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Hello Everyone, So I own a 1975 XS 650 and I have new mikuni Vm34's that have been rejetted I have basically rebuilt everything on it. Its been running great I have been ripping around on it for 2 months about 3 to 4 times a week. I took a 30 mile ride with some friends and we were getting on...

Alright So I got my Vm34's on my 75 XS 650 and finally got my jetting down runs great so much faster more power! I do have an idle screw issue on the left carb, when ever I unscrew the idle screw there is absolutely:yikes: no change in idle, I even took it all the way out and no change. I know...

Hi Everyone, SO I bought some new Mikuni VM34's got them on my bike started up first try runs pretty well except at full throttle get a little choppy I expect my mains need to be a bit bigger? Here is what I re-jetted to what are everyones thoughts on the stock needle jet with the Mikunis...

I have a quick question here. I just bought some Mikuni VM34's and I also got some aluminum intake manifolds. I have always used the rubber ones but got tired of swapping them out so I up graded. On the rubber ones there is always a gasket between the intake boot and the intake valve on the...

Hello, So I have been a bit perplexed I have been riding my bike around for the last few months and its running great. I rode my bike to work today and came out to go home and the battery is dead ( this same thing happened about a month ago). I am positive I didn't leave the ignition switch...

So I just have a fairly quick question. I own a 75 xs 650 I am running stock carbs (mikuni bs 38s) I just bought some new mikuni vm34. I am wondering if my current manifold intake boots will fit on the vm 34s. I just got those boots last season they are pretty new and holy shit manifold intake...

So I have a question here I own a 75 XS 650 and the front end use to always shake at like a stoplight pretty normal for these bikes. I just noticed today that it doesn't do that anymore ( which is nice cause my brakes use to rattle a lot) so now there is really no shake at the front end what...

Hey all! So I have a 75 Xs650 and I need to get new carbs these things are on their last legs and this year I'm just gonna get new ones. Seems like Mikes XS sells a lot of really cheap parts does any one know where to get a good set of affordable carbs for my XS?:thumbsup:

So I've been checking the timing on my bike and the timing light isn't working. I know that it actually works as it was flickering for a second and I used it last week. It would only turn on at a higher idle so I set my timing that way seems fine. I do want to recheck it and I tried and the damn...

I have a 1975 XS 650 and I saw a post on here about advance springs. There was a video showing how the the unit should snap back mine did not snap back. So I took off the springs and the weights cleaned everything then I clipped the springs put everything back together and it snaps back as it...

Hello I'm getting ready to make a manometer I have the jist of it and I know what I need to get. Now this may sound like a dumb question but I have never hooked one of these up and I searched on the site but I couldn't find where to connect the clear tubing on the carb. I have a 1975 xs with...

So I have a question I want to buy some new Mikuni's for my bike I'm tired of messing with my carbs plus they are really beat up. I own a 1975 XS650 and I'm pretty sure that I need Mikuni VM 34mm. Does any one know of a reputable place where I can get good set of carbs ata good price? I'm...

Hello, So I have a 1975 XS650 and I have been messing with carbs a little too much I think. I started out by changing my needle position not really sure why, I think I had tried everything else but that. So the clip is in the center where it used to be was 1 slot below the center. Now I have...

Hello, So I have been tuning my bike (1975 XS650) for a few weeks now, I cleaned the carbs (original carbs) set the cam chain tensioner,valves,timing all of that. Had it running the best I have ever had it although setting the fuel screw never seemed to get it perfect. Then I was out riding...

Hi Everyone, So I just tuned up my 1975 XS650 cam chain tensioner,valves,timing and carbs and I notice the left cylinder seems to be running a little stronger than the right. I can't tell when riding it the bike fells great. Now there maybe a simple answer to this question. When I put my...

Hello, So I have a 1975 XS650 and I have been jacking around with the timing. I first checked my valve clearances and there were a couple that were off, then I gapped my points and moved on to the timing. Started with the right side made sure I was in the compression stroke piston was at TDC...

Hey just want to share my rebuild. I tore out the motor rebuilt top and bottom end and returned my bike to the classic look. I went from original turned it into a street tracker now going back to the old school look. Should be on the road in a few days (waiting on a banjo bolt I broke off from...

I rebuilt my 75 xs. 650. and just took it out last night For the first time. Seems to run good there are a few issues. I heard a noise that seem to be near the oil filter On the crank case. I'm assuming it's an oil pump issue any Suggestions on trouble shooting to confirm my suspicion? It...

Hello I have never used a timing light but correct me if I Am wrong here. Connect light to battery connect right plug Wire to light. Start engine point gun at timing mark on Rotor should be in between the 2 F marks. Move plate Forward to advance or counter clock wise to retard. Go to left...

Hello, I just wanted to say this forum is pretty great I gotten a lot of help here and well I need a little more. So here is the issue, I just rebuilt my entire motor (75 XS 650) bottom and top end. The motor is in the bike everything is looking good. Getting it started seems to be a major...