Toro Z255 Operator's Manual page 60

Maintenance
1
Figure 52
1. Center bolt, spring loaded
idler
7. If adjustment is required, loosen the fixed idler
on right support plate and move up or down in
adjustment slot. To relieve belt tension lift up on
spring loaded idler.
1
Figure 53
1. Fixed Idler
8. Check belt tension again. The center bolt of
spring loaded idler must be between the two
alignment holes in left support plate (Fig 52).
Adjust, if necessary, and tighten all hardware
securely.
58
2
m–3744
2. Alignment hole
2
m–3746
2. Adjustment slot
9. If the fixed idler contacts the end of the
adjustment slot and more belt tension is
required, a small change in the lengthen the push
arms can be made (Fig. 54).
10. To lengthen, loosen jam nut and rotate ball joint
counterclockwise, one turn at a time. Adjust
each side the same amount.
3
1
Figure 54
1. Push arm
2. 15–5/16" (389 mm)
nominal
11. Rotate the belt guide, on rear of the mower, so it
is 1/8"–1/4" (3–7 mm) away from the vertical
side of the PTO belt (Fig. 55).
3
Figure 55
1. Belt guide
2. PTO Drive belt
1
2
m–3740
3. Jam nut
4. Ball joint
1
2
3. 1/8"–1/4" (3–7 mm)