I need some help with my M and I knew this would be the place to ask. My tractor has always started the first time it turned over, almost regardless of the weather. I recently pulled the governor off because of a suspected problem, and after I put the governor back on, it cranked for a long time before it started. On top of this, I knew from the last time I had it out, that the valves needed adjusted. Last night, I pulled the valve cover and the spark plugs so I could easily rotate the crank for the adjustments. The spark plugs were wet and black like the tractor was running rich. Anyway, after I made my valve adjustments,I tried to start the tractor. It turned over, and over and didn't want to start. Finally it started with a puff of black smoke. I let it warm up, and shut it off. After about 30 minutes, I tried to start it again, and once again, it turned over and over and finally started with the puff of black smoke like before. It appears that messing with the governor started this whole thing. Any ideas?
- Thread starter TC2
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rustyfarmall
Well-known Member
No, the governor being removed and reinstalled has nothing to do with the problem. It is time to give some attention to the carburetor. Replace the needle valve and seat, or at least give it a good cleaning, and inspect the float for pinholes. A float that does not float will cause the problems you describe. Also set the float height at 1 5/16"
It is just such a coincidence that this started as soon as I put the governor back on. I had never had any carb issues before. As a matter of fact,after the tractor sat all winter, I hit the starter and it fired right up. Also has me doubting my valve adjustments, since it appeared to be even harder to start after I set them, but I would guess that the valves would have to be way out to keep it from starting. I am not doubting your advice, I am just trying to eliminate everything else.
rustyfarmall
Well-known Member
The puff of black smoke can be attributed to only the carburetor. Yes, it is coincidence.
Janicholson
Well-known Member
A stuck float, or a piece (even the size of a hair) in the needle and seat controlled by the float will allow it to flood. That is the issue. Turning off the fuel at the tank is necessary on these to assure that they do not flood. Jim
But, why was the govenor taken off. When you put it back on you may not have the aligned the carb operating shaft tang properly. It will go on three different ways. Correct way, then below the tang in throttle shaft which would cause engine to run wild and the other way is over the top of throttle shaft and if it is that way the butterfly will not open properly when starting, will possibly sound normal when running but have no power what so ever as the max it can open is about one fourth. I have seen this happen so if you are taking carb off you will be right there to check and make sure you have linkage properly assembled.
I took it off to take it to a shop because I thought the weights seemed too loose. The result was that they were loose, but the mechanic in the shop said they weren't loose enough to worry about yet, especially given the price to fix them. I don't think the problem you mentioned is what's going on. I can get full throttle and power is not an issue once I get it started. Thanks!
rustyfarmall
Well-known Member
Correct. I believe you DID get the governor to carburetor connection correct.
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