1988-1991 Yamaha Sno Scoot SV 80/E Snowmobile Service Manual, Page 38Get this manual

1988-1991 Yamaha Sno Scoot SV 80/E Snowmobile Service Manual, Page 38

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SPARK PLUG INSPECTION WARNING:
3 Inspect:

e Electrode CD WearDamage Replaceelnsulator color Normal condition is medium to light tan colorDistinctly different color Check the engine