My 1972 Eska 3.0 hp boat engine han no spark. I need help?

Question

I dont know how to remove the flywheel.

Answer 1

Possibaly could be the coils.

Seems that these smaller engines have problems with vibrations causing the coils to quit.

Answer 2

magneto

Answer 3

hold it still with a lapped leather or rubber belt wrapped around it and undo the nut.  warning: beware if it's a Left hand thread.  may need special tool to remove, depending on design of flyheel and whether shaft is parallel or taper, and how tight it is.