Carb install help?

Joei

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Hi guys,

I started a thread around a year ago asking what a possible problem could be with my bike leaking gas and people recommending taking the carb out and cleaning it so I did.

I am barely getting around to installing it once again but I sort of forgot how everything goes. A friend was helping me with it and he recommended cutting some gas lines and connecting them since it seemed it was leaking from there. I have included an image with the old lines circled in red showing spots it was leaking from.

After this, It seems that the leak is gone but I am not sure if it is installed properly. I have also attached pictures of how it looks after it was installed for reference.

I’ve been looking around for a guide on how to install carburetors but I haven’t seemed to find any luck. If anyone can link one here or provide any guidance on what to do about the gas lines that would be appreciated!
 

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In the pics the fuel line appears to be the clear plastic tubing easily found. I don’t believe that is a good choice for either gasoline or heat exposure.
Likely to fail soon.
Hope somebody can help you find some good quality fuel line before the installation
 
The small lines don't really matter, they are just vents or overflows. They do not and do not regularly contact fuel. It doesn't matter if they fail, and you can do without them if you want.
The large lines -- the two that connect to the fuel tank, and the very short one that connects the two carbs, those matter. Fuel line from the auto parts store is really bulky, but would be better than what you have. Maybe you can find more appropriate thin wall fuel line on eBay.
 
One other comment, not about the fuel lines. I see the crankcase vent barb at the head has a hose attached to it, but there's no air filter box installed yet. I did this job last week and I can say for certain that you need to fit the vent hose to the air filter box first. Then offer filter box up in to place, secure it and then fit the breather hose to the head crankcase breather barb. If you don't, the connection of the hose at the filter box is pretty much unaccessible with the filter box in place. There's one air filter box each side and each has it's own breather hose.

Also, when fitting the second air filter box, I recommend removing the filter element. There's a rubber cross over boot connecting the inner faces of the filter boxes together. By removing a filter you can get fingers inside the filter box to align the rubber cross over boot connection. If you don't do that, the second filter box most likely won't slip in place very easily and it won't be obvious why. (Be very careful of sharp edges or you can cut your fingers doing this bit).

Hope that helps.
 
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In the pics the fuel line appears to be the clear plastic tubing easily found. I don’t believe that is a good choice for either gasoline or heat exposure.
Likely to fail soon.
Hope somebody can help you find some good quality fuel line before the installation
thank you for the advice! I went to the local auto parts store to buy a different one.
 
Just a suggestion. Use arrows to highlight an area or a part
. Some of the pics are obscured so much by the scribble can't see much
Ah okay gotcha, yeah I will re-edit the pictures with those suggestions. Thanks!
 
The small lines don't really matter, they are just vents or overflows. They do not and do not regularly contact fuel. It doesn't matter if they fail, and you can do without them if you want.
The large lines -- the two that connect to the fuel tank, and the very short one that connects the two carbs, those matter. Fuel line from the auto parts store is really bulky, but would be better than what you have. Maybe you can find more appropriate thin wall fuel line on eBay.
Thank you! I appreciate it! I will keep that in mind.
 
One other comment, not about the fuel lines. I see the crankcase vent barb at the head has a hose attached to it, but there's no air filter box installed yet. I did this job last week and I can say for certain that you need to fit the vent hose to the air filter box first. Then offer filter box up in to place, secure it and then fit the breather hose to the head crankcase breather barb. If you don't, the connection of the hose at the filter box is pretty much unaccessible with the filter box in place. There's one air filter box each side and each has it's own breather hose.

Also, when fitting the second air filter box, I recommend removing the filter element. There's a rubber cross over boot connecting the inner faces of the filter boxes together. By removing a filter you can get fingers inside the filter box to align the rubber cross over boot connection. If you don't do that, the second filter box most likely won't slip in place very easily and it won't be obvious why. (Be very careful of sharp edges or you can cut your fingers doing this bit).

Hope that helps.
Thanks for this piece of advice! I appreciate!!:D I will definitely come back to this when its time to install the air filter boxes.
 
Boy, I really hate those airboxes, lol, what a P.I.T.A. Best fuel line I've found is the thin wall (just like original) black rubber line from YamahaXS650.com. Very reasonably priced and very good stuff (even comes in 25' rolls, I'm on my 2nd one, lol) .....

https://yamahaxs650.com/product/black-rubber-fuel-line-1-4-x-25/
Thank you! I just went to go pick up some line from the local auto parts store in the mean time but I will also look into ordering this if that isn't doing the job.
 
The small lines don't really matter, they are just vents or overflows. They do not and do not regularly contact fuel. It doesn't matter if they fail, and you can do without them if you want.
The large lines -- the two that connect to the fuel tank, and the very short one that connects the two carbs, those matter. Fuel line from the auto parts store is really bulky, but would be better than what you have. Maybe you can find more appropriate thin wall fuel line on eBay.
so the red arrow lines are the ones that matter and the yellow line ones are the ones I can do without?
 

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