control
bar (Fig. 011). Then connect the spring to the adjustor link
and adjust the control cable.
B
A
C
D
A. Remove the upper end of spring from this hole
B. Insert the upper end of spring into this hole
C. Pivot point
D. Upper end of spring
NOTE
The belt may slip (squeal) in wet conditions; to dry out the
drive system, start the rotor and run it without a load for
30 seconds.
2-16
Fig. 011
Toro Single Stage Snow Service Manual