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6.12 SHARPENING AND REPLACEMENT OF THE BLADE
Dismounting:
- Disconnect the battery
- Lift the mower and tilt it to the side of the fuel tank!
- Use gloves when changing the blades
- Remove the blade bolt, blade washer and finally the blade
- Be careful when removing the bolt, the blade may fall to the ground
Check the blade geometry:
- The blade mustn´t be twisted, bent or deformed
- Twisted blade mustn´t be straightened, USE A NEW ONE
- Cutting sections of the blade must be in one level (Fig. 78)
- The blade must not have any cracks
Fig. 78
Sharpening:
- Along the blade (Fig. 79)
- Blade angle about 40°
- Do not exeed 12 mm total metal removed at end of the blade
- Sharpen evenly on both sides of the blade. Make sure that each cutting edge receives an equal amount of
grinding to prevent having an unbalanced bar, which will cause excessive vibration at high speeds and may
damage the mower
- Ensure blades are balanced after sharpening
- If the blade is out of balance, remove metal on the heavy and by grinding, until blade is balanced
Allowable Blade Wear
Fig. 79
Mounting:
- Install the blades using LOCTITE 243
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