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Float Level

Invert air horn with gasket in place and measure distance between top of each float and air horn gasket (see Fig 1). Distance should be as indicated in specifications. To adjust bend float tang containing needle valve. Align both floats and ensure that they are centered in gasket cutout. Recheck float level if adjustment is required.

Fig 1: Float Level Adjustment
G09325168Courtesy of GENERAL MOTORS COMPANY