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Resumen del manual
1. Disconnect spark plug wire. 2. Remove the deck belt cover. 3. Support front of unit to allow access to underside of the machine near the engine. Note: Unit is heavy. Be sure support is adequate to prevent personal injury. 4. Observe the orientation of the belt fi ngers (Item 71) under the engine. 5. Remove the 4 engine mount bolts (Item 48) 6. Remove the left and right belt fi ngers (These fi ngers are interchangeable). 7. Observe the orientation of the belt fi nger (Item 90) on idler (Item 91). 8. Loosen but do not remove idler/belt fi nger retaining nut (Item 144). 9. Observe belt routing and remove the belt from front spindle pulley (Item 46). 10. Remove the belt from the idler pulley and from the engine pulley. 11. Install new belt on engine pulley, idler and front spindle pulley following the original belt routing. 12. Position the idler belt fi nger centered on idler bracket and tighten the retaining nut (Item 144). 13. Reinstall the left and right belt guide fi ngers under the engine base using all fasteners in the exact order they were removed. NOTE: Before installing the fasteners inspect them for wear and replace as necessary. 14. Torque the four engine bolts to 40 ft-lbs. Note: With clutch levers engaged, be sure belt guides do not touch belts after installation. 50 105 171 24 37 171 23 85 171 22 19 26 Figure 17-5 17.4 BLADE REMOVAL / SHARPENING Part No. 520141 Page 13 of 20 Form No. F061604A Spindle Drive Belt Tools required: 3/8 inch socket, 1/2 inch socket. 1. Disconnect spark plug wire. 2. Follow steps to remove the Blade Drive Belt (on the spindle pulley side only) from the previous section. 3. Loosen the two idler plate nuts (Item 143). 4. Slide the belt idler to release the belt tension. 5. Observe the belt routing, then remove the old belt and install the new belt using the original routing. 6. Tension the belt using a long screwdriver or other pry bar to push the idler pulley against the belt. Note: Take care not to damage the idler pulley. 7. Tighten the two idler plate nuts just enough to avoid slippage while checking the belt tension. 8. Check belt defl ection. Finger pressure should give 0.5” to 0.75” (see fi gure 17-8). 9. Increase/decrease belt tension for proper defl ection. 10. Finish Tightening the two idler plate nuts. 11. Follow steps to reinstall Blade Drive Belt from the previous section. 11. Replace cover. 12. Reconnect spark plug wire. 17 MAINTENANCE continued Transaxle Drive Belt Replacement Tools required: 1/2 Wrench or ratchet and 1/2 inch socket, adequate support for machine. 1. Remove the Blade Drive Belt (Steps 1-10: Blade Drive Belt Replacement Procedure). 2. Assure that spark plug wire is disconnected. 3. Support rear of unit to allow access to underside of the machine near the rear. Note: Unit is heavy. Be sure support is adequate to prevent personal injury. 4. Observe the belt fingers Item 63), position of idler and belt routing. 5. Remove the belt fi nger retaining nuts and bolts (Items 126 and 143). 6. Move the belt finger and remove the belt from the transaxle pulley (Item 48). 7. Remove the belt from the drive idler (Item 105). 8. Remove the belt from the engine drive pulley (Item 85). 9. Install new belt on the top (small) engine pulley, drive idler and transaxle pulley using the original belt position and routing. 10. Reposition and secure the belt fi nger using the original bolts, washers and nuts. NOTE: Before installing the fasteners inspect them for wear and replace as necessary. 11. Reinstall the Blade Drive Belt (Steps 11-16: Blade Drive Belt Replacement Procedure). Note: With clutch levers engaged, be sure belt guides do not touch belts after installation. 12. Replace the cover 13. Reconnect spark plug wire. 14. Start engine and check both belts for proper operation of blade drive system and mower drive system. WARNING: If the drive clutch begins to squeal or slip, do not continue to operate your unit until adequate adjustment or repair has been performed. Improper adjustment can cause drive clutch to slip and overheat, greatly reducing machine performance and transmission life. 17.5 BELT REPLACEMENT continued Figure 17-8 Figure 17-7 13. Reinstall the left and right belt guide fi ngers under the engine base using all fasteners in the exact order they were removed. NOTE: Before installing the fasteners inspect them for wear and replace as necessary. 14. Torque the four engine bolts to 40 ft-lbs. Note: With clutch levers engaged, be sure belt guides do not touch belts after installation. 15. Observe the idler pulley when the blade drive lever is lowered and released (see fi gure 17-7). NOTE: Idler should tighten the belt when blade drive lever is pressed and the belt should be slack when the lever is released. With the lever depressed, the edge of the belt guide should not rub on the belt. 16. Replace the cover 17. Reconnect spark plug wire. 18. Start engine and check for proper operation of blade drive system. Blade Drive Belt Replacement continued...
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