never worked on carbs before and i just tore down and rebuilt my set on a 71 cb500k. The bowls were pretty dirty, the bike had sat for 2+ years in a museum.
I didnt soak them, I used an ultrasonic tank, roughly 1hr each carb. fwiw, I would invest in a carb wire cleaner kit as well regardless of cleaning method as you really want to apply a little mechanical action to some of the passageways to clean off encrusted stuff.
Bought a Keyster kit off of Ebay, here is what I noticed. Kit had a needle .27 I think, original was .27909.... or something. The slow was 40 but it was a different size jet than I pulled out of the carbs, smaller body and tiny holes. Thread was the same and supplier asured me it will work.
Was unsure of the float bowl measurement, read the manual a bunch of times. fwiw, I couldnt get it to spec, but they all had the same measruement so I'll give it a go at that.
the 627 carbs have a bunch of washers and a spring on the main throttle rod/axle thingy, including a felt washer. Be sure to note the assembly order before you tear yours down as it is not detailed in the Honda manual and I couldnt find a replacement part number for it.
I have forgotten to lube the moving external assembly, should prob put something on the alumiun ball and sockets. I dont know if any internal parts were to be lubed...
polished the bowls and top cap. The main body I might try and brighten up as well but overall looks champion (might not run).
Have to clean out the tank before I even consider seeing if my work paid off. no sense in doing all that work and running rust through it. So will try the Klean Strip Prep & etch solution tomorrow.
