Toro TURBO FORCE 39678 Operator's Manual page 40

Figure 43
1. Idler pulley
Note:
The eyebolt threads on both ends of the
turnbuckle should be engaged a minimum of 8
mm (5/16 inch).
Figure 44
1. 13 mm (1/2 inch) deflection
here
2. Assist arm
3. Front stop
5. Engage the PTO and check the belt tension.
Adjust the tension until it is correct.
Note:
The proper mower belt tension is 44 to
67 N∙m (10 to 15 ft-lb) with the belt deflected
g001565
2. Mower belt with 13 mm
(1/2 inch) deflection
g001566
4. Locknut
5. Turnbuckle
13 mm (1/2 inch) halfway between the pulleys
(Figure 44).
6. If there is no adjustment remaining in the
turnbuckle and the belt is still loose, the rear
idler pulley needs to be positioned to the middle
or front hole (Figure
provides the correct adjustment.
7. When you move the idler pulley, you must move
the belt guide. Move the belt guide to the front
position (Figure
1. Rear idler pulley
2. Middle hole
3. Front hole
8. Check the belt guide under the engine frame for
proper adjustment
Note:
The distance between the belt guide and
the mower belt should be 19 mm (3/4 inch) when
you engage the mower belt
the mower belt as necessary. The disengaged
belt should not drag or fall off the pulley when the
guides and belt tension are properly adjusted.
9. Check the adjustment of the blade brake; refer
to Adjusting the Blade Brake (page
40
45). Use the hole that
45).
Figure 45
4. Belt guide in the back
position
5. Front idler pulley
(Figure 46).
(Figure 46). Adjust
45).
g001848