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help!! newbie trying to clean carbs
Posted: Tue Aug 09, 2005 5:27 pm
by marshalsimz
i have a 78 honda cx500 that is in need of a carb cleaning, could some one give me a step by step gide to do this?
thanks a bunch
Posted: Wed Aug 10, 2005 4:43 am
by beerbaron
Well, first you need to take out the carbs from your motorcycle.
Then you need to know which needle jet is the choke. You can unscrew all of the jets EXCEPT the choke needle jets.
To unscrew the choke needle jets. Screw then first and count the number of turns before it becomes tight. That will give you the setting on how to screw them back.
Then I'd suggets you put everything in degreaser for at least 8 hours.
While your at it, inspect the diaphragm for any cracks... cracks are bad.
Afther the bath I'd suggest you start brushing with soft brushes... and some soap.
Last time I used: Diesel, Windex, Boiling water (keep it out of the diaphragm).
To clean the jets I suggest using air, it should do the trick. If not, some people used a soft needle.
Then it's probably clean as a new one.
BeerBaron
Posted: Wed Aug 10, 2005 8:47 am
by TechTMW
Take out rubber parts before using degreaser - it will accelerate their wear, possibly even eating them up.
And only do one carb at a time. Even with a manual, you may get confused as to what goes where - it's always nice to have somethin to go back to.
Keep parts separate - make sure whichever parts came off carb #1 go back on Carb #1
Posted: Wed Aug 10, 2005 10:34 am
by marshalsimz
thanks guys
this is a big help
Posted: Wed Aug 10, 2005 6:26 pm
by TechTMW
Do NOT remove throttle butterflies if they are in there, Usually the screws are staked in and they must be replaced exactly as they were taken out. Don't bother, just clean around them
Posted: Fri Aug 12, 2005 3:51 am
by marshalsimz
what are throttle butterflyes?
Posted: Mon Aug 22, 2005 1:10 pm
by maximnewb
First, visit this website....read EVERYTHING!
http://www.dansmc.com/carbs.htm
Be extermely careful not to strip threads/screwheads while doing the work. The biggest problem you will have will be to clean the pilot jets. From what I can tell (in my LIMITED experience) is that they're the SMALLEST passage in the carb system, and the MOST likley to become plugged.
And I believe throttle butterflies are the metal flaps which open and close as you change the throttle position.