The joy of old tractors

wcroom

Member
Mowing pastures today and it"s HOT here in NC! Drnking water like a good boy should.

My old 404 is running like a three legged dog today. Have the choke pulled all the way out just to keep it running, and even that's not enough sometimes. Tapping in the general area of the float valve smoothes it out for a little while until I hit a good bump. Came inside to cool off and let the tractor cool down before I pull the carb for a gentle cleaning. Talk sweet to it some, then marvel as how smoothe it runs when I put it back on.
Part of the joy that comes from these old machines we have is working on them. Maybe not having to work on them when they need to be doing other things, but being that they are simple enough that we can repair them without a degree in engineering.

That being said : Why does my throttle creep down slowly when I let go of it? Is that normal and I should have to mow with my hand on the throttle, or is there something I can tighten?

I ain't no engineer.
 
it may have a friction disc that needs to be snugged up a bit , enough to hold it. just like the massey's have on their throttle's. its a suggestion as i am not familiar how the 404 is set up.
 
If it has been setting for a while your experience is not unusual. Our 200 would sit for the end of corn harvest until spring plowing was finished or about 5 months. It had a Carter carburetor and was a pain to run until about two or three tanks of fresh gasoline had been burned through. When it starts giving trouble try removing the drain plug in the carburetor and blowing out the fuel line being sure to clean the bowl. I have seen it take two or three such cleanings to get the carburetor working just right.
 
Thanks guys. Pulled the carb and did a halfhearted cleaning. Put it back on and it was just as bad. Really ddn't get that bad until I was back down the pasture. Gonna pull it back off and look in the little holes. Found a grain of sand in my old Super A a few years back that was killing things. One grain of sand.


One of those days.
 
for proper carb cleaning it should be soaked in carb cleaner. then washed in cool water and all passages blown out with air. when blowing it out you can see the moisture come out of the passages, as a check to make sure they are not plugged. without using compressed air your pretty much hooped.
 
Don't overlook that you might have an ignition problem.

Several years ago, I was baffled for a long time by an engine that would run good for about 45 minutes from cold start and then start to lay down. Finally replaced the condenser and that solved the problem. The condenser worked okay until it got overheated.

More recently, I had the same symtoms on a different engine so from my previous experience I replaced the condenser. Again, that fixed the problem.
 
Man, the only compressed air I have comes out of my mouth and ends up blowing gasoline into my eye!
 
How long has the gas in the tank been sitting in it? I had a similar problem with my super c a few weeks ago.... Hadn't been paying attention to the fuel bowl and it was nearly completely full of water. Dumped it and the carb bowl out and it ran perfect again.
 

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