Adjusting The Push Arms; Cleaning Under The Deck; Inspecting The Belts; Replacing The Deck Belt - Toro 74179 Operator's Manual

10. Adjust the front swivel using the rear locking nut until
the front chain is tight and the front of the deck is still
touching the block. Tighten the front locking nut.
Repeat for the opposite side.
8
9
5
3
6
Figure 53
1. Bottom chain bolt
2. Top chain bolt
3. Front swivel
4. 10-1/4 inch (260 mm)
spring compressed
11. Recheck that the blocks fit just snuggly under the
mower and that the tension on all four chains are
approximately equal.
12. Raise the deck to the 3 inch (76 mm) height of cut and
measure the actual height from the blade tips to the
ground. The height of cut for the front blade tips should
be 3 1/8 inch (76 3 mm). The height of cut for the
rear blade tips should be 3-1/4 1/8 inch (83 3 mm).
Readjust if needed.
Note: When checking the blade tip heights, make sure that
the blades are not bent and check the blade pointing front to
rear.
13. Install anti-scalp rollers for proper height-of-cut and
tighten them securely; refer to Adjusting the Anti-Scalp
Rollers, page 22.
14. Raise the deck lift lever to the transport position
(Fig. 52).
15. Adjust the compression springs by turning the front
spring nuts so that the distance between the two large
washers is 10-1/4 inch (260 mm); then tighten the jam
nut (Fig. 53).
Note: Make sure that all hardware is tight.

Adjusting the Push Arms

1. To adjust the push arms, loosen the jam nut and rotate
the ball joint counterclockwise, one turn at a
time.(Fig. 54).
7
1
4
2
m–4116
5. Rear locking nut
6. Front locking nut
7. Rear deck support arm
8. Front spring nut
9. Jam nut
2. Adjust each side the same amount. Each push arm
should have a nominal length of 15-5/16 inch (389 mm)
(Fig. 54).
Note: Increase the tension by lengthening the push arms
and decrease the tension by shortening the push arms.
3
1
1. Push arm
2. 15-5/1 inch (389 mm)
nominal

Cleaning Under the Deck

Remove grass build up 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. Lift the front of the unit and support the unit using jack
stands.
Danger
Mechanical or hydraulic jacks may fail to support
machine and cause a serious injury.
Use jack stand when supporting machine.
Do not use hydraulic jacks.

Inspecting the Belts

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.
41
4
2
Figure 54
3. Jam nut
4. Ball joint
m–6273