Amal Concentric Carburetor Overhaul

Reader Contribution by Mc Staff
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There’s an old saying that 99 percent of all carburetor problems are electrical. True as that may seem sometimes, the simple fact is, if your Amal carburetted British motorcycle isn’t running as well as it should, a quick checkup and rebuild of the Amal Concentric carburetors might be just what the doctor ordered to get you back to running well.

Poor idling, uneven acceleration and misfiring can all be symptoms of a dirty carburetor or carburetors. Thankfully, Amal Concentrics — standard fitment on just about every classic British motorcycle built from 1966 to the late 1970s — are very simple devices. And that means cleaning them is easy if you use a little care. Depending on your bike, you’ll have from one to three of them to clean, so the time involved can range from as little as a few hours to all day, with removal and installation often taking the longest part. That’s particularly true with BSA and Triumph triples, where the gantry assembly used to synchronize all three carbs complicates the process.

Motorcycle Classics Magazine
Motorcycle Classics Magazine
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