Hansa C13 O&M Manual - OM-007 Revision L 28/06/2021
© Hansa Chippers 2020
14
Knife re-sharpening and knife replacement
How do I know that the knives need re-sharpening?
Chipper loses its self-feeding action with blunt knives
Material has to be pushed in
Material comes out in long strips
Blunt knives will cause excessive vibration
Blunt knives result in damage to the chipper
How to re-sharpen the knives:
If you don’t have a surface grinder or are unsure how to re
-sharpen the knives, contact a professional saw doctor or Hansa to
arrange re-sharpening.
Tools and materials required for re-sharpening (approx. 40 mins):
•
13 mm spanner
•
6 mm hexagonal Allen key
•
A stick magnet (optional)
•
Surface grinder
•
Coolant
Remove the knives for sharpening
Open the rotor housing cover by removing the two housing cover locking bolts with an 18 mm spanner, then lift
the rotor housing cover to access the cutting rotor.
Rotate the cutting rotor to gain access to the knives, then engage the belt drive to stop the cutting rotor from
rotating.
Use a 13 mm spanner to remove the knives from the cutting rotor. There are five
bolts that you must remove to do so.
Be careful not to drop the bolts or knives into the chipper
A stick magnet can be used to retrieve them if this does occur
Measure the width of the knife and check that it will be at least 46 mm after
sharpening.
If the knives will be shorter than 46 mm, then the knives should be replaced.
Please contact your nearest Hansa dealer.
WARNING!
Do NOT
operate your chipper with blunt knives.
WARNING!
Be careful when working around the sharp knives. Be aware that even though engine is switched off, the
cutting means can still move.
1
2
3
MIN 46 mm
