carburetors

Hey guys, Need some help with my 80 xs. Bike starts and runs. The problem is that once you're in gear, any gear, the engine plateaus and all you get is the engine revving high (me accelerating). For example in first gear she'll accelerate to 10 mph then plateau. At this point I'll drop it...

Hey everyone, I just want some input on Mikes XS for petcock rebuild kits. I recently bought the carb rebuild kits and later found out that I needed to buy more parts to complete the rebuild process. Should I buy from Mikes or is there a better place to get the parts? Thanks, Dennis

OK guys... I've been in the process of building a '77 s650 with a '74 motor for about a year now... I've done a lot of frame work and have that all lined out as well as the suspension. The bike looks great and has a nice stance (in my opinion)! I'm experiencing a few issues however with...

Hey! What do you guys recommend for a fuel T on my BS34's? Mine leaks like a sieve, with a hole in it, that is cracked, and under high pressure. Well, OK, actually the fuel T just weeps fuel, but I want it to STOP! Plan to replace it and wondered if brass(?) or plastic(?) or what brand...

i just finished rebuilding my 80' xs650 a couple of months ago, this is my first build and bike and am new to all of this. First since i have had it finished the bike has ran great no problems. Then yesterday all of a sudden it died on me figure the battery had died. The screw to the negative...

I'm in the middle of rebuilding my Dad's old XS. It's a 79 special. I'm doing the Mike's 750cc big bore kit with Cams. I'm looking to see if anyone has done this with the Ninja 500 Carbs and, if so, what kind of jet setup did you do. Help/Advice, please@!

Just got the bike back from a shop where they cleaned the carbs and cleaned and lined the fuel tank. You can smell gas in the exhaust which normally means it is running rich. There is a small popping noise sometimes that almost sounds like air is being forced out. Would resetting the idle...

I see that I had a similar post about this problem last year. But I have not fixed the problem. 1976, stock, with stock BS38 carbs. My last compression check, done a year ago with warm engine and wide open throttle, was 145 right cylinder and 140 left. That said, the left cylinder has a...

I was taking apart my throttle shafts to replace the seals. However upon trying to remove the screws that hold the butterfly in, they stripped. And then to top it off the screw remover drilled itself through the side of the screw destroying the threaded hole. Now I need to replace the rod too...

Along with all of the other users that found out about long and short z-6 needle jets, I need help finding the short ones. I have a 1974 tx650a with mikuni Bs38 round slide carb. I have heard that z-8 needles can be used instead but i would like to hear from someone else on an experience. Thanks...

Looks like i got PO'd Stripped my BS34 and found the rubber jet pilot plugs are missing. Does anyone have the Yamaha part number for these i cant seem to find them and most part break downs are not very clear. Thanks

Hey guys, it's getting colder here in MN at the end of the riding season and i've noticed my bike has been popping on the right side a bit. I cleaned the carbs and messed with the air mix and that helped for a while. It's started again and i'll make a list of symptoms and changes i've made...

I am finishing up my 1980 XS650 bike build and the bike starts up and seems to idle fine. However, sometimes there is a sort of backfire through the carb. Also, when riding it seems like there is a lot of vibration to the point my vision is blurred and the bike, although responsive, doesn't...

Just finished my pma swap. Pre-swap: the bike ran well, but wouldn't charge. I would never have to turn petcock to prime, it always started when in the on position. I believe the bike has an aftermarket petcock as it only has reserve, prime, and on positions. There was no vacuum line...

XS650 Carburetor Metalurgy ...or... "What is this mystery potmetal" I've seen this question occasionally, "What casting metal is my carb?". This can be important to know, if considering aggressive cleaning agents, or fixable repairs. Without doing extensive chemical tests, it's possible to...

ok guys bare with me. gotta 72 xs650 i chopped. hasnt run in a couple year just because i just havnt fooled with it.. it ran when i parked it. put everything back together the other night first kick and BOOM fired right up. got some gas coming out of the throat holes. everything is good but i...

Hi All, I wanted to post to get some feedback in regards to the crankcase breather hose. I am having a hard time finding space to run this behind my carbs, and I am now running the hose in front of the carbs and not able to get the split hoses back into my stock air box. Does anyone have a...

i dont know where the drian line from the carbs goes to could someone send me a pic of that :( that would be great

I have this problem with my bike(79special), I'll ride for about 40 mins fine, than all of the sudden it will start running rough. It will act like its running out of gas but it has plenty of gas. it will sputter for about a minute then die.I'll let it sit for a few minutes and try starting. it...

pls help meh im trying to fix a xs650 but i dont know where the tubes go could someone pls send me a pic of both sides of their bikes engine and carbs pls :(