Yamaha GT1 Service Manual page 34

ENBINE -
clutch
. Fig. 4-9-8
E. Clutch Housing Assembly (integrated with
the primary driven gear)
There is a rubber friction ring placed on the outside
of the clutch between the primary driven gear and
the clutch housing in order to reduce gear noise at
low engine speeds.
1 I Inspection
Insert the primary gear retaining collar (spacer)
in the primary driven gear boss and check it for
radial play. lf the play is excessive, replace the
gear retaining collar because it will cause
excessive noise. If any scratches are found,
replace the spacer to avoid impaired clutch
action.
Fig. 4-9-9
-28-
F. Checking the Primary Gear Retaining
Co.liar
(Spacer)
Place the primary gear retaining collar around the
main axle and again check it for radial play. If play
exists, replace the gear retaining collar.
Replace any collar with step-wear on its outer
surface .
Fig. 4-9-10
G. Fitting Cushion Rings
A cushion ring is installed between the clutch boss
and each of the friction plates to insure even
engagement and complete disengagement of the
plates. When fitting cushion rings, be sure they are
flat and not twisted.
Fig. 4-9-11