20 hp merc. 1971

[Gary V]

I have a 71 20 hp. that has no fire to the plugs. I have rewired the motor from the points out. How do I check the coils? What else do I look fore Thanks Gary

 

[Laddies]

Re: 20 hp merc. 1971

There is a good chance it's the insullater boxes on the pointd that are bad but heres the test for the system from CDI

 

[Gary V]

Re: 20 hp merc. 1971

Thanks for the info. The isolator blocks are cracked, any ideas where I can get them? I am new at working on old motors . thanks Gary

 

[Laddies]

Re: 20 hp merc. 1971

CDI or mercury dealers