3.5 ob model 8906

[wrdude]

I picked up a boat and a couple of these outboards. The one has been ran a bit and the other only has a couple tanks through it. I can't get the older one to run right. The carb was varnished real bad to the point i had to heat the body to get the barrel out.All orifices are clear but it will not run right. I am thinking of trying the new motor but i want to make sure i'm setting it up right. I started at a base setting of 4 turns out and am going from there. Clockwise to lean and ccw to richen is this correct?

[MECOA]

You do have this carb...

http://www.mecoa.com/kb/carbs/carb35.pdf

As for number of turns it's just a starting point and it may require 6 or more turns out. Since you have 2 engines and one runs ok, swap the carbs, this would give you a clue if it's a carb or engine issue.

[wrdude]

yep that's the carb. the one in question is the gold and the new one is black. I've put the new one on the boat now but haven't had a chance to try it yet.

[wrdude]

Just put the black carb on the old motor. Seems to run better but i have to wait a couple days to get it out to the pond. I have started at 4 turns out and will go from there.

[wrdude]

Alright i tried out the new carb. Seemed to run pretty good. Now where can i order a new carb to replace the one i took of my other motor? Seems to be a bit tricky to tune as i can't tell if it's lean or rich. ANy pointers?

[MECOA]

The Gold one should work good on it. I would suggest trying a new gold one. 80-8902

[wrdude]

I just called you guys yesterday and ordered one as well as some other bits. thanks. Now when i hold it wide open it goes but then after a maybe 10 seconds it wants to die out then if i let off just a bit it picks up and goes again. any clue if this sounds rich or lean?

[anoolite76]

If it's rich it will sound like it doesn't max out on RPM's. If it's lean it goes much higher on RPM's and dies out after a few seconds. Try to run 40% nitro and it will be very reliable on the water.