Yamaha YFM660FS, Supplementary Service Manual

Page: 275 / 478

4 - 62
ENG
CLUTCH
REMOVING THE CLUTCH
1.Remove:
●
Clutch housing assembly
●
Gasket
●
Dowel pins
NOTE:
Working in crisscross pattern, loosen each bolt
1/4 of a turn. Remove them after all of them
are loosened.
2.Straighten:
●
Punched portion of the nut
1
.
3.Remove:
●
Nut
1
NOTE:
Use a clutch holding tool
2
to hold the clutch
carrier assembly.
CHECKING THE CLUTCH
1.Check:
●
Clutch housing
1
Heat damage/wear/damage
→
Replace.
●
One-way clutch bearing
2
Chafing/wear/damage
→
Replace.
NOTE:
●
Replace the one-way clutch assembly and
clutch housing as a set.
●
The one-way clutch bearing must be
installed with the flange side facing in.
*****************************************************
Checking steps:
●
Install the one-way clutch bearing and clutch
carrier assembly to the clutch housing and
hold the clutch carrier assembly.
●
When turning the clutch housing clockwise
È
, the clutch housing should turn freely.
If not, the one-way clutch assembly is faulty.
Replace it.
●
When turning the clutch housing counter-
clockwise
É
, the clutch housing and crank-
shaft should be engaged.
If not, the one-way clutch assembly is faulty.
Replace it.
*****************************************************
Clutch holding tool:
P/N. YM-91042, 90890-04086