Regular Maintenance
Sharpening the Mower Blade
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CAUTION
Avoid injury! Mower blades are sharp.
•Always wear gloves when handling mower blades or working near blades.
• Always wear safety eye protection when grinding. | B |
1. Sharpen the mower blades with grinder, hand file, or | Figure 17. Sharpening the Mower Blade | |
A. Mower Blade Bevel | ||
electric blade sharpener. | ||
B. Mower Blade Cutting Edge | ||
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2.Sharpen the mower blade by removing an equal amount of material from each end of the mower blade.
3.Keep the original bevel (A, Figure 17) when grinding. DO NOT change the mower blade bevel.
4. The mower blade should have a maximum 1/64” (0,40 mm) cutting edge (B) or less.
5. Balance the mower blades before installing.
Balancing the Mower Blades
CAUTION |
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Avoid injury! Keep mower blades |
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balanced. |
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An unbalanced mower blade can create excessive vibrati n | Fig | re 18. Balancing the Mower Blade |
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and damage the unit or cause mower blade failure. |
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| A. Nail |
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1. Clean the mower blade to remove any dried grass or |
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other debris. | Not |
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2. See Figure 18. Put the mower blade on a nail in a vise |
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and turn the mower blade to the horizontal | osition. |
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3. Check the balance of the mower blade. If | ith r nd of |
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the mower blade moves downward, sharpen the heavy |
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end until the mower blade is balanced. See Sharpening |
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the Mower Blades for proper sharpening instructions. |
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4. Repeat the process until the mower bladeReproductionremains in the |
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horizontal position. |
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Reinstalling the Mower Blades |
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1.Reinstall each mower blade with the air lifts pointing up towards the mower deck as shown in Figure 19. Secure with the mower blade mounting bolt and flat washer (A & B, Figure 19) and torque to 70 ft. lbs (94 Nm).
2.If there are no flats on the spindle shaft, wedge a
wooden block between the mower blade and the mower | Figure 19. Tightening the Mower Blade for Installation | |
deck housing to keep the mower blade from turning. | ||
A. Mower Blade Mounting Bolt | ||
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| B. Flat Washer | |
| C. Mower Blade Air Lift (Points Up For Installation) | |
| D. 4 X 4 Wooden Block |
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