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Regular Maintenance
Servicing The Mower Blades
Removing the Mower Blade
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 14).
2. If there are no flats on the spindle shaft, wedge a
wooden block between the mower blade and the mower
deck housing to keep the mower blade from turning.
Inspecting the Mower Blades
1. Remove the mower blade from the unit. See
Removing the Blade.
2. Inspect the mower blade (Figures 15 & 16). Discard the
mower blade if it has any of the below conditions.
A.) Has more than .5” (12,7 mm) of the mower blade
metal removed from previous sharpening or wear (D,
Figure 15).
B.) The air lifts are excessively eroded (B & C, Figure
16) and the notch (C) is .25” (6,35 mm) deep or greater.
C.) Mower blade is bent or broken.
3. If the cutting edges are not sharp or have nicks, sharpen
the blades. See Sharpening the Mower Blades.
Figure 14. Loosening the Mower Blade for Removal
Figure 15. inspecting the Mower Blade Tips
A. Mower Blade Cutting Edge
B. Square Corner
C. Air Lift
D. Wear Measurement - DISCARD Mower Blade If
greater than .5” (12,7 mm)
B
D
A
B
C
Figure 16. inspecting the Mower Blade Air Lifts
A. New Mower Blade
B. Mower Blade at Wear Limit (A notch begins to form)
C. Mower Blade in Dangerous Condition (Notch measures .25” (6,35 mm) or greater DO NOT USE.)
C
A
C
A
CAUTION
Avoid injury! Mower blades are sharp.
Always wear gloves when handling mower blades or
working near blades.
DANGER
Avoid injury! A worn or damaged blade
can break, and a piece of the mower
blade could be thrown into the operator’s
or bystander’s area, resulting in serious
personal injury or death.
• Inspect the mower blade every 25 hours or at least once
a year.
• If the mower blade hits a solid object, stop the engine
immediately and inspect the mower blades.
• Never weld or straighten bent mower blades.
Not for
Reproduction