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1. GENERAL INFORMATION MXU 250R/300R
SPECIFICATIONS (MXU 250R)
Model No. LG50AD Air cleaner type & No Wet type element
Fuel System
Name & Type MXU 250R 12.5 L (2.63 lmp
Fuel capacity
Overall length 1980 mm (79.2 in) gal, 3.25 US gal
Carburetor
Overall width 1110 mm (44.4 in) Type PD
Overall height 1100 mm (44.0 in) Main jet NO. 98
Wheel base 1200 mm (48.0 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 117 kg (257.4 lbs) Ignition timing 5°BTDC/1000rpm
Dry weight Rear wheel 105 kg (231 lbs) Spark plug DPR7EA-9
Total 222 kg (488.4 lbs)
Front wheel 124 kg (272.8 lbs) Spark plug gap 0.60.7mm (0.002
0.003 in)
Curb weight Rear wheel 112 kg (246.4 lbs)
Battery Capacity 12V14AH
Total 236 kg (519.2 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 240 mm (9.6 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
Forward drive high ratio 10.01~26.53
Cylinder arrangement Single cylinder
Reverse ratio 19.21~50.92
Combustion chamber type Semi-sphere
Valve arrangement O.H.C., chain drive
Bore x stroke 72.7 x 60 mm FR/RR tire rolling 1733(K)/1767(M)-FR
Moving Device
(2.9 x 2.4 in) circumference 1743(K)/1796(M)-RR
Compression ratio 10.3:1 Front
15 kgf/cm (1500kPa, Tire pressure 0.28 kg/cm (28
Compression pressure Rear Kpa, 3.2 psi)
213 psi) (Rider only)
Intake valve Open 5° BTDC
Engine
Turning Left 36°
(at 1 mm lift) Close 41° ABDC angle Right 36°
Exhaust valve Open 37° BBDC
Brake system type Front Disk brake
(at 1 mm lift) Close 5° ATDC Rear Disk brake
Valve clearance Intake 0.1 mm (0.004 in)
(cold) Exhaust 0.1 mm (0.004 in) Front Double A-Arm
Suspension type
Idle speed (rpm) 1500 rpm
Forced pressure & Rear Swing Arm
Lubrication type
System
Lubrication
Wet sump
Oil pump type Trochoid Frame type Double cradle
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