Speaking from 60-something years of rebuilding carburetors, I've come to believe that very few people spend enough time cleaning a carburetor before reassembling it. A carburetor is really a pretty simple device- - -just a casting with a bunch of precision-drilled holes, so unless it's been on the business end of a sledgehammer, there's not a great deal to go wrong with it. The trick is to get those holes CLEAN! At one time, there were chemicals available that could soften the deposits, and high pressure air could then be used to dislodge them. Nor so these days! The environmental wackos have outlawed anything that has much of a chance of doing an effective job of cleaning a carburetor. Jon (Carb King), our resident carburetor guru has come up with an alternative- - - - -boiling water and dishwashing detergent. Dismantle the carb, boil the parts in a strong detergent solution for a while, and follow up with a rinse in clean boiling water. Then use a needle-point air nozzle and blow an outrageous volume of air through every hole to clear out the deposits the detergent softened up. Reassemble the carb and make all the assembly adjustments needed to put it back into as close as possible to "new" condition. The above process should put around 90% of the carbs you encounter back into acceptable running shape, certainly better than some offshore piece of junk. Good luck!
Jerry
