mercury39 point gap

[thormcse]

My father in law has a little boat with a little motor, Mercury 39 3.9 hp.<br />We need to know the gap on the points. Thank you in advance for any help you give.

 

[Walter]

Re: mercury39 point gap

I believe the point gap is .020"<br /><br />If I found out differently...I'll get back to you.<br /><br />Walt

 

[thormcse]

Re: mercury39 point gap

Thank you very much. Have a nice day, John

 

[Rex]

Re: mercury39 point gap

THE CLOSER YOU SET THEM THE LESS POWER YOU <br />WELL HAVE. IT SLOW YOUR TIMING DOWN.<br />I WOULD START AT .030 TO .032

 

[SeaDawg]

Re: mercury39 point gap

Rex, I'll try out your advice this weekend, I just bought a Merc 39, s/n 1782558. I believe it is a 1965 model.

 

[rickdb1boat]

Re: mercury39 point gap

SeaDawg <br /><br />65' it is<br /><br /> web page<br /><br /> (John, .020 on the point gap)

 

[SeaDawg]

Re: mercury39 point gap

Thanks! By chance do you also know the spark plug type recommended for my 1965 3.9 merc,and the gap?<br /><br />I'll start at .020 for the points too.<br /><br />Ron

 

[rickdb1boat]

Re: mercury39 point gap

NGK B6S .025 Stock # 3510

 

[SeaDawg]

Re: mercury39 point gap

Thanks! Now I can play over the weekend with it.<br /><br />Later, Ron