Where do we get new gasket kit that contains all those jets, valves, and gaskets? My bike is a 1977 and it really needs this done. THANK YOU for the diaphragm leak test with you finger on the hole! Fantastic quick trick for such an important part.
Took my 1972 XS carburetors apart back in 73 or 74. After watching your video, I am surprised my bike even ran after I put it back together. Thought my mind was going, was thinking I moved the clips on that rod thingy up a little to lean out the mixture. Since it has been 50 years, I was very happy to see you tinker with the clips. Still have a few working brain cells left. RIde a Honda CB 500 X now. My tinkering with the bike now is just putting air in the tires.
I'll be tinkering a little bit more on that CB 360 that I did. For some reason the transmission locked up on me 12 and a half miles away from where we were camped, so yes I'll be tinkering again. Thanks for watching
Most of the times removing the cap for the chain adjuster you can drop them out together, I've worked on earlier bikes sometime this is not possible. Thanks for watching.
Great video Mr Miyagi but with respect, they wont be Philips headed screws, they will be JIS screws, [ Stands for Japanese Industrial Standard ] the profile in the screw head is slightly different and so to avoid mushing the heads after they've been in there for years you should therefore use JIS type screwdrivers. Sorry to seem a know -all but it might help someone avoid a lot of hassle in the future.
1976 Yamaha XS650 Twin. Rebuilt carbs per your video. Install carbs back on bike but the idle runs up by itself to 2,000-3,000 and stays there or after twisting throttle when bike is warm. Doesn't seem to happen when first starting it. Synced both butterflies. What is causing this? Troubleshooting ideas? Could it be air getting in around butterflies? Manifolds? HELP!!
I did spray carb cleaner around the carbs where they meet the boots/manifolds and the engine rev did not change up or down. If there was a air leak shouldn't the idle increase?
Well, it depends a lot on altitude, temperature, carburetor settings spark plug settings, ignition system and some bikes are just are cold blooded to start. Thanks for watching.
1976 Yamaha XS650C Twin. Very helpful video! Wish video had some close ups during process. Problem we had was the original Main Jet was 122.5 and Pilot Jet was 25. Only rebuild kit (1976-77 XS650) I found was 135 Main Jet and Pilot Jet 27.5. Hope this doesn't cause issues with running to lean or rich. Any recommendations/adjustments needed if there's an issues?
are the diaphragms on the bs38 slides replaceable? or do i have to buy whole new slide/diaphragms combo? over in the UK a new pair of slides is nearly £220
Yes I reused them before if they're not torn or have a hole in them they're usually good to go of course I've also patch them too using a rubber sealer. Thanks for watching
Hey, Miyagi. This is the best place I could find to post, but if you have an email address, I can send you more detail. Talking about these diaphragms.. mine were like seized up hard plastic, so I gently removed them, but I failed to take pictures of the placement of everything. Like on your video, I know the diaphragms fit the slots, but I’m nervous rebuilding these because I had to order new diaphragms. I pulled the old ones out and I’m ready to put the new ones on, but I don’t know exactly where they were sitting or how big of a deal that is. The needle jet lean/rich adjusters are still in the position they were when I pulled them out. I guess my main concern is putting these diaphragms on and missing something other than the simple fact of putting the diaphragms in the slot. It was quick, but you mentioned in the video how these are sitting is important. I look forward to hearing back!
I forgot to mention one of the plastic rings on the top of the slide is freely spinning, the other will not move. My gut tells me if this spins out of the notch it could cause issues, so I figure I’d ask the expert to see if this is a real problem.
I'm thinking of replacing the two air boxes with like K&M air filters. What issues will I have doing this if any? Adjustments to correct any idle, running lean or rich ?
Try soaking in the carburetor in small diesel or kerosene for couple of hours. Sometimes a lightly tapping on the bowl will release it. Hopefully that helps. Thanks for watching.
In other news. After cleaning the carb, I reset the floats to 24mm, and I set the idle screw to the height of a sewing needle on the bench. But when I put the carb back on the bike it ran with an extremely high rev until I shut the bike off. What did I do wrong? Did I set the butterfly valves too high? Or did I mess with the floats? The bike also backfired quite a bit.
The idle screw is not what you set the butterflies with it is the screw between the carburetors that you equal out the butterflies. If you've turned the idle up of course it will run at extremely high RPMs and you have not set your butterflies proper. Thanks for watching
Hey, i just pulled apart my carbs of a 1978 XS650, the rubber on one slid has come loose and moved / turned on the slide, now I'm not sure which direction the slid should be in the carb.? Does the high tapered side of the slide face the filters? Thx
Well first off I do these videos for you guys to do it yourself . Plus I'm retired and have way too many projects for myself. But thanks for asking and thanks for watching.
@@klonklone7787 it's hard for me to take care of everyone but it would different if you live close to me , I don't like trying to ship items these days. Plus I'm not fast on doing the work and I'm involved with a lot of different groups so it makes it difficult for me to sometimes to do stuff.
