j)Tighten the 4 engine mounting bolts and 4 jackshaft mounting bolts. Check alignment after tightening.

k)Re-install pump belt tension spring.

l)Swing fuel tank in and re-install tank mounting nuts.

m)Complete Pump Drive Pulley Alignment Section 5.2.13.

5.2.13Pump Drive Pulley Alignment

Pump drive pulley alignment is necessary for any of the following conditions:

The engine mounting bolts have been loosened or the engine has been moved or replaced.

The pump pulleys have been loosened, moved, or replaced.

The PTO pulley alignment (Section 5.2.11) has been performed.

a)Stop engine, wait for all moving parts to stop, and remove key.

b)Loosen set screws on the both pump pulleys.

c)Using a straight edge, align each pump pulley with the engine pulley by sliding along the pump shaft. See Figure 19.

d)Re-tighten pulley set screws and recheck alignment.

5.2.14Rear caster pivot bearings pre-load adjustment.

a)Remove dust cap from caster and tighten

nyloc nut until washers are flat. Back the nyloc off 1/4 of a turn to properly set the pre-load on the bearings.

Note: If disassembled, make sure the spring washers are reinstalled as shown in Figure 20

5.2.15 Hopper Door Adjustment:

FIGURE 20

CASTER ADJUSTMENT

Door Closing:

 

a)Loosen 6 door hinge nuts. See Figure 21.

b)Open door and place a 3/8” rubber strip or 3/8” diameter hose between the hopper and hopper door. See Figure 20.

c)Close door and push tight against hopper.

d)Tighten hinge hardware. Open hopper door and remove rubber strip.

FIGURE 21

HOPPER DOOR ADJUSTMENT

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Exmark NAV27KC, NAV20KC manual Door Closing, Hopper Door Adjustment