Mazda 1983 RX7 Spezifikationen PDF herunterladen (Seite 125)

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CARBURETOR - NIKKI 4-BBL

Article Text

1983 Mazda RX7

For www.iluvmyrx7.com

Sunday, August 26, 2001 05:52PM

ARTICLE BEGINNING

1983 Nikki Carburetors

NIKKI 4-BARREL

Mazda RX7

DESCRIPTION

Carburetor is of 4-barrel, 2-stage design. Primary stage

includes idle system, slow speed circuit, accelerator pump system and

main metering system. In addition, Federal models are equipped with a

sub-zero starting device which admits fluid into the primary stage.

Secondary stage contains secondary vacuum diaphragm

operating system, stepping circuit and main metering system. Choking

is accomplished through a semi-automatic choke. Other features

include a deceleration control system, automatic choke return, hot

start assist, idle compensation and dashpot (manual transmission).

ADJUSTMENTS

NOTE: For all on-vehicle adjustments not covered in this article,

see the appropriate TUNE-UP SERVICE PROCEDURES article.

FLOAT LEVEL

1) Before assembling air horn to main body, adjust float

level. Invert air horn and allow float to hang by its own weight.

2) Measure clearance between float and air horn gasket. See

Fig. 1. Clearance should be .61-.65" (15.5-16.5 mm). If not within

specifications, bend float seat to adjust.

Fig. 1: Float Level Adjustment

FLOAT DROP

Turn air horn upright and allow float to hang by its own

weight. Measure distance between bottom of float and air horn gasket.

See Fig. 2. Distance should be 1.98-2.02" (50.5-51.5 mm). If not,

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