Posted by Kentb of SWMO on November 15, 2011 at 07:25:11 from (98.23.175.163):
In Reply to: small engine surging posted by Zachary Hoyt on November 15, 2011 at 07:09:04:
Lean idle mixture. First what grade fuel are you using? If 87 try 89. If you have a idle mixture adjustment try that BUT if you have the later fixed jet carb, you need to do a little super tuning. I worked on a very late production verticle shaft engine Both jet fixed. It was running lean on both sides. I had to drill out both the idle and high speed jets. If ti is the older carb with a adjustment and the adjustment does not work, likely you idle mixture passage is plugged. Tecumseh carbs do not like water. Even condensation is enough moisture to plug their idle mixture passage.
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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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