Sharpen the Mower Blades
CAUTION: DO NOT sharpen mower blades while on unit. An imbalanced mower blade will cause excessive vibration and eventual damage to unit. Check mower blade balance before reinstalling blades.
NEVER weld or straighten bent 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.
DO NOT Sharpen to This Pattern
12
3 |
|
DISCARD If More | 2 |
Than 1/2 in. (1.27 cm) |
4 | 3 | OT0792 |
|
Sharpen to This Pattern
1.Square Corner
2.Cutting Edge
3.Air Lift
4.Air Lift Erosion
Figure 14
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 15).
4.Install mower blade on unit.
5.Tighten the bolts to a torque of 37.5 - 50
Blade
Bolt 
Figure 15
OA0013
CHECK DRIVE BELT (self-
propelled models)
Check drive belt and replace if worn or damaged. See DRIVE BELT REPLACEMENT
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.
GENERAL LUBRICATION
NOTE: The mower transmission is lubricated and sealed at the factory. It should need no routine lubrication. If the transmission leaks grease, bring the mower to your local Ariens dealer for repair.
GB - 18