Topic: 74 cb 550.... Another carb question.. Rebuild kit from ebay (updatedx2!!)

[Jimsun]

Hey guys and many thanks to your support

Im planning on buying a carb rebuild kit and im looking for your advise as well as your experience regarding the K&L rebuild kit. Im buying it off ebay. I know i only need one but might as well buy a set as it is cheaper (resell the rest). I have found out that the needle on carb 3 is not as spongy as the others.

http://bit.ly/1l40wHT

Please keep in mind that this is for a 1974 cb 550 full stock 4-4

Heres the story.
http://forums.sohc4.net/index.php?topic=133049.0

Hey guys

New question here. Hopefully the last and hope you guys can chime in so i can finally finish my carbs this weekend

Since i took apart everything, I am now confused as to how many number of turns i should pre set each carbs to.

To make things easier,

For the first picture, from dead top/just sitting on the thread, how many number of turns inwards should i preset the screw to?

For the second picture, from dead bottom/screwed all the way in, how many number of turns outwards should i turn the screw?

first picture, from dead top/just sitting on the thread, how many number of turns inwards should i preset the screw to?


second picture, from dead bottom/screwed all the way in, how many number of turns outwards should i turn the screw?



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Previous Post in quote
Title: 74 cb 550.... Another carb question.. Mystery spring
 ANSWERED. My post #23 sums it

Hello folks,

I have a mystery spring that i didn't see when i took apart carb #1. I was scrubbing the carb pieces and all of a sudden it appeared after i was draining the liquid.

The second is this thing-a-ma-jig slider/needle thingy. Is the second cylinder like thingy suppose to be in this shape? my first one wasn't like this at all. In addition, it was harder it pull out that the first and the other carb i've cleaned before.  Pics below.

Mystery spring from carb #1
Carb #2 cylinder slider neddle thing-a-ma-jig

[harisuluv]

The slide does have a cut away section that faces the airbox side.  That spring is from your mixture screw, perhaps you took the mixture screw out and forgot the spring, then when you turned it upside down to take the slide out it fell out.

[Ewan 500K1]

parts diagram for 500 four carbs attached

[Jimsun]

@haris

Thanks for the speedy response. Are you talking about the flat head that has a screw? Heres another pic with the screw you might be talking about.

Sorry about the lighting. I forgot to edit it and i'm about to step out for a bit.



@ewan

The resolution is too small for me to fully see where it originated from.

[LesterPiglet]

That spring looks like it might be a mod for a missing jet holder clip.

Your slide looks damaged to me. There shouldn't be a notch opposite the cutout.

http://www.cmsnl.com/honda-cb550f1-super-sport-550-four-1976-canada_model17110/partslist/E16.html#results

Do you have part# 39 in the above diagram? At least I think it's 39, a bit hard to tell.

[Jimsun]

That spring looks like it might be a mod for a missing jet holder clip.

Your slide looks damaged to me. There shouldn't be a notch opposite the cutout.

http://www.cmsnl.com/honda-cb550f1-super-sport-550-four-1976-canada_model17110/partslist/E16.html#results

Do you have part# 39 in the above diagram? At least I think it's 39, a bit hard to tell.

Do you mean the clip that holds the jet. The clip that's located below the float right? If that is so, then yes.

[Jimsun]

updating if anyone has any information on what it could be...

thanks again in advance

[Jimsun]

updated.

I still haven't found the reason location of that spring

[TwoTired]

The smaller spring in the picture is likely the for the ball friction detent on the choke on #1 carb.

[Jimsun]

The smaller spring in the picture is likely the for the ball friction detent on the choke on #1 carb.

I dont quite understand where this ball friction detent is...

Im looking at this diagram and i cannot muster the location.

[Bru-tom]

ok, let me try explain this... You know your choke on the side of carb #1 by the fuel tap on your tank.... When you operate it, it makes that click... It is in fact the ball bearing that if being pushed into an indent causing it to sort of "lock" into place. that spring is what pushes the ball bearing into the indent.

