Yamaha Marine Outboards F4A/F4 Factory Service Manual, Page 288Get this manual

Yamaha Marine Outboards F4A/F4 Factory Service Manual, Page 288

Quality of the image is intentionally reduced!

IGNITION SYSTEM
9 When checking the spark gap, do not touch any of the connections of the spark gap tester lead wires9 When performing the spark gap test, take special care not to let sparks lea