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Resumen del manual
It does not require checking. If disassembled for any reason, fill with 2 ounces of Alvania grease, part number 737-0168. A MAINTENANCE WARNING: Be sure to disconnect and ground the spark plug wire before performing any repairs or maintenance. NOTE: When tipping the unit, empty the fuel tank and keep engine spark plug or air cleaner side up. TROUBLE SHOOTING Refer to page 10 of this manual for trouble shooting information. CUTTING BLADE When removing the cutting blade for sharpening or replacement, protect hands by using heavy gloves or a rag to grasp the cutting blade. Remove the bolt and bell washer which hold the blade and adapter to the engine crankshaft. Remove the blade and adapter from the crankshaft. 7 If the blade or blade adapter needs replacing, remove the two small bolts, lock washers and nuts which hold the blade to the adapter. A WARNING: Periodically inspect the blade adapter for cracks, especially if you strike a foreign object. Replace when necessary. When sharpening the blade, follow the original angle of grind as a guide. It is extremely important that each cutting edge receives an equal amount of grinding to prevent an unbalanced blade. An unbalanced blade will cause excessive vibration when rotating at high speeds, may cause damage to the mower and could break, causing personal injury. It is recommended that the blade always be removed from the adapter for the best test of balance. The blade can be tested by balancing it on a round shaft screwdriver. Remove metal from the heavy side until it balances evenly. Before reassembling the blade and the blade adapter to the unit, lubricate the engine crankshaft and the inner surface of the blade adapter with light oil. Lubricating the bolt holes, bolts and inner surface of the nuts with light oil is also recommended. A 4 oz. plastic bottle of light oil lubricant is available. Order part number 737-0170. Engine oil may also be used. When replacing the blade, be sure to install the blade with the side of the blade marked “Bottom” (or with part number) facing the ground when the mower is in the operating position. Blade Mounting Torque Center Bolt: 450 in. lbs. min., 600 in. lbs. max. Blade Adapter Bolts: 200 in. lbs. min., 350 in. lbs. max. To insure safe operation of your unit, all nuts and bolts must be checked periodically for correct tightness. DECK The underside of the mower deck should be cleaned after each use to prevent a buildup of grass clippings, leaves, dirt or other matter. If this debris is allowed to accumulate, it will invite rust and corrosion, and may prevent proper mulching. The deck may be cleaned by tilting the mower and scraping clean with a suitable tool (make certain the spark plug wire is disconnected). ENGINE Refer to the separate engine manual for all engine maintenance instructions. Maintain engine oil as instructed in the separate engine manual packed with your unit. Read and follow instructions carefully. Service air cleaner every 25 hours under normal con* ditions. Clean every few hours under extremely dusty conditions. Poor engine performance and flooding usually indicates that the air cleaner should be serviced. To service the air cleaner, refer to the separate engine manual packed with your unit. The spark plug should be cleaned and the gap reset once a season. Spark plug replacement is recommended at the start of each mowing season; check engine manual for correct plug type and gap specifications. Clean the engine regularly with a cloth or brush. Keep the cooling system (blower housing area) cleaned to permit proper air circulation which is essential to engine performance and life. Be certain to remove all grass, dirt and combustible debris from muffler area. BELT REMOVAL AND REPLACEMENT 1. Place shift lever in third speed. 2. Disconnect the spark plug wire and ground it against the engine. 3. Drain the fuel tank or place a piece of plastic beneath the cap to prevent gasoline leakage. 4. Remove the transmission belt cover by removing three bolts. See figure 11. FIGURE 11. 5. Tip the mower on its side. Block securely. 6. Remove the center bolt which secures the blade to the crankshaft. See figure 12. Remove the blade and blade adapter. 7. Remove the two self-tapping screws which secure the lower pulley half. See figure 12. 8. Rotate the lower pulley half 90° clockwise (see figure 13) and remove from mower. Remove the belt from around the crankshaft. 8 Lower FIGURE 12. FIGURE 13. 9. Remove the belt from between the idler pulley and the belt guard on the idler pulley bracket. See figure 14. 10. Remove the belt from the transmission pulley. 11. Assemble the new belt as follows. A. Push the idler pulley up out of the way as shown in figure 14. B. Slide the belt in from the rear of the deck, and place it around the transmission pulley. See figure 14. C. Release the idler pulley so it falls down into position. Slide the belt in between the idler pulley and belt guard on ...