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Ok took some pics for the life of me can’t find the carb drain screw on my 88 flstc. Also tried looking inbetween the jugs from the horn side to the back of he carb( that was fun) nothing any ideas I see a screw here but to high
Is that a Mikuni carb or the OEM CV40 carb......??
From the bottom, it looks like it could be a Mikuni.....? Been awhile since I worked on/looked at a Mikuni, and I don't remember any "drain screw". I believe the float bowl will come right off with 4 screws. That will get all the gas out of the carb.
In the case of an OEM CV40, I've had mine off the bike ('01 88ci) about 5 times. I have totally rebuilt it once. I don't know of any "drain screw". The entire float bowl portion at the bottom of the carb comes off with 4 screws.... and will allow you to remove any gas from the carb...
Why are you "draining the gas"? For a rebuild? To remove old gas? For storage?
If you just want to drain the carb for storage, any carb/any engine, start the engine, shut off the gas, and run it dry.... That has always worked for me...
If you're looking to rebuild, remove it and then drain it by removing the bowl. You can then see what comes out and stays in the bowl area.
If you are just trying to remove old gas, might want to pull it, drain it, and inspect it anyways (not that hard to remove it). Or, you could probably remove the float bowl with the carb on the bike (year/make/model/equipment dependent), and do a quickie drain & inspection (with the gas shut off of course)....
Good luck with your repair/maintenance.....
Last edited by hattitude; May 16, 2019 at 04:10 PM.
Is that a Mikuni carb or the OEM CV40 carb......??
From the bottom, it looks like it could be a Mikuni.....? Been awhile since I worked on/looked at a Mikuni, and I don't remember any "drain screw". I believe the float bowl will come right off with 4 screws. That will get all the gas out of the carb.
In the case of an OEM CV40, I've had mine off the bike ('01 88ci) about 5 times. I have totally rebuilt it once. I don't know of any "drain screw". The entire float bowl portion at the bottom of the carb comes off with 4 screws.... and will allow you to remove any gas from the carb...
Why are you "draining the gas"? For a rebuild? To remove old gas? For storage?
If you just want to drain the carb for storage, any carb/any engine, start the engine, shut off the gas, and run it dry.... That has always worked for me...
If you're looking to rebuild, remove it and then drain it by removing the bowl. You can then see what comes out and stays in the bowl area.
If you are just trying to remove old gas, might want to pull it, drain it, and inspect it anyways (not that hard to remove it). Or, you could probably remove the float bowl with the carb on the bike (year/make/model/equipment dependent), and do a quickie drain & inspection (with the gas shut off of course)....
Good luck with your repair/maintenance.....
Thanks for the info, just want to clean it out do not know what the previous owner did or didn’t do. So figure as I am getting to know her I would find where everything is but really appreciate your information. Can’t find any markings on it either .
Thanks for the info, just want to clean it out do not know what the previous owner did or didn’t do. So figure as I am getting to know her I would find where everything is but really appreciate your information. Can’t find any markings on it either .
If you pull it off the bike, take a pic, and someone will be able to tell you which carb it is... If you don't want to open it all up and clean it all out, you will then be able to at least take the bottom off, check the float area, and see what jets you have in there....
Good luck...
PS- here's what the OEM CV-40 looks like from a 2001 prior to cleaning/rebuild......
Last edited by hattitude; May 16, 2019 at 06:56 PM.
Is that a Mikuni carb or the OEM CV40 carb......??
If the carb is original, it is a Butterfly type carb....
Pictures are way too close up to tell what we are looking at, but I think I see the plug on the float bowl that a Mikuni would have (for changing jets without removing float bowl).
Pull that plug, it will drain...
Last edited by Dan89FLSTC; May 17, 2019 at 01:07 PM.
If the carb is original, it is a Butterfly type carb....
Pictures are way too close up to tell what we are looking at, but I think I see the plug on the float bowl that a Mikuni would have (for changing jets without removing float bowl).
Pull that plug, it will drain...
Yeah, I just realized I also answered another post of his, on both when I read "88 flstc" my mind went right to 88ci flstc, not a 1988 flstc....
I had a bad reading comprehension day...!
Stupid part is I owned an '89 FLSTC and loved that bike. It was the first bike of mine that I did most of the maintenance/mod work on.... I should know better...
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Carb drain screw ?
