Pour a few ounces of gasoline into the tube (remove it from the engine first!) toss it out onto a gravel driveway, and light a match. After it burns for several minutes, knock the ashes out of it, clean, repaint, and reinstall. You'll be good to go for another 20 years or so.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!