Frequently check blades. They should be sharp, free of nicks and cracks, and securely fastened.
Remove mower from tractor and locate for easy access to bottom and top of mower. Secure to prevent mower from falling.
Inspect blades before each use to determine that they are tight and in good condition. Replace any blade that is bent, excessively nicked, worn, or has any other damage. Small nicks can be ground out when sharpen- ing.
Blade Removal (Figure 11)
Wedge a block of wood between blade and mower housing or install blade wrench over spindle pulley bolts to prevent spindle from rotating while removing bolts. Loosen Nylok blade bolt which has left hand threads.
Remove bolt (6), cup washers (5), flat washer (4) and blade (3). Shoulder washer (2) will not normally come off machine unless intentionally removed.
Blade Installation (Figure 11)
Excessive blade slipping can cause the cup washers to burn and lose their clamping force. If this happens, the cup washers must be replaced. Inspect cup washers before installation and replace if necessary.
Install shoulder washer (2), if removed, small end up.
Position blade (3) with cutting edge leading in counter- clockwise rotation as viewed from the top of the mower. Install flat washer (4), cup washers (5) and special Nylok bolt (6) which has left hand threads. Torque bolt to 170
1. | Blade wrench | 4. | Flat washer |
2. | Shoulder washer | 5. | Cup washer |
3. | Blade | 6. | Special Nylok bolt |
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| w/left hand threads |
Figure 11. Blade Installation & Removal
Blade Sharpening (Figure 12)
Always sharpen both cutting edges of each blade at the same time, the same amount, to maintain balance.
Follow the original sharpening pattern as shown. Do not sharpen blade to a razor edge, but leave a 1/32" to 1/16" blunt edge. Do not sharpen back side of blade.
Use a new Nylok blade bolt and cup washers when you replace the blade. Do not substitute any bolt for the special blade bolt. It is
Your dealer can supply genuine replacement
blades. Substitute blades may not meet original | Figure 12. Blade Sharpening |
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equipment specifications and may be dangerous. |
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18 Owner Service | 51642 (Rev. 11/9/2007) |
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