Posted by CNKS on February 09, 2011 at 07:10:15 from (216.144.104.128):
In Reply to: Super M carburetor posted by leeedwin9 on February 08, 2011 at 21:27:30:
Main difference other than the choke rod is that the main jet on the M carb is adjusted by turning the screw in until it stumbles, out until smooth. There are probably other internal differences, I have not checked, someone else can answer that. On SH and SM-up carbs the main jet adjustment is 5 turns out for max power, turned in about 0.5-2 turns for lighter loads. The carb on my 460 and Super H work best at 5 turns out.
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Today's Featured Article - Tuning-Up Your Tractor: Plugs & Compression Testing - by Curtis Von Fange. The engine seems to run rough. In the exhaust you can hear an occasion 'poofing' sound like somethings not firing on all cylinders. Under loaded conditions the tractor seems to lack power and it belches black smoke out of the exhaust. For some reason it just doesn't want to start up without cranking and cranking the starter. All these conditions can be signals that your unit is in need of a tune up. Ok, so what is involved in a tune up? You say, swap plugs and file the points....now tha
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