Clean all mounting surfaces and remount the knife in the reverse procedure. Tighten all three nuts as tight as
possible by hand using a 13 mm spanner and 6 mm hexagonal Allen key. Do NOT tighten the bolts with the
hexagonal Allen key.
Note: When blades are sharpened, material is removed from the blades, affecting the distribution of weight in
the rotor. The rotor must be balanced appropriately after blade sharpening, as per the method outlined below: