Tune Motorcycle Carburetors, Idle & Adjust Throttle Cable

Рет қаралды 33,053

4 жыл бұрын

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This video series features the complete restoration of a 1972 CL350 Honda Scrambler motorcycle. The videos should help anyone whether working on a cafe racer build or a full-on original restoration. I'm definitely not an expert so please refer to your manuals for proper disassembly and assembly instructions. Please leave comments if you have any questions. I'll be happy to help answer questions if I can confidently provide solutions. Again, I'm not a professional. This is my 2nd Honda motorcycle restoration and I'm learning every single day. I'd love to hear your tips if you have better ways to do things. I hope you find the series useful and entertaining. I strive to show as much detail as possible so that the videos can be used as not only a how-to resource but also a reference for the placement and original set up of parts and systems.
If you don't have one already please get a manual for your specific project. There are many available online for download for free. Common Motor Collective, from which I source many of my replacement parts, has a fantastic resource on their website: bit.ly/CBManuals You can also join groups on Facebook and get involved in the community.
Keep on wrenching, Friends! b
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Пікірлер: 97

@rmfun-qo3ge Жыл бұрын

You have great videos! I recently dove into the world of old honda's buying a 1970 cb350. These bikes all deserve a second life! Keep on wrenching,and riding!! Thanks

@JabberWacky970 Жыл бұрын

This was so so helpful. Your channel is the closest thing I have to an in person mentor. Thank you so much for everything throughout the restoration processes!!

@KeepOnWrenching Жыл бұрын

That’s so great to hear, man! Glad the channel is useful to so many.

@davidaldrich3488 4 жыл бұрын

lookin good Brian....Thanks for all the videos.....Have been looking back and had to remove my swing arm because I didn't know there were inside rubber dust boots without your video. Found them in my parts bin........ good job

@BFox-zs2uu 3 жыл бұрын

Great video, just getting into this and so helpful. Especially taking it slow for those of us who don't come from much mechanical background! Nice pace!

@KeepOnWrenching 3 жыл бұрын

Great to hear! I’m glad it was helpful. I hope you get yours humming soon. Good luck!

@zachfender8693 4 жыл бұрын

Congratulations on finishing it up Brian it looks freaking awesome been hooked on the videos for a while now hopefully you will continue with another project keep up the great work

@KeepOnWrenching 4 жыл бұрын

Thanks, Zach. I really appreciate the support. Coming up with ideas for some future vids and next steps. Hopefully keep this going. Still a couple things to do on this one.

@terrencenbanbury5220 3 жыл бұрын

I am so impressed with the amount of work that you put in on this bike. You started from almost zero. Amazing. Thanks for showing the way. Now off to the garage to adjust the carbs.

@KeepOnWrenching 3 жыл бұрын

Good luck, man! I’m honestly a bit amazed myself how well the 72 turned out. Lol

@Basscrabb57 4 жыл бұрын

Thanks for these videos Brian, I find them genuinely useful

@KeepOnWrenching 4 жыл бұрын

That’s awesome to hear, Andy. What a great compliment. Thank you.

@dieseltu1035 2 жыл бұрын

Thank you ,I'm on the verge of starting my dad's 1970 sl350. Awesome work

@KeepOnWrenching 2 жыл бұрын

Go get it! Good luck. I hope the channel is useful

@greghamilton5461 4 жыл бұрын

Perfect. Looks good and Runs Good Brian. Congratulations. Thanks for Vids and attention to detail. Great reference.

@KeepOnWrenching 4 жыл бұрын

Thanks, Greg. Got a couple last items to tidy up. Glad to finally take it for a spin.

@nickjames205 4 жыл бұрын

Dude you have done such a great job on this bike. Your patience has really paid off.and you're right I hear a lot of people referencing one-and-a-half when it comes to the airmixture screw. Maybe that's why I've been getting fouled plugs I got to go back down to three quarters and go from there.

@KeepOnWrenching 4 жыл бұрын

Thanks, man. Can’t hurt to give it a try. I need to check my plugs after riding a bit. Now the maintenance begins. Lol

@nickjames205 4 жыл бұрын

@@KeepOnWrenching yeah. hey let me ask you something so you know how the muffler's have a little hole where condensation can come out there should be one on each muffler the top and the bottom. When you get a chance check and see if you have exhaust coming out of those. Cuz I noticed I have exhaust coming out of the bottom one but not the top.so it throws off the pressure one of my mufflers is stronger than the other when the exhaust is coming out.

@CodyBonanno 3 жыл бұрын

This was an awesome video! Don't even a bike yet, but I am learning before I do!

@KeepOnWrenching 3 жыл бұрын

Fantastic! I hope you find one you love soon. Go get it!

@mfc392 3 жыл бұрын

Thanks for info! Working on my CL450.

@KeepOnWrenching 3 жыл бұрын

My pleasure. Good luck with your project!

