Mower Decks - Gravely Pro-Turn 100 Operator's Manual

Replacing the Hydro Pump Belt
(Figure 23)
1. Properly stop and park unit (see
Operation on page 15).
2. Remove the PTO belt from the mower
clutch sheave (see Replacing Mower
Belts on page 30).
CAUTION: Use care when releasing
idler spring tension. Keep body parts
well away from idlers when
performing this operation.
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.
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 30.
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6
3
4
1. Hydro Belt
2. Spring
3. Idler
4. Engine Sheave
5. Right Hand Hydrostat
6. Left Hand Hydrostat
7. Clutch
8. Clutch Anchor

MOWER DECKS

Anti-scalp Roller Adjustment
The anti-scalp rollers are set at the factory for
typical mowing height, but can be adjusted for
high or low cutting conditions (Figure 24).
Anti-Scalp rollers are intended to prevent
lawn scalping, not to control cutting height.
For a very high cutting height, set the anti-
scalp rollers in the lowest position on the
bracket.
For a very low cutting height, set the anti-
scalp rollers in the highest position on the
bracket.
NOTE: There are four anti-scalp rollers on
the outside of the mower deck and four anti-
scalp rollers on the inside of the mower deck.
Make sure all anti-scalp rollers are set at the
same height.
EN - 31
1
Figure 23
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7
8