@@outlaw86custom No I completely understand! I really appreciate your help. I actually have a question for you that you may be able to answer. On my xs650, I’m trying to have both intakes go into a single carb manifold. Could I use just one of these? Would I have to mess with the jetting at all?
@@klonklone7787 you can run a single carb manifold most run a 36 mikuni carburetor rejected. Or you could run a Amal 930 carburetor it also needs the proper jetting. Just make sure the manifold is built proper.
You needle valve stuck open a quick little trick you're doing this and sometimes it works sometimes it doesn't. You can turn the fuel off on the tank either start the bike and run the carburetors out of fuel or you can drain the carburetor then just open up the fuel on the tank and this will flush any particles that are hanging up the needle valve and you should be good to go. Miyagi
Thank you for the video!! Helped me rebuild my carbs, and they've never run better.
Great I'm glad to hear that and thanks for watching.
Thanks Mr M!
You are very welcome! Thanks for watching.
Where do we get new gasket kit that contains all those jets, valves, and gaskets? My bike is a 1977 and it really needs this done. THANK YOU for the diaphragm leak test with you finger on the hole! Fantastic quick trick for such an important part.
Mikesxs or Japan on eBay for parts. Thanks for watching
Thanks you for the video
Thanks for watching!
I would like to see you put the carbs back on the motorcycle, start, and adjust them.
Does it matter what kinda bike it is?
Yet again another interesting how to video, well done I look forward to the next one.
Hi looking very good
Thanks for the knowing warning on the balance tube nipples. Where do we get a set like the new ones you showed us?
I believe Mikesxs has them. Thanks for watching
Took my 1972 XS carburetors apart back in 73 or 74. After watching your video, I am surprised my bike even ran after I put it back together. Thought my mind was going, was thinking I moved the clips on that rod thingy up a little to lean out the mixture. Since it has been 50 years, I was very happy to see you tinker with the clips. Still have a few working brain cells left. RIde a Honda CB 500 X now. My tinkering with the bike now is just putting air in the tires.
I'll be tinkering a little bit more on that CB 360 that I did. For some reason the transmission locked up on me 12 and a half miles away from where we were camped, so yes I'll be tinkering again. Thanks for watching
Perfect. Thanks for your time to explain.
Great video, thanks for posting. I love these explanations but I'm still waiting for him to catch a fly with some chopsticks.
Well thanks but I have been practicing with my chopsticks. One theses days I'll film it!
I love the way he says 'be sure to wear gloves and safety glasses..' then proceeds to wear neither!!! 🤣
Safety third! Thanks for watching.
Were you able to remove the carbs together as one piece from the engine. Earlier carbs had to be removed separately because of the cam chain adjuster.
Most of the times removing the cap for the chain adjuster you can drop them out together, I've worked on earlier bikes sometime this is not possible. Thanks for watching.
Great video Mr Miyagi but with respect, they wont be Philips headed screws, they will be JIS screws, [ Stands for Japanese Industrial Standard ] the profile in the screw head is slightly different and so to avoid mushing the heads after they've been in there for years you should therefore use JIS type screwdrivers. Sorry to seem a know -all but it might help someone avoid a lot of hassle in the future.
That's why I changed them to allen heads, thanks for the input.
Excellent video!
1976 Yamaha XS650 Twin. Rebuilt carbs per your video. Install carbs back on bike but the idle runs up by itself to 2,000-3,000 and stays there or after twisting throttle when bike is warm. Doesn't seem to happen when first starting it. Synced both butterflies. What is causing this? Troubleshooting ideas? Could it be air getting in around butterflies? Manifolds? HELP!!
You probably have an air leak in the manifolds, most of the time that's the main cause. Thanks for watching
I did spray carb cleaner around the carbs where they meet the boots/manifolds and the engine rev did not change up or down. If there was a air leak shouldn't the idle increase?
What is the cause of my 1980 XS 650 being “ cold blooded” upon start-up. Once it warms up it runs beautiful.
Well, it depends a lot on altitude, temperature, carburetor settings spark plug settings, ignition system and some bikes are just are cold blooded to start. Thanks for watching.
1976 Yamaha XS650C Twin. Very helpful video! Wish video had some close ups during process. Problem we had was the original Main Jet was 122.5 and Pilot Jet was 25. Only rebuild kit (1976-77 XS650) I found was 135 Main Jet and Pilot Jet 27.5. Hope this doesn't cause issues with running to lean or rich. Any recommendations/adjustments needed if there's an issues?
