Exmark LZ27KC604 manual Caster Pivot Bearings Pre-Load Adjustment, Adjust Seat Switch

Maintenance

Caster Pivot Bearings

Pre-Load Adjustment

Remove dust cap from caster and tighten nyloc nut until washers are flat and back off 1/4 of a turn to properly set the pre-load on the bearings. If disassembled, make sure the spring disc washers are reinstalled as shown in Figure 23.

Figure 22

1.Motion control bracket

2.Least resistance (softest feel)

3.Medium resistance (medium feel)

4.Most resistance (firmest feel)

5.Torque nyloc nut to 200 in-lb (16.7 ft-lb). Bolt must protrude past end of nyloc nut after torque.

6.Damper

7.Damper must move freely on bolt.

Adjust Seat Switch

1.If necessary, adjust the seat actuator rod length to where the machine will shut off when the operator raises off the seat (with brake disengaged or PTO engaged) but will continue to run with operator in seat (a slight shift in weight should not shut machine off).

Normal adjustment is when length of spring is 2.09 inches (5.3 cm) (with seat up).

Note: To prevent the engine from cutting out when operating over rough ground, the unit is equipped with a time-delayed seat switch. When the operator raises off the seat with either the brake disengaged or the PTO engaged, the engine should stop after 1/2 second has elapsed.

2.To adjust seat switch actuator rod length, loosen lock nut on bottom of the actuator rod (5/16 x 7 inch bolt) and adjust the nuts to move the actuator plate/washer up or down on the rod, then retighten.

Figure 23

1.Spring disc washers

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