Posted by CNKS on October 21, 2008 at 05:15:16 from (216.144.104.128):
In Reply to: Re: Fouled plugs posted by RustyFarmall on October 20, 2008 at 18:56:53:
Super H and standard M carbs have the same main jet and screw. I don't have SM manual and am too lazy to check numbers on the CaseIH site. Perhaps IH did this on the Super series for a richer mixture for more power. If I really used my SH, I would adjust it leaner as long as it pulled the load. I initially adjusted the carb on my SH to the so called "sweet spot" as Andy said. It did not have any power. I then read the manual, where the 5 turns out thing is. I have not fiddled with it. I am sure it will run 4 turns out, don't think it will run with 3. Perhaps I should turn my M main fuel screw 5 turns out and see if it will run. Or maybe there is some other differece in the carbs. All I know is what it says in the Operator's manual. I believe that statement is in every manual (Super H-Super M, up), until the 706/806? when IH began using a solenoid. I have not checked every part.
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