@TulaTom 4 жыл бұрын

Congratulations! It must feel incredibly satisfying to bring that bike back from the dead.

@KeepOnWrenching 4 жыл бұрын

Literally back from the dead. Lol. Felt great. What a process.

@seriousros7280 10 ай бұрын

We had the 250 version of the Honda twin in England mine is a 1970 K1 I'm in process of resurrecting it (and me as a rider) after a 15 year break. Thanks very useful video btw my electric starter never worked so I'm kickstarting It's not having it at mo ........... I'll persevere

@KeepOnWrenching 10 ай бұрын

There are starter rebuild kits! Glad the vids are helpful.

@seriousros7280 10 ай бұрын

thanks - good exercise tho@@KeepOnWrenching

@matthewpawlak7068 2 жыл бұрын

Great video my friend! Super helpful )

@KeepOnWrenching 2 жыл бұрын

That’s great to hear

@davidaldrich3488 4 жыл бұрын

picked up the mystery oil and compression tester....thanks for tip here

@KeepOnWrenching 4 жыл бұрын

Thanks, David! That’s so awesome. Glad you caught the dust boots. Can’t thank you enough for the support.

@ceyperl 3 жыл бұрын

Really nice explanation

@KeepOnWrenching 3 жыл бұрын

Thanks!

@NorthPoleDesign 2 ай бұрын

Howdy! Just bought a '72 CL350 Scrambler and am looking forward to learning everything I can on how to keep her up & running! Thank you for the pro tip on other manuals for these bikes! I noticed you have a free Low Rez Download of the Chilton's Manual - is there a paid version for higher resolution? Thanks! I would love to find an old hardcover version! A guy can dream!

@KeepOnWrenching 2 ай бұрын

That’s a great bike. Send a message via the website.

@SinglefinPhil Жыл бұрын

@KeepOnWrenching thanks for the tips! I noticed you did this with the choke wide open, wouldn’t that impact the rpm’s quite a lot?

@KeepOnWrenching Жыл бұрын

Oh it definitely will. I think those adjustments should be done on a warm engine. Otherwise you’re chasing your tail.

@robertmedrano9790 2 жыл бұрын

Beautiful…!👍

@KeepOnWrenching 2 жыл бұрын

Glad you like it!

@cylekeltner1261 Жыл бұрын

You make excellent videos....just sayin

@KeepOnWrenching Жыл бұрын

Thanks! I really appreciate that.

@henrydreiling61 Жыл бұрын

Hey man, I love your videos. They've been very insightful. I'm having an issue with carb tuning that I was wondering if you might be able to help with. My left carb tunes up perfectly with the method you show here. However when I isolate my right carb it seems like I'm chasing the idle. When i do finally get it right and move on to the mix it takes a lot of turns open for the idle to die, then when I close it up the idle improves to the point where the screw is all the way in and the idle has increased by 400 rpm or so. I checked to make sure my jets are the same in both carbs and they are. Any tips?

@williamrodriguez5271 10 ай бұрын

Did you figure this out? I’m in the same spot.

@SinnerSince1962 2 жыл бұрын

Brian, noticed your points leads rubber grommet was not locked into place behind the cover. Also, the tach cable needs lube? Thanks for the video. I'm going to try this.

@KeepOnWrenching 2 жыл бұрын

You should definitely live up the cable. Thanks for the heads up.

@rebelreloading5265 3 жыл бұрын

Thanks man

@KeepOnWrenching 3 жыл бұрын

No problem!

@alextrapppainter Жыл бұрын

This has been so helpful. TY!! Question: I ride at good speeds between 60 to 70 for half an hour (hwy) then come to a stop and during the deceleration the Left Cylinder cuts off, then jumps on then eventually turns off for a good 10 min while I wait for it to cool down. Then I start up and ride again for a good 10 min then it starts doing it again... All is good until I slow down... So weird! Thinking electric but can carbs cause spark to drop? No popping or anything. I followed your path here. It's dialed so nice. All day at low speeds are fine. But can't go from fast (5000 rmp) to slow without Left cylinder cutting out.

@KeepOnWrenching Жыл бұрын

Make sure you’re fully charged! Could be a weak condenser

@CCitis 3 жыл бұрын

I can't get my CL 450 to run smoothly. I am going to try the single cylinder method. One plug always looks worse than the other, so maybe this will help me isolate it.

@KeepOnWrenching 3 жыл бұрын

It’s finicky stuff, man.

@greghamilton5461 2 жыл бұрын

Brian Would it matter if you had he bike on the Center stand?

@KeepOnWrenching 2 жыл бұрын

Not that I’m aware of. I think centerstand would be the way to go tho.

@perezworkz Жыл бұрын

Im having a high idle problem, no air leaks, cables not in the way…. Once the bike runs for 20 min, she starts acting up ( high idle )

@KeepOnWrenching Жыл бұрын

So I posted your issue in our Facebook Group and checking your diaphragms came up. You may want to go look at the comments there. Lots of suggestions.

