Tracking Adjustment, PTO Drive Pulley Alignment

Maintenance

Figure 19

1.To increase steering responsiveness hook pump control sprints directly on anchor bolt.

To decrease steering responsiveness hook pump control springs on anchor tabs as shown.

Tracking Adjustment

See Motion Control Linkage Adjustment section

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

•The blower has been removed or replaced.

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

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

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

2.Move the speed control lever to the neutral position.

3.Disengage the PTO lever.

4.Remove fuel tank mounting nuts and swing out fuel tank.

5.Verify that the blower is installed and secured tightly.

6.Loosen the 4 engine mounting bolts.

7.Unhook the pump belt tension spring.

8.Loosen the 4 jackshaft mounting bolts.

9.Measuring from the blower pulley as a baseline, move the engine and jackshaft until the rear surface of all 3 pulleys are aligned within 1/32

inch to 1/16 inch (0.8-1.6 mm). Use a straight edge to align all three surfaces (see Figure 20).

Figure 20

10.Tighten the four engine mounting bolts and four jackshaft mounting bolts. Check alignment after tightening.

11.Re-install pump belt tension spring.

12.Swing fuel tank in and re-install tank mounting nuts.

13.Complete the Pump Drive Pulley Alignment section.

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 has been performed (see PTO Drive Pulley Alignment section).

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

2.Loosen set screws on both pump pulleys.

3.Using a straight edge, align each pump pulley with the engine pulley by sliding along the pump shaft (see Figure 20).

4.Re-tighten pulley set screws and recheck alignment.