Maintenance Instructions | CHECKING/SERVICING |
Tire Pressure
Inflate tires to pressures shown below:
Deck Caster Wheel = 20 PSI (137 kPa)
Drive | = | 15 PSI (103 kPa) |
Rear | = | 20 PSI (137 kPa) |
Wheel Bolt Torque
Every 100 hours check the eight (8) lug bolts that mount the drive tires. They should be torqued to 75 to 85
Sharpen Mower Blades
Check mower blade(s) for straightness, sharp- ness, condition of the cutting edge, and balance every 10 hours of operation (or more often when mowing abrasive type grass or operating on sandy soils). Replace blades if worn, bent, cracked, or otherwise damaged (refer to REPLACING/RE- PAIRING the Mower Blades in this section). Use the following procedure to check and sharpen blades:
NOTE: Keep blades sharp - cutting with dull blades not only yields a poor mowing job but slows the cutting speed of the mower and causes extra wear on the engine and blade drive by pulling hard.
1.Stop the engine, remove ignition key, and dis- connect the spark plug wires before raising the mower deck to service blades.
2.Raise the deck and secure it in the
DANGER
NEVER operate cutter blades with the deck in the raised position.
NOTE: PTO shaft must be disconnected before checking blades for straightness.
3.Check the blades for straightness by marking the blade tip position inside the deck housing, and then rotating the opposite end of the blade to the same position and comparing. If the dif- ference in blade tip track is more than 1/8 in. (3 mm), the blade is bent and should be re- placed.
WARNING
DO NOT try to straighten a blade that is bent. NEVER weld a broken or cracked blade. ALWAYS replace with a new blade to assure safety.
4.If the blade cutting edge is dull or nicked, it should be sharpened. Remove blades for sharpening by grasping the end of the blade us- ing a rag or a thick, padded glove, while loosen- ing and removing the nut, lock washer, and flat washer that mounts the blade.
5.Grind cutting edge at the same bevel as the original. Sharpen only the top of the cutting edge to maintain sharpness.
NOTE: Blades can be sharpened with an elec- tric blade sharpener, conventional electric grind- er, or a hand file.
CAUTION
ALWAYS wear eye protection and gloves when sharpening a blade.
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| Intersection |
Sharpen at | ||
Original 30° Angle |
| Wear Area |
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30° | Wing | |
Tip | ||
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Do Not Grind or
Sharpen on Underside
Mower Blade Profile for Sharpening
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