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English
13.3 Tightening the drive belt
The machine is equipped with a long drive belt. After operating for a few hours, this belt
stretches so that it loses its tension. Inadequate tension and heavy loading will cause the belt to
slip, thus increasing wear and reducing the operating life. Regular checking of the belt tension is
thus recommended (every 100 hours).
Caution :
When fi tting a new belt, it is recommended to tension it after it has operated for
10 hours.
• As for every maintenance activity, do not forget to switch OFF the engine and remove the key
from lock.
• Remove both safety covers at the side (see 11.3.2.1).
• You tension the belt by tipping the mounting plate of the engine. For this, loosen the 4 (M12)
securing bolts (1) of the engine support (19 mm spanner).
The bolts do not have to be completely unscrewed; 2 turns is suffi cient to release the tension.
• Disassembled the two belt guides (at the top
and the bottom) (2 and 3) and pull them away
from the belt (M8 – 13 mm spanner).
• Adjust the belt tension by tipping the mount-
ing plate of the engine forwards.
• The correct belt tension is obtained when
you obtain a defl ection of 10 mm on the belt
when placing a load of 4.5 kg at a point halfway
between the centres of the pulleys.
• When the correct tension is obtained, tighten
the 4 bolts (torque to 86 Nm).
• Refi t the belt guides and adjust them so that a
gap of 3 to 5 mm exists between the guide and
the belt.
• Carefully refi t all safety covers.
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