Ariens Pro 21 Specifications download pdf (Page 17)

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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

(Figure 13).

4. Install mower blade on unit.

5. Tighten the bolts to a torque of 37.5 -

50 lbf-ft (51-68 N•m).

CHECK DRIVE BELT (SELF-

PROPELLED MODELS)

Check drive belt and replace if worn or

damaged. See DRIVE BELT

REPLACEMENT on page 19.

CHECK FASTENERS

Check all fasteners for proper tightness. Pay

special attention to blade hardware and all

guards, shields and safety devices.

CHECK AIR CLEANER

See engine manual for specific information.

CHANGE ENGINE OIL

IMPORTANT: Change engine crankcase oil

after first five (5) hours of operation. Then

change oil after every 25 hours of operation.

Refer to engine manual for instructions and

proper oil type.

IMPORTANT: Proper oil level must be

maintained at all times or engine damage will

result. DO NOT overfill. Be sure engine is

level when adding oil.

Figure 12

1. Square Corner

2. Cutting Edge

3. Air Lift

4. Air Lift Erosion

Sharpen to This Pattern

DO NOT Sharpen to This Pattern

DISCARD If More

Than 1/2 in. (1.27 cm)

2

1

3

2

3

4

OT0792

Figure 13

OA0013

Bolt

Blade

1 2 ... 12 13 14 15 16 17 18 19 20 21 22 ... 27 28

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