carburetors

What do most set the idle speed at on a bone stock '75 XS650?

The bike is a rebuild stock bore 650. New piston rings. It has K&n open pod filters as well as pandemonium's yo momma free flowing open exhaust. I am running the stock bs34's carbs. Can anyone give me a good starting point for tuneing this motor. I have only done one heat cycle and only...

:) hey guys had a quick look around and didn't see an answer, didn't find one in my manual either. I bought some new fuel cocks and assorted needed gaskets for my '73 TX and after a period of non activity (recently repaired rotator cuff) I can get at it. Here's the thing, I removed the old...

Can someone that has a 78 post a picture for me of the location of the plug that covers the mixture screw that you have to drill out ? Thanks

Right cylinder has a misfire at idle and a large amount of backfiring when downshifting, cleaned the jetts on both carbs 3 times now starting to think thats not the issue... im running a heiden dyno jett kit, pods,and cut pipes on stock 81 special carbs. Bike runs fine otherwise it seems...

Those stock air boxes on a '75 XS are strange and a pain! Do you get any better performance with the PODs on a stock XS650? Different jeting needed to run them?

TX750, stock BS-38 carbs and jetting, exhaust, intakes. On the last two tanks of fuel I've noticed the engine wants to idle around 3500 rpm as the tank gets to the reserve change over level. Once it's switched over to reserve the idle returns to normal. The engine starts and runs fine when the...

I just purchased a set of chrome exhaust headers (single wall pipes) from Mikes and *Commando* 26 inch mufflers. I need to know if I will have to rejet the carbs or will I be able to stay with the stock setup ?:shrug:

have a set of almost new knock off vm34s (bought and installed by p.o.) he changed the jetting and now runs incredibly rich (bike has never been on road ...project that I finished) stock motor.anyone know what these came originally jetted as so I can use that as a starting point

Hi, noob here. Just purchased my first bike a '78 xs650 special. & of course it needs carb work done, so that is the first thing I am doing to it. I am going to be doing a carb rebuild, petcock replacement, & add some Uni pod filters. My question is does anyone have some knowledge of these 6...

I found the following thread that definitely relates to the problem I'm having with my '76: http://www.xs650.com/forum/showthread.php?t=30627&highlight=left+cylinder+cold I'm posting this because my carbs are BS 38, while the above thread applies to BS 34 carbs. The intermittent firing from...

just wondering who supplys the best carb inlets for the vm34s nowdays (with pods not airbox)

i've been working on my 1977 yamaha xs 650 and had it running many times before and it used to run good. i recently just put new coils and a TC bros chopper wiring harness on it with a solid state regulator/ rectifier made by Procom engineering. it still has spark even after i put these...

Are these plastic screws simply covers or what exactly am I missing? Given the tab they have they only turn between about 8 and 4 o'clock.

Okay so I have been discussing, searching, and troubleshooting my bike for almost a month now. The problem is, gas leaking into my air filter and over rev. I have been given many tips and tried them all! Tips from users here and from my mechanic. I've rebuilt my petcock, rebuilt my carbs...

so the carbs i have a the single throttle BS38s trying to rebuild and one of the fuel intake nipples is missing i have read about guys just running one because there is a fuel line that runs between carbs to fuel both.....and they just JB weld one of them shut...has anyone done this with success...

Ok guys I'm new here and new to the xs650s. This is my first one so I've been doing some reading here and had a quick question Basically I was given the bike and it's been sitting for at least 10 to 15 years. I pulled the carbs off and have them soaking in a parts cleaner. From what...

I have a couple of issues with the air boxes on my stock '81 XS650 Special... I'm missing the hardware that connects the boxes to the frame near the battery box (on the top) and on the lower tab of the boxes as well as the washer that goes on the pan head screw to keep the cover on. Does...

My 1979 special has two vacuum petcocks, one for each carb. If I put the petcock on prime to run the bike, can I pull the vacuum hoses off the barbs on the carb holders and connect my manometer to those?

Swapped my 38s for a set of VM34. Everything was running before, however I was running VERY rich with the 38s. 34s are setup as such: 159p6 needle jet 6f9 needle 3rd clip 25 pilot 180 main .905"/23mm float level 5/32" slide level I cannot get the bike to start now. I haven't checked the...