Toro 30339, Operator'S Manual

Page: 43 / 52

43
2. Set the height-of-cut to the 4 in. (102 mm) position
following the height-of-cut decal.
3. With the machine on level surface, position one blade
front-to-rear (Fig. 61). Measure at “A” and from level
surface to the cutting edge of the blade tips (Fig. 62).
4. The measurement should be 4 in. (102 mm).
A
F ront
m–1078
Figure 61
MEASURE F R O M
CUT T I N G E D G E T O
A L E V E L S U R F ACE
m–2550
Figure 62
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.
Replacing the Traction Belt
Check traction drive belt for wear after every 50 hours of
operation.
1. Raise the front of the machine and hold with jack
stands.
2. Disconnect clutch wire connector from wire harness.
3. Remove PTO drive belt. Refer to Replacing the PTO
Drive Belt on page 44.
4. Remove clutch retainer from the engine deck (Fig. 63).
5. Unhook tension spring from side of frame (Fig. 63).
6. Loosen pivot bolt enough to remove traction belt from
the drive pulley and clutch.
7. Install new belt around clutch and drive pulleys.
8. Torque pivot bolt to 35-40 ft. lb. (47-54 N.m). Install
tension spring between idler arm and frame bracket
(Fig. 63).
9. Install clutch retainer to the engine deck (Fig. 63).
10. Connect clutch wire connector to wire harness.
11. Install PTO drive belt.
m–5340
5
2
3
1
4
6
7
8
Figure 63
1. Traction belt
2. Idler pulley
3. Clutch retainer
4. Tension spring
5. Clutch wire connector
6. Pivot bolt
7. Drive pulley
8. Engine deck
Replacing the Deck Belt
Squealing when the belt is rotating, blades slipping when
cutting grass, frayed belt edges, burn marks and cracks are
signs of a worn deck belt. Replace the deck belt if any of
these conditions are evident.
1. Stop the engine, remove the key and disconnect the
spark plug wire(s) from the spark plug(s).
2. Remove the knobs holding the carrier frame cover and
remove the carrier frame cover.
3. Remove the knobs holding the belt covers to the
cutting unit and remove the belt covers.
4. Remove the PTO drive belt. Refer to Replacing the
PTO Drive Belt on page 44.
5. Disconnect the idler arm spring to relieve tension on
the idler arm and idler pulley, then remove the worn
deck belt (Fig. 64).
6. Install the new deck belt around the two outside
spindle pulleys, the idler pulley, and in the lower
groove of the center spindle pulley (Fig. 64).
7. Connect the idler arm spring (Fig. 64).
8. Reinstall the PTO drive belt. Refer to Replacing the
PTO Drive Belt page 44.