1957 Farmall 450

craig reavley · May 9, 2011

After sitting for several years I just got dads 450 running last night. Runs out great, but having trouble dialing in the carberator for idle. How do you set the carb settings? I cleaned the card inside and out and blew out all jets. The tractor had some really thick gas in it, that I had to clean out of the tank, glass bowl, fuel line, and carb. Does anyone have a diagram of the internal jets labelled so I can check the idle circuit to make sur it is open?

pete 23 · May 9, 2011

The idle jet is the long one sticking up from lower carb bowl inside carb and has a very small hole, number 72, 74 or 75 which measure out to about .022 of an inch. Idle mixture screw is one near carb mounting base setting at a slight angle, idle speed is one where gov connects to carb and the main jet adjusting screw is bottom one with packing nut . Turn main jet out at least 3 l/2 turns and others where idle is low enough and smoothest.

1957 Farmall 450

craig reavley

Member

pete 23

Well-known Member

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