This stator coil cost too much and back order "in Japan". We decided to replace all this old Electrical wires to latest model wire system. That wasn't cost difference much and faster we thought.
Then we found it has three kinds stator coil exit. And that mean three kind of crankcase cover and fly wheels.
Early model coil.
2nd & 3rd generation coil and cover. You can see these two has different mount wholes.
Three generation of Fly wheels.
Left is oldest, right is latest.
This is final shape before piece put back to body.
TW was came out 1987. This one is '89. Yamaha changed only these Electrical system. Now, we can tell this motor is same as latest model!
All TW wire diagrams. Another fun time.
All wire harness switched newer. C.D.I unit also new.
We doesn't change control switches so, many wire and coupler connection needs change like pictures. We will change control switch too if we have next chance. That saves lot's of time.
Put back with new screw bolts.
What we changed: wire harness(used. came with relays & regulator), CDI, crankcase cover(used) and stator coil for after 2001~ model.