Float Level

Before assembling air horn to main body, adjust float level. Invert air horn on stand and allow float to drop by its own weight. Measure clearance between float and air horn gasket. See Fig 1. Clearance should be 0.61 - 0.65" (15.5-16.5 mm). If not within specifications, bend float seat lip as necessary.

Fig 1: Float Level Adjustment

Courtesy of MAZDA MOTORS CORP.