11 w 1 1 1 1 i I i 7 dub I G sJ f y tightly against seats or damage to needle seat will result 2 Throttle Rod Connections a Right Carburetor Connect throttle rod to carburetor cross shaft lever using retainer clip b Left Carburetor Rotate carburetor cross shaft with accelerator rod fig 9 11 to ensure positive closing of the right carburetor throttle valve Adjust throttle rod length in swivel until rod freely enters hole on carburetor cross shaft lever and secure rod with retainer clip NOTE The carburetors are now mechanically matched Any further curb idle speed screw adjustment or idle mixture must be duplicated on both carburetors 3 Preliminary Curb Idle Speed and Mixture Adjustment a Start engine and normalize b Check timing c Connect vacuum gauge to adapter fig 9 11 on vacuum balance tube Remove transmission vacuum line on automatic transmission and cap on synchromesh from balance tube adapter d Connect tachometer to engine e Adjust curb idle speed duplicate adjustment on both carburetors to attain approximately 500 rpm automatic transmission in drive and synchromesh in neutral hand brake applied Adjust idle mixture screws fig 9 12 on both carburetors to obtain peak steady vacuum at given idle speed f Remove vacuum gauge and close adapter as required for given transmission model 4 Carburetor Balance Vacuum Checkat 1200 RPM a Remove distributor vacuum advance hose from right hand carburetor and plastic cap from left hand carburetor spark port adapter tubes fig 9 13 b Connect vacuum gauge to adapter tube of each carburetor best results will be obtained using 2 equally calibrated gauges c Move accelerator rod fig 9 11 to obtain 1200 rpm all transmissions in neutral d Vacuum Check Check vacuum readings at each carburetor and note difference If vacuum difference is one inch or less the carburetors are satisfactorily synchronized If difference is more than one inch return engine to idle and adjust left carburetor throttle rod one turn up to increase left carburetor vacuum and down to decrease and recheck carburetor vacuum difference at 1200 cnov io swna uAuum