@edwardgolonka-jd4sc 10 ай бұрын

Hey got anything for Ct90 trail as far as adjustment? Thx

@KeepOnWrenching 9 ай бұрын

Sorry. I do not

@teddycarr4680 2 жыл бұрын

Hey I’m having trouble getting fuel from my brand new petcock from common motor and when I start it up the bike revs to 6k immediately any ideas?

@KeepOnWrenching 2 жыл бұрын

The high revs would indicate an air leak somewhere. Usually around the manifolds or sometimes even within the carb. When it is running, spray some carb cleaner around the various connections to see if you can get the engine to slow down. If it does, that's where your air leak is. For gas flow, try it without the gas cap on to see if that makes a difference. If no difference, it's something in your carbs that is off. Might need to tear into those again to confirm no obstructions in the various passages, etc. Also, check the float height. I hope this helps.

@mikeeger7581 4 жыл бұрын

Seems to be geared more towards my twin tho the 400 cm s

@KeepOnWrenching 4 жыл бұрын

It’s quicker than my 70 CB. Feels peppier.

@onemanhisdub1969 Жыл бұрын

Hello there.... I've been watching your videos and think you or a subscriber may be able to help! I have a Honda cj250t, which is very similar to the cj360t etc... I cannot get this bike to idle 😫 Runs fine when you give it revs but will not idle... If I adjust the idle, when I give it some throttle it settles at a ridiculously high rpm... I have full spark, correct timing with points and valve settings are good. I'm tearing my hair out with this one... Please help.... All the best David.

@KeepOnWrenching Жыл бұрын

Sounds like you could have an air leak. Have you tried spraying wd-40 around the carbs, intake boots, etc? Could also have a tear in your carb diaphragms.

@HepcatHarley 4 жыл бұрын

Great job and probably the toughest part to get right. Just be careful leaving your spark plugs next to an open cylinder hole, you could cause a fire. So how's she running? Have you rechecked the spark plugs for colour etc?

@KeepOnWrenching 4 жыл бұрын

Haven’t checked the plugs yet. It ran really well...did you catch the Easter egg at the end of the video? Great point on the plug near the port. I need to get a metal clip or something. Didn’t think of that. Thanks, Hepcat.

@HepcatHarley 4 жыл бұрын

@@KeepOnWrenching Use an old spark plug strapped to the handle of a clamp with a jubilee clip, easy peasy :)

@KeepOnWrenching 4 жыл бұрын

All these years I thought they were called hose clamps. Who knew. This is much more fun.

@HepcatHarley 4 жыл бұрын

@@KeepOnWrenching I'm just educating you in the ways and terminology of us Englishmen lol

@HepcatHarley 4 жыл бұрын

@@KeepOnWrenching So dare I ask without making you shudder...what did this rebuild cost? If you don't even want to think about it, I'll understand lol

@milmex317th Жыл бұрын

The Clymer manual for the cmx 250ca is very disappointing.

@KeepOnWrenching Жыл бұрын

Most are.

@lizg8622 3 жыл бұрын

Do you think this would work on my CL 450?

@KeepOnWrenching 3 жыл бұрын

I believe the concept is very similar.

@whippersnappermoto1286 3 жыл бұрын

What is the blue light under your tank? Look like electrical flash?

@KeepOnWrenching 3 жыл бұрын

Electronic ignition

@normandosantos7591 Жыл бұрын

🎉

@KeepOnWrenching Жыл бұрын

I hope this helped!

@sfdrcm 3 жыл бұрын

The only copy of that Chilton book is $768 on Amazon. Maybe you could run off come copies.

@christopheroliver6704 3 жыл бұрын

Where is the idle adjust screw for the 360 ?

@KeepOnWrenching 3 жыл бұрын

I’m not sure. I don’t have a 360

@christianoland9878 3 жыл бұрын

Sure would be cool if you scanned that Chilton's Guide and made is useful to the public. Sure would be nice.....

@christianoland9878 3 жыл бұрын

Oh sick! It's on the website!!! THANKS! You should link in the description!! Damn, it's REALLY hard to read though. I'd chip in towards a good digital copy!

@KeepOnWrenching 3 жыл бұрын

Trying to get some copyright clearance to share a high res from Chilton.

@mikeeger7581 4 жыл бұрын

Try not to use the clamps you have for fuel lines get the squeeze scissor kind because with road vibrations I’ve had the screwdriver screw on heavy clamps you are using tend to cut thru plastic and rubber

@mikeeger7581 4 жыл бұрын

Ask me how I know and it doesn’t take long for it to wear through either. FYI Brian. Great job on the bike

@KeepOnWrenching 4 жыл бұрын

You know I’ve noticed that on my 70. Totally. I can look into some proper clips.

@mikeeger7581 4 жыл бұрын

Dktoasted. Net online is I believe the site that is the Honda twin shop manual