rpm Make adjustment by disconnecting rod at cross shaft end and rotating in swivel Repeat adjustment until difference is within one inch of vacuum NOTE It is preferable to have higher vacuum reading on right carburetor distributor advance side CAUTION When making linkage adjustments accelerate engine by moving accelerator rod r only fig 9 11 Do not open throttle by grasp ing other portions of linkage or this may upset geometry and synchronization e Remove vacuum gauge or gauges replace distributor advance hose on spark port adapter tube of right carburetor and plastic cap on left carburetor spark port adapter tube CHOKE MAIN CABLE HOUSING CLAMP 1 v F P a i VACUUM GAUi HOSE ON VAC SPARK PORT T ADJUSTING CHOKE VALVE Fig 9 14I r 5 Final Curb Idle Speed and Mixture Adjustment Check NOTE Always make final idle speed mixture adjustment with air cleaners installed a Replace air cleaners b Reconnect vacuum gauge to vacuum balance tube adapter c Read vacuum at idle speed of 500 rpm with synchromesh transmissions in Neutral or with Automatic transmissions in Drive with hand brake set If necessary adjust curb idle speed and mixture screws to highest steady vacuum reading between 14 18 inches CHOKE SLIDE a ADJUSTMENT f Y 1 L 3E UU M I SWIVEL x CHOKE CABLE SUPPORT EFT RIGHT Choke Linkage