Maintenance
Adjustments
Note:
Disengage PTO, shut off engine, wait for
all moving parts to stop, engage parking brake, and
remove key before servicing, cleaning, or making any
adjustments to the unit.
Deck Leveling
1. Position mower on a flat surface.
2. Stop engine, wait for all moving parts to stop, and
remove key. Engage parking brake.
3. Check tire pressure in drive tires. Proper inflation
pressure for tires is 13 psi (90 kPa). Check tire
pressure in caster tires. Proper inflation pressure
for tires is 13 psi (90 kPa). Adjust if necessary.
Semi-pneumatic caster tires do not need to be
inflated.
4. Set anti-scalp rollers to top holes or remove them
completely for this adjustment.
5. Raise the deck to the 4 1/2 inch (11.4 cm) height
position and take as much force as possible off of
the two large deck lift springs by loosening the
nuts at the front of each spring. (Figure 14).
6. Lower the deck to the 1 1/2 inch (3.8 cm)
height position. Place two 1 5/16 inch (3.3 cm)
thick blocks under the rear edge of the cutting
deck skirt; one on each side of the cutting deck
(Figure 14).
7. Place a 1 1/8 inch (2.9 cm) block under the center
front edge, but not under the anti-scalp roller
brackets
8. Loosen the two top chain bolts in slots in the
rear deck lift arms. Loosen jam nuts and back off
the socket head adjusting screws on the bottom
of the arms until the chains are just loose when
pressure is applied to force rear deck support
arms down. Continue to press down on rear deck
support arms and turn the socket head adjusting
screws in until slack is taken out of each chain.
Tighten the jam nuts. Tighten the chain bolts in
the deck lift arms making sure they do not move
while tightening.
9. Loosen four nuts which secure front swivels (two
per side), until front chains are loose and front
of deck is supported by the 1 1/8 inch (2.9 cm)
block. Do not loosen front chain hardware.
10. On left side, adjust front swivel using the locking
nut behind the swivel until the front chain is tight
and all slack is removed from linkage. Do not
lift front of deck off 1 1/8 inch (2.9 cm) block.
Secure front swivel using locking nut in front of
swivel. Repeat for right side.
Figure 14
1.
Swivel
2.
Adjust front deck height here
3.
Adjust spring tension here
4.
9 1/2 inches (24.1 cm) for 52 inch deck
5.
Apply downward pressure here
6.
Jam nut
7.
Socket head adjusting screw
8.
Slotted hole
9.
Front of the unit
11. Recheck that blocks fit just snugly under the
deck skirt and that the tension on all the chains
are approximately equal. Make sure all chain
attachment bolts are tight.
12. Raise deck lift lever to the 4 1/2 inch (11.4 cm)
cutting height position (also transport position
(Figure 8). Adjust spring compression until
proper distance is obtained between the two
washers by turning the nut at the front of each
spring (Figure 14). Lock nuts in position with jam
nuts.
13. Reposition anti-scalp rollers and tighten securely.
Note:
When above adjustments have been made,
the front of the deck will be slightly lower than the
rear of the deck.
Pump Drive Belt Tension
Self-tensioning - No adjustment necessary.
Deck Belt Tension
Self-tensioning - No adjustment necessary.
Brake Link Adjustment
Check to make sure brake is adjusted properly.
32
Summary of Contents for LAZER Z HP 523
Page 1: ...LAZER Z HP 523 For Serial Nos 720 000 Higher Part No 4500 257 Rev A ...
Page 11: ...Safety 1 633922 1 653147 98 5954 103 2644 103 4892 103 4930 11 ...
Page 12: ...Safety 103 6340 103 9287 107 2102 107 2112 12 ...
Page 13: ...Safety 109 1196 109 3148 109 7949 103 4891 108 5995 1 Fast 2 Slow 3 Neutral 4 Reverse 13 ...
Page 42: ...Service Record Date Description of Work Done Service Done By 42 ...
Page 43: ...43 ...
