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15. IGNITION SYSTEM

15-0

Mongoose/KXR 90/50

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IGNITION SYSTEM

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SERVICE INFORMATION -------------------------------------------- 15- 3

CDI UNIT INSPECTION----------------------------------------------- 15- 5

IGNITION COIL -------------------------------------------------------- 15- 7

PULSER COIL----------------------------------------------------------- 15- 8

IGNITION TIMING INSPECTION ----------------------------------- 15- 8

Summary of content (9 pages)

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15. IGNITION SYSTEM Mongoose/KXR 90/50 Ignition Coil A.C.
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15.
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15. IGNITION SYSTEM Mongoose/KXR 90/50 SERVICE INFORMATION GENERAL INSTRUCTIONS • Check the ignition system according to the sequence specified in the Troubleshooting. • The ignition system adopts ignition unit, change gear control and the ignition timing cannot be adjusted. • If the timing is incorrect, inspect the ignition unit, A.C. generator, change gear control and replace any faulty parts.
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15. IGNITION SYSTEM Mongoose/KXR 90/50 TROUBLESHOOTING High voltage too low • Weak battery or low engine speed • Loose ignition system connection • Faulty ignition 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 ignition unit or incorrect ignition timing • Faulty change gear control unit • Improperly tightened A.C.
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15. IGNITION SYSTEM Mongoose/KXR 90/50 CDI Unit CDI UNIT INSPECTION Remove seat. (!2-3) Disconnect the CDI coupler and remove the CDI unit. Measure the resistance between the terminals using the electric tester. ＊ • 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. • Use a YF-3501 Electric Tester.
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15. IGNITION SYSTEM KXR 90(ON ROAD) Probe⊕ (-)Probe Black Unit: MW Black/ Blue/ Yellow Yellow Black Mongoose/KXR 90/50 °¤ Black/ Yellow °¤ Blue/ Yellow °¤ °¤ Green 6.1~6.8 6.1~6.8 Black/Yellow Black Green °¤ °¤ °¤ °¤ °¤ 6.1~6.8 Note: The readings in this table are taken with a YF-3501 Tester. Blue/Yellow Green Mongoose/KXR 50(OFF ROAD) Unit: MW Probe⊕ (-)Probe Black/ Yellow Black/ Yellow Black/ White Blue/ Yellow Green °¤ °¤ °¤ °¤ °¤ 15.73 4.
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15. IGNITION SYSTEM Mongoose/KXR 90/50 IGNITION COIL REMOVAL Remove the spark plug cap. Disconnect the ignition coil wires and remove the ignition coil bolt and ignition coil. Ignition Coil INSPECTION CONTINUITY TEST ＊ The CDI unit is not adjustable. If the timing is incorrect, inspect the CDI unit, pulser coil and A.C. generator and replace any faulty parts. Measure the resistance between the ignition coil primary coil terminals. Resistance: Mongoose/KXR 90) : 2.2_ 2.6W/20°C Mongoose/KXR 50) : 3.
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15. IGNITION SYSTEM Mongoose/KXR 90/50 PULSER COIL INSPECTION ＊ This test is performed with the stator installed in the engine. Disconnect the A.C. generator connector. Measure the pulser coil resistance between the blue/yellow and green wire terminals. Resistance: Mongoose/KXR 90): 121.1W/20°C Mongoose/KXR 50): 80_ 160W/20°C Pulser Coil Lead Note: The readings in this table are taken with a YF-3501 Tester. REMOVAL Refer to chapter 14 for the A.C. generator removal.