Replacing The Mower Belt - Toro 30164 Operator's Manual

Maintenance

Replacing the Mower Belt

1. Disengage the power take off (PTO), set the
parking brake, and turn the ignition key to
"OFF" to stop the engine. Remove the key and
spark plug wire.
2. Remove the knobs and belt cover on mower.
3. Remove idler pulley and then remove worn belt
(Fig. 48).
4. Install new belt.
5. Install idler pulley.
6. Engage PTO and check belt tension. See
Adjusting Mower Belt Tension, page 41.
Note: Proper belt tension is 10–15 lbs. with
the belt deflected a 1/2" (13mm)
halfway between pulleys (Fig. 48).
2
1
Figure 48
1. Belt (1/2" (13mm)
Deflection)
7. Engage PTO lever and check the clearance
between the bellcrank and the transmission
output shaft (Fig. 49). Space should be
1/16"–1/8" (2–3mm).
8. Remove hairpin cotter and clevis pin from
bellcrank. Rotate clevis clockwise on rod to
increase or counterclockwise to decrease
clearance (Fig. 49).
40
1/2"
(13mm)
2. Idler Pulley
1
4
5
Figure 49
1. 1/16" (2mm)–1/8" (3mm)
2. Bellcrank
3. Transmission output shaft
9. Disengage the PTO. If the assist arm does not
contact the front stop on the mower deck
(Fig. 50), readjust the clevis to bring the
bellcrank closer to the transmission output shaft
(Fig. 49).
5
Figure 50
1. 1/2" (13 mm) deflection
here
2. Assist arm
10. Check the belt guide under the engine frame for
proper adjustment (Fig. 47). The distance
between the belt guide and mower belt should be
1-1/4" (32mm) when mower belt is engaged.
Adjust as necessary. The disengaged belt should
not drag or fall off pulley when guides are
properly adjusted.
3
2
6
m–3860
4. Hairpin cotter
5. Clevis pin
6. Clevis
4
2
1
3. Front stop
4. Locknut
5. Turnbuckle
3