2004 COBRA CM50 Specifications And Service Manual

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Filed Under (Cobra) by admin on 14-11-2010

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Dimensions Wheelbase 35.75″ (908mm) Wheel size 10″ (254mm) Seat height 23.9″ (607 mm) Stock #TCHJ0001 22″ (559 mm) Optional # TCHO0001 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 Champion 8339-1, 8332-1 hotter, 8904-1 colder Gap 0.023″ – 0.025″ (0.58 – 0.64 mm) Ignition timing 0.050″ (1.3 mm) Before To 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 14 mm Dell’Orto Main Jet 92 Slow (Pilot) jet 55 Float Height 16mm + 0.5mm (0.63″ + 0.020″) Transmission Speed Single Clutch Cobra 3 shoe Final drive ratio 13/37 T Chain 88 links 420 Transmission / clutch oil type Cobra Venom 3 Shoe Clutch Milk, or Dexron III Quantity 235 ml (8.0oz) Replacing Transmission / Clutch Lubricant Tools needed: • 225 ml (7.6 oz) Cobra Venom 3 Shoe Clutch Milk (Part # MCMUGF01), or Dexron III Automatic Transmission Fluid. • 13 mm combination wrench Procedure: 1. Begin this procedure with a bike that has been ridden more than 5 minutes but less than 10 minutes. It is desired to have the engine warm enough so that the oil ‘runny’ but not so hot that there is risk of being burned by the engine or the oil.

COBRA CX50-OI Specifications And Service Manual

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Filed Under (Cobra) by admin on 14-11-2010

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Specifications – General Items CX50 OI Dimensions Wheelbase 35.75″ (908mm) Wheel size 10″ (254mm) Seat height 22″ (559 mm) 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 Digital Electronic Spark plug Champion 8339-1, 8332-1 hotter, 8904-1 colder Gap 0.023″ – 0.025″ (0.58 – 0.64 mm) Fuel type high octane pump gasoline RACE FUELS ARE NOT RECOMMENDED Injector oil type Cobra Venom 2-cycle Race Oil Fuel / oil mix ratios Fill oil reservoir as required Ignition timing Fixed Carburetion 12 mm Dell’Orto PHVA – PS Main jet 82 Slow (Pilot) jet 42 Float height Non adjustable Coolant Liquid Performance Mini Coolant / Antifreeze Transmission Speed Single Clutch 3 shoe centrifugal Final drive ratio 10/44 T Transmission / clutch oil type Cobra Venom 3 Shoe Clutch Milk • Start bike on stand • First 5 minute period, operate the bike on the stand with a combination of idle and high RPM operation. (avoid prolonged high RPM but spin the rear wheel good at least once or twice per minute) • Allow bike to cool • Ride for 15 minutes maximum (avoid prolonged high RPM operation and avoid abusing the clutch with throttle blipping. • Cool and inspect bike for loose fasteners. • Next ½ hour of operation, avoid prolonged operation at Wide Open Throttle. • After 1 hour of operation o Check for loose bolts and nuts on the bike and retighten as necessary (proper toque values are listed under Specifications). o Clean the carburetor bowl. o Change the transmission / clutch lubricant. • After 8 hours of operation o Change the fork oil. o Have a Certified Cobra Mechanic change the shock oil. • Your bike is now ready for the highest level of competition

INDIAN MECHANICAL- TO- ELECTRONIC SPEEDOMETER CONVERSION KIT INSTALLATION

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Filed Under (Indian) by admin on 31-10-2010

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Speed Sensor Requirement Identification Certain motorcycles are not equipped with a port that will accept a Transmission Speed Sensor. Those models will require a Rear Wheel Speed Sensor. To determine which sensor is required, follow the following procedure: Determine if you have a mechanical speedometer 1. The mechanical speedometer is around 2 ¼” in diameter. 2. On the axle on the left side of the front wheel, there will be a 2″ diameter ‘donut like’ part that the axle passes through. This is the speedometer drive. Attached to the speedometer drive and extending back and up under the fuel tank will be a housed cable. This is the speedometer drive and cable to drive the mechanical speedometer. 3. If these conditions are true, you have a mechanical speedometer. Determine which speedometer drive sensor you need. You must determine if your transmission will accept the transmission sensor. If not, you will need the rear axle sensor. 1. On the top, right, rear of the transmission, will be a 1″ by 1/2″ (approximately) cover held in by one bolt. 2. If you find this then REMOVE the bolt and over. 3. If after removal of the cover you find a larger hole underneath, then you can use the transmission sensor. Figure 1—Transmission Sensor Port (Inset Shows Cover Removed) 4. If you have no cover, or under the cover is not a hole, then you need the rear axle sensor. Be sure to look closely and under the gasket under the cover. 5. If you have no sensor hole, then you need to make sure you have the rear wheel sensor. Contact Thunder Heart Performance if you need to exchange your sensor for a different one. 1.3 Preparation and Painting of the Console Your console is made of Lexan®, which is a clear, durable plastic. It can be painted on the inside (so that outside scratches will not affect the paint), or on the outside. For the best paint results, thoroughly clean the console only with the following cleaners

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