Cub Cadet PRO HW 348 Operation Manual - Page 17
Replacing the Deck Belt, Replacing the Blades, Sharpening the Blades
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Replacing the Deck Belt 1. Set the parking brake. Remove ignition key and both spark plug caps. 2. Remove the deck, (refer to Deck Removal). 3. Remove the wing knobs (a) securing the belt covers (b) to the deck. See Figure 4-14. (a) (a) Replacing the Blades WARNING Before performing any maintenance, disengage the PTO, engage the parking brake lever, turn the ignition key to the "OFF" position and remove the key from the switch. Protect your hands by using heavy gloves when handling the blades. When servicing the mower deck, be careful not to cut yourself on the sharpened blades. 1. Remove the deck as instructed in the Deck Removal section. 2. Jack up the front of the mowing deck about one foot and block it in that position. 3. Wrap a rag around one end of the blade (a) and grasp it to prevent it from turning, or secure the blade (a) by placing a block of wood (b) between the blade (a) and the deck housing (c). See Figure 4-17. Sharpening the Blades 1. Set the parking brake. 2. Clean any debris from the blades. Keep blades sharp and free of build up at all times. 3. 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°-30° angle. Always grind each cutting blade edge equally to maintain proper blade balance. See Figure 4-18. Figure 4-14 4. The speed nut should hold the carriage screw in place. 5. Remove the belt from around the pulleys. On 36" decks, a belt keeper rod (a)will also need removed. Remove the two bolts securing the belt keeper rod (a) to the deck. See Figure 4-14. (a) Figure 4-15 WARNING Avoid pinching injuries. Never place your fingers on the idler spring or between the belt and a pulley while removing the belt. 6. Route the new belt as shown in Figure 4-15 for 36" decks and Figure 4-16 for 48" and 54" decks.. Then reinstall the deck. (c) (d/e) (b) (a) Figure 4-17 4. Remove the flange lock nut (d) and flat washer (e) at the blade (a) and remove the blade. 5. To replace the blade reverse the above process and tighten nut to 90-110 ft-lbs. Note: When replacing the blade, be sure to install the blade with the side of the blade marked ''Bottom'' or "Grass Side" (or with a part number stamped in it) facing the ground when the mower is in the operating position. Note: Add a small amount of multipurpose grease to the bolt threads to avoid corrosion and galvanic action. WARNING Never mow with dull blades. Blades that are bent should be replaced. The cutting blades are sharp and can cause severe injury. Wrap the cutting surface of the blade with a rag to avoid injury. Figure 4-18 WARNING If a blade is bent or otherwise damaged, replace the blade with a new one. Use only original equipment blades. WARNING A poorly balanced blade will cause excessive vibration, may damage the machine and/or result in personal injury. 4. 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 "Grass Side" (or with a part number stamped in it) facing the ground when the mower is in the operating position. WARNING Use a torque wrench to tighten the blade spindle hex flange nut to between 90-110 ft-lbs. Figure 4-16 Section 4 - Product Care 17