Section 4 - ADJUSTMENTS & REPAIR
WARNING
DO NOT attempt any adjustments, maintenance, service or repairs with the engine running. Stop engine. Stop blade. Engage parking brake. Remove key. Remove spark plug wire from spark plug and secure away from plug. Engine and components are HOT. Avoid serious burns, allow all parts to cool before working on machine. Fuel Filler Cap and Vent must be closed securely to prevent fuel spillage. 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.
4.4WHEEL BRAKE ADJUSTMENT
Adjust the wheel brake if wheels turn when parking brake is engaged. Adjust the wheel brake by turning wheel brake adjusting nut clockwise to increase braking action or counter clockwise to decrease braking action. See Figure 4.14.
ADJUST | UNDERSIDE VIEW OF MACHINE |
COUNTER- |
|
CLOCKWISE TO |
|
DECREASE |
|
BRAKE |
|
ADJUST |
|
CLOCKWISE |
|
TO INCREASE |
|
BRAKE |
|
ELECTRIC
CLUTCH
WHEEL BRAKE
ROD
FIGURE 4.14
4.5MOWER BLADE REPLACEMENT 4.5.1. BLADE WEAR LIMITS
1.Inspect blade frequently for signs of excessive wear or damage. See Figure 4.15.
NEW BLADE
WEAR LIMIT (NOTCH STARTS)
DANGEROUS CONDITION!
DO NOT USE ON MOWER!
REPLACE WITH NEW BLADE.
4.5.2. BLADE SHARPENING
1.Close vent in fuel cap and make sure cap is tight. See Figure 2.2.
2.Remove key from ignition switch. Engage parking brake.
3.Remove spark plug wire(s) and secure away from spark plug(s).
4.Raise cutting deck to highest setting.
5.With a floor jack, carefully raise front of machine to gain easier access to under deck. Block machine securely.
6.Remove blade(s). See Figure 4.16.
7.Inspect condition of blade. See Figure 4.14.
8.If blade is in good condition, sharpen at 22 to 28 degrees. DO NOT sharpen beyond existing cutting edge. See Figure 4.17.
9.Check blade balance after sharpening. If necessary, correct blade balance by grinding the heavy end of blade.
10.Reinstall blade. See Figure 4.16. Torque blade mounting bolts to recommended range of:
33” Deck - 30 to 40 ft. lbs. 38” Deck - 80 to 90 ft. lbs.
33” DECK
38” DECK
| FIGURE 4.16 |
DO NOT SHARPEN |
|
BEYOND ORIGINAL | 22º TO 28º |
CUTTING EDGE |
BLADE TIP
ORIGINAL CUTTING EDGE
FIGURE 4.15 | FIGURE 4.17 |
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