Massey Ferguson 65 choke

Terry Gunn · Apr 9, 2022

Why does the choke spring back? I have to hold it for a few minutes to warm up. Then when it stays running after several trys, restarts, and holding the choke, it still lopes and wants to die. Thoughts or suggestions

Dieseltech · Apr 9, 2022

It's supposed to spring back. Try backing out the main fuel needle a bit to help in colder weather during warm up.

Eric in IL · Apr 9, 2022

My experience with a 65 is it needs very little choking to start. That hasn't changed since 1966 and two engine overhauls.

Mine starts with no choke at 40 degrees. It will need choke if you try to start it with the throttle open some but I start it at idle.

It may be possible that your carb needs cleaning or there are other mechanical issues.

The return spring is needed on the choke to keep it open.

Terry Gunn · Apr 9, 2022

Thanks, Will do.

Terry Gunn · Apr 9, 2022

Got it. I will play around with it. Thanks

Steve@Advance · Apr 9, 2022

Also try adjusting the idle mix screw.

With the engine warmed up, idle it down to 450-500 RPM. Back the screw out some then turn it in to best idle. Turning it in richens the mix, it adjusts air bleed not fuel.

If the adjustment has no effect, the idle circuit may be clogged. There is an idle jet, and 2 tiny holes in the throttle bore, right where the throttle plate closes against the bore. Important those holes are clear.

Massey Ferguson 65 choke

Terry Gunn

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Dieseltech

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Eric in IL

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Terry Gunn

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Terry Gunn

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Steve@Advance

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