Section 6 - Mower Deck; Replacing Mower Blade; Sharpening Mower Blade; Replacing The Pto Belt - Gravely 915 Mini-ZT Service Manual

6.1 REPLACING MOWER BLADE

Remove (Figure 15 )
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 mower deck.
Install
1. Install mower blades on mower deck with mounting
hardware.
2. Torque 5/8-inch hex bolt to 80 to 120 lbf-ft (108 to
163 Nm).
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4
Figure 15

6.2 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).
Ariens recommends having mower blades sharpened
by a professional. Contact your Ariens dealer.
Discard mower blade if (Figure 16 ):
• 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.

SECTION 6 - MOWER DECK

1. Flat Washer
2. Bevel Washer
3. 5/8-inch Hex Bolt
4. Mower Blade
2
3
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 Replacing Mower
Blade).
DO NOT Sharpen to this Pattern
Sharpen to this Pattern
Discard if more
than 1/2 in.
(1.27 cm)
1. Air Lift Erosion Area
2. Cutting Edge

6.3 REPLACING THE PTO BELT

PE0039
Remove (Figure 17 )
1. Lower mower deck to the ground.
2. Remove belt covers from mower deck
CAUTION: Use care when releasing idler
spring tension. Keep body parts well away
from idler when performing this operation.
3. Pull idler arm towards outside of unit until tension is
removed from PTO belt.
4. Remove PTO belt from left mower deck pulley.
5. Slowly release idler arm until tension is removed
from idler spring.
Install
NOTE: Do not install PTO belt on left mower deck pul-
ley in step 1.
1. Install PTO belt on electric clutch and mower deck.
2. Pull idler arm towards outside of unit until PTO belt
can be routed around left mower deck pulley.
6 - 17
1
2
Figure 16
OE0052