Personally I would get a rebuild kit (mostly fairly cheap - just did a Kohler for $12 bucks), install in the carb, Dump all your old fuel and replace with new fuel with stabilizer in it. I also install an inline fuel filter (about $3) and a shut off on my fuel line under the tank. When you are done splitting, turn the fuel off and let it run itself dry. I been doing this for years on my small engines and never have any problems, even on my generator that sits for months/sometimes a year without being run.