CHAPTER 4
ENGINE
SEAT, FUEL TANK AND SIDE 
COVERS.....................................  4-1
EXHAUST PIPE AND 
SILENCER..................................  4-7
RADIATOR...............................  4-13
CARBURETOR........................  4-21
CAMSHAFTS...........................  4-51
CYLINDER HEAD....................  4-73
VALVES AND VALVE 
SPRINGS..................................  4-81
CYLINDER AND PISTON......  4-101
CLUTCH.................................  4-117
OIL FILTER ELEMENT, 
WATER PUMP AND RIGHT 
CRANKCASE COVER...........  4-135
BALANCER............................  4-151
OIL PUMP..............................  4-159
KICK SHAFT AND 
SHIFT SHAFT........................  4-169
AC MAGNETO AND 
STARTER CLUTCH...............  4-185
ENGINE REMOVAL...............  4-207
CRANKCASE AND 
CRANKSHAFT.......................  4-221
TRANSMISSION, SHIFT CAM 
AND SHIFT FORK.................  4-245
CHAPTER 5
CHASSIS
FRONT WHEEL AND REAR 
WHEEL.......................................  5-1
FRONT BRAKE AND 
REAR BRAKE..........................  5-23
FRONT FORK..........................  5-61
HANDLEBAR...........................  5-91
STEERING.............................  5-103
SWINGARM...........................  5-119
REAR SHOCK ABSORBER...  5-139
CHAPITRE 4
MOTEUR
SELLE, RESERVOIR DE 
CARBURANT ET CACHES 
LATERAUX..................................... 4-2
TUBE D’ECHAPPEMENT ET 
SILENCIEUX................................... 4-8
RADIATEUR................................. 4-14
CARBURATEUR.......................... 4-22
ARBRES A CAMES...................... 4-52
CULASSE....................................... 4-74
SOUPAPES ET RESSORTS DE 
SOUPAPES..................................... 4-82
CYLINDRE ET PISTON............ 4-102
EMBRAYAGE............................. 4-118
ELEMENT DE FILTRE A 
HUILE, POMPE A EAU ET 
DEMI-CARTER DROIT............ 4-136
BALANCIER............................... 4-152
POMPE A HUILE....................... 4-160
ARBRE DE KICK ET 
AXE DE SELECTEUR............... 4-170
ALTERNATEUR AVEC ROTOR A 
ALIMENTATION PERMANENTE 
ET EMBRAYAGE DU 
DEMARREUR............................. 4-186
DEPOSE DU MOTEUR.............. 4-208
CARTER MOTEUR ET 
VILEBREQUIN........................... 4-222
BOITE DE VITESSES, TAMBOUR 
ET FOURCHETTES DE 
SELECTION................................ 4-246
CHAPITRE 5
CHASSIS
ROUE AVANT ET ROUE 
ARRIERE......................................... 5-2
FREIN AVANT ET FREIN 
ARRIERE....................................... 5-24
FOURCHE..................................... 5-62
GUIDON......................................... 5-92
DIRECTION................................ 5-104
BRAS OSCILLANT.................... 5-120
AMORTISSEUR ARRIERE...... 5-140 
3 - 2
INSP
ADJ
MAINTENANCE INTERVALS
ROTOR NUT
Retighten
EXHAUST PIPE, SILENCER, 
PROTECTOR
Inspect and retighten
Clean
Replace* Whichever comes first
*SPARK ARRESTER
Clean
(Every 
six 
months)
CRANK
Inspect and clean
CARBURETOR
Inspect, adjust and clean
SPARK PLUG
Inspect and clean
Replace
DRIVE CHAINUse chain lube
Chain slack: 
48 ~ 58 mm (1.9 ~ 2.3 in) Lubricate, slack, alignment
Replace
COOLING SYSTEM
Check coolant level and leakage
Check radiator cap operation
Replace coolantEvery two years
Inspect hoses
OUTSIDE NUTS AND BOLTS Refer to “STARTING AND 
BREAK-IN” section in the 
CHAPTER 1. Retighten
AIR FILTER
Clean and lubricate Use foam air-filter oil or 
equivalent oil
Replace
OIL FILTER
Replace
OIL STRAINER (frame)
Clean
FRAME
Clean and inspect
FUEL TANK, COCK
Clean and inspect
BRAKES
Adjust lever position and pedal height
Lubricate pivot point
Check brake disc surface
Check fluid level and leakage
Retighten brake disc bolts, caliper bolts, 
master cylinder bolts and union bolts
Replace pads
Replace brake fluid Every one yearItemAfter 
break-inEvery 
race
Every third 
(or 
500 km)Every fifth 
(or 
1,000 km)As 
requiredRemarks
1 
2 
3 
4 
5 
6 
7