Yamaha EH63 Service Manual page 191

1. Carburetor
2. Oil pressure switch
3. Oil warning light (option)
4. Engine switch (option)
5. Battery (12 V, option)
6. Tachometer/hour meter (option)
7. Starter motor
Color code
B Black
G Green
R Red
Y Yellow
8. Spark plug
9. TCI unit #1
10.Rectifier/regulator
11.Stator coil assembly
12.TCI unit #2
13.Starter relay
W White
Gy Gray
B/W Black/White