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15. IGNITION SYSTEM

15-0

MX’er 50

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IGNITION SYSTEM

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SERVICE INFORMATION -------------------------------------------- 15- 2

TROUBLESHOOTING ------------------------------------------------- 15- 3

IGNITION COIL -------------------------------------------------------- 15- 4

A.C.GENGRATOR ------------------------------------------------------ 15- 5

CDI UNIT INSPECTION----------------------------------------------- 15- 6

Summary of content (7 pages)

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5.
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15. IGNITION SYSTEM CDI Unit ntrol MX’er 50 Ignition Coil Ignition Switch Spark Plug A.C.
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15. IGNITION SYSTEM MX’er 50 SERVICE INFORMATION GENERAL INSTRUCTIONS • Check the ignition system according to the sequence specified in the Troubleshooting. • The ignition system adopts CDI unit , change gear control and the ignition timing cannot be adjusted. • If the timing is incorrect, inspect the CDI unit, A.C. generator, change gear control and replace any faulty parts. Inspect the CDI unit with a CDI tester • Loose connector and poor wire connection are the main causes of faulty ignition system.
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15. IGNITION SYSTEM MX’er 50 TROUBLESHOOTING High voltage too low • Weak battery or low engine speed • Loose ignition system connection • Faulty CDI unit • Faulty ignition coil • Faulty pulser coil Normal high voltage but no spark at plug • Faulty spark plug • Electric leakage in ignition secondary circuit • Faulty ignition coil Good spark at plug but engine won‘t start • Faulty CDI or incorrect ignition timing • Faulty change gear control unit • Improperly tightened A.C.
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15. IGNITION SYSTEM MX’er 50 IGNITION COIL INSPECTION Continuity Test °ØThis test is to inspect the continuity of ignition coil. Measure the resistance between the ignition coil primary coil terminals. Resistance (20¢J): 0.2_ 0.3W Measure the secondary coil resistance between the spark plug cap and the primary coil terminal as Figure A shown. Resistance (20¢J) (with plug cap): 8.0_ 9.
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15. IGNITION SYSTEM Performance Test Remove the ignition coil. Inspect the ignition coil with an ignition coil tester. MX’er 50 Ignition Coil Ignition Coil CDI Tester °ØFollow the ignition coil tester manufacturer‘s instructions. 1. Turn the changeover switch to 12V and connect the ignition coil to the tester. 2. Turn the power switch ON and check the spark from the watch window.
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15. IGNITION SYSTEM MX’er 50 CDI Unit CDI UNIT INSPECTION Remove the seat and battery cover. Disconnect the CDI coupler and remove the CDI unit. CDI CIRCUIT INSPECTION Measure the resistance between the terminals. Replace the CDI unit if the readings are not within the specifications in the table below. °Ø• Due to the semiconductor in circuit, it is necessary to use a specified tester for accurate testing. Use of an improper tester in an improper range may give false readings.