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3. Adjustment of V-belt tension
Adjust the V-belt tension with the adjusting nut so
that the spring length is 90 mm.
4. Blade
① Replace the blades if clearance between them
exceeds the specified value. If the clearance is
excessive, mowing operation may not be taken
place.
Clearance between blades (mm)
Standard assembling value (when new) Service limit
1.61 10.0
② Replace the blade with new one if its bend exceeds
the specified value.
Bend of blade (at end)
0 – 3 mm
③ Sharpening of blade
Sharpen the blade edge to 45º and the blade end
dimension to 0.4 mm as shown in the right figure.
NOTE:
1. When sharpening the blade, put on protection
glasses and gloves.
2. After completion of sharpening, be sure to adjust
the balance of the blade before installing it.
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