Honda VT750DC ACE Service Interval And Recommended Maintenance Manual page 48

Honda VT750DC ACE
48
Connect a suitable tube between the tank and the fuel
inlet line. Turn fuel valve on and start engine. Adjust the
idle speed to 1,000 +/- 100 rpm.
Check the difference in vacuum between each
carburetor.
Note: The base carburetor is the REAR carb. (No.1)
Carburetor Vacuum Difference:
27 kpa (20 mm Hg 0.7 in Hg)
Synch the carbs by turn the adjusting screw located
between the two carbs and accessible through the hole
provided in the frame.
Be sure that synchronization is stable by snapping the
throttle several times and re-checking idle speed and
vacuum difference. You might have to re-adjust idle and
synch several times to find the proper "balance".
When everything seems stable and adjusted, stop
engine and disconnect the vacuum gauge and adapters.
Install the vacuum plugs and washers and tighten to 3
N-m (2.2 lbf-ft) of torque.
Install the rear cylinder head left-side fin, the air
cleaner housing and the gas tank.
Service Interval and Recommended Maintenance Manual