Adjustments; Pto Drive Belt Tension; Pump Drive Belt Tension; Pto Belt Replacement - Exmark NAVIGATOR Operator's Manual

Adjustments

Note: Disengage PTO, shut off engine, wait for
all moving parts to stop, engage parking brake, and
remove key before servicing, cleaning, or making any
adjustments to the unit.

PTO Drive Belt Tension

Self-tensioning - No adjustment necessary.

Pump Drive Belt Tension

Self-tensioning - No adjustment necessary.

PTO Belt Replacement

1. Stop engine, wait for all moving parts to stop, and
remove key. Engage parking brake.
2. With engine "off ", engage PTO lever, then
remove the hairpin and clevis pin at the bottom
of the PTO brake band.
3. Rotate the brake band upwards out of the way of
the belts keeping clear of the belt drive.
4. Disengage PTO lever.
5. Loosen belt guides "A" and "B" (See Figure 8).
6. Remove current belts
7. Route new belts onto sheaves as shown in the
decal located on the back of the left drive shield
(see Figure 8).
Figure 8
1. Idler
2. Belt Guide "B"
3. PTO Belt
4. Jackshaft
8. Engage the PTO lever
9. Rotate brake band back down into original
position
5. Engine
6. Belt Guide "A"
7. Blower
10. Re-install clevis pin and hairpin to secure brake
band.
11. Engage the PTO lever.
12. Loosen the jam nuts and adjust linkage until the
top of the idler arm is aligned with the bottom of
notch on tension arm as shown in Figure 9.
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 10).
29
Maintenance
Figure 9