ELECTRICAL
3. Inspect the shift indicator contacts, shift drum, pin and spring.
Verify the pin is not sticking in the drum or is damaged. Replace
any worn or damaged components.
IGNITION SYSTEM
Overview
The Cobra 50 ATV ignition system consists of a simple
magnetodriven system that includes a stator Pulser Coil,
CDI Box,
Ignition Coil and related wiring / connectors.
Timing is non-adjustable on this ignition system.
Ignition System Troubleshooting
No Spark, Weak or Intermittent Spark
• No 12 volt power on brown (BR) wire at CDI box or no
CDI box ground path from the black (B) wire
• Spark plug gap incorrect
• Fouled spark plug
• Faulty spark plug cap or poor connection to high tension
lead
• Related wiring loose, disconnected, shorted, or corroded
• Engine Stop switch or ignition switch faulty
• Poor ignition coil ground
• Faulty stator (measure resistance of all ignition related
windings)
• Incorrect wiring (inspect color coding in connectors etc)
• Faulty ignition coil winding (measure resistance of
primary and secondary)
• Sheared flywheel key
• Flywheel loose or damaged
• Excessive crankshaft runout on magneto. (RH) end
should not exceed .005”
• Faulty CDI module
Installation
1. Install spring and pin into shift drum.
2. Install switch with new O-ring. Route wires through crankcase.
3. Install retaining screws.
4. Torque screws to 4.5 - 6 Nm (39 - 52 in. lbs.).
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