Float Level

Remove air horn, solenoid plunger, air horn gasket and metering rods. Remove plastic float bowl insert. If solenoid lean mixture screw requires removal, use Mixture Control Adjuster (J-28696 or BT-7928). Count and record number of turns required to lightly seat lean mixture screw prior to removal.
Install Bracket (J-34817-1 or BT-8227A-1) on float bowl. See Fig 1 . Install Float Positioner (J-34817-3 or BT-8227-A) on float bowl with pin contacting outer edge of float lever.
Using "T" Scale (J-9789-90 or BT-8037), measure distance from top of casting to top of float, approximately 3/16" from large end of float. Float level must be within 2/32" of float level specification. See FLOAT LEVEL SPECIFICATIONS table.
If float level requires adjustment, use Float Adjuster (J-34817-15 or BT-8233) to bend float lever for correct setting. Recheck float level after each adjustment. Ensure float alignment is straight and does not contact float bowl.
Lightly seat lean mixture screw and readjust to original location (if removed). Reverse removal procedure for remaining components. Tighten air horn in correct sequence. See Figure .

FLOAT LEVEL SPECIFICATIONS

Fig 1: Adjusting Float Level

Courtesy of GENERAL MOTORS CORP.