Pump Drive Belt Replacement; Belt Guide Adjustment - Exmark NAVIGATOR Operator's Manual

Figure 25
1. Tension Arm
2. Loosen jam nuts
3. When PTO is engaged, align top of idler arm with bottom
of notch on tension arm, as shown.
4. Idler Arm
13. Tighten jam nuts and disengage PTO lever.
Re-engage PTO lever and check alignment.
14. Check and adjust belt guides as stated in Belt
Guide Adjustment section.
Pump Drive Belt
Replacement
1. Stop engine, wait for all moving parts to stop, and
remove key. Engage parking brake.
2. Remove PTO Belts. See PTO Belt Replacement
section for removal instructions.
3. Pull spring idler or remove spring to relieve pump
drive belt tension. Remove old belt.
4. Route new belt onto sheaves as shown in the
decal located on the back of the left drive shield
(see Figure 26).
1. Pump Drive Belt
2. Pump
3. Idler
5. Reinstall PTO Belts as stated in the PTO Belt
Replacement section

Belt Guide Adjustment

1. Stop engine, wait for all moving parts to stop, and
remove key. Engage parking brake.
2. Engage PTO lever.
3. Adjust belt guides as shown in Figure 27.
1. 1/8 inch (3 mm)
2. 7/16 inch (11 mm)
3. 1/8 inch (3 mm)
Clearance
41
Maintenance
Figure 26
4. Pump
5. Idler
6. Engine
Figure 27
4. Rotate wireform guide to
center belts in guide.
5. 1/4 inch (6 mm)
6. 5/16 inch (8 mm)