Tires; Mower Drive Belt Removal; Sharpening Mower Blade - Gravely Promaster 260Z Service Manual

2. Place a 1/2-inch ratchet driver into square hole in
idler pulley.
3
2
1
6
1. Square Hole
2. Idler Pulley
3. Crankshaft Pulley
4. Transmission Belt
Figure 13
7. While pulling idler pulley away from unit, remove
transmission belt from idler pulley.
8. Slowly release the tension on idler pulley until all
the tension is removed from spring.
9. Remove transmission belt from crankshaft pulley
and two hydrostatic pump pulleys.
Installation (Figure 13)
1. Install the new transmission belt on two hydrostatic
pump pulleys and crankshaft pulley.
2. Place 1/2-inch ratchet driver into square hole in
idler pulley.
3. While pulling idler pulley away from unit, install
transmission belt on idler pulley.
4. Slowly release the tension until idler pulley is firmly
against transmission belt.

TIRES

Before each use, make a visual check of tires. See
Specifications on page 12.
MOWER BLADE REMOVAL
NOTE: If mower is used under sandy soil conditions,
replace mower blades when air lifts become eroded
through at ends (Figure 15).
4
5
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5. Hydrostatic Pump
Pulleys
6. Spring
Removal (Figure 14)
CAUTION: Mower blades are sharp and can
cut you. Wrap mower blades or wear gloves,
and use extra caution when servicing.
1. Block mower blades to prevent rotation.
1
2. Remove bolts, washers, and mower blades from
spindle shafts.
Installation (Figure 14)
1. Install mower blades, washers, and bolts on
spindle shafts.
2. Tighten bolts to 115–125 lbf-ft (156–169 Nm).

SHARPENING MOWER BLADE

NOTE: If mower is used under sandy soil conditions,
replace mower blades when air lifts become eroded
through at ends (Figure 15).
CAUTION: DO NOT sharpen mower blades
while on unit. An unbalanced mower blade will
cause excessive vibration and eventual
damage to unit. Check mower blade balance
before reinstalling blades.
NEVER weld or straighten bent blades.
1. Remove mower blade from unit.
Discard mower blade if (Figure 15):
• More than 1/2 in. (1.27 cm) of metal is removed.
• Air lifts become eroded.
• Blade is bent or broken.
22
1. Mower Blade
2
2. Spindle Shaft
3. Washer
4. Bolt
3
4
Figure 14
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