1. GENERAL INFORMATION MXU 300/250 SPECIFICATIONS (MXU 250) Model No. LB50 Air cleaner type & No Wet type element Fuel System Name & Type MXU 250 12.5 L (2.63 lmp Fuel capacity Overall length 1810 mm (72.4 in) gal, 3.25 US gal Carburetor Overall width 1050 mm (42 in) Type PTG Overall height 1110 mm (44.4 in) Main jet NO. 98 Wheel base 1170 mm (46.8 in) Venturi dia. 22 mm (0.88 in) Engine type O.H.C. Throttle type PISTON Displacement 249 cm3 (15.2 cu-in) Full transistor Ignition System Electrical Equipment Type Fuel Used 92# nonleaded gasoline digital ignition Front wheel 112 kg (246 lbs) Ignition timing 5°BTDC/1000rpm Dry weight Rear wheel 102 kg (224 lbs) Spark plug DPR7EA-9 Total 214 kg (471 lbs) Front wheel 116 kg (255 lbs) Spark plug gap 0.60.7mm (0.002 0.003 in) Curb weight Rear wheel 110 kg (242 lbs) Battery Capacity 12V12AH Total 226 kg (497 lbs) Dry, centrifugal Tires Front wheel 22*7-10 Clutch type automatic Rear wheel 22*10-10 Clutch operation system Automatic (V-belt) Ground clearance 125 mm (5 in) Drive Train Helical gear/spur Min. turning radius 2900 mm (116 in) Primary reduction system gear Starting system Electric/Recoil starter Secondary reduction system Chain drive Type Gasoline, 4-stroke Primary reduction ratio 26.5 Cylinder arrangement Single cylinder Secondary reduction ratio 10.02 Combustion chamber type Semi-sphere Reverse ratio 50.9 Valve arrangement O.H.C., chain drive Bore x stroke 72.7 x 60 mm FR/RR tire rolling 1759/1759 mm Moving Device (2.9 x 2.4 in) circumference (71.8/71.8 in) Compression ratio 10.3:1 Front 0.28 kg/cm (28 15 kgf/cm (1500kPa, Tire pressure Kpa, 3.2 psi) Compression pressure Rear 213 psi) Turning Left 40° Intake valve Open 8.1° BTDC Engine angle Right 40° (at 1 mm lift) Close 41° ABDC Exhaust valve Open 37° BBDC Brake system type Front Disk brake (at 1 mm lift) Close 7.9° ATDC Rear Disk brake Valve clearance Intake 0.1 mm (0.004 in) Front Double wishbone (cold) Exhaust 0.1 mm (0.004 in) Suspension type Idle speed (rpm) 1500rpm Rear Link suspension Lubrication type Forced pressure & System Lubrication Wet sump Frame type Double cradle Oil pump type Trochoid Oil filter type Full-flow filtration Oil capacity 1.6 L (1.4 lmp qt, 1.7 Us qt) Oil exchanging 1.4 L (1.23 lmp qt, capacity 1.48 Us qt) Cooling Type Liquid cooled 1-2