Adjusting Push Arms; Throttle Lever Adjustment; Clean Under Deck; Belt Inspection - Toro Z-Master Z153 Operator's Manual

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. 51).
15. Adjust compression springs by turning the front spring
nuts so the distance between the two large washers is
10-1/4 (260 mm). Then tighten jam nut (Fig. 52).
Note: Make sure all hardware is tight.

Adjusting Push Arms

1. To adjust push arms, loosen jam nut and rotate ball
joint counterclockwise, one turn at a time. (Fig. 53).
2. Adjust each side the same amount. Each push arm
should have a nominal length of 15-5/16 (389mm)
(Fig. 53).
Note: Increase tension by lengthening the push arms and
decrease tension by shortening push arms.
3
1
Figure 53
1. Push arm
2. 15-5/16 (389 mm)
nominal

Throttle Lever Adjustment

The tension can be adjusted by adjusting the tightness of
lever pivot bolt. Do this when needed.
1. Stop engine, remove ignition key.
2. Remove console from machine to gain access to
throttle lever.
3. Tighten nut and bolt. Test lever and adjust to desired
tension (Fig. 54).
1
2
m–3740
3. Jam nut
4. Ball joint
37
1 3 4 2
Figure 54
1. Pivot bolt
2. Throttle lever
3. Belleville washers
4. Tab washer

Clean Under Deck

Remove grass build up under deck daily.
1. Position 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 deck to the transport position.
3. Lift the front of unit and support 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.

Belt Inspection

Inspect all belts every 100 hours.
1. 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).
5 6 7
5. Washer
6. Bracket
7. Nut