1988-1991 Yamaha Sno Scoot SV 80/E Snowmobile Service Manual, Page 151Get this manual
IGNITION SYSTEM
IELECI iii I
RESISTANCE lOUT OF MEETS SPECIFICATION SPECI ICATION
ISource coil is faulty, replace it
9Pick-up coil resistance test: Disconnect COl magneto coupler (Yellow, White, WhiteRed, Black) Connect Pocket Tester (YU-03112) to pick-up coil leads (WhiteRed, Black)Tester (+) lead Tester (-) lead WhiteRed CD lead Black lead