Ariens 991040 - Zoom 2660 HD User Manual download pdf (Page 20)

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Sharpen the Mower Blades

1. Remove mower blade from unit.

Discard mower blade if:

• More than 1/2 in. (1.27 cm) of metal is

removed.

• Air lifts become eroded.

• Blade is bent or broken.

2. Sharpen mower blade by removing an

equal amount of material from each end

of mower blade. DO NOT change angle

of cutting edge or round the corner of the

mower blade.

3. Check mower blade balance.

Slide mower blade on an unthreaded

bolt. A balanced blade should remain in

a horizontal position. If either end of

mower blade moves downward, sharpen

the heavy end until blade is balanced.

4. Install mower blade(s) on unit.

5. Tighten the bolts to a torque of 115-125

lbf-ft (156-169.5 N•m).

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.

Figure 9

1. Blade

2. Cup Washer

3. Bolt

1. Cutting Edge

2. Square

Corner

3. Air Lift

Erosion

4. Air Lift

OT0792

Figure 10

DO NOT Sharpen to This Pattern

Sharpen to This Pattern

DISCARD if More Than

1/2 in. (1.27 cm)

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Ariens 991040 - Zoom 2660 HD User Manual Page 20

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