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Carb rebuild issues

  • Thread starter Thread starter mlymanz71
  • Start date Start date
M

mlymanz71

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Alright gents I am in a bit of a pickle....I am rebuilding the carbs on my 750 which has been running for several years reliably. I got a stage 3 kit from dynojet and having them soak in carbdip for at least 24 hours, got a new o-ring kit and here is where I run into the problem. Everything went fine initially have the new kits installed and then I carefully drill out the mixture plugs, works great, and the mixture screws are frozen solid on 2 carbs. :mad:

Has anyone encountered this problem and been able to break them loose? Any help on tips or tricks for getting them to loosen up would be great!
 
mlymanz71 said:
Alright gents I am in a bit of a pickle....I am rebuilding the carbs on my 750 which has been running for several years reliably. I got a stage 3 kit from dynojet and having them soak in carbdip for at least 24 hours, got a new o-ring kit and here is where I run into the problem. Everything went fine initially have the new kits installed and then I carefully drill out the mixture plugs, works great, and the mixture screws are frozen solid on 2 carbs. :mad:

Has anyone encountered this problem and been able to break them loose? Any help on tips or tricks for getting them to loosen up would be great!
Click to expand...
The mixture plugs should have been done first, then get the screws out, then proceed with dip, ect. If your having trouble with the screws some use heat and a proper fitting screwdriver. In the past I have let soak in PB Blaster for a day with sucess. Now that I have an ultrasonic cleaner I would try and let sonics bust it loose. Good Luck
 
nejeff said:
The mixture plugs should have been done first, then get the screws out, then proceed with dip, ect. If your having trouble with the screws some use heat and a proper fitting screwdriver. In the past I have let soak in PB Blaster for a day with sucess. Now that I have an ultrasonic cleaner I would try and let sonics bust it loose. Good Luck
Click to expand...


Yeah I realized I should have pulled them first but I guess I subconsciously like to learn the hard way! Now that is a great idea! I had not thought to use the ultra sonic cleaner! :D We have one for reloading downstairs, might have to give that a try. Anything I should be wary of when doing it that way?
 
mlymanz71 said:
Yeah I realized I should have pulled them first but I guess I subconsciously like to learn the hard way! Now that is a great idea! I had not thought to use the ultra sonic cleaner! :D We have one for reloading downstairs, might have to give that a try. Anything I should be wary of when doing it that way?
Click to expand...
I would use heated solution (if available) of water & simple green (or Dawn dish detergent). Suspend over from a hook or use the tray in the cleaner. You don't want the body touching the bottom directly, cuts down the effective action
 
As nejeff mentioned, heat, penetrating oil and a good-fitting screwdriver are good tools.

If that doesn't do the job, you may have to break out your Dremel tool with a large cut-off wheel so you can cut a slot down the tower and cut a fresh groove in the top of the screw for a better 'bite'.

When you are done, it will look like this: (both carbs have been 'slotted' for mixture screw removal)
IMG_4081.jpg


..
 
Wow well its good to know I am in some good company here in the land of stuck mixture screws ;) Going to try and work on it tonight and see what happens. If not then I know I will be all geared up to work on it tomorrow after seeing all the pretty bikes out at the bonneville salt flats :D

Thanks for the help guys I will give the ideas a run and let ya know how it works out!
 
Wow, my mixture screws have never been out in 32 years, they came out fine. Thank God lol.
 
mrbill5491 said:
Wow, my mixture screws have never been out in 32 years, they came out fine. Thank God lol.
Click to expand...

You are lucky! If things went the way they should I would be a little worried tho :)

Well I was a little more tired than expected after Bonneville yesterday so I will be digging into the carbs tonight!
 
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