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Found 2 results

  1. Hi All, hopefully this post is in the right forum - engines or general IH tech? I have a '71 444 tractor, and have been having a heck of a time with the float needle sticking and flooding. If I can get to it in time when it starts to sputter, I can rap on the float bowl with a wrench and it will sort itself out. But too often, it will die before I can do that and then it's a bear to get started again. I have installed an electronic ignition to replace the points since they seemed to get burned easily when trying to start it when it's flooded. Two years ago I rebuilt the carb, and it worked great for a few months after that. All I can think of is that some kind of grit is getting into the carb and causing the needle valve to stick open. For its age, it wouldn't be surprising if the tank has some rust. Haven't really been able to tell very well by looking inside, I probably need to drain it to get a better look. Anyway, I don't know how effective the sediment bowl is. I've thought about adding an automotive type fuel filter, but was advised that this might lead to other problems because the filter is too restrictive. However, I noticed that my shop manual shows a fuel pump on this tractor. Mine doesn't have one. When or where it would have been removed I have no idea. If I replaced the pump, would I be able to put a better filter on - downstream of the pump - without worrying about fuel starvation? Does it sound like that would help the situation? Or is the only remedy cleaning out the fuel tank and the whole fuel system to make sure there's no dirt or rust? And if a pump is worth trying, would I be okay just getting an aftermarket electric fuel pump that's rated for the right pressure output? And what is that? I guess I'd never thought about it back when I had cars with carburetors, but what keeps the fuel pump from overwhelming the float valve and just pushing fuel in and flooding it? (Motorcycles are easier - gravity-fed and no pump). Is it just matching the right pump pressure to the carb/float valve? Thanks for any help. It's warming up here in Minnesota, and it'll soon be time to that that tractor working again!
  2. I’m having trouble with this tractor, the 3pt hitch will move up and down at high revs only but won’t lift 2 pounds.. power steering works at idle. On the control valve the “fast&slow” spool it’s free turning like it’s not connected to anything but the knob pushes out with the tractor running seeming like there’s fluid pressure, I’m not sure how it works I’m stumped any help would be great! Thanks
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