Cobra Electronics King 2003 - Manual (Page 5)

4
General Information
Specifications - General
Items KING
Dimensions
Wheelbase 39” (991mm)
Wheel size 10” (254mm) rear, 12” (305mm) front
Seat height 26” (660mm)
Engine
Type 2-stroke, single cylinder, reed valve
Cooling system Liquid-cooled
Displacement 49.8 cc
Bore and stroke 39 mm x 41.7 mm
Ignition system Electronic
Spark plug Splitfire SF406B
Gap 0.023” – 0.025” (0.58 – 0.64 mm)
Ignition timing 0.050” (1.3 mm) Before To Dead Center (BTDC)
Fuel type Sunoco MO2
X
or 93 octane pump gasoline
OTHER RACE FUELS ARE NOT RECOMMENDED
Oil type Cobra Venom 2-cycle Race Oil
Fuel / oil mix ratios Between 32:1 and 40:1 (after engine Break-In is
complete)
Carburetion 19 mm Dell’Orto
Main Jet 94
Slow (Pilot) jet 65
Float Height 16mm + 0.5mm (0.63” + 0.020”
Transmission
Speed Single
Clutch Cobra 3 shoe
Final drive ratio 13/39 T
Chain 100 links 420
Transmission / clutch oil type Cobra Venom 3 Shoe Clutch Milk, or Dexron III
Quantity 235 ml (8.0oz)