How To Rebuild Honda Twin CB350 & CL350 Carburetors-Vintage Motorcycle Restoration Project:Part 75

[@michaela5261]

I'm not sure if Brian mentioned it, but make sure to check the float bowl for leaks first. They seem to have an issue with cracked overflows. I had two carbs both rebuilt only to find out about this issue after install.

[@KeepOnWrenching]

Great point. Thanks for adding that.

[@finallyholdingontoletitgo1607]

Your microphone works great. You said lightly tap those jets in and it sounded like you took a sledge to it. 😂 Great video brother, very informative and I dig the common motor shout out!

[@KeepOnWrenching]

Lol

[@smashingartful]

super helpful!

[@KeepOnWrenching]

Good deal!

[@4truetime290]

Good video, even better call by call monologue, great job Brian!

[@KeepOnWrenching]

Thanks, man! That was a long process. The feedback is really appreciated. Tried to be as detailed as possible. Cheers!

[@thomasldeanjr3337]

I'm on my last ditch effort Brian. I saw the part about the felt washers on the throttle pin/rod that leak air and should be replaced. I ordered some and they will be here soon. This is the last thing I'm going to try and have checked everything else. The minute I hit 3000 rpm's or higher, the engine does not return down to idle and sometimes increases in rpm's. Cable checked and is good - nice even pull on both carbs simultaneously. Nothing else sticking. Can you offer any advice? Thanks again. Love your videos.

[@KeepOnWrenching]

When you spray carb cleaner or wd40 around those shafts does the engine slow down?

[@KeepOnWrenching]

I didn’t end up having to replace the seals. I dropped in/soaked the area and old ones in marvel oil. That worked for me. Are you sure the diaphragms aren’t cracked? Even the slightest puncture can cause real issues. Sounds like a carb problem to me. I’m struggling with a similar issue with another bike. I’ll probably rebuild/clean the carbs again.

[@thomasldeanjr3337]

@@KeepOnWrenching I'll try that as well. I haven't done that.

[@nickpanhead7209]

Brian, the fuel mixture screw all in then back out 1.5 turns on each carb. With both of thse carbs do they have to be sequenced to each other. I pulled the plugs, and they look a little black. You'd think this could be my issue. Why I'm blowing out smoke? Maybe it's just a carburetor adjustment ? Do you rebuild these motors for other people to, or just for yourself. What state are you in

[@KeepOnWrenching]

Carbs need to be synced at the cables. Start at 1.5 out on mixture. I think I have a video. Sounds like you’re running rich. Sync butterflies kzbin.info/www/bejne/jICrc5Wdep2Zicksi=3T4FwIHhz6juDB6a Adjust: kzbin.info/www/bejne/rXPCnpt4mamlnrMsi=nVplh8TnICH11rdt I don’t take in any projects. I bet it’s a carb/throttle adjustment deal. It’s finicky

[@nickpanhead7209]

@KeepOnWrenching thank you Brian for getting back and sending g other video's of yours to check out. I'm hoping that's all it is a carburetor adjustment. I'll check it out next week when I'm with the bike again. Thank you again

[@goesintite]

Is this guy Jack Black's twin brother or something? Sounds like him just by voice alone! LOL

[@KeepOnWrenching]

People keep saying that! Lol

[@goesintite]

@@KeepOnWrenching It's not a bad thing! :)

[@anlog2010]

Hello everyone! I'm trying to restore this specific motorcycle (Honda cb350 Twin), and I'm currently reviewing the carburetors. Where can I find that manual? It would be great for me!!

[@seriousros7280]

maybe I'm being daft but what are you bending when you are adjusting the float height? It's hidden behind the carb body is it the metal bar which connects the floats? Shouldn't the gasket fit without a sealer? ... great video though very thorough - thx

[@KeepOnWrenching]

There’s a small tab in the middle. Check this out: kzbin.infoUYSTq64Wr_s?feature=share

[@seriousros7280]

@@KeepOnWrenching Thank You - That's Great Keep On Wrenching and have a great Summer!

[@cylekeltner1261]

Hey amigo! need help with carbs. where can I send a short vid on what its doing? help!

[@KeepOnWrenching]

Hit the keeponwrenching.com site. Messenger available there.

[@waphotos1498]

Thank you for video. Question : How do you replace a torn Diaframph (sp) on the slide ?

[@KeepOnWrenching]

I’d have to look specifically but I believe they just pressure fit into the slide. That’d be a great video for me to do in the future. I think I have a spare new one laying around.Thanks!!

[@finallyholdingontoletitgo1607]

Check out, common motor collective They have a channel on KZbin and even sell the replacements.

[@glenndavidson2943]

Here's a good video. I followed this guy's method, but installed the new diaphragm from the bottom of the slide. Use your fingernail to create a little space between the plastic ring and the metal ring. kzbin.info/www/bejne/enzaq3pogs1ngNE&ab_channel=HepcatHarley Common Motor method looked scary.

[@waphotos1498]

@@finallyholdingontoletitgo1607 THANK YOU Joshua for info !

[@thedewdster]

If you ever gotta pull those diaphragms out that permatex is gonna make that a nightmare to clean off and reinstall just saying... Otherwise your videos have been a major help for me in my cb350 restoration. My carbs ended up being unsaveable so going with mikunis 😎

[@KeepOnWrenching]

Very true. I don’t use that stuff there anymore. A bit of overkill IMO

[@KeepOnWrenching]

Good luck with the Mikunis.

[@BEVO_vs_The_World]

So what if it isn’t free sliding after install??? Oh and also the factory Keihin air screws have a stamp on them to identify one half side

[@KeepOnWrenching]

I’ve never seen a mark but I think the color helps. Can’t hurt. You can reach inside and see if it is sliding freely and returns too.

[@saxby1448]

I'm not 100% on this . But isn't the hight of the float bowls measured on a slope (as the Wight of the floats will be pushing the spring down .) And not the point of shutting the fuel off

[@KeepOnWrenching]

I’ve always measured height in this way and not had issues. There could be other methods tho. I recall seeing a diagram in one of the manuals.ii will keep my eyes open for alternatives. Thanks for commenting and bringing this to my attention.

[@saxby1448]

@@KeepOnWrenching I'm not saying I'm right . As I'm having problems setting up a non runner bike for some time now and had a similar problem. After spending some time on the forums it was explains were I was going wrong . kzbin.info/www/bejne/nWfcZGV9rJp7gZY Explained it better a few minutes in