So its on carb one, opposite side of the choke attached to the butterfly shaft.

[Jimsun]

ok, let me try explain this... You know your choke on the side of carb #1 by the fuel tap on your tank.... When you operate it, it makes that click... It is in fact the ball bearing that if being pushed into an indent causing it to sort of "lock" into place. that spring is what pushes the ball bearing into the indent.

So its on carb one, opposite side of the choke attached to the butterfly shaft.

Hmm i still cant picture the location but ill check it out tonight.

I'll take a pic of the carb and hopefully someone will chime in if i somehow cant figure it out.

Again, thank you guys for the help

[Duanob]

I may be wrong but I think this is where the spring is located.

[Deltarider]

Just curious: what made you take the carbs apart?

[Jimsun]

Just curious: what made you take the carbs apart?

PO said carbs needed to be cleaned/rejetted and that carb 3 overflows - gas leaks
So i thought all right since the bike will be stored in my basement over the winter, i might as well do most of the maintenance now so its ready for the coming season. Since i need to remove the whole carb assembly out, i thought that i might as well clean all the carbs. Who knows when it was last cleaned and because there was rusts in the tank, i thought its worth it. All the carbs were pretty dirty - especially the bowls.

Thats why. Do you think i should have not bothered?

I may be wrong but I think this is where the spring is located.

Thanks. Ill take a look tonight.

[Deltarider]

Cleaning and rejetting can all be done by removing the float bowls. All what's needed for maintenance is then accessible. It strikes me that taking apart carbs in all its components like lifters and all is almost epidemic in this forum. Honda deliberately constructed them so one doesn't need to unless there's some sort of damage. I myself have not encountered that damage nor have I read about it in other Honda Four fora.
Maybe you had a good reason for dissassembling your carbs completely but I wouldn't like others to conclude it is a must.

[TwoTired]

Maybe this picture will help to locate where the spring and detent ball are supposed to be located.

I agree that dissassembly to every-part-separate level, is seldom warranted.    The only real exception in my mind is education for the curious.

Curiosity often costs money in replacing what you broke, mangled/omitted during the process.

[Jimsun]

Cleaning and rejetting can all be done by removing the float bowls. All what's needed for maintenance is then accessible. It strikes me that taking apart carbs in all its components like lifters and all is almost epidemic in this forum. Honda deliberately constructed them so one doesn't need to unless there's some sort of damage. I myself have not encountered that damage nor have I read about it in other Honda Four fora.
Maybe you had a good reason for dissassembling your carbs completely but I wouldn't like others to conclude it is a must.

I didnt know. I guess TT is right. I was too curious.

Maybe this picture will help to locate where the spring and detent ball are supposed to be located.

I agree that dissassembly to every-part-separate level, is seldom warranted.    The only real exception in my mind is education for the curious.

Curiosity often costs money in replacing what you broke, mangled/omitted during the process.

Thanks TT. I guess i wasnt too scared breaking stuff as i have a parts readily available. But now i know that its not necessary to fully disassemble the carb assembly but merely remove the float area.

[Duanob]

Replacing the 'T' o-rings is necessary and fuel lines is easier when the carbs are apart from the rack.

[rb550four]

could that little spring come from the #13 assembly , just below the ball bearing?

[LesterPiglet]

could that little spring come from the #13 assembly , just below the ball bearing?

Under the shiny brass.

[Duanob]

could that little spring come from the #13 assembly , just below the ball bearing?

You mean inside of the slide linkage? I don't think so. Doesn't look familiar to those parts.

[LesterPiglet]

[Jimsun]

Hey guys. I trully appreaciate the time you guys put into reading my posts an others.

TT is right. Its located where he said it's located. I did notice a small metal ball (oddly sized) lying around and thought nothing of it as i have a few circular solder balls around. That ball was actually the ball detent TT was point to that sits above the spring.

Thanks again guys. Problem solved.

Thanks for the effort. It's definitely not that piece. I know that piece and it looks different. I will upload the picture in a second.

[Jimsun]

Bump. I hope someone can assist me and finally get this thing done.