Posted by Jim.ME on February 09, 2021 at 07:11:20 from (67.242.178.40):
In Reply to: 1970 MF150 posted by quade365 on February 08, 2021 at 13:35:54:
Others may have more or different thoughts but here are mine.
So the pictures are of the original carb, to your knowledge? I have pointed out some of the parts on it for you.
It appears the main jet adjusting needle is missing, evidenced by the wrong screw in it. According to the parts book, that carb was originally equipped with the solenoid shutoff main jet set up in that location, which may explain the screw. It also appears the idle air adjusting screw may be missing.
The 150 parts book shows the part number as 520736M92, which appears to be a Marvel Schebler TSX947, for the Perkins engine. Without tearing it down to see what else might be missing, modified, or otherwise compromised; you will need at least a major kit and maybe some other parts, not in the kit, or a basic kit with many parts, to fix it. So it is not going to be as simple as here's a kit number that will have everything you need. According to info I find on several sites and catalogs it uses the same basic kit as the TSX882, getting the right other parts will be the bigger challenge. I support purchasing from YT, or ASAP, you may need to talk with one of the sites specializing in carbs to get all the parts you need.
Some other options are send it to a rebuilder, or buy another. You might find complete carb you could rebuild from a salvage yard, or someone on here might have one. Knowing your general location might bring out some ideas. If you decide to purchase, confirm things like how the choke is set up, center to center of mounting stud/bolt holes, throttle linkage, and fuel inlet location.
Also, if you get a new/different carb it may have the solenoid main jet or the adjustable jet.
Here are a couple things you can study to help you.
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