Posted by Nate V. IA on August 16, 2014 at 15:55:55 from (216.51.200.109):
I have had this annoying issue with this tractor for 4 years, I have never looked into it until now. 706 gas, mainly used for loader work. I have never really worked it hard, about 800 hrs on a rebuild.
If I give it too much throttle at once the engine will stumble and sometimes die. By to much throttle I mean if I don't bump the lever with my hand 1/4 of an inch at a time it will stumble. Seems to do it more when cold, but it never goes away even if I work it for extended periods of time. It will also stumble when I let out the clutch to fast in H3 or H4. I almost never use these two gears anyway way to fast for loader work but now I am driving on the road more. My 450 takes off from a stopped position in road gear better than the 706 does in H3 low TA. Other than this problem there don't appear to be any other issues, seems to have plenty of power and the governor works fine as far as I can tell.
Put a new coil, wires, plugs, points and dist. cap on this spring and the problem persists. I did all of this because the wires had massive amounts of corrosion on the ends and ruined the cap and coil, causing a no start situation. I have plenty of fuel getting to the carb.
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