Re: 76 CB360, the Pig, Building stock 745B's top to bottom
Assembling the butterflies, make sure you got the four correct screws for this.
The screws have divits on the threaded end. These are peened at the factory so they cant fall out and get sucked into engine.
Check and add a few drops of oil to the butterfly shaft felt seals, inboard and outboard in the carb bodies.
Looking closely you can see the butterfly valve plates have a beveled edge. These must be installed correctly.
just for the pic I installed this one backwards and its easy to see the fit is wrong.
slip fit everything together. Leave the 4 butterfly screws loose for now. So the plates can be adjusted for center.
add a drop of oil to linkage
The little socket for the linkage looks like a screw but its not threaded and is has a smooth socket divot in the head.
The two flat washers on the sync adjuster fit on either side of "fork". One under screw head, the other under spring.
Also, Guardian Angel/Mentor, crazyPJ, texted to remind me to include this spring. As it seems to have been included on some carbs. But, maybe not on all carbs. THANKS PJ!!! 8)
The spring fits twixed the butterfly shafts. Keeping pressure on the nylon flat washers, snug against the felt bushings. Preventing air leaks plus helping to keep felts clean.
Also, check to ensure the outboard butterfly shaft plugs are installed. As they tend to pop out and get lost. They too prevent air leaks and debris.
In the event you find your carbs no longer have these plugs fitted. crazyPJ makes and sells nice ones.
Assemble the carbs w the mounting plate.
Now you can work the butterflies w the linkage and twist/adj plates make sure the plates fit the throats perfectly centered.
No binding or scraping. I shine a flashlight through from the choke side to ensure they are even and right.
Now they are ready to be bench synced. I just eyeball them. Make sure they open and close exactly the same.
Dont worry and spend a bunch of time on bench sync. as they might be close but they wont be right until you put vac gauges on.
Now adjust the choke plates and make sure the flappers are working smooth. Then a drop of oil on the shafts.
I add drop of oil to the o-rings on the float seats to help install easier. They fit tight I tap em in w a small plastic screwdriver handle and hammer.
Little wishbone springs need to be installed correctly. The tips will apply pressure the the float seats to keep them in place. If the springs are installed upside down. The float seats could drop down affecting float heights.
The air correctors are easy to fit incorrectly as they are all the same threads. They are stamped for size.
These are not removable on 754A carbs.
Make sure all the holes are clear and clean in the nozzels and jets.
I doubt it makes a difference but I like to line up the Main nozzle pilot feed hole w the hole in the body.
Make sure the needle guides are installed right side up, The smaller id fits against the nozzle.
before installing the Main Secondary nozzle.