2003 DCx65 Owners And Service Manual

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Dimensions Wheelbase 44.75″ (1136 mm) Wheel size 14″ (356 mm) front, 12″ (305 mm) rear Seat height Engine Type 2-stroke, single cylinder, reed valve Cooling system Liquid-cooled Displacement 64.8 cc (3.95 Cubic inches) Bore and stroke 43 mm x 44.6 mm Ignition system Electronic Spark plug Splitfire SF406B Gap 0.023″ – 0.025″ (0.58 – 0.64 mm) 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 32:1 to 40:1 Ignition timing 0.050″ Carburetion 28 mm PWK style Main jet 128 Slow (Pilot) jet 38 Jet needle JJH 3rd position from the top Float height 19 mm + 0.5mm (0.75″ + 0.020″) Transmission Speed Six speed Clutch Manual hydraulic Final drive ratio 13/46 T Transmission / clutch oil type 85W 90 Gear Lubricant Quantity 530 ml (18 oz) 6 Chassis Front tire 60/100 x 14 Pressure 10 – 15 psi. Rear tire 80/100 x 12 Pressure 10 – 15 psi. Front fork Cobra USD 35 mm Fork oil type SAE 5 weight Fork oil amount 4 oz (118 ml) Fork oil level Specifications – Torque Values Torque Value ENGINE Fastener ft-lb in-lb Nm Size & Remarks Cylinder head nuts 9.2 110 12 ¼” x 20 Engine oil drain 3 36 4 8 x 1.25 Engine oil fill 2 24 2.7 14 x 1.0 Spark Plug (SP) (SP) (SP) 14 x 1.25 Crank case half 5 60 6.8 6 x 1.0 Crank case cover 5 60 6.8 6 x 1.0 Flywheel rotor nut 40 480 54 10 x 1.25 (G) Clutch hub 40 480 54 10 x 1.25 (G) Units of mm unless otherwise specified (G) denotes the use of wicking / bearing retainer (green) thread locking agent to applied to the mating surfaces of the two components but not the threads. (SP) To apply the proper torque to the spark plug when inserting, one must first screw the spark plug in until the metal gasket ring causes resistance and then turn another 1/8 to ¼ turn.