mxu 250 300 Workshop-manual : Page 5

          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


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