Gravely Pro-Turn 991200 Owner's And Operator's Manual page 32

CAUTION: DAMAGED OR WORN
BELTS may result in injury and/or
damage to unit. Check belts for
excessive wear or cracks often.
PTO Belt Access
(Figure 20)
1. Properly stop and park unit (See
Operation on page 17).
2. Lower the mower.
3. Place seat in most rearward position.
4. Remove belt covers.
5. Place foot board in open position.
Figure 20
Replacing Mower Belts
(Figure 21)
NOTE: Long PTO mower belt must be
removed to remove short mower belt.
CAUTION: Use care when
releasing idler spring tension.
Keep body parts well away from
idlers when performing this
operation.
1. Slowly release the tension on the long
mower belt idler until all the tension is
removed from the springs.
2. Remove the belt guide bolt from the idler
arm.
3. Remove long mower belt from left blade
spindle and remove from deck.
4. Slowly release the tension on the short
belt idler until all the tension is removed
from the springs.
5. Remove short mower belt from right
blade spindle and from deck. Idler pivot
bolt must be loosened slightly to gain
clearance to remove belt from under
idler pulley (Figure 21).
6. Arrange new mower belt(s) on deck
(short belt first). Retighten short mower
belt idler pivot bolt. Install belts on
sheaves. Put belts onto center sheave
last.
NOTE: The PTO idler spring length range is
12.25 – 12.5" (31 – 31.8 cm) measured at a
3" (7.6 cm) cutting height. Adjust the idler
spring length as needed (Figure 21 and
Figure 22).
7. Replace the belt guide bolt on the idler
arm.
8. Replace belt covers and return foot
board to closed position.
3
5 8
1
6
1. PTO Mower Belt
2. Mower Drive Belt
3. Springs
4. Mower Drive Belt Idler
5. PTO Mower Belt Idler
6. Mower Clutch Sheave
7. Center Sheave
8. Belt Guide Bolt
EN - 32
Belt Layout
7
Figure 21
2
4