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Mercury ignition system

qhn

Regular Contributor
Hello,
Can one or some of y'all experienced and experts help me confirm whether the ignition of a 1974-1986 9.8hp Mercury will fit a 1973 9.8hp model?
Basically, my motor is a 1973 9.8hp that has bad sets of points and bad ignition wires to the (-) of the ignition coils. I am intending to replace the ignition system with a newer model that has a switch box instead. I hope y'all can assist me from your experience. Do I need a new flywheel as well?
Many thanks in advance for any suggestion or comment
Q.
 
I believe it requires a different fly wheel. Yep, 1973 uses 4473A1 flywheel, 1974 uses 5277A1, 5277A3 or 6105A1 flywheel.
 
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