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 |
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| electric blade sharpener. |
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| A. Mower Blade Bevel |
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2. | Sharpen the mower blade by removing an equal amount | B. Mower Blade Cutting Edge |
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| 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 |
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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. | Reproduction |
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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. |
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| 36” Models: Make sure the blade is firmly seated |
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| in the blade saddle. Secure with the mower blade |
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| mounting bolt and flat washer (A & B, Figure 31) and |
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| torque to 70 ft. lbs (94 Nm). |
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| 48” Models: Secure with the mower blade mounting |
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| bolt and flat washer (A & B, Figure 31) and torque to 70 | Figure 31. Tightening the Mower Blade for |
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| ft. lbs (94 Nm). |
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2. | If there are no flats on the spindle shaft, wedge a |
| Installation |
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| A. Mower Blade Mounting Bolt |
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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. | B. Flat Washer | |
C. Mower Blade Air Lift (Points Up For Installation) | ||
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| D. 4 X 4 Wooden Block |
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