Toro 04019 Operator's Manual page 28

Reel Drive Belt (Transmission coupler)
1. Remove the belt cover mounting fasteners and belt
cover to expose belt (Figure 41).
Figure 41
1. Belt cover
2. Check tension by depressing belt (Figure 42) at mid
span of pulleys with 4 ± 1 lb. of force. Belt should
deflect 3/16 to 5/16 inch (4.8 to 7.9 mm). If the
deflection is incorrect, proceed to next step.
Figure 42
1. Reel drive belt
3. To adjust belt tension:
A. Loosen the bearing housing mounting nuts
(Figure 43).
1. Reel drive belt
B. Using a 3/8 inch drive torque wrench, rotate the
bearing housing with 35-40 in.-lb. of torque to
set belt tension (Figure 44).
1. Bearing housing
C. While holding the torque wrench setting, tighten
the bearing housing mounting nuts (Figure 43).
Do not over-tension belt.
D. Install belt cover.
Traction Drive Belt
1. Remove belt cover mounting fasteners and belt
cover to expose belt (Figure 45).
28
Figure 43
2. Bearing housing mounting
nuts
Figure 44
2. 3/8" Torque wrench here