B
bob
i have had an erratic starting prroblem with the yanmar 50 hp on my 40.5...sometimes when i would turn the key, it would be dead...however, it would usually start fine...i thought i had a solenoid problem....another 40.5 owner had had the same problem, and told me that a relay needed to be installed in the electrical circuit...i've done so and the problem has been completely solved....if any 40.5 owners have the same problem, i can give you details concerning the relay and installation...you can email me at sailor1543@aol.com......bob