Figure 7-4

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.

IMPORTANT: If the cutting edge of the blade has already been sharpened to within 1 5⁄8” from the edge, or if any metal separation is present, replace the blades with new ones. See Fig. 7-5.

Figure 7-5

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 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.

Changing the Deck Belt

WARNING! Be sure to shut the engine off, remove ignition key, disconnect the spark plug wire(s) and ground against the engine to prevent unintended starting before removing the belt.

WARNING! All belt on your tractor are subject to wear and should be replaced if any signs of wear are

present.

IMPORTANT: The V-belt found on your tractor are specially designed to engage and disengage safely. A substitute (non- OEM) V-belt can be dangerous by not disengaging completely. For a proper working machine, use factory approved belts.

To change or replace the deck belt on your tractor, proceed as follows:

1.Lower the deck by moving the deck lift lever into the bottom notch on the right fender.

2.Remove the belt guards by removing the self-tapping screws that fasten them to the deck.

3.Remove the belt keeper rod from around the engine pulley.

4.Loosen but do not remove, the idler pulley nuts. This will enable the belt to be easily removed from the idler pulleys. See Fig. 7-6.

Idler Pulleys

Idler Pulley Nuts

Figure 7-6

WARNING! Avoid the possibility of a pinching injury. Do not place your fingers on the idler spring or between the belt and a pulley while removing the belt.

22Section 7— Service