Toro 30431, Operator'S Manual, Page: 38 / 48

38
MEASURE FROM
CUTTING EDGE TO
A LEVEL SURFACE
m–2550
Figure 56
5. If it does not measure correctly, add air pressure in rear
tires to raise height–of–cut
6. If it does not measure correctly, decrease air pressure in
rear tires to lower height–of–cut.
7. Check carrier frame front–to–rear pitch.
Adjusting the Traction Drive
Belt Tension
It may be necessary to increase the drive belt tension as the
belt wears.
1. Stop engine and remove spark plug wire(s).
2. Disengage neutral/brake locks and release drive levers
to lower spring force.
3. Remove drive spring from adjustment bolt assembly
(Fig. 57).
4. Remove the adjustment bolt assembly (Fig. 57).
5. Locate the adjustment bolt assembly into the desired
tension position as follows.
•
Position A – New belt
•
Position B – Low belt wear
•
Position C – Medium belt wear
•
Position D – Most severe belt wear
Note: Do not over extend the spring. The spring length
should not exceed 7–5/8 inches with the paring brake
engaged (Fig. 57).
6. Install adjustment bolt assembly and spring.
7. Repeat for opposite side.
m–6595
6
1
2
3
5
4
Figure 57
1. Position A, New belt
2. Position B, Low belt wear
3. Position C, Medium belt
wear
4. Position D, Most severe
belt wear
5. Spring
6. Adjustment bolt, In
position A
Replacing the Traction Drive
Belt
Service Interval/Specification
Check all belts after every 50 operating hours or monthly,
whichever occurs first. Look for cracks, wear, and signs of
overheating.
1. Remove the top capscrew securing idler support and
idler bracket to rear frame (Fig. 58).
2. Loosen bottom two mounting screws enough to allow
belt to pass between drive pulley and idler support
(Fig. 58).
3. Raise the wheel off the ground, to allow the belt to be
removed, and remove the belt.
4. Install a new belt.
5. Install the top capscrew securing the idler support and
idler bracket to the rear frame (Fig. 58).
6. Tighten the bottom two mounting screws enough to
allow the belt to pass between the drive pulley and idler
support (Fig. 58).