Exmark Lazer Z SX Diesel Models 4500-501 Rev A - Manual (Page 38)

Maintenance
• Under top cutter housing bearing guard.
• Between the jackshaft and bearings and the
jackshaft and sheaves.
Copper-Based Anti-seize
Copper-based anti-seize is used in the following
locations:
On threads of Blade Bolts See Check Mower Blades
section.
Dielectric Grease
Dielectric grease is used on all blade type electrical
connections to prevent corrosion and loss of contact.
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 10 psi (69 kPa). Adjust if
necessary.
4. Set anti-scalp rollers to top holes or remove them
completely for this adjustment.
5. Raise the deck to the 5 inch (12.7 cm) height
position (also transport position) and take all force
off of the two large deck lift springs by loosening
the nuts at the front of each spring (Figure 15).
6. Lower the deck to the 1 inch (2.54 cm) height
position. Force the left rear deck support arm
downward about 1/4 inch (6.4 mm) to get the
deck to rest at the 1 inch height position. Place
locking pliers between the rear swivel and spring
stop to hold the deck in this position (Figure 15).
7. Place a 3/4 inch (19 mm) thick block of wood
under each of the two rear anti- scalp roller
brackets and place one under one of the front
center 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. 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 don’t move while tightening.
9. Loosen the four nuts which secure the front
swivels (two per side) until the front chains are
loose and front of deck is supported by the 3/4
inch (19 mm) block. Do Not loosen the 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 3/4 inch (19 mm) block. Secure
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