1. GENERAL INFORMATION MXU 550EXi/MXU500i SPECIFICATIONS :MXU550EXi Lubrication type Forced pressure & Wet sump Oil pump type Trochoid Model No. LEA0AD/LEA0AE Oil filter type Full-flow filtration Name MXU 550 EXi 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 501 CC 16.5 L Fuel capacity Type KYMCO PTA1 Fuel used 92# nonleaded gasoline THR.body Ignition System Front wheel 175/187 kg Dry weight Rear wheel 170/173kg VENTURE DIA 38mm Total 345kg /360kg Front wheel 184/196 kg Full transistor digital Electrical Equipment Curb weight Rear wheel 179/182kg Type ignition Total 363kg /378kg Ignition timing 12°/IDLE rpm Front wheel AT26X8-14 Spark plug CR7E (NGK) Tires Rear wheel AT26X10-14 0.60.7mm Spark plug gap Ground clearance 275 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 92X75.4 mm Bore x stroke Forward drive high radio 8.770~30.067 Compression ratio 10.7:1 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 2092/2079 Moving Device (at 1mm lift) Closes 48° ABDC circumference mm(LEA0AD) Engine Exhaust valve Opens 45° BBDC 2073/2073 mm(LEA0AE) (at 1mm lift) Closes 5° ATDC Tire pressure Front 0.38 kgf/cm Valve clearance Intake 0.1 mm (38 Kpa, 5.4psi) (cold) Exhaust 0.1 mm Rear 0.35 kgf/cm Idle speed (rpm) 1400 100rpm (35Kpa, 4.97psi) Cooling type Liquid cooled Left 41° Turning angle Right 41° Brake system type Front Disk brake Rear Disk brake Front Dual A-Arm Suspension type Rear Dual A-Arm 1-2