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5.4.3 How to replace the Blade
Hard lock nut
Nut guard
Knife color
Knife stay
Blade
Reference:
1) The tightening torque for the hard lock nut is "800 kgf·cm" (78.4 N·m). As a guide, use a
30 cm long box wrench (size 22) and tighten it with a force of about 32 kgf or more.
2) A torque wrench is required to check the tightening torque. We recommend that you check
the tightening force of the above torque at a dealer in advance.
3) If you use it in a place containing dry soil or sand, check the Blade frequently because the
Blade will wear quickly.
4) We recommend that you have a spare Blades and a set of necessary parts for installation
beforehand.
5) Be careful not to lose the knife collar when changing Blades.
6) If the gauge (recess) on the back of the Blade setting bolt is worn, replace it.
If you need to replace the Blade (both front and back), refer to
the following to attach and detach the Blade.
① Be sure to use a Blade change and loosen the hard lock nut
to remove the Blade. (First, attach the 22 box or box wrench
to the upper lock nut only to remove it, and then remove
the lower nut as well.)
② When replacing the front and back blade, replace the Blade
set bolt, and when replacing the Blade, replace other parts
including the Blade set bolt at the same time.
③ After replacing with a new blade (replacement of the front
and back), securely tighten the hard lock nuts one by one
in the order of lower side and upper side.
wear
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5. 点検・整備・調整
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