CARBURETOR - NIKKI 4-BBL
Article Text (p. 2)
1983 Mazda RX7
For www.iluvmyrx7.com
Copyright © 1998 Mitchell Repair Information Company, LLC
Sunday, August 26, 2001 05:52PM
bend float stop to adjust.
Fig. 2: Float Drop Adjustment
CHOKE LINKAGE (FAST IDLE OPENING ANGLE)
Close choke valve fully and measure clearance between
primary throttle valve and wall of throttle bore. Set clearance to
.040-.047" (1.0-1.2 mm) by bending fast idle rod. See Fig. 3.
Fig. 3: Choke Linkage (Fast Idle Opening Angle)
Bend fast idle rod to adjust.
CHOKE VALVE OPENING ANGLE
NOTE: Choke diaphragm No. 1 is the dual diaphragm assembly, choke
diaphragm No. 2 is the single diaphragm assembly.
1) Disconnect both vacuum sensing tubes from No. 1 vacuum
diaphragms. Pull choke lever link out fully and hold in place. Apply
more than 19.7 in. Hg to inner diaphragm. See Fig. 4.
2) Clearance should be .22-.24" (5.5-6.2 mm). Apply more
than 19.7 in. Hg to both diaphragms and measure clearance again.
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