Syncing the carbs is the last thing.
Syncing the carbs is adjusting the height of the slides and that controls the idle speed of each carb.
The accelerator pump rod is not really adjustable like the book says.
Leave it alone. The book is wrong.
Leave the fast idle cam alone. No one ever messes with it.
Synchronize LAST Adjust pilot screws all the exact same number of turns.
Set idle speed to about 1000 rpm. When syncing
Make sure the accelerator pump and nozzles work correctly.
When the carbs are off of the bike remove all 4 mixture screws and make sure that all 4 "o" rings are in good condition and not mangled.
Put them back together with spring and washer .
O ring first ,then washer,then spring.
Make sure you do not throw away the fuel hoses between the accelerator pump nozzles on the carbs because they have brass restrictors inside the hose .
I kinda disagree with Lucky....but I also agree.???
Baseline all your adjustments according to the FSM. Put them on the bike and sync them. They run so bad when they're outta sync I wouldn't even attempt to fine tune the idle mixture screws.
Just my $0.02 .
A free people ought not only be armed and disciplined, but they should have sufficient arms and ammunition to maintain a status of independence from any who might attempt to abuse them, which would include their own government.~George Washington
Yes I understand, but really the most important thing is that they are all the same.
You can do lean highest idle but it really just is a waste of time. Especially if the slides are off.
And they only have to be off by.007 thousandths to make a difference.
Then you will not know if it is lean because of the slides or the mixture screws. a mess.
Set the mixture screws and then just worry about the slide height, but moving both adjustment makes a mess.
IF it is a stock bike and the book says 1 turn open you can play around with it all you want
But unless you have a better tach that the one on the bike you are just wasting time.
Sears sells a Dwell Tachometer that will help. About $40.00
But it is still fiddling around with adjustments of the mixture screw of 1/16 of a turn or less . Silly.
Just set them all to 1 full turn or what the book says and leave them alone.
IF there is popping on decell of the engine when revved up in the shop, then you will need to richen those mixture screws. Try 1-1/4 turns but just set them all exactly the same. No popping.
Sounds like a good deal on that shop tach, I'll get that. I've got all the pilot screws set 1 3/4 turns out per the FSM so I'll just leave them there. All carbs are bench sync'ed as close as I can get them. I just have to get a set of vacuum guages, clean the tank, replace hoses, etc and start it up. Thx!