-18-
Operation with a worn knife not only prevents efficient operation but also leads to
loss of balance. Reverse or replace the hammer knife according to the illustration
shown below.
Replace the hammer knife immediately with a new one when it is broken or
abraded unevenly.
When checking the knife shaft assy, it is easy to work with raising the protection
cover.
For raising the protection cover, lift up the protection cover and hook up the hooks
on both sides of the protection cover with the rings on both sides of the knife frame.
After confirming the cover will not lower, get your hands off of the cover.
For lowering the protection cover, release the hooks from the rings on both sides
and lower the cover slowly.
10-4. Standard time for knife replacement
New knife
Time to reverse
Time to replace
10-5. Hammer knife inspection items
No.
Part
Inspection item
Correction
Knife blade
Missing baldes
Attach
Abrasion
Reverse or replacement
Breakage, curvature or uneven
abrasion
Replacement
Mounting pin
Looseness
Tightening(*1)
Wrong direction
Attach correctly
Mounting hitch Curved or open
Correction or repair by specialist(*2)
Breakage or uneven abrasion Repair by specialist(*2) or replacement
Balance weight Missing
Repair by specialist(*2)
Abrasion
Support shaft
Uneven abrasion
Repair by specialist(*2) or replacement
Bearing
No lubrication
Lubricate
Unsmooth rotation
Replacement
knife shaft assy Twining of vines or cords etc.
Remove
Distortion as a whole
Replacement
*1 The tightening torque of the knife mounting pin is 32 - 36 N.m
Excessive tightening will damage the thread of the mounting pin.
*2 Special correction by balancing machine may be required.
1
2
3
4
5
6
7
10-6. As for the protection cover
How to raise and lower the protection cover.
Protection cover
Link
Hook
Implement operation of the protection cover after the knife shaft assy stops
completely.
When lowering the protection cover, pay attention not to pinch hands and feet.
When raising or lowering the protection cover, pay attention not to touch the
knives.
Protection cover should be kept lowering except for checking the mowing unit or
replacing the knives.
CAUTION
