Cleaning Under The Deck; Belt Inspection; Replacing The Deck Belt; Replacing The Pto Drive Belt - Toro 74236 Operator's Manual

Note: When properly adjusted, the front blade tip will be
slightly lower than the rear blade tip; refer to Checking for
Bent Blades, page 28, to measure.
10. Recheck that the blocks just fit just under the mower
and that the tension on all four chains is approximately
equal. Tighten the chain attachment bolts securely.
11. Measure the height of cut. This can be checked with the
same procedure as Checking for Bent Blades, page 28.
12. Install the anti-scalp rollers for proper height-of-cut and
tighten them securely.
13. Raise the deck lift lever to the transport position
(Fig. 55).
14. Adjust the compression springs by turning the front
spring nuts so that the distance between the two large
washers is 11 in. (279 mm) (Fig. 56). Clockwise will
shorten the spring; counterclockwise will lengthen the
spring.
Note: Make sure that all hardware is tight.

Cleaning Under the Deck

Remove grass buildup under the deck daily.
1. Position the mower on a flat surface. Stop the engine,
set the parking brake, remove the key, and disconnect
the spark plug wire(s) from the spark plug(s).
2. Raise the deck to the transport position.
3. Raise the front of the machine by using the Z Stand;
refer to Using the Z Stand, page 25.
Danger
Unit could fall onto someone and cause serious
injury or death.
Use extreme caution when operating unit on
Z Stand.
Use only for cleaning deck and removing blades.
Do not keep unit on Z Stand for extended
periods of time.
Always shut engine off and set parking brake
before performing any maintenance to deck.

Belt Inspection

Inspect all belts every 100 hours.
Check belts for cracks, frayed edges, burn marks, or any
other damage. Replace damaged belts.

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, set the parking brake, remove the key,
and disconnect the spark plug wire(s) from the spark
plug(s).
2. Remove the PTO drive belt; refer to Replacing the PTO
Drive Belt, page 42.
3. Loosen the two nuts securing the idler plate and move
the idler arm to relieve the belt tension on the idler
pulley; then remove the worn deck belt (Fig. 57).
4. Install the new deck belt around the spindle pulleys, belt
guide, the idler pulley, and in the lower groove of the
center spindle pulley (Fig. 57).
1
1. Deck belt
2. Idler arm
5. Using a socket and torque wrench, rotate the idler
adjusting nut until the torque is 25–30 ft.-lb.
(34–41 N m). Tighten the two nuts.
6. Install the PTO drive belt; refer to Replacing the PTO
Drive Belt, page 42.

Replacing the PTO Drive Belt

Squealing when the belt is rotating, blades slipping when
cutting grass, frayed belt edges, burn marks, and cracks are
signs of a worn drive belt. Replace the PTO drive belt if
any of these conditions are evident.
1. Stop the engine, set the parking brake, remove the key,
and disconnect the spark plug wire(s) from the spark
plug(s).
2. Remove the clutch retaining strap from the machine
frame and unplug the clutch terminal from the wire
harness (Fig. 58).
42
4
2
Figure 57
Top View
3. Idler nuts
4. Idler adjusting nut
3
m–4312