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30
SERVICE AND MAINTENANCE
Figure 21
4. To properly sharpen the cutting blades, remove equal amounts of metal
from both ends of the blades along the cutting edges, parallel to the trailing
edge, at a 25°- to 30° angle. Always grind each cutting blade edge equally to
maintain proper blade balance. See “Figure 22”.
Figure 22
CAUTION
If the cutting edge of the blade has previously been sharpened, or if any
metal separation is present, replace the blades with new ones.
WARNING
A poorly balanced blade will cause excessive vibration, may cause damage to
the tractor and/or result in personal injury.
5. Test the blade’s balance using a blade balancer. Grind metal from the
heavy side until it balances evenly.
NOTE: When replacing the blade, be sure to install the blade with the side of
the blade marked ‘‘Bottom’’ (or with a part number stamped in it) facing the
ground when the mower is in the operating position.
CAUTION
Use a torque wrench to tighten the blade spindle hex flange nut to between
70 lbs-ft and 90 lbs-ft.
Adjustments
WARNING
Never attempt to make any adjustments while the engine is running, except
where specified in the operator’s manual.
Leveling the Deck
NOTE: Check the tractor’s tire pressure before performing any deck leveling
adjustments. Refer to Tires, in this Service And Maintenance section for more
information regarding tire pressure.
Front To Rear
It is possible to adjust the pitch of the cutting deck. The front of the deck should be
between 0” (level) and ¼” lower than the rear of the deck. Adjust if necessary as
follows:
1. With the tractor parked on a firm, level surface, place the lever for lifting the
cutting deck into the middle position (3) and rotate the blade so that it is
aligned with the front and rear of the tractor.
2. Measure the distance from the front of the blade tip to the ground and the
rear of the blade tip to the ground. The first measurement taken should be
between 0” (level) and ¼” less than the second measurement. Determine
the approximate distance necessary for proper adjustment and proceed, if
necessary, to the next step.
3. Locate the flange lock nut on the front end of the PTO Lift Rod. See “Figure
23”.
• Tighten the flange lock nut to raise the front of the deck;
• Loosen the flange lock nut to lower the front of the deck.
Figure 23
Seat Adjustment
Refer to the Assembly section of this manual for seat adjustment instructions.
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