2000 Yamaha YFM400FWA(M) Factory Service workshop Manual, Page 320Get this manual

2000 Yamaha YFM400FWA(M) Factory Service workshop Manual, Page 320

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IGNITION SYSTEM
6.Ignition coil resistance

Disconnect the ignition coil connector from the wire harnessConnect the pocket tester1) to the ignition coil
Tester (+) lead Orange