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Lubricate with lithium-based grease.
Remove the screw (1) and put in the grease, turning the
shaft manually until grease emerges, then replace the
screw (1).
Sharpening the 3 point blade
WARNING! Use protective gloves. If sharpening
is done without removing the blade, disconnect the
spark plug cap.
Sharpening must be done taking account of the type of
blade and cutting edges, using a flat file and working all
the points equally.
The references for correct sharpening are given in Fig. 19:
A = Incorrect sharpening
B = Sharpening limits
C = Incorrect and unequal angles
It is important to retain the correct balance after sharp-
ening.
3 point blades can be used from both sides. When one
side of the points is worn, the blade can be turned and
the other side used.
WARNING! The blade must never be repaired,
but must be replaced as soon as signs of breaking
are noted or the sharpening limit is exceeded.
Head line replacement
- Follow the sequence indicated in the figure.
Sharpening the line cutting knife
- Remove the line cutting knife (1) from the guard (2) by
unscrewing the screws (3).
- Fix the line cutting knife in a vice and sharpen it using
a flat file, being careful to retain the original cutting
angle.
- Refit the knife on the guard.
GB-35
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