General Information
Specifications - General
Items CX50
SR
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
Coolant
Liquid Performance
Mini Coolant or Antifreeze
Displacement 49.8
cc
Bore and stroke
39 mm x 41.7 mm, “V” head
Ignition system
Electronic, analog advance
Spark plug
Champion 8339-1, 8332-1 hotter, 8904-1 colder
Gap 0.023” – 0.025” (0.58 – 0.64 mm)
Ignition timing
0.040” (1.02 mm) Before Top Dead Center (BTDC)
Fuel type
High octane pump gasoline
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)
Carburetion
19 mm Dell’Orto
Main Jet 95
Slow (Pilot) Jet 60
Float Height 16mm + 0.5mm (0.63” + 0.020”)
Transmission
Speed Single
Final drive ratio
14/38 T
Chain
100 links 420
Transmission / clutch oil type
Cobra Venom 3 Shoe Clutch Milk
Quantity 235 ml (8.0oz)
5
