Carter Carb on 100 woes

If I remembr correctly, Pa-In-Law took this Carter off the 200 because it didn"t run "right".

With my Zenith carb developing problems, I cleaned the Carter well, took out every jet, sprayed cleaner in every passasge & blew air through every passage, then put it on.

At mid-point on the throttle quadrant, motor seems to be running at about 1/3rd rpm (not idling). At one notch below that midpoint, it dies quickly - no sputtering, just rrrrrrrrrstop.

At full open on quadrant, engine seems to be about 3/4 wide open.

I'm having problems with the Carter carb on my 100 also. The tractor starts OK but runs rough. I hope someone has a solution to our problems.

I had a carb on an allis B that acted like that and the problem was that the throttle linkage was out of adjustment. I had to loosenthe lever from the rod and slide the rod about 3/4 inch forward and retighten and it worked much better. I don't know if that is what is happening to you.
Zach

I suggest you concentrate on getting the Zenith working correctly as parts are available for it and you won't be able to find everything most likely for the Carter UT which you probably have. I have never been happier since I threw the original Carter away and put on a new Zenith on my Super C as my carb problems are a thing of the past, Hal.

FarmallHal, thanks for the advice, not a "fix", but GOOD advice, still.

I chopped yesterday for about 1 1/2 hours with the Carter on, and it ran fine, no soot or smoke, just wont idle.

The Zenith ran fine for better part of a year, and then I noticed hard to start, exterior always damp with gas, and inside of muffler and at any exhaust leak everything is INCREASINGLY sooty and getting worse.

I can live with the Carter for now till I get time to clean the Zenith.

Is the linkage from the gov set according to specks and does the input shaft have a lot of slop those two things can make a huge difference in throttle response. I would check them first.

(quoted from post at 12:01:05 11/24/10) FarmallHal, thanks for the advice, not a "fix", but GOOD advice, still.

I chopped yesterday for about 1 1/2 hours with the Carter on, and it ran fine, no soot or smoke, just wont idle.

The Zenith ran fine for better part of a year, and then I noticed hard to start, exterior always damp with gas, and inside of muffler and at any exhaust leak everything is INCREASINGLY sooty and getting worse.

I can live with the Carter for now till I get time to clean the Zenith.

Click to expand...

The Zenith might need a new float, but most likelt it just needs the float valve and seat cleaned up and put right back in. Probably need a new gasket also as the gasket will most likely not come off without destroying it. Maybe a 20 minute job for experienced folks, maybe an hour for inexperienced.

Is your dist up to snuff. Had a sevice call said it runs rough and so forth. I took the timing lite and went from one plug wire to the next found out two of them werent firing all the time. A rebuilt dist solved the problem.

Back when I was fighting carb problems one of my issues turned out to involve the air cleaner. My tractor had a mix of United Specialties and Donaldson air cleaner components mainly the cup on the bottom didn't match with the rest of the unit. The United Specialties unit as I recall has a shallower cup along with an oil baffle (which wasn't on my Super C) between the cup and the cannister portion of the air cleaner. The Donaldson doesn't have a baffle and the cup is deeper so the fill line is farther below the filter part of the cleaner. I just found a complete Donaldson unit with all the right components as noted in my part catalog and all the sooty stuff went away. Unit then I was changing and cleaning spark plugs every few hours depending on how it was used and there was the ever present black smoke until I fixed that part of the problem. Even after fixing the air cleaner problem the Carter carb continued to cause running and idle problems and in general was a royal pain to work with. Four or five carb rebuilds later (most by very skilled folks) led me to the NOS Zenith I bought and installed. Life has been good again, Hal.