Section 4 - ADJUSTMENTS & REPAIR
WARNING
Before attempting any adjustments or repairs, STOP the engine, remove the spark plug wire from the spark plug and secure wire away from plug. Wear heavy leather gloves when handling or working around cutting blades. Blades are extremely sharp and can cause severe injury. Never use a cutting blade that shows signs of excessive wear or damage.
4.4.1.Engine Drive Belt Replacement (Standard and Stretch Type Belts) (Continued From Previous Page)
6.Remove the belt cover located under deck.
7.Standard Belt: Lift the drive disc off the idler arm and remove worn belt.
7.A. Stretch Belt: Lift the drive disc up and remove worn belt.
8.Loop one end of new belt over engine pulley and insert the other end through slot in deck. Refer to Figure 4.18 & 4.18A.
STRETCH BELT PULLEY POSITION
IMPORTANT: DO NOT tip machine with carburetor or spark plug down. Oil from crankcase will saturate the air filter and cause the engine to be hard to start or not start at all. If contamination does occur, the air filter will have to be replaced.
3. Remove the driven disc. Refer to Section on |
“Replacing Rubber Driven Disc Ring” for driven disc |
assembly removal procedure. |
4. Tilt mower up on its rear wheels and remove |
blade and blade hub. Assistance from another |
person may be necessary to hold mower in the |
tilted position. |
5. Hold the slotted end of the drive disc bolt with a |
screwdriver and remove the nut and internal tooth |
SLOT IN END
OF DRIVE DISC
BOLT
DECK BRACKET (PARTIALLY SHOWN)
DRIVE DISC
BUSHING
BOLT RETAINER
INTERNAL TOOTH 
LOCKWASHER
lock washer. See Figure 4.19. |
STANDARD BELT PULLEY POSITION
DRIVE DISC |
| |
SLOT IN END |
| |
OF DRIVE DISC | POSITION | |
BOLT | ||
SCRAPER TO | ||
| ||
| CLEAR “V” OF | |
BUSHING | PULLEY | |
|
IDLER
ARM
BOLT RETAINER
IDLER
SPRINGINTERNAL TOOTH
LOCKWASHER
DECK BRACKET (PARTIALLY SHOWN)
NUT
NUT
FIGURE 4.19
9.Loop the belt around the pulley on the bottom of the drive disc.
10.Reinstall drive disc and retaining hardware. IMPORTANT: 1) The square shoulder of the drive disc bolt must fit into the square hole of the bushing. 2) The square end of bushing must fit into the bracket slot.
11.Reinstall belt cover and tighten bolts securely.
12.Reinstall blade hub and cutter blade. Recommended torque for blade cap screw is 30 to 40 ft. lbs.
(Continued On Next Page)
FIGURE 4.19
18