Toro 74209 Operator's Manual page 55

6. Check belt tension. The center bolt of spring
loaded idler must be between the two alignment
holes in left support plate (Fig 47).
Note: Check position of center bolt in Low
Height of Cut. The center bolt must be
at or below the top alignment hole.
Check position of center bolt in a High
Height of Cut. The center bolt must be
at or above the lower adjustment hole
(Fig 47).
1
Figure 47
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 48
1. Fixed Idler
2
2. Alignment hole
2
m–3746
2. Adjustment slot
8. Check belt tension again. The center bolt of
spring loaded idler must be between the two
alignment holes in left support plate (Fig 47).
Adjust, if necessary, and tighten all hardware
securely.
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. 49).
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 49
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. 50).
1
3
Figure 50
1. Belt guide
2. PTO Drive belt
Maintenance
1
2
m–3740
3. Jam nut
4. Ball joint
2
3. 1/8"–1/4" (3–7 mm)
53