kb0thn
Stainless
- Joined
- May 15, 2008
- Location
- Winona, MN, USA
I have a new to me 1960'ish Hough H50 Payloader. It sat for 15 years and came to me with an inoperative carb. I've rebuilt the carb and have the engine running. But I am mystified by a hole at the bottom of the up-draft carb.
The mystery hole is a nicely machined hole in a cast boss. Hole diameter is 0.162" and there is a nice 0.375" diameter counterbore. No threads. The face isn't machined. The hole is after the choke plate. So if left open, it would be sucking in outside non-filtered air. Or make a nice passageway for ants and bees and whatnot.
Beyond the very poor carb kit instructions, I don't have any documentation on the carb. I don't see any lines running to it in the Payloader manuals.
Any ideas?
(boss / hole in question is centered in the palm of my hand in the first picture looking towards the choke plate. Near my pinkie in the second picture. And dead center in the third picture looking at the carb upside down on my bench)
Thanks,
-Jim
The mystery hole is a nicely machined hole in a cast boss. Hole diameter is 0.162" and there is a nice 0.375" diameter counterbore. No threads. The face isn't machined. The hole is after the choke plate. So if left open, it would be sucking in outside non-filtered air. Or make a nice passageway for ants and bees and whatnot.
Beyond the very poor carb kit instructions, I don't have any documentation on the carb. I don't see any lines running to it in the Payloader manuals.
Any ideas?
(boss / hole in question is centered in the palm of my hand in the first picture looking towards the choke plate. Near my pinkie in the second picture. And dead center in the third picture looking at the carb upside down on my bench)
Thanks,
-Jim