3-17SYNCHRONIZING THE CARBURETORS CHKADJ3. Remove: hose 14. Install: vacuum gauge attachments(into the bolt holes) vacuum gauge 1(onto the vacuum gauge attachments) engine tachometer 2(onto the ignition coil of cylinder #1)Vacuum gauge90890-03094Vacuum gauge attachment90890-03060Engine tachometer90793-800095. Start the engine and let it warm up for severalminutes.6. Measure: engine idling speedOut of specification Adjust.Refer to “ADJUSTING THE ENGINE ID-LING SPEED”.Engine idling speed1,250 1,350 r/min7. Adjust: carburetor synchronizationa. Synchronize carburetor #1 to carburetor #2by turning the synchronizing screw 1 in ei-ther direction until both gauges read thesame.
