How to adjust typical diaphragm carburetors On most Zama carburetors to help fi nd the correct adjustment there is a small L beside the Idle mixture screw and H beside the High speed mixture adjustme

Normal adjustment for 2 needle carburetors begins with the L needle This adjustment controls the fuel flow to the low speed or idle circuit If the carburetor is too far out of adjustment to run or has been dis ssembled start with turning the L and H

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