Section 4 - ADJUSTMENTS & REPAIR
4.5 MOWER 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
\. ",-L'b
._ "_ WEAR LIMIT
_ (NOTCH STARTS)
DANGEROUS CONDITION!
_ DONOTUSEONMOWER_
REPLACE WITH NEW BLADE.
FIGURE 4.5
_k, 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.
__ BLADE
BEVELED
WASHER
MOUNTING
BOLT
2. Inspect condition of blade.
See Figure 4.5.
3. If blade is in good condition, sharpen at
22 to 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.
BLADE
\
22 ° TO 28 °
BLADE TIP
ORIGINAL CUTTING EDGE
FIGURE 4.7
4.6
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. Ibs.
MOWER DRIVE BELT REPLACEMENT
Inspect mower drive belt. Replace belt if it shows
signs of excessive wear, damage and/or is broken.
WARNING _L,
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
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