Toro Greensmaster Flex21 04021 Operator's Manual page 25

Figure 30
1. Belt cover
2. Check tension by depressing belt (Figure 31 ) at
mid span of pulleys with 4 ± 1 lb. of force. Belt
should deflect 1/4 in. If deflection is incorrect,
proceed to next step.
Figure 31
1. Reel drive belt
3. To adjust belt tension:
A. Loosen the bearing housing mounting nuts
(Figure 32 ).
Figure 32
1. Reel drive belt
B. Using a 3/8 in. drive torque wrench, rotate the
bearing housing with 35-40 in.-lb. of torque to
set belt tension (Figure 33 )
Figure 33
1. Bearing housing
C. Tighten the bearing housing mounting nuts
(Figure 32 ). Do not over-tension belt.
D. Install belt cover.
Reel Drive Belt (Transmission coupler)
1. Remove the belt cover mounting fasteners and belt
cover to expose belt (Figure 34 ).
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2. Bearing housing mounting
nuts
2. 3/8" Torque wrench here