Replacing Mower Blade; Sharpening Mower Blade - Ariens Zoom 915157 Owner's/Operator's Manual

REPLACING MOWER BLADE

Remove
(Figure 16)
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 16)
1. Install mower blades on spindles with
mounting hardware.
2. Torque 5/8" nut to 100 to 120 lbf-ft (136
to 163 N•m).
1
1. Spindle
2. Blade
3. Washer
4. 5/8" Nut
Figure 16

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.
Ariens recommends having mower blades
sharpened by a professional. Contact your
Ariens dealer.
Discard mower blade if (Figure 17):
Do not change angle of cutting edge or round
the corner at the end of mower blade.
2
DO NOT Sharpen to this Pattern
3
4
Sharpen to this Pattern
Discard if
more than
1/2"
(1.27 cm)
1. Air Lift Erosion
2. Cutting Edge
EN - 25
1. Remove mower blade from unit. See
"REPLACING MOWER BLADE" on
page 25.
• more than 1/2" (1.27 cm) of metal is
removed.
• the air lift erosion area is eroded.
• the mower blade is bent or broken.
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
"REPLACING MOWER BLADE" on
page 25.
1
Figure 17
2