Boat motor issues

[big walleye]

Question for those of you that know anything about boat motors. I have a 25hp evinrude that has been very good for me over the years. It by the way is a 1986 model. The only issue I have is when I troll. It will be going along nicely when all of a sudden it just dies. It stops so suddenly that I always fear that I hit something. One pull later and it is running again. This will repeat itself once an hr. Any ideas and how can I get it corrected.

On another note I have parked my boat for the winter. Yes it was sad and I had no choice but to have a beer while I was doing it but it is that time. Bring on the hard water.

[rgfixit]

My johnson 30 hp, same vintage, will do the same thing. Basically the plugs are loading up and fouling out. I went to a different prop so I could troll at a higher rpm and still move approximately the same speed.

RG

[big walleye]

Thanks RG

[monarkman]

What do you mean you parked your boat for the winter the water isn't even hard yet