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Here’s the Merc float I’ve used in TN/TD carbs. The small spring on top is removed and then a small hole is drilled thru the floats insert. I drill it small enough so it is snug on the needle which allows for setting the float level. Too big a hole and the float will slide on the needle.
What was that about ugly TN’s run good? I couldn’t agree anymore!
I don’t have a lot of experience with these but keeping the carb
from running over has been a real challenge for me. Picking up
a couple carburetors to use as a replacement, witness marks
from beating on side of the carburetor seem to indicate that this
is not an uncommon problem. I second polishing the needle
and seat.
Making a float – I would suggest Mumbles recommendation.
If the float is out of round or the float pin isn’t centered it may
cause the pin to lean against the hole in the cover restricting
its up & down movement. That’s my thinking anyway.
Tubs.
An update here. It runs really well static. I can’t wait to get it out on the lake next spring to test it under load. I acquired a 1950 TN 26 from a local guy. Saw the bottom of the motor sticking out of a trailer with a bunch of other stuff. I left the owner a note to call. He called and said it was mine if I wanted it. The history was it was his grandpa’s, then got passed to his uncle until it came to him. He said he was unsure what was wrong with it but that it never ran when his uncle had it, and he believed it sat for a number of years while his grandpa had it. The motor was stuck and missing one screw from the recoil. It came with a home-built stand too. As soon as I got it home I loaded the cylinders with marvel mystery oil. It soaked for about a week. tried pulling it over with no success. took the tank off and put a strap wrench on the flywheel. Very little effort and it broke loose. happened to be grounding the coil wire when the motor broke loose and got a tingle. cleaned up the points and it fixed the bottom cylinder with no spark issue. each cylinder was in the 72-74 PSI compression range. Took the carb off and the oil-soaked carb came apart easier than the TD 20. the primer assembly came out with no problem. I am awaiting the time to rebuild/assemble everything and see if she won’t fire up. The cork looked pretty good in this one so will try using it as is.
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