Gravely ZT 1334 Owner's/Operator's Manual page 21

Adjusting The Mower Deck To Adjust
Mower Blade Height And Pitch
(Figure 13):
NOTE: Adjusting the mower deck will adjust
the height and pitch of the mower blades.
1. Adjust the trunnions first and re-take the
three measurements required to level
and adjust the pitch of the mower deck.
These measurements are:
a. The distance from the mower
blades to the ground.
b. The forward pitch of the mower
blades.
c. The pitch of the mower blades
from side-to-side.
2. Repeat step 1 as needed until all three
measurements are within the tolerances
specified.
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1. Trunnion
Figure 13
REPLACING MOWER BLADE
Remove (Figure 14)
CAUTION: Mower blades are
sharp and can cut you. Wrap
the blades or wear gloves, and
use extra caution when
servicing them.
1. Block mower blades to prevent rotation.
2. Remove mounting hardware and mower
blades from spindles.
Install (Figure 14)
1. Install mower blades on spindles with
mounting hardware.
2. Torque 5/8-inch nut to 92 to 130 lbf-ft
(125 to 176 N•m).
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2. Mower Deck
1
SHARPENING MOWER BLADE
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. Remove mower blade from unit (see
REPLACING MOWER BLADE on
page 21).
Gravely recommends having mower blades
sharpened by a professional. Contact your
Gravely dealer.
Discard mower blade if (figure 15):
• more than 1/2 in. (1.27 cm) of metal is
removed.
• the air lift erosion area is eroded.
• the 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.
GB - 21
1. Spindle
2. Blade
3. Washer
4. 5/8 in. Nut
Figure 14
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