MAINTENANCE
Wear/Rotation/Replacing flail blades
After you have used your dethatcher for some time, the blades will begin to wear on the striking edge. When this happens, their dethatching performance will diminish. A new combing edge may be obtained by rotating the entire rotor shaft assembly laterally (end to end). This procedure can be repeated until the blades reach their wear limit; see illustration.
Rotate the rotor shaft as follows:
IMPORTANT INFORMATION
Only the flail blade rotor shaft can be rotated to achieve even wear.
Rotating the rotor shaft
1.Allow the engine to cool.
2.Disconnect the spark plug.
3.Remove the belt guard (see illustration).
4.Remove the belt and pulley from the rotor shaft.
5.Remove the 6 bearing bolts and allow the rotor shaft to slide out.
6.Check the shaft, bearing, blade length, blade
7.Rotate the shaft end for end.
8.Refit the bearing bolts.
9.Refit the pulley and check that it is aligned with top pulley.
10.Refit the drive belt.
11.Check the pulley alignment to the engine shaft pulley. The drive belt should run smoothly in its track. Adjust as necessary. Tighten the pulleys.
12.Refit the belt guard.
13.Reattach the spark plug cable.
3 1/2"
A.New blade
B.Worn blade
C.After rotation
BELT COVER
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