ROCHESTER CARBURETORS

Bulletin 9D-7 August, 1951

Bulletin 9D-7 Model "BB" August, 1951 Page 14
ROCHESTER PRODUCTS, DIVISION OF GENERAL MOTORS, ROCHESTER, NEW YORK
16.   Install washers and cotter pins.
17.   Place choke housing gasket in position and place choke housing on suction tube and install choke housing on air horn bushing. Tighten screws evenly and securely. NOTE: Be certain packing is on suction tube.
18.   Tighten choke suction tube nut to choke housing. Fitting must be tight to pre­vent loss of vacuum.
19.   Assemble choke piston to shaft with pin and place into choke housing bore. Rotate choke shaft clockwise so that piston rides in piston housing cavity.
20.   Install choke valve on choke shaft. Cen­ter choke valve before tightening screws. Letters RP must face outward.
21.   Place baffle plate in position, and install choke coil, cover, and gasket. Rotate cover until index marks on cover and housing are aligned. Attach three re­tainers and screws to choke housing and tighten securely.
22.   Place choke counter weight on end of choke shaft. Letters RP must face out­ward. Install spacing washer and trip lever so that tang of trip lever is on top of counter weight tang, when choke valve is full open,
23.   Install choke rod, with offset end to counterweight and other end to the fast idle cam. Assemble cotter pins to each end of rod. Turn ends over to prevent binding or interference. (Figure 14.)
NOTE: Check choke valve for free movement.
24.   Install pump rod into rocker arm and fasten with clip. Then install lower end into throttle lever and fasten with cotter pin.
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Counterweight
Trip Lever
i.
Figure 14
Set Index Pointer 2 Marks Leon
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Figure 15

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