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maxwell99 01-27-2013 13:16:21 208.66.240.8 Report to Moderator	Mike, I have a similar problem with my 1957 to - 35 gas. I do believe we are better off that after a short warmup period the tractors run smooth. Rather have our problem than one that will not run and pull strong while at work. We must remember these tractor fuel systems are near 56 years old. All I can tell you is insure you have the electrical system in excellant condition. Run non-ethonal fuel, install a in - line fuel filter. Tune the tractor so it will idle at 400 rpm, if the motor will not idle at 400 rpm 's you do not have it properly adjusted. When you have it properly tuned, put the disk on and take it out to some open area (engine warm) . When you put the load on the tractor and open the throttle the engine should take the fuel with no he -cups. Good luck [Reply]   [No Email]
mike paulson 01-27-2013 13:37:54 98.15.190.141 Report to Moderator	Re: 50 runs rough till warm.. in reply to maxwell99, 01-27-2013 13:16:21   yea once warmed it will idle at 400rpm no problem. i did go threw all throttle adjustments pretty extensively. have the carb adjusted also. and everythign on the tractor is new, all ignition parts, tune up etc. i have heard of putting a heat gun and warming the intake or even putting a light bulb on the intake. im really thinking its just ice cold air being delivered to the engine before it warms? it was 5degrees the last couple mornings. [Reply]  [No Email]