Regular Maintenance
Servicing the Mower Blades
Removing the Mower Blades
CAUTION
Avoid injury! Mower blades are sharp.
• Always wear gloves when handling mower blades or working near blades.
1. To remove the mower blade, use a 1” wrench on the flats of the spindle shaft and remove the mower blade mounting bolt with a 15/16” wrench (Figure 21).
2. If there are no flats on the spindle shaft, wedge a | Figure 21. | Loosening the Mower Blade for Removal | |
wooden block between the mower blade and the |
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mower deck housing to keep the mower blade | |||
from turning. |
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Inspecting the Mower Blades |
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DANGER
| Reproduction |
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Avoid injury! A worn or damaged blade can |
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break, and a piece of the mower blade could be |
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thrown into the operator’s or bystander’s area, |
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resulting in serious personal injury or death. |
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• Inspect the mower blade every 25 hours or at |
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least once a year. |
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• If the mower blade hits a solid object, s | p |
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the engine immediately and inspect the m | wer |
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blade. |
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• Never weld or straighten bent mower blades. |
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1. Remove the mower blade from the unit. See |
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| Figure 22. | Inspecting the Mower Blade Tips |
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Removing the Blade. |
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| A. Mower Blade Cutting Edge |
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2. Inspect the mower blade (Figures 22 & 23). |
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| B. Square Corner |
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| C. | Air Lift |
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Discard the mower blade if it has any of the |
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| D. Wear Measurement - DISCARD Mower Blade If | ||||||||||||||||||
below conditions: |
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| greater than .5” (12,7 mm) |
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A.) Has more than .5” (12,7 mm) of the mower |
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blade metal removed from previous sharpening or |
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wear (D, Figure 23). |
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B.) The air lifts are excessively eroded (B & C, |
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Figure 23) and the notch (C) is .25” (6,35 mm) |
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deep or greater. |
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C.) Mower blade is bent or broken. |
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3. If the cutting edges are not sharp or have nicks, |
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| Figure 23. Inspecting the Mower Blade Air Lifts |
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sharpen the blades. See Sharpening the Mower |
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| A. New Mower Blade |
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Blades. |
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| B. Mower Blade at Wear Limit (A notch begins to | ||||||||||||||||
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| form) |
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| C. Mower Blade in Dangerous Condition (If notch | |||||||||||||||
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| measures .25” (6,35 mm) or greater DO NOT USE | |||||||||||||||
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| Replace with new mower blade.) |
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