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 (TT-R90) ....................... 4-39
CDI MAGNETO AND STARTER
CLUTCH (TT-R90E) ................................ 4-41
CRANKCASE AND CRANKSHAFT ....... 4-45
SHIFT FORK, SHIFT CAM
AND TRANSMISSION ............................ 4-48
CHAPTER 5
CHASSIS
FRONT WHEEL AND REAR WHEEL ...... 5-1
FRONT FORK ........................................... 5-6
HANDLEBAR ............................................ 5-9
STEERING .............................................. 5-11
SWINGARM ............................................ 5-12
CHAPTER 6
ELECTRICAL
ELECTRICAL COMPONENTS
AND WIRING DIAGRAM .......................... 6-1
IGNITION SYSTEM ................................... 6-3
ELECTRIC STARTING SYSTEM
(TT-R90E) .................................................. 6-7
CHARGING SYSTEM (TT-R90E) ........... 6-15
CARBURETOR HEATING SYSTEM ...... 6-17
MAINTENANCE RECORD ..................... 6-21