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4. Turn the return nuts clockwise to decrease the
distance or counterclockwise to increase the distance
until there is 1/16 to 1/8 in. (1.59 to 3.18 mm) between
the return nuts and trunnion.
5. Tighten return nuts together.
BELTS
Belt Access
1. Properly stop and park unit (See OPERATION on
page 12).
2. Lower the mower deck.
3. Place seat in most rearward position.
4. Remove belt covers.
5. Place foot board in open position (Figure 15).
6. Secure raised footboard with latch.
Replacing Mower Belts
NOTE: Long PTO mower belt must be removed from blade
spindle pulleys prior to removing short mower drive belt.
1. Slowly release the tension on the PTO mower belt idler
until all the tension is removed from the springs.
2. Remove PTO mower belt from left blade spindle and
remove from deck.
3. Slowly release the tension on the mower drive belt
idler until all the tension is removed from the springs.
4. Remove mower drive 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 16).
5. Arrange new mower belt(s) on deck (mower drive belt
first). Retighten short mower belt idler pivot bolt. Install
belts on sheaves. Put belts onto center sheave last.
6. Replace belt covers and return foot board to closed
position.
Replacing the Hydro Pump Belt
1. Properly stop and park unit (See OPERATION on
page 12).
2. Remove the PTO mower belt from the PTO clutch
sheave (See Replacing Mower Belts on page 22).
3. Remove clutch anchor.
4. Slowly release the tension on the hydro pump belt idler
until all the tension is removed from the springs.
5. Remove old hydro pump belt from right hand hydrostat
sheave first (Figure 17).
6. Install new hydro pump belt by positioning belt on
sheaves. Put belt onto right hand hydrostat sheave
last.
7. Replace clutch anchor.
8. Replace PTO mower belt on PTO clutch sheave. See
Replacing Mower Belts on page 22.
WARNING: MOVING PARTS can cut or amputate
body parts. ALWAYS wait for moving parts to stop
before performing maintenance or service.
CAUTION: DAMAGED OR WORN BELTS may
result in injury and/or damage to unit. Check belts
for excessive wear or cracks often.
CAUTION: Use care when releasing idler spring
tension. Keep body parts well away from idlers
when performing this operation.
Figure 15
1
2
1. Footboard in
open position
2. Frame
3. Latch
OF3580
3
CAUTION: Use care when releasing idler spring
tension. Keep body parts well away from idlers
when performing this operation.
Figure 16
1. PTO Mower Belt
2. Mower Drive Belt
3. Springs
4. Mower Drive Belt Idler
5. PTO Belt Idler
6. PTO Clutch Sheave
7. Center Sheave
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2
4
7
6
5
3