Toro 23515 Service Manual page 65

3. Install the drive chains onto the idler and trans-
mission sprockets. Insert the master link so that the
spring clip is toward the outside of the machine and
the opening is to the back of forward rotation. Do not
tighten the chains at this time (Fig. 127).
Fig. 127
4. Install the chain on the front axle sprocket. Ensure
that the front axle sprocket is aligned with the
sprocket on the transmission. Install the master link
so that the spring clip is toward the inside of the
machine and the opening is to the back of forward
rotation (Fig. 128).
Fig. 128
Toro 21" Aerator Service Manual
HYDRAULICS & ENGINE MOUNTING
5. Tighten the seven transmission mounting bolts.
Torque to 17 ft-lbs. (23 Nm) (Fig. 129).
6a
A. Mounting hardware (7 locations)
6. Tension the transmission belt. Push the idler pulley
to the left. Tighten the idler pulley to 30 ft-lbs (20.6
Nm). Push on a span of the drive belt with 20 lbs (9
kg) of force. The belt should flex no more than 1/8
inch (3mm). If it flexes more than that, re-tension the
belt (Fig. 130).
31a
A. Pump drive belt
B. Idler pulley
A
A
A
Fig. 129 fig. 35 G023507
A
B
Fig. 130 fig. 33 G013125
C. Idler pulley nut
A
4
C
4-11