Craftsman 28970 Operation Manual - Page 23

TO REPLACE MOWER BLADE DRIVE BELT The mower blade drive belt may be replaced without tools. Park the tractor on level sur- face. Engage parking brake. BELT REMOVAL- 1. Remove mowerfrom tractor (See"TO REMOVE MOWER"inthis section of manual). 2. Work belt off both mandrel pulleys and idler pulleys. 3. Pull belt away from mower. BELT INSTALLATION - 1. Work belt around both mandrel pulleys and idler pulleys 2. Make sure belt is in all pulley grooves and inside all belt guides. 3. Install mower (See "To Install Mower" in this section of this manual). Mandrel Idler Pulle' Mandrel TO CHECK BRAKE If tractor requires more than five (5) feet to stop at highest speed in highest gear on a level, dry concrete or paved surface, then brake must be serviced. You may also check brake by: 1. Park tractor on a level, dry concrete or paved surface, depress brake pedal all the way down and engage parking brake. 2. Disengage transmission by placing freewheel control in "transmission disen- gaged" position. Pull freewheel control out and into the slot and release so it is held in the disengaged position. The rear wheels must lock and skid when you try to manually push the tractor forward. If the rear wheels rotate, then the brake needs to be serviced. Contact a Sears or other qualified service center. BELT REMOVAL- 1. Remove mower (See "TO REMOVE MOWER" in this section of manual). NOTE: Observe entire motion drive belt and position of all belt guides and keepers. 2. Disconnect clutch wire harness (A). 3. Remove anti-rotation side of tractor. link (B) on right 4. Remove belt from stationary idler (C) and clutching idler (D). 5. Remove belt from centerspan idler (E). 6. Pull belt slack toward rear of tractor. Carefully remove belt upwards from transmission input pulley and over cooling fan blades (F). 7. Remove belt downward from engine pulley and around electric clutch (G). 8. Slide belt toward rear of tractor, off the steering plate (H) and remove from tractor. BELT INSTALLATION - 1. Install new belt from tractor rear to front, over the steering plate (H) and above clutch brake pedal shaft (J). 2. Pull belt toward front oftractor and roll belt around electric clutch and onto engine pulley (G). 3. Pull belt toward rear of tractor. Carefully work belt down around transmission cooling fan and onto the input pulley (F). Be sure belt is inside the belt keeper. 4. Install belt on centerspan idler (E). 5. Install belt through stationary idler (C) and clutching idler (D). 6. Reinstall anti-rotation link (B) on right side of tractor. Tighten securely. 7. Reconnect clutch harness (A). 8. Make sure belt is in all pulley grooves and inside all belt guides and keepers. 9. Install mower (See "TO INSTALL MOWER" in this section of manual). TO REPLACE MOTION DRIVE BELT Park the tractor on level surface. Engage parking brake. For assistance, there is a belt installation guide decal on bottom side of left footrest. 23