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7.2.4 Blade sharpeing and replacing
The blade of this mulching machine is turning very
fast so that a small damage in one single blade
can create an imbalance which turn in a strong
noise and vibration. Anytime there is a un-normal
noise it is reccomend to verify the condition of the
blades. (see par. 7.1.2).
To check and remove the blade, Park the machine
in a flat ground; stop the engine and remove
the starting key. Lift by a crane the front of the
machine in upright position. Secure the machine
by a prop. in order to accede and remove easely
the blades. Avoid a precarious and unsafe
position. If the machine falls, it could crush you
and cause you serious injuries.
Unscrew the center bolt to remove the blade support. If possible use a pneumatic tool or
percussion screwdriver. Once you have removed the whole blade set, avoid to disassemble
the blade from the blade support.
IMPORTANT:
Whenever you hear unusual noises, it is mandatory to check the Condition of the blades. (See 7.1.2).
Loosen the center screw (E) to remove the blade holder.
- Make sure that the blade can be turned easily in the
blade support.
- Sharpen the blade in the same way. Pay attention to
maintaining the same weight for the two blades. Max
sharpening : 5mm - 30 °
- Re-assemble the blade holder (Tightening torque
160Nm).
Carefully lay the machine down on the floor.
NOTE:
To facilitate loosening and tightening of the nut blade fixing
(Fig. 23) at the right torque value (160 Nm), remove the cover
(H) Fig. 29.
Lock the rotor (I) (Fig. 29) with 2 screws to prevent rotation of
the blade shaft.
7 - MAINTENANCE
SECTION 7 - MAINTENANCE
5
SICUREZZA
E
60
I
H
Fig. 29
39
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