CHAPTER 4
ENGINE 
CARBURETOR   
......................................... 4-1  
CYLINDER HEAD   
..................................... 4-8  
CAMSHAFT AND ROCKER ARMS   
....... 4-13  
VALVES AND VALVE SPRINGS   
........... 4-16  
CYLINDER AND PISTON   
....................... 4-21  
CLUTCH   
.................................................. 4-27  
KICK AXLE   
............................................. 4-33  
SHIFT SHAFT   
......................................... 4-34  
OIL PUMP   
............................................... 4-36  
CDI MAGNETO   
....................................... 4-39  
CRANKCASE AND CRANKSHAFT   
....... 4-41  
SHIFT FORK, SHIFT CAM AND
TRANSMISSION   
..................................... 4-44 
CHAPTER 5
CHASSIS 
FRONT WHEEL AND REAR WHEEL   
...... 5-1  
FRONT FORK   
........................................... 5-6  
HANDLEBAR   
............................................ 5-9  
STEERING   
.............................................. 5-10  
SWINGARM   
............................................ 5-11 
CHAPTER 6
ELECTRICAL 
ELECTRICAL COMPONENTS AND 
WIRING DIAGRAM   
................................... 6-1  
IGNITION SYSTEM   
................................... 6-2  
CARBURETOR HEATING SYSTEM   
........ 6-6  
MAINTENANCE RECORD   
....................... 6-9 
 
6 - 1
–+ELEC
 
ELECTRICAL COMPONENTS AND WIRING DIAGRAM 
EC600000 
ELECTRICAL 
EC610000 
ELECTRICAL COMPONENTS AND WIRING DIAGRAM 
EC611000 
ELECTRICAL COMPONENTS 
1  
CDI magneto  
2  
CDI unit  
3  
Ignition coil  
4  
Spark plug  
5  
“ENGINE STOP” switch  
6  
Thermo switch  
7  
Carburetor heater  
8  
Rectifier/regulator  
COLOR CODE  
B...................... Black
Br .................... Brown
G ..................... Green
O ..................... Orange
R ..................... Red
W..................... White 
EC612000 
WIRING DIAGRAM
G/WB/RW/LW/RBr G
RW
WB
Y/R
O
BO
B
B
BY/RY
WY/RB
W
Y
B
GG/W
B/W
B/W
BrB/RWWWY
OO
BBW/LY/RR
W
B
B
B
W/R
Y/R
OFF
RUN
B
Y/R
B
B
Y
Y
1
23
4
5 6
7 8
 
B/R ................... Black/Red
B/W .................. Black/White
G/W.................. Green/White
W/L .................. White/Blue
W/R .................. White/Red 
6