After sharpening, the width of the knives will have
been reduced, therefore the gap between the knives
and anvil may require adjustment. There should be
3 mm of clearance between the knife and the anvil.
If there is not enough clearance, the knife edge may
touch the anvil through deflection when cutting
heavy branches and damage the sharp edge. Too
much clearance will allow small twigs and fibrous
materials to be dragged through without being cut.
To adjust the gap between the knives and the anvil,
first loosen the locking nuts from the adjustment
bolts on the anvil mounting plate using a 16 mm
spanner. Now tighten or loosen the two adjustment
bolts. Tightening these bolts will cause the anvil
mounting plate to slide further along the slotted
holes. Ensure you tighten the two bolts evenly to
avoid setting the anvil on an angle.
Once the correct anvil position has been set, ensure
the locking nuts on the adjustment bolts are
tightened. Additionally, ensure the clamping nuts
are torqued to 44 Nm.
Remove the rotor pin and turn the rotor slowly by
hand to check that it turns freely.
WARNING! Every time the knife clamping bolts are torqued up to 190 Nm and loosened off again, the life of the bolts is
reduced. The knife clamping bolts must be replaced at most after every six sharpens. Contact Hansa for replacement
bolts (m16x50 countersunk bolts of grade 12.9 or higher). Use only genuine Hansa bolts.
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