Section 4 - ADJUSTMENTS & REPAIR
4.5MOWER BLADE REPAIR/REPLACEMENT
4.5.1.BLADE WEAR LIMITS
1. Inspect blade frequently for signs of excessive wear or damage. See Figure 4.5.
NEW BLADE
2.Inspect condition of blade. See Figure 4.5.
3.If blade is in good condition, sharpen at
22to 28 degrees. DO NOT sharpen beyond existing cutting edge. See Figure 4.7.
WARNING
Wear heavy leather gloves when handling or working around cutting blades. Blades are extremely sharp and can cause severe injury. DO NOT use a cutting blade that shows signs of excessive wear or damage.
WEAR LIMIT (NOTCH STARTS)
DANGEROUS CONDITION!
DO NOT USE ON MOWER!
REPLACE WITH NEW BLADE.
FIGURE 4.5
WARNING
DO NOT use a cutting blade that shows signs of excessive wear or damage. See Figure 4.5. Wear heavy leather gloves when handling or working around cutting blades. Blades are extremely sharp and can cause severe injury.
4.5.2.BLADE SHARPENING
1. Remove blade. See Figure 4.6.
AIR LIFT
(4)BLADE SPACERS
BLADE
BEVELED
WASHER
MOUNTING
BOLT
22º TO 28º
BLADE
BLADE TIP
ORIGINAL CUTTING EDGE
FIGURE 4.7
4.Check blade balance after sharpening. If necessary, correct blade balance by grinding the heavy end of blade. IMPORTANT: Blade balancing should be performed by a qualified dealer.
5.Reinstall blade. See Figure 4.6. Torque blade mounting bolts to recommended range of 70 to 80 ft. lbs.
4.6MOWER DRIVE BELT REPLACEMENT
Inspect mower drive belt. Replace belt if it shows signs of excessive wear, damage and/or is broken.
WARNING
DO NOT attempt any adjustments, maintenance or service with the engine or blades running. Stop blades. Stop engine. Set brake. Remove key. Remove spark plug wires from spark plugs and (gas only) secure wires away from spark plugs. Engine and components are HOT. Avoid serious burns by allowing all parts sufficient time to cool.
4.6.1.ENGINE BELT REMOVAL
1.Remove mower drive belt cover.
2.Remove old belt.
FIGURE 4.6
16
