Choke Diaphragm Run Position For Cold Engine

Choke Diaphragm Run Position For Cold Engine:

1. Apply vacuum to choke diaphragm cover, or depress choke diaphragm rod to seated position.
2. Rotate choke bimetal lever clockwise (CW) until choke shaft lever pin contacts fast idle intermediate lever. Dial should indicate the tag specification for Run at 0~F +/- 0.005 inch.
3. If an adjustment is required, remove the choke diaphragm cover and install a new cover with the original spring. This is necessary due to tamper-resistant material on the adjustment screw.
4. Adjust by rotating screw in diaphragm housing with 5/64 hex wrench, CW to increase or CCW to decrease height.
5. Apply sealing liquid on adjustment screw to secure adjustment.
6. Install lead ball plug in adjusting screw hole.