Vari Hurricane F-600, Инструкция по эксплуатации, Страница: 18 / 41

F-600
18
6.3 Working blade replacement and sharpening.

The machine must be standing on a firm support plate and must be secured so that
the blade is easily accessible and an unexpected spontaneous machine motion
cannot occur.

Be very careful when dismounting the blade. Its cutting edges are sharp. Protect
your hands with working gloves
.

The engine must be switched off and the cable end connector to the spark plug
disconnected!
Working blade replacement procedure is as follows (always work with a helper):
a) Release and unscrew outer bolts „A“. Then release and unscrew central bolt „B“ and
remove the blade and the blade holder from the blade shaft.
b) Plane the blade and sharpen the cutting edges. Inclination of the sharpened cutting
edge should be 25° with respect to the lower plane of the blade. The blade must be
well balanced after the sharpening; the material loss at sharpening the two cutting
edges should be therefore identical.
c) Mount the blade and the blade holder back onto the blade shaft in a reverse order of
operations.

Central bolt M10x1x25 has a fine thread and therefore it must not be confused with
outer bolts whose threads are normal!
d) Tighten the bolts at a prescribed tightening moment.

Should there be excessive vibrations on the machine handlebars after the
installation, the blade must be unconditionally balanced once again!
Figure 11: Correct sharpening of the blade
Note: Manufacturer does not answer for any damages caused by the machine due to unskilled
repair or treatment of blades without the use of the original spare parts.
6.4 Replacement of V-belts and adjustment of tension pulleys.
6.4.1 Replacement of V-belts
V-belts should be replaced according to their wear (cracked sides, torn belt, sides worn
out down to belt carrier fibres, belt “pulled“ out of shape) or after about 200 hours of
operation at maximum. In this machine, belt pulled out to maximum is considered a belt in
which distance between inner belt surfaces (at the pressed lever of the cutting blade drive
clutch) is less than 7 mm (see Fig. 12).
WRONG !!
Upper cutting edge at
maximum grinding off
(max. 35 mm)
CORRECT