370310
F112003A
20
C)BELT REPLACEMENT AND ADJUSTMENT
Switch off the engine and disconnect the spark plug wire before carrying out
any maintenance or repair work on the machine.
If a belt is worn or breaks it should be replaced as follows:
- remove the metal guard ( fig. 6 ref. A), by unscrewing and taking out the screws
shown in figure 6 ref. B and C.
C1)B
LADE BELT
Disconnect the connecting rod (Fig. 7 Ref. B) by removing the nut and
loosening the screw that secure it to the arm (Fig. 7 Ref. C)
- Once the connecting rod has been disconnected the belt can be slipped off
(Fig. 7 Ref. A) by manually turning the relative lower pulley anticlockwise (Fig. 7
Ref. D).
- To fit the new belt follow the procedure in the reverse order.
- Afterwards check that the belt is correctly positioned by using the relative blade
control lever. When this lever is lowered and the belt is at maximum tension,
the distance between the belt and the relative belt guides (Fig. 7 Ref. E) should
be approximately 2 mm.
- Then make sure that the belt works properly by tugging lightly on the self-
winding starter cable with the engine switched off and the spark plug wire
disconnected. If everything is working properly the pulley will turn on the engine
but will not engage the belt.
If the belt engages push the engine back slightly towards the rear of the
machine (in the direction of the handlebars) until the belt is in the correct
position.
C2)
FORWARD CONTROL BELT
Remove the blade control belt following the instructions given in the preceding
paragraph.
- Remove the blade (Fig.1 Ref. G) following the instructions provided in the
section entitled “Blade removal and replacement”.
- Then remove the forward control belt from the lower pulley by turning the belt
anticlockwise (Fig. 8 Ref. A e B)
- To fit the new belt follow the procedure in the reverse order.
- Afterwards check that the belt is positioned and working correctly using the
relative forward control lever. When this lever is lowered and the belt is at
maximum tension, the distance between the belt and the relative belt guides
(Fig. 8 Ref. C) should be approximately 2 mm.
- Then make sure that the belt works properly by tugging lightly on the self-
winding starter cable with the engine switched off and the spark plug wire
disconnected. If everything is working properly the pulley will turn on the engine
but will not engage the belt.
If the belt engages push the engine back slightly towards the rear of the
machine (in the direction of the handlebars) until the belt is in the correct
position.
Summary of Contents for SC120H
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