Topic: Another rookie question

[m goodwin]

Things were moving along fairly well..  tank treated, petcock rebuilt, filters changed, connections cleaned, battery replaced with most everything lighting up so I figured it was time to tackle the carbs and clean out the varnish, crud, whatever else i find in there..

I'm already stuck at just getting them off the bike..  Has to be a better way than detaching from the manifolds, disconnecting the throttle cables and removing the entire assembly..  I been screwing around with this thing for over an hour and can't seem to come up with the right approach...  Any help is appreciated... 

[DRam]

The best was to remove your carbs is to detach them from the manifolds, disconnect the throttle cables, disconnect the air cleaner, and take them off.  I've only worked on a '79CB650, but imagine the 750's are much the same.  If you don't have a manual for your bike you should get one.  It will have fairly detailed instructions for removal / installation.  If I am wrong there will be many who will give you the straight skinny.

[m goodwin]

Thanks dram,  think im done for the night but will try again tommorrow.

[mrblasty]

 I just removed the carbs on my 750 I think they have been on the bike for 5 or 6 years without being removed.
After removing the air box and throttle cables and loosening the bands on the rubber tubes (on the engine side of the mounting plate)
I gave the rubber tubes a shot of WD40 at the gap between the carb the tube and and let them sit for a few minutes.
For me it was easier to straddle the bike with the tank off, grab the whole carb assembly and rock it up and down several times and they popped right off be ready though, when they come off there is good chance of whacking them into the frame or transmission case. 

[Bob Wessner]

I just removed the carbs on my 750 I think they have been on the bike for 5 or 6 years without being removed.
After removing the air box and throttle cables and loosening the bands on the rubber tubes (on the engine side of the mounting plate)
I gave the rubber tubes a shot of WD40 at the gap between the carb the tube and and let them sit for a few minutes.
For me it was easier to straddle the bike with the tank off, grab the whole carb assembly and rock it up and down several times and they popped right off be ready though, when they come off there is good chance of whacking them into the frame or transmission case.

Precisely the order and routine I use, an unfortunately, have had to do it far too many times, but it seems to be the best I've come up with. Just remember there is a proper alignment to both sets of rubbers, both airbox and engine side, when you go to remount.

[jgary]

To follow up on Bob's comment, I'd recommend marking the alignment of the carbs and rubber boots before taking them off.  Highly recommend it.

John.

[Gordon]

I made this list for another thread about cleaning carbs, maybe it will be of some help:

There are small differences between each type of bike, but here's a quick rundown of how I work on my carbs. (750K1)


Shut off petcock, un-hook fuel lines and remove the tank.

Disconnect the throttle cables at the carb end.

Drain the fuel from the float bowls.

Remove bottom half of airbox and filter, and loosen the hose clamps that connect the airbox to the carb intakes.

Pull the airbox off the carbs and remove it.

Loosen the hose clamps that connect the carbs to the engine intake.

Pull back on the carbs, alternating from left to right side to slowly rock them out of the rubber hoses (this should take a decent amount of effort)

Put the carbs on the work bench and remove the float bowls (some have screws, some have clips).

Tap out the hinge-pin (small screwdriver or center-punch) that holds the float in place and remove the floats and float valves.

Remove main jet and emulsion tube that sits above main jet and up inside the carb surrounding the jet needle.

Remove idle/slow jet.

Remove any o-rings and soak all jets in parts cleaner.

Spray carb cleaner in any hole you can find in the carbs and let it soak.

Spray compressed air through any hole you can find and through all the jets.

Make sure every single hole in the jets is clear.

Repeat the last four steps, and again.

Put everything back together and adjust float level as per the manual (you do have a manual, don't you?).

Carb installation is the reverse of removal.  You can heat up the rubber parts with a hair dryer to make installation a little easier.


Also, read through Old Man Honda's page on carb work.  Very detailed and shows you what the individual parts look like.
http://oldmanhonda.com/MC/Rcarbs.html

[dusterdude]

follow gordons steps then repeat after you find out you didnt get em clean enough the first time.

[Bob Wessner]

follow gordons steps then repeat after you find out you didnt get em clean enough the first time.

I bet Dusterdude thinks I'm going to come back with something like, "Yup, right on," "Been there, done that, many times," or something equally clever like that, but I'm not. 

[bryanj]

Only one way i know of STRUGGLE

[dusterdude]

damn bob,you done ruined my day and i know you been there done that so no comment is neccesary.

[m goodwin]

thanks guys i have them off and have mostly disassembled....  I do have a manual but may purchase another with more detail...  actually i'm surprised at my progress so far considering i'm primarily an office jockey these days

[DRam]

Cool.  Another one gives in to the dark side and becomes a midnight mechanic.  Be warned though.  Working on your bike is addictive.  You'll find yourself at all hours of the night taking parts off, cleaning, adjusting . . .  you'll lose your job, you'll spend the grocery money on specially built chromed and polished doo-hickeys for the bike, your wife and kids will leave you and finally you'll join BRA (Bike Restorers Anonymous) which will provide for you a buddy to call when you get the urge to work on your bike.  You call him and the two of you will do something constructive like spending the night bowling and drinking instead of working on your bike.  Recovery is slow and painful.  You have been warned.

[mrblasty]

A word about these carbs. Simple
The first time I took them apart was just the other night, The actual carb tear down takes about a minute each, the soaking part takes the longest.

[m goodwin]

Thanks for the advice dram as i have been having a few thoughts about setting up a cot in the basement next to my workshop.  No problem though if the dark side takes over i can resurrect my old bowling ball as well...  Of course the beer drinking doesn't need resurrection...

Blasty...  I agree the carbs are like anything else...  disassembly makes quick work....  it's the reverse order that requires sobriety..

[DRam]

Does that mean one should do the drinking prior to taking apart and then stop drinking when disassembling in order to be sober when reassembling?