Bill42mb

Here's a short video, ran ok (not so much for this clip) but then starved for fuel after maybe 5 minutes every time. Loosened the fuel cap, drained and cleaned the tank, opened up the carb.. seems very sensitive to fuel level/sloshing. Diaphragm maybe?
 
 
Ran great while clamped to a 2x4 in a vise but as soon as it got near water.. or under a load... oh well. 

Here's a short video, ran ok (not so much for this clip) but then starved for fuel after maybe 5 minutes every time. Loosened the fuel cap, drained and cleaned the tank, opened up the carb.. seems very sensitive to fuel level/sloshing. Diaphragm maybe?
 
 
Ran great while clamped to a 2x4 in a vise but as soon as it got near water.. or under a load... oh well. 

Very cool, always fun to see these in action even if they’re finicky!  Thanks for adding the video for us.

Thanks for sharing!
The fuel tanks don't hold much and empty fairly quick. 5 minutes would seem about right for it sucking in air bubbles from rocking and shaking.

Here's a short video, ran ok (not so much for this clip) but then starved for fuel after maybe 5 minutes every time. Loosened the fuel cap, drained and cleaned the tank, opened up the carb.. seems very sensitive to fuel level/sloshing. Diaphragm maybe?
 
 
Ran great while clamped to a 2x4 in a vise but as soon as it got near water.. or under a load... oh well. 

Here's a short video, ran ok (not so much for this clip) but then starved for fuel after maybe 5 minutes every time. Loosened the fuel cap, drained and cleaned the tank, opened up the carb.. seems very sensitive to fuel level/sloshing. Diaphragm maybe?
 
 
Ran great while clamped to a 2x4 in a vise but as soon as it got near water.. or under a load... oh well. 

Here's a short video, ran ok (not so much for this clip) but then starved for fuel after maybe 5 minutes every time. Loosened the fuel cap, drained and cleaned the tank, opened up the carb.. seems very sensitive to fuel level/sloshing. Diaphragm maybe?
 
 
Ran great while clamped to a 2x4 in a vise but as soon as it got near water.. or under a load... oh well. 

I was given what was described as a "really small outboard" which turned out to be one attachment of many that were available. I wanted to get it running, but when I took the carb apart the check ball was missing, as well as the roller that goes under the spring. Does anyone know the diameter of the roller? I'd like to get it running this weekend so I can take it to the lake! 

So, I took the carb apart again, and reassembled it properly. Little bit of fiddling with the mixture and it runs nicely. Hunts slowly at idle, but when the throttle is opened up it runs quite well. Dunked it in the pool and it wanted to pull me in! I'll get a video when I put it on the canoe next week and post the link if anyone is interested. 

So, I took the carb apart again, and reassembled it properly. Little bit of fiddling with the mixture and it runs nicely. Hunts slowly at idle, but when the throttle is opened up it runs quite well. Dunked it in the pool and it wanted to pull me in! I'll get a video when I put it on the canoe next week and post the link if anyone is interested. 

So, I took the carb apart again, and reassembled it properly. Little bit of fiddling with the mixture and it runs nicely. Hunts slowly at idle, but when the throttle is opened up it runs quite well. Dunked it in the pool and it wanted to pull me in! I'll get a video when I put it on the canoe next week and post the link if anyone is interested. 

So, I took the carb apart again, and reassembled it properly. Little bit of fiddling with the mixture and it runs nicely. Hunts slowly at idle, but when the throttle is opened up it runs quite well. Dunked it in the pool and it wanted to pull me in! I'll get a video when I put it on the canoe next week and post the link if anyone is interested. 

As suggested a paperclip works well for making a replacement rod. You'll probably need a new diaphragm as well.

I'll get a picture of the inside later today, the arm doesn't have a hole in it and the 1/16" balls that I bought are a perfect fit, so I'm thinking that's what type it is. 
The air cleaner did have foam, but I cleaned it all out. The engine was very clean overall and has excellent compression. I'll open up the gearbox and see what's in there and give it a good cleaning. My "weekend" actually runs into next week, so maybe I have time lol
Thanks for all the input, I'll get further into it maybe this evening, and take more pictures. I'm glad I found this forum, and appreciate the help!!

Kind of hard to tell without seeing inside the carb, the service info suggest that carbs with the external check valve on the inlet contain the diaphragm arm with the rubber pad.
 
David

Welcome to the forum!  That’s a great outboard you have there.  There are two size balls used for those carbs, 1/16 and 3/32 so not sure which one you have. Do you have a photo of the inside where the ball seats?  The little rod that the spring legs ride on is not easy to find but I’ve had success just cutting one from small piece of rod or something, even used a heavy duty paper clip once.  Or, you can go a more precise route and get the correct diameter rod at a hobby store. K&S makes a bunch of small rod, brass tubing, etc. and a lot of good ACE hardware stores even carry it.  I believe the little roller rod is 0.063-0.065” in diameter.
 
Also, be sure to click the Ohlsson Rice home page as there is a really good carburetor rebuild tutorial if you get stuck.

I was given what was described as a "really small outboard" which turned out to be one attachment of many that were available. I wanted to get it running, but when I took the carb apart the check ball was missing, as well as the roller that goes under the spring. Does anyone know the diameter of the roller? I'd like to get it running this weekend so I can take it to the lake!