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. Be
extremely careful when performing adjustments around engine. Engine is extremely hot and can cause severe
burns. Wear heavy leather gloves when handling or working around cutting blades. Blades are extremely sharp and can cause severe injury.
4.1MOWER BLADE REPAIR/REPLACEMENT 4.1.1. STANDARD BLADE WEAR LIMIT
1.Inspect blade frequently for signs of excessive wear or damage. See Figure 4.1.
NEW BLADE
WEAR LIMIT (NOTCH STARTS)
DANGEROUS CONDITION !
DO NOT USE ON MOWER !
REPLACE WITH NEW BLADE.
FIGURE 4.1
WARNING
Never use a cutting blade that shows signs of excessive wear or damage. Refer to Section on MOWER BLADE REPAIR/REPLACEMENT for proper blade inspection and service procedures.
4.1.2. BLADE SHARPENING
1.Disconnect spark plug wire and secure end away from plug.
IMPORTANT: DO NOT tip machine with carburetor or spark plug down, oil from crank case will saturate the air filter and cause the engine to hard start or not start at all. If contamination does occur the air filter will have to be replaced.
2.Tilt mower up on its rear wheels.
3.Remove blade. See Figure 4.2.
4.Sharpen blade on a grinding wheel at an angle of 22 to 28 degrees. DO NOT sharpen blade beyond the original cutting edge. See Figure 4.3.
MAKE SURE THAT
BLADE HUB IS
SEATED
BLADE BETWEEN
HUBFLANGES
FLANGE
BLADE
CONE WASHER (Widest Part Up)
CAPSCREW
FIGURE 4.2
NOTE: DO NOT
SHARPEN BEYOND
ORIGINAL
CUTTING EDGE.
BLADE TIP
END VIEW
OF BLADE
ORIGINAL CUTTING EDGE
FIGURE 4.3
5.Check blade for balance. If necessary, correct balance by grinding heavy end of blade.
6.Reinstall blade. Refer to Figure 3.2. Check torque of blade retaining cap screw. Recommended torque should be 30 to 40 ft. lbs.
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