I just picked up a 00 scrambler 500 4x4 from my uncle. It starts and idles fine (although the idle seems pretty low to me) but anything off idle it bogs really bad. There's a fuel drip from the drain tube. I put a new plug in it and the old plug was covered in soot which I kinda figured it was going to be just from how rich the exhaust smells. I read the sticky and this seems to cover my symptoms pretty well.
My question then is should I try just cleaning the carb first or go ahead and order a rebuild kit? I have a buddy that knows way more about carbs than I do that's supposed to come over in the next day or two and give me a hand with it. I'm itching to get it up and running so I'm wondering if I should just order the rebuild and have it here? Is one rebuild kit better or more complete than another? Believe I read to stay away from ebay kits which I can see but what about others?Fuel over flowing from the bowl - this is caused by a bad float needle or varnish/dirt preventing the float needle from seating, or the float is out of adjustment.
symptoms - worst case is fuel continually flowing from the carb into your engine or airbox or out the overflow. This can also be show up as a very rich running engine, or slow drip from overflow when engine is running. The engine will stumble and stall, running rich and choking itself out. Spark plug will be coated with black soot.
Fix - see carb cleaning, additionally, check the adjustment of the float arm to make sure it is perfectly parallel to the bowl gasket seat. If not you need to bend the little brass tang on the float arm until it is resting parallel when the carb is held upside down.
prevent - install inline fuel filter and always store machine with a full tank of gas. Stabil can help but will not totally prevent the issue.