Exmark 4500-501 Rev A Brake Adjustment, Electric Clutch Adjustment, Reverse Indicator Adjustment

Figure 19

Brake Adjustment

1.Check for brake link 2 13/16 inches (7.1 cm) measurement as described in the Brake Link Adjustment section.

2.Engage the brake lever (lever up). The space between the brake spring bracket and the nyloc nut under the spring should measure 1/8 inch to 3/16 inch (3.2–4.8 mm).

3.If adjustment is necessary, loosen jam nut above the trunnion roller. Adjust the nyloc nut under the trunnion roller until distance listed above exists between the spring retainer bracket and the adjacent nyloc nut. Tighten the jam nut above the trunnion roller.

4.If the correct gap can no longer be achieved because there is no clearance between the nyloc nut below the spring and the jam nut above the trunnion or there are no threads left on the bottom nyloc nut, the length of the brake rod can be adjusted. Remove a pin from a yoke at either end of the brake rod and lengthen (or shorten) the brake rod until the correct gap can be achieved by following steps 2 and 3.

Electric Clutch Adjustment

No adjustment necessary.

Reverse Indicator

Adjustment

1.Stop engine, wait for all moving parts to stop, and remove key. Engage parking brake.

2.Unhook seat latch and tilt seat forward.

3.Begin with either the left or right motion control lever. Move lever to the neutral position and pull lever back until the clevis pin (on arm below pivot shaft) contacts the end of the slot (just beginning to put pressure on spring). (Figure 20).

4.Check where lever is relative to notch in console (should be centered allowing lever to pivot outward to the neutral lock position).

5.If adjustment is needed, loosen the nut against the yoke and while applying slight rearward pressure on the motion control lever, turn the head of the adjustment bolt in the appropriate direction until lever is centered (keeping rearward pressure on the lever will keep the pin at the end of the slot and allow the adjustment bolt to move the lever to the appropriate position). Tighten lock nut.

6.Repeat on opposite side of unit.

Figure 20