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Adjust as if the bike is two singles, at first, then balance them against one another.
Adjust after the bike is thoroughly warm.
Aim a couple of fans on the bike to keep it cool and to keep from bluing the pipes.
Make sure the choke slides are all the way up.
Start with fresh plugs and make sure the timing is right on.
Make sure the valves are adjusted correctly.
Make sure there are no air leaks and that the balance tube connects the two inlet adapters.
With the bike idling, listen to the carb body to see if you can hear the slide rattling. Use a piece of hose as a stethescope.
Make sure that the cables have enough slack in them and after balancing the carbs at idle, adjust them to lift the slides evenly.
With the bike warm, adjust the mixture speed screws one at a time until you get the highest idle, and then turn them in just a very little bit, about 10 degrees, so that it's slightly rich.
With the bike running, run in the idle speed screw on the right side until the bike idles at about 3K. Pull the left plug wire. Adjust the idle speed with the right idle speed screw to get it to 2000.
Put the plug wire back on the left side and pull the right side cap. Adjust the speed of the left side to 2000. Put the left plug cap back on and then drop the idle speed equally on both sides until you get it to about 900 rpm, or the lowest steady idle. You will be close. A vacuum guage on the balance tubes, hooked to a Y fitting and a small forceps or visegrip to isolate one side at a time will get it right on. Or splurge on two vacuum gauges. Or a simple U tube half full of water with a little dye in it with each end hooked to the balance tubes, but you need restrictors in the hoses to damp the pulses (plugs with a little hole in them.)
[ This message was edited by: Mecchanica on 2007-06-04 15:05 ]
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Triumph old, Triumph new, any Triumph will do.
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