Re: coil questions

[green-thumbs]

Proceed with caution. Magneto make and model is stamped on magneto plate.
Mercury Parts Manual either on line or paper should be studies for each version
of magneto and various Mercury models to pin down what will interchange.
OR contact club member for new replacements. Old coils are very often dead coils
Same can be said for condensers and wiring. Points can often be refurbished for
further use.
Louis
Mark 20 had Bendix Scintilla Magneto
Mark 20H had Repco Phelon Magneto
They have little if anything in common.