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1984 90hp Mercury outboard

"This motor is larger than wha

"This motor is larger than what I work on, but will post some notes here from the service manual for you:

Intermittant, weak or no spark output at 3 spark
plugs (a complete bank of 3 cylinders) usually is
caused by a bad STATOR or SWITCH BOX.

So perhaps those two need to be investigated..."
 
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