Toro 04019 Operator's Manual page 29

1. Traction drive belt cover
2. Check tension by depressing belt (Figure 46) at mid
span of pulleys with 9 ± 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.
1. Traction drive belt
3. To adjust belt tension:
A. On back side of side plate, loosen the bolt
securing the idler bracket to the side plate
(Figure 47).
Figure 45
Figure 46
1. Tang washer
B. Using a 3/8 inch drive torque wrench, rotate the
idler bracket with 75–85 in.-lb. of torque to set
the belt tension (Figure 48). While holding the
torque wrench setting, tighten the idler bracket
mounting bolt (The tang washer is installed
to prevent the belt from slipping.). Do not
over-tension the belt.
1. Traction drive belt
2. Idler bracket
C. Install the belt cover.
29
Figure 47
2. Idler bracket bolt
Figure 48
3. 3/8 inch Torque wrench
here