Mower Leveling - Toro Z-Master Z153 Operator's Manual

8. Replace cotter pin.
4
5
2
Figure 50
1. Slotted nut
2. Two threads or less
showing

Mower Leveling

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. Check tire pressure of all four (4) tires. If needed,
adjust to 13 psi (90 kPa)
3. Set anti-scalp rollers to top holes or remove them
completely for this adjustment.
4. Raise the deck to the transport position (Fig. 51). Take
force off of the two large deck lift springs by loosening
jam nut and front spring nut, in front of each spring, as
far as possible (Fig. 52).
5. Place two 1-3/8 (35 mm) thick blocks under rear left
and right lower edge of mower. Place one 1-3/4
(44 mm) block under front center lower edge of
mower. Not under anti–scalp roller brackets. Lower
mower to the 1-1/2 (38 mm) height-of-cut position
(Fig. 51).
Figure 51
1. Transport position
1
3
3. Hole in threaded shaft
4. Washer (if needed)
5. Slot
1
2
m–4122
2. 1-1/2 (38 mm)
height-of-cut
36
6. Loosen bottom chain bolt in slot at rear of deck.
Repeat for opposite side (Fig. 52).
Note: Do not loosen front chain hardware.
7. Loosen front and rear locking nut on either side of
front swivel. Loosen until front chains are loose and
deck is supported by blocks. Repeat for opposite side.
(Fig. 52).
Note: When hardware is loose, deck will rotate the lift
handle up out of position.
8. When hardware is loosened, remaining tension in the
large support springs will tend to rotate the deck lift
handle up, out of the 1-1/2 position. Press down on
the rear deck support arm to firmly return the deck lift
handle to the 1-1/2 position (Fig. 52).
Note: Do not push on deck lift handle.
9. While continuing to press down on rear deck support
arm, take the slack out of the rear chain and tighten
hardware at the bottom (Fig. 52). Downward pressure
may now be released. Repeat for opposite side.
10. Adjust front swivel using rear locking nut until the
front chain is tight and front of deck is still touching
block. Tighten front locking nut. Repeat for opposite
side.
8
9
5
3
6
Figure 52
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 3.00 .125 inches (76 mm
3 mm). Height of cut for rear blade tips should be
3.25 .125 inches (83 mm 3 mm). Readjust if needed.
Note: When checking blade tip heights make sure blades
are not bent and check blade pointing front to rear.
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