Running too lean or too rich based on what type of air cleaners you have and I'll open the exhaust is.
are the diaphragms on the bs38 slides replaceable? or do i have to buy whole new slide/diaphragms combo?
over in the UK a new pair of slides is nearly £220
Yes I reused them before if they're not torn or have a hole in them they're usually good to go of course I've also patch them too using a rubber sealer. Thanks for watching
Hey, Miyagi. This is the best place I could find to post, but if you have an email address, I can send you more detail. Talking about these diaphragms.. mine were like seized up hard plastic, so I gently removed them, but I failed to take pictures of the placement of everything. Like on your video, I know the diaphragms fit the slots, but I’m nervous rebuilding these because I had to order new diaphragms. I pulled the old ones out and I’m ready to put the new ones on, but I don’t know exactly where they were sitting or how big of a deal that is. The needle jet lean/rich adjusters are still in the position they were when I pulled them out. I guess my main concern is putting these diaphragms on and missing something other than the simple fact of putting the diaphragms in the slot. It was quick, but you mentioned in the video how these are sitting is important. I look forward to hearing back!
I forgot to mention one of the plastic rings on the top of the slide is freely spinning, the other will not move. My gut tells me if this spins out of the notch it could cause issues, so I figure I’d ask the expert to see if this is a real problem.
I'm thinking of replacing the two air boxes with like K&M air filters. What issues will I have doing this if any? Adjustments to correct any idle, running lean or rich ?
It will run leaner, it will have more air flow.
Great video.
Thanks glad you enjoyed it, thanks for watching.
Very informative, but it would be nice if you had a close up of the process.
Which process are you asking about?
Great video. Many thanks.
Thanks for watching!
so good, which manual do you reference?
I have several manuals which kind of overlap and that's the way I come up with a lot of my information.
Thanks for watching
What can I do if the main jets don’t want to turn? I can’t seem to get the lower bowls off
Try soaking in the carburetor in small diesel or kerosene for couple of hours. Sometimes a lightly tapping on the bowl will release it. Hopefully that helps. Thanks for watching.
@@outlaw86custom that worked, you’re an internet gem. Thank you so much!
This is so helpful. Thank you!
Do you do gambler 500? I think I met you thru that
Yes , just did the Idaho Gem state gambler and the WAG Sasquatch run is coming up , so I'll be there.... thanks for watching
Thanks so much had no idea what I was doing
What makes you think I know what I'm doing thanks for watching.
In other news. After cleaning the carb, I reset the floats to 24mm, and I set the idle screw to the height of a sewing needle on the bench. But when I put the carb back on the bike it ran with an extremely high rev until I shut the bike off.
What did I do wrong? Did I set the butterfly valves too high? Or did I mess with the floats? The bike also backfired quite a bit.
The idle screw is not what you set the butterflies with it is the screw between the carburetors that you equal out the butterflies. If you've turned the idle up of course it will run at extremely high RPMs and you have not set your butterflies proper. Thanks for watching
@@outlaw86custom What should I set my floats to?
@@christianpeters6579 BS38s carbs 25+or- 2.5 mm bs34 24+or- 1mm
Hey, i just pulled apart my carbs of a 1978 XS650, the rubber on one slid has come loose and moved / turned on the slide, now I'm not sure which direction the slid should be in the carb.? Does the high tapered side of the slide face the filters? Thx
You fix it allready?
Where did you get the kit from? Looking for 83 carb rebuild kit
If I remember correctly I think I ordered off of eBay but I believe that you can buy them also from Mikesxs.com
Thanks for watching
How much would you charge for me to send you mine to fix?
Well first off I do these videos for you guys to do it yourself . Plus I'm retired and have way too many projects for myself. But thanks for asking and thanks for watching.
@@outlaw86custom don’t have the tools unfortunately. But okay, thank you!
@@klonklone7787 it's hard for me to take care of everyone but it would different if you live close to me , I don't like trying to ship items these days. Plus I'm not fast on doing the work and I'm involved with a lot of different groups so it makes it difficult for me to sometimes to do stuff.
@@outlaw86custom
No I completely understand! I really appreciate your help. I actually have a question for you that you may be able to answer. On my xs650, I’m trying to have both intakes go into a single carb manifold. Could I use just one of these? Would I have to mess with the jetting at all?
@@klonklone7787 you can run a single carb manifold most run a 36 mikuni carburetor rejected. Or you could run a Amal 930 carburetor it also needs the proper jetting. Just make sure the manifold is built proper.
Where does it say what size carbs they are?
Well it depends on the year of bike but you can just measure the end of the carb 34mm or 38 mm. Or go to Mikesxs and check out the carb ID chart.
@@outlaw86custom Thank you.
mine poures fuel out of right carb....why does it do that
You needle valve stuck open a quick little trick you're doing this and sometimes it works sometimes it doesn't. You can turn the fuel off on the tank either start the bike and run the carburetors out of fuel or you can drain the carburetor then just open up the fuel on the tank and this will flush any particles that are hanging up the needle valve and you should be good to go.
Miyagi
@@outlaw86custom I just ordered a rebuild kit for the carbs
The needle is stuck or the float could have a hole in it.