250 carb question - Honda Rebel Forum
 
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post #1 of 4 Old 09-17-2019, 11:25 PM Thread Starter
 
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250 carb question

hey yall back at it again, working on the 250 this time. its been running like crap so i decided today id clean the carb so i can enjoy this falls riding... ive never cleaned the carb on my 250. everything went smoothly (except a few stripped screws which i managed to get out) but im at the butterfly valve now or the throttle body whatever its called. i managed to remove the 2 screws holding the disc in, but i cant seem to figure how to remove part with the spring the cables attach to with the bar that goes through the carb. im not sure what this parts called but thats my best description of it. i attached an image of it if no one knows what im talking about. the manual doesnt say anything about it coming apart and i dont want to break anything so i left it alone for now. it came apart on my 450 carbs so id assume it comes apart on the 250 carb but ive been wrong many times before.
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2002 Honda Rebel 250
1981 Kawasaki KM100
1986 Honda Rebel 450
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post #2 of 4 Old 09-18-2019, 08:07 AM
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There is no need to remove that part to clean the carb. Only the the things that unscrew (except the butterfly) or are held on by a cotter pin, need to be removed, in addition to the rubber and plastic parts. It's dirty jets and/or internal passages that are usually causing the problems.

If you have access to an ultrasonic cleaner, use that. If not, get a can of Berrymans Chem Dip and soak only the metal parts in it for 2-7 days. Use high pressure air, not the kind in a can, to blow out all the orifices after rinsing with water.

Keepin' all the left over parts. Gonna use 'em to build another bike!

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post #3 of 4 Old 09-18-2019, 01:26 PM
 
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few carbs have need to remove butterflys or throttle shaft..
Those that do have nylon bushing that is replaced or wear that requires insert or machining to take up slop..

The two screws that hold the disk (butterfly plate) are peened to damage threads after install.
this is done so there is little chance of screws backing out and ingested by engine..
Google "peening butterfly throttle screws"

most butterfly plates are beveled slightly to fit flush against throttle bore when closed..
those that have the beveling only assemble properly in one direction..
never paid much attention to the rebel design..

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post #4 of 4 Old 09-18-2019, 10:54 PM Thread Starter
 
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Quote:
Originally Posted by SoakedKarma View Post
few carbs have need to remove butterflys or throttle shaft..
Those that do have nylon bushing that is replaced or wear that requires insert or machining to take up slop..

The two screws that hold the disk (butterfly plate) are peened to damage threads after install.
this is done so there is little chance of screws backing out and ingested by engine..
Google "peening butterfly throttle screws"

most butterfly plates are beveled slightly to fit flush against throttle bore when closed..
those that have the beveling only assemble properly in one direction..
never paid much attention to the rebel design..
Appreciate the details! I have a can of chemdip which i have been soaking the bowl and accelerator pump assembly in for the past 24 hours, and i plan to soak the body of the carb tonight. ill put that butterfly back in before i clean it and rebuild it when my parts are here. thanks again!

2002 Honda Rebel 250
1981 Kawasaki KM100
1986 Honda Rebel 450
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