1. GENERAL INFORMATION DOWNTOWN 125i SPECIFICATIONS Air cleaner type & No Paper element, wet Fuel System Fuel capacity 12.5 L Name DOWNTOWN125i Model No. SK25AA Overall length 2200mm Throttle type Butterfly type Overall width 800 mm Overall height 1410 mm Ignition System Type ECU Electrical Equip. Wheel base 1542 mm Engine type O.H.C. Spark plug NGK CR7E Displacement 124.8cc Fuel Used 92# nonleaded gasoline Front wheel 68 Spark plug gap 0.60.7mm Net weight (kg) Rear wheel 96 Battery Capacity 12V10AH Clutch Type Dry multi-disc clutch Power Drive System Total 164 sion Gear Transmis- Front wheel 70 Type Non-stage transmission Gross weight(kg) Rear wheel 104 Operation Automatic centrifugal Total 178 type Front wheel 120/80-14 Gear Reduction Tires Type Two-stage reduction Rear wheel 150/70-13 0.83~2.2 Reduction 1st RR Ground clearance 140 mm ratio 2nd 10.41 Perform- Braking distance (m) 7.9m/30km/h ance Min. turning radius 2600mm Front Caster angle 28° Moving Device Starting motor Axle Trail length 140mm Starting system Tire pressure Front 2.0 Type liquid cooled 4 stroke (kg/cm) 1 Rear 2.25 Cylinder arrangement Single cylinder person Combustion chamber type Semi-sphere Turning Left 40? Valve arrangement O.H.C.4V angle Right 40? Bore x stroke (mm) 54 x 54.5 Brake system Front Disk brake Compression ratio 11.7:1 type Compression pressure Rear Disk brake 15 Device Damping (kg/cm) Front Telescope Max .horsepower (ps/rpm) 15/8750~9000 Engine Suspension Max. torque (kg m/rpm) 1.17/8500~8750 type Rear DOUBLE SWING Intake Open 8 °BTDC Port (1mm) Close 31° BTDC Frame type PIPE UNDER BONE timing Exhaust Open 32° BTDC (1mm) Close 6 °BTDC Valve Intake 0.10 mm clearance Exhaust 0.10 mm Idle speed (rpm) 1850rpm Lubrication type Forced pressure & System Lubrication Wet sump Oil pump type Inner/outer rotor type Oil filter type Full-flow filtration Oil capacity 1.2 L Exchanging capacity 1.0 L Cooling Type Liquid cooling -2-