CAUTION
Avoid injury! Mower blades are sharp.
•Always wear gloves when handling the mower blades.•Always wear safety eye protection when grinding.Regular Maintenance
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1. | Sharpen the mower blades with grinder, hand file, or | Figure 29. Sharpening the Mower Blade | |
| electric blade sharpener. | ||
| A. Mower Blade Bevel | ||
2. | Sharpen the mower blade by removing an equal amount | B. Mower Blade Cutting Edge | |
| of material from each end of the mower blade. |
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3. | Keep the original bevel (A, Figure 29) when grinding. |
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| DO NOT change the mower blade bevel. |
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4. | The mower blade should have a maximum 1/64” (0,40 |
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| mm) cutting edge (B) or less. |
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5. | Balance the mower blades before installing. |
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| Balancing the Mower Blades | Reproduction |
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CAUTION |
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Avoid injury! Keep mower blades balanced. |
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• An unbalanced mower blade can create excessive |
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vibration and damage the unit or cause mower blade |
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| failure. |
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1. Clean the mower blade to remove any dried grass or |
| Figure 30. Balancing the Mower Blade |
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other debris. |
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| A. Nail |
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2. See Figure 30. Put the mower blade on a nail in a vise |
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and turn the mower blade to the horizontalNotposition. |
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3. Check the balance of the mower blade. If either end |
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of the mower blade moves downward, shar | n the |
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heavy end until the mower blade is balanc d. S |
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Sharpening the Mower Blades for prop r sharp ning |
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instructions. |
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4. Repeat the process until the mower blade remains 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 |
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towards the mower deck as shown in Figure 31. Secure |
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with the mower blade mounting bolt and flat washer (A |
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& B, Figure 31) and torque to 70 ft. lbs (94 Nm). |
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2. If there are no flats on the spindle shaft, wedge a |
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wooden block between the mower blade and the mower |
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deck housing to keep the mower blade from turning. |
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| Figure 31. Tightening the Mower Blade for |
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| Installation |
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| A. Mower Blade Mounting Bolt |
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| B. Flat Washer |
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| C. Mower Blade Air Lift (Points Up For Installation) | |
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| D. 4 X 4 Wooden Block |
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