3
92
E
N
G
IN
E ASS
E
M
B
LY AN
D CO
NTRO
LS
Check the state of use of the silent-blocks as fol-
lows. Clamp the gear
B
intended to mesh with
kickstart idler gear, using protective elements. Ro-
tate the clutch basket. If there is play between the
basket and the gear unit, replace the clutch basket.
Check the state of use of the centre bearing
1
which
must have no traces of meshing or abnormal wear.
Check the state of use of the roller bearing
2
. If it is
worn, have it replaced.
3.12.2 CHECKING CLUTCH DISCS
The clutch discs are divided into friction discs and
steel discs: there are eight friction discs and seven
steel discs.
The friction discs have friction material applied on
both sides which wear out due to the steel discs
sliding on them.
Make sure that the thickness of each friction disc is
not below the minimum value fixed at:
minimum thickness: 2,8mm
The other value that needs to be checked is the
thickness of the teeth of each friction disc. They
must not be less than the minimum value fixed at:
minimum friction disc tooth thickness: 13,3mm
2
1
Internal centre bearing and roller bearing of clutch
gear.
Minimum thickness.
Minimum disc tooth thickness.
