Adjusting The Push Arms; Cleaning Under The Deck; Inspecting The Belts; Replacing The Deck Belt - Toro 74177 Operator's Manual

8
9
5
3
6
Figure 57
1. Bottom chain bolt
2. Top chain bolt
3. Front swivel
4. 10-1/4 (260 mm) spring
compressed
11. Recheck that blocks fit just snuggly under the mower
and that tension on all four chains are approximately
equal.
12. Raise deck to 3 inch height of cut and measure actual
height from blade tips to ground. Height of cut for the
front blade tips should be 3 inch 1/8 inch (76 mm 3
mm). Height of cut for rear blade tips should be
3–1/4 inch 1/8 inch (83mm 3mm).Readjust if
needed.
Note: When checking blade tip heights make sure blades
are not bent and check blade pointing front to rear.
13. Install anti-scalp rollers for proper height-of-cut and
tighten securely. See Adjusting Anti Scalp Rollers on
page 21.
14. Raise deck lift lever to the transport position (Fig. 56).
15. Adjust compression springs by turning the front spring
nuts so the distance between the two large washers is
10-1/4 inch (260 mm). Then tighten jam nut (Fig. 57).
Note: Make sure all hardware is tight.

Adjusting the Push Arms

1. Loosen the jam nut and rotate the ball joint
counterclockwise, one turn at a time (Fig. 58).
2. Adjust each side the same amount. Each push arm
should have a nominal length of 15-5/16 inch (389 mm)
(Fig. 58).
Note: Increase the tension by lengthening the push arms
and decrease the tension by shortening the push arms.
7
1
4
2
5. Rear locking nut
6. Front locking nut
7. Rear deck support arm
8. Front spring nut
9. Jam nut
3
1
1. Push arm
2. 15-5/16 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.
1. Stop the engine, set the parking brake, remove the key,
and disconnect the spark plug wire(s) from the spark
plug(s).
41
4
2
Figure 58
3. Jam nut
4. Ball joint
m–6273