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EN - 28
Replacing the Hydro Pump Belt
1. Properly stop and park unit (See
Operation on page 14).
2. Remove the PTO belt from the mower
clutch sheave (See Replacing Mower
Belts on page 27).
3. Slowly release the tension on the hydro
pump belt idler until all the tension is
removed from the springs.
4. Remove old hydro pump belt from right
hand hydrostat sheave first (Figure 18).
5. Install new hydro pump belt by
positioning belt on sheaves. Put belt
onto right hand hydrostat sheave last.
6. Replace long mower belt on mower
clutch sheave. See Replacing Mower
Belts on page 27.
Figure 16
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
1
2
4
7
6
5
3
Figure 17
The PTO idler spring length range is
12.25 – 12.5" (31 – 31.8 cm) measured at
a 3" (7.62 cm) cutting height. Adjust as
necessary.
Measure PTO
idler spring
length here.
PTO Idler Spring Length
CAUTION: Use care when
releasing idler spring tension.
Keep body parts well away from
idlers when performing this
operation.
1. Hydro Belt
2. Spring
3. Idler
4. Engine Sheave
5. Right Hand Hydrostat
6. Left Hand Hydrostat
7. Clutch
8. Clutch Anchor
Figure 18
6
1
5
2
7
8
4
3