Altitude would make your carb run richer, not leaner. You have another issue somewhere in the carb. Sounds like in the main circuit somewhere, given the good idle but dying out when power is called for.
Thanks, ljohn. The carb was rebuilt when I got it down here to NM. However, the issue is still present. Because I have to use the choke, it sounds to me like the fuel mixture is still not right. With or without an attachment, the engine stalls out. If I use the choke along with the throttle, the engine goes to full RPM.What happens when you engage your pto with a attachment and motor at full speed ? but sounds like you need to rebuild your carb if it sat for a long time with fuel in the float bowl it would dry up and leave varnish that plugs jets.
Thanks, bolens_kid. With the exception of a couple small things (i.e. the petcock on the fuel tank, battery), it is completely original.That is a very clean looking tractor. Looks to be 100% original.
Thank, ljohn. I'll give that a shot. I called a local mechanic shop and bounced the info off the guy on the phone. He gave me a couple of things to look into also.It does sound like you are running lean. First u need to richen the idle mix up if it is to lean the transition between the circuit will be off it will be readjusted later. Have your high end needle set 2 1/2 turns out from seated and low end should be about 1 1/2 out those are good starting points. Bring it up to full speed and adjust the high end out until the speed drops slightly then go to idle and adjust the same way but adjust for a smooth idle now run it back up as long as nothing is blocked it should transition just fine. I have been setting carbs in that way for 35 years works every time hope this helps and I agree nice tractor
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