carb

Needing just 1 of the plastic slide needle spacers for the mikuni BS34 carbs. Part is circled in red. Anyone have one they would like to sell or can let me know where to source them? Thanks

whats up guys as some of u know been trying to get my bike up and running in proper condition I got the timing down it still needs some loving tho waiting for my light to come in so while doing that figured I go in the carbs and figure out why I have basically no idle. First I took left carb...

I purchased 2 carb rebuild kits to freshen up my stock bs38's on my 1973 tx650. Well when I had trouble getting the pilot jet out, I gave it to my brother in law since he was sure he could remove it with an EZ Out extractor. He ended up stripping the bowl threading itself. So now i'm in need of...

I have read the guides, i have searched the interwebs... but I would like some guidance / thoughts. 81 XS-650, BS34's stock main 132.5, stock pilot 42.5, but Needle Jet - 336 YO, and Jet Needle - 5IX11. also stock air jet of 135 and 2 1/2 turns out mix screw. float bowl height 21mm +-. AND i...

Hi! Recently I decided it would be a good idea to get my carbs cleaned out by ultrasound. How wrong was I...:rolleyes: So, carbs are back on bike, nice and clean, but it’s been a nightmare trying to get it running again. It starts and ticks over with choke off rather nicely, as soon as I pull...

Good morning friends, I've been holding off on tearing into my carbs on the suggestions I've read and heard about leaving well enough alone until it isn't. Also, I've been dialing in the prerequisite stuff such timing, fuel delivery, etc. 1) I was all ready to sync them, but I've found the...

Hi guys I am new to the xs650 owners elite. I have just got me an xs650 1978. I have taken it for one ride and prior to this I had a fiddle with the fuel shutoff valve under the tank just to familiarise myself before potentially running out of fuel. Anyway when I got back fuel was leaking out...

Encountered a larger problem when taking apart my carb for the second time and believed it deserved its own thread to try and figure out what to do with this thing.

I wanted to just share how I was able to solve the issues I was having that was causing gas to leak out of my carburetor when my petcocks were turned to on. I say petcocks because my 1978 XS650 w/ BS38s had two vacuum type petcocks. One on each side of the tank. I have come to the conclusion...

Summary at the bottom if too lazy to read. (Picture after heavy cleaning, picture credit: Akustaka) So I have a 1978 Yamaha XS 650 with an aftermarket magnet based charging system, to the best of my knowledge...

HI all, Bought 1st xs650 trying to get it road ready. It start easily cold (no choke) and idles well 1100 rpms, until warm and then shuts off. When I continue to kick it, it back fires out the left carb and pops the carb out of the boot. This has now happened twice in a row. Since I got it...

It took me a while to get my XS650 running right. With the help of everyone on this forum, luckily, I think I finally got her running the way she should be. With continuous changes to the carburetor, I finally think I figured out the perfect set up. First I adjusted my cam chain to spec, timing...

I have an 79xs650 bobber ive been building. I have pods and low backpressure exhaust. I had my left cylinder burning super hot, so i swapped the stock jets for 140 mains, now its still running super hot, but its black sooting now, so tomorrow ill raise the pilot jets up a bit. And lower the main...

okay so ive got the pwk carbs. Was wondering where i can get smaller needle jet and if anyone knew what the stock size is for the pwk(32) The problem im having is my bike runs to rich. If i snap the throttle open from idle it almost stalls out so im going to buy main jets and wanted to get...

I just bought it. Its a kickstart and its a custom hard tail. Cleaned carbs cleaned jets finally got it to a good idle changed both spark plugs also. It idles fine now but everytime i go to give it gas it sputters and backfires and such. I cant find a mark of what carbs it has but i think they...

I have a set of BS34's from what I was told was an '81, so they have the pull knob choke. They were completely redone by Rick West of OldSkoolCarbs back in 2012, but they have sat in the box ever since they were delivered. I never even got to ride them before I was forced off bikes due to my...

hey guys, ive seen a few photos so know its happened but has any one on here successfully run a weber carb on their XS? im thinking that or a single carb but love the look of a weber.

Thinking of making a 1-2 intake manifold for my xs. Anybody have any pros/cons about this? I'm curious if anyone's done it with a similar setup to my bike and how it ran/worked out. Spec: 80 xs650 750 bore Performance cam Pamco Hall effect HHB Pma

[/URL][/IMG][/URL][/IMG][/URL][/IMG]Reassembling BS38 carbs, if I snug down the nut at end of shaft with the throttle cable, the assembling binds up. If I leave it too lose (with locktite) will it leak air? Am I missing something (see attached) Also the idle screw isn't centered on the...

Yesterday I was rolling down the road when the RPMs on my bike started to climb a little higher than usual. At stop signs and such, when I had the clutch in, they went up to and stayed around 5000 RPMs. After a bit of investigation, I discovered that the little lever that the throttle cable...