1. GENERAL INFORMATION MXU 550EXi/MXU500i SPECIFICATIONS :MXU500i Lubrication type Forced pressure & Wet sump Oil pump type Trochoid Model No. LDA0CA Oil filter type Full-flow filtration Name MXU 500i Lubrication System Fuel System 3.6 L Overall length 2210 mm Oil capacity Overall width 1220 mm 3.0 L Oil exchanging capacity Overall height 1265mm Wheel base 1297 mm Engine type 4 stroke D.O.H.C. Air cleaner type & No Wet type element Displacement 498.5CC 16.5 L Fuel capacity Type KYMCO PTA1 Fuel used 92# nonleaded gasoline THR.body Ignition System Front wheel 170 kg Dry weight Rear wheel 159kg VENTURE DIA 38mm Total 329kg Front wheel 178 kg Full transistor digital Electrical Equipment Curb weight Rear wheel 169kg Type ignition Total 349kg Ignition timing 12°/IDLE rpm Front wheel AT25X8-12 Spark plug CR7E (NGK) Tires Rear wheel AT25X10-12 0.60.7mm Spark plug gap Ground clearance 265 mm Min. turning radius 3450mm Battery Capacity 12V18AH Electric Wet, centrifugal Starting system Clutch type automatic Type Gasoline, 4-stroke Clutch operation system Automatic (V-belt) Drive Train Cylinder arrangement Single cylinder Primary reduction system V-belt Combustion chamber type Semi-sphere Secondary reduction Valve arrangement DOHC.,chain drive Shaft drive system 92X75 mm Bore x stroke Forward drive high radio 8.770~30.067 Compression ratio 10.5:1 Forward drive low radio 16.279~55.814 Compression pressure 15 kg/cm Reverse drive ratio 13.381~45.878 Intake valve Opens -1° BTDC FR/RR tire rolling 1995/1995 Moving Device (at 1mm lift) Closes 48° ABDC circumference Engine Exhaust valve Opens 45° BBDC Tire pressure Front 0.35 kgf/cm (at 1mm lift) Closes 5° ATDC (35 Kpa, 5.0psi) Valve clearance Intake 0.1 mm Rear 0.32 kgf/cm (cold) Exhaust 0.1 mm (32Kpa, 4.5psi) Idle speed (rpm) 1400 100rpm Left 41° Turning angle Cooling type Liquid cooled Right 41° Brake system type Front Disk brake Rear Disk brake Front Dual A-Arm Suspension type Rear Dual A-Arm 1-3