Moteur FB3 FB6 GB WORKSHOP MANUAL 100 cm3 INTRODUCTION This workshop manual concerns the FB engine which is fitted on several 100cm³ vehicles FB 3 ..SV100 FB 6 ..SPEEDFIGHT TREKKER ELYSÉO VIVACITY 2 stroke oil 2T SPECIAL .. 1 .litre . Ref. 753752 2T SYNTETIC 1 .litre . Ref. 753759 Relay box oil GEAR OIL GX 80W 90 2 .litres .. Ref.753009 High temperature grease SKF LGHT 3/0.4 Ref. 752093 A GOOD MECHANIC WORKS IN AN ORDERLY AND METHODICAL FASHION TIME SAVING MONEY SAVING 1 100cm3 CONTENTS INTRODUCTION DISMANTLING AND REASSEMBLY page .. 1 PROCEDURE Of the engine from the vehicle .. 10 Placing the engine on its support 10 Of the cooling system 10 Of the flywheel 11 Of the cylinder head And the cylinder piston assembly 12 Of the cylinder and the piston 12 Of the intake valve and pipe .. 13 CHARACTERISTICS Of the primary transmission assy 13 Of the kick starter system 15 Vivacity 3Of the relay . 16 Of the oil pump . 17 Elyséo .. 4 Speedfight . 5 Setting the oil pump 17 Checking the lubrication circuit . 17 TKR .. 5 Of the starter .. 18 SV100 .. 6 Of the carburettor choke assy 18 Opening of engine housings .. 19 Of the crankshaft assy .. 20 Checking the crankshaft assy 20 Replacing the bearings and seals .. 21 MAINTENANCE PLAN Engine reassembly and closing of housings . 21 page .. 7 SETTING UP page .. 8 TIGHTENING TORQUE AND SPECIAL TOOLS page .. 9 2 100cm3 CHARACTERISTICS VIVACITY Main characteristics Chassis ENGINE MARKING IDENTIFICATION MARKING Number XXXXXXXX Type FB6 VIN number 17 characters Manufacturer’s plate oiloil 0,12L0,12L FB6 ENGINE Identification VGAS2AC . . 2 stroke cooled by forced air Bore x stroke 50.6 X 49.7 Front tyre . 120/70 12 Displacement .. 100 cm³ Rear tyre 130/70 12 Gross compression ratio 11 Pressure when cold front . 1.3 bar Maximum power rear .. 1.6 bar 6.4 kw at 7000 rpm 95/1/CEE Timing Capacities