2007 Johnson 2 HP 4-Stroke Service Manual, Page 57Get this manual

2007 Johnson 2 HP 4-Stroke Service Manual, Page 57

IGNITION AND ELECTRICAL TROUBLESHOOTING
TROUBLESHOOTING
Perform the following ignition system tests when engine is hard to start to determine if the cause is in the ignition or other systemSTART Sparks OK The cause is not in the ignition system NO

Check spark conditionNo or weak sparks

Check ignition timing by using timing light(30 BTDC at 1900 RPM) NO

Check if spark plug is in good condition (Refer to SPARK PLUG on page 46)OK Disconnect the emergency stop switch lead wire (black)No or weak sparks Check the air gap between the igniter unit core and the flywheelAir gap: 0.02 in(0.5 mm) OK Check the igniter unit resistance (Refer to Igniter Unit on page 58)Primary: 0.5 to 0.9 Secondary: 10 to 16 OK

Back to 2007 Johnson 2 HP 4-Stroke Service Manual