Gravely 927064-1440 User Manual
Page 17
GB - 17
Install
1. Install mower blade on clutch.
2. Torque hex bolts to 45-55 lbf-ft
(6 - 75 N•m).
40-Inch Mower Deck (Figure 17)
NOTE: The 40-inch mower deck has two
mower blades.
Remove
1. Place mower lift lever in the highest
position.
2. Block mower blades to prevent rotation.
3. Remove mower blades and blade trays
from spindles.
Install
1. Install blade trays and mower blades on
spindles.
2. Torque 3/4 in. jam nuts to 48–72 lbf-ft
(65–97 N•m).
SHARPENING MOWER BLADE
1. Remove mower blade from unit (see
Mower Blade Replacement on page 16).
Gravely recommends having mower blades
sharpened by a professional. Contact your
Gravely dealer.
Discard mower blade if (figure 18):
• more than 1/2 in. (1.27 cm) of metal is
removed.
• air lift erosion area is eroded.
• mower blade is bent or broken.
Do not change angle of cutting edge or round
the corner at the end of mower blade.
2. Sharpen mower blade by removing an
equal amount of material from each end
of mower blade.
3. Check mower blade balance by sliding
mower blade on an unthreaded bolt. If
blade is balanced, it should remain in a
horizontal position. If either end of
mower blade moves downward, sharpen
the heavy end until mower blade is
balanced.
4. Install mower blade on unit (see Mower
Blade Replacement on page 16).
ANTISCALP ROLLER
ADJUSTMENT (927064)
IMPORTANT: Antiscalp rollers prevent lawn
scalping; DO NOT use antiscalp rollers to set
cutting height. Adjust all antiscalp rollers to
same height.
NOTE: Adjust on a level surface, with the
tires inflated to the correct air pressure (see
Specifications on page 25).
1. Select cutting height.
2. Adjust all antiscalp rollers to within 1/2
in. (1.27 cm) of ground (figure 19).
CAUTION: DO NOT sharpen mower
blade while on unit. An unbalanced
mower blade will cause excessive
vibration and eventual damage to
unit. Check mower blade balance
prior to reinstalling mower blades.
NEVER weld or straighten mower
blades.
1. Spindle
2. Blade Tray
3. Mower Blade
4. 3/4 in. Jam Nut
5. 3/4 in. Lock
Washer
Figure 17
OA0012
1
2
3
4
5
1. Air Lift Erosion
Area
2. Cutting Edge
Figure 18
OA0014
2
1
DO NOT Sharpen to this Pattern
Sharpen to this Pattern
DISCARD if
more than
1/2 in.
(1.27 cm)