Dunno what model you're on about best bet here m8 is to get another carb, try www.usedkawasakiparts.com and tell them what model you have.Failing that have them ultra-sonic cleaned or vapour blasted but you do need to strip them right down yourself first. Then you can check the rest of the engine like ignition timing & valve clearances, its been standing a while, what are the bores like? etc etc
Chris P.Duck, November 2010