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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.
DO NOT use a cutting blade that shows signs of
excessive wear or damage on the Rear Engine Rider.
On Rear Engine Riders equipped with a grass
catcher attachment, the air lifts should be replaced
when the blade is replaced.
4.4 MOWER BLADE REPLACEMENT
4.4.1. BLADE WEAR LIMITS
1. Inspect blade frequently for signs of excessive
wear or damage. See Figure 4.11.
FIGURE 4.11
WARNING
Blades are extremely sharp and can cause severe
injuries. Wear heavy leather gloves when working on or
handling blades. DO NOT use blades that show signs
of wear or damage.
4.4.2. BLADE SHARPENING
1. Follow WARNING statement found on this page.
2. Check fuel level in tank. If over 3/4 full, remove
tank. Refer to Section “REMOVING FUEL TANK”. If
3/4 or less, proceed to next step.
3. Carefully stand Rear Engine Rider on rear bumper.
4. Remove blade. See Figure 4.12.
5. Inspect condition of blade. See Figure 4.11.
6. If blade is in good condition, sharpen at 22 to 28
degrees. DO NOT sharpen beyond existing cutting
edge. See Figure 4.13.
7. Check blade balance after sharpening. If
necessary, correct blade balance by grinding the
heavy end of blade.
8. Reinstall blade. See Figure 4.12. Torque blade
mounting bolts to recommended range of 30 to 40
ft. lbs.
FIGURE 4.12
FIGURE 4.13
NUT
LOCKWASHER
BLADE
MOUNTING
BOLTS
BLADE
DO NOT SHARPEN
BEYOND
ORIGINAL
CUTTING EDGE
22 TO 28º
BLADE TIP
ORIGINAL CUTTING EDGE
NEW BLADE
WEAR LIMIT
(NOTCH STARTS)
DANGEROUS CONDITION!
DO NOT USE ON MOWER!
REPLACE WITH NEW BLADE.