Specifications

R-71
CHAPTER 4
ENGINE OVERHAUL
ENGINE REMOVAL
SIDE COVERS, SEAT AND FUEL TANK REMOVAL ................4-1
ENGINE OIL DRAIN ...................................................................4-1
BATTERY ....................................................................................4-1
CARBURETOR ........................................................................... 4-1
CLUTCH CABLE ........................................................................4-1
DRIVE CHAIN .............................................................................4-2
EXHAUST MUFFLER .................................................................4-2
FOOTREST ASSEMBLY ............................................................4-2
SHIFT PEDAL .............................................................................4-3
BATTERY BOX REMOVAL ........................................................4-3
LEADS ........................................................................................4-3
ENGINE REMOVAL ....................................................................4-3
MOUNTING ON ENGINE STAND .............................................. 4-3
ENGINE DISASSEMBLY
CYLINDER HEAD, CYLINDER AND PISTON ...........................4-4
CLUTCH .....................................................................................4-7
OIL PUMP ...................................................................................4-8
KICK STARTER ..........................................................................4-9
SHIFT SHAFT .............................................................................4-9
C.D.I. MAGNETO .......................................................................4-10
GUIDE STOPPER AND TIMIMG CHAIN ...................................4-10
CRANKCASE ............................................................................. 4-11
TRANSMISSION AND SHIFTER ...............................................4-12
CRANKSHAFT ........................................................................... 4-12
CYLINDER HEAD ROCKER ARMS, CAMSHAFT & VALVES ..4-13
INSPECTION AND REPAIRS
CYLINDER HEAD .......................................................................4-15
VALVE SEATS ............................................................................4-16
VALVE SPRINGS AND VALVES ................................................4-18
CAMSHAFT ................................................................................4-19
ROCKER ARMS AND ROCKER ARM SHAFTS .......................4-20
TIMING CHAIN, SPROCKETS AND CHAIN GUIDES...............4-21
TIMING CHAIN TENSIONER ..................................................... 4-21
CYLINDER AND PISTONS ........................................................4-22
PISTON RINGS .......................................................................... 4-23
PISTON PIN................................................................................4-24
CRANKSHAFT ........................................................................... 4-25
PRIMARY DRIVE GEAR ............................................................4-26
CLUTCH .....................................................................................4-26
PUSH ROD .................................................................................4-27
SHIFT FORK SHIFT CAM .......................................................... 4-28
KICK STARTER .......................................................................... 4-29
OIL PUMP ...................................................................................4-30
OIL DELIVERY PASSAGE(CC COVER RH) .............................4-31
CRANKCASE ............................................................................. 4-31