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VM26SS Carbs

  • Thread starter Thread starter mike1414
  • Start date Start date
Hannibal, thank you for posting that. I could not remember the site nor the member's name that runs the site, so now I can bookmark that for all my future needs. And, Geol, you have been TREMENDOUSLY helpful with all of your explanations and imparting your knowledge. You deserve to have yourself a nice cold beer and relish in your ability to translate your wisdom into helpful tips and explanations. I'm gonna look around the forum and web for some carbs, and in the meantime tinker with mine and see if I can't get this thing on the road again.
 
Just an update in case anyone has been following - I ordered a pair of Kawi VM carbs and first off, no leaks! That's a huge plus, of course. I got the rack for about $115. They came with a 122.5 main and 17.5 pilot jet. I switched them out to my old 117.5 and 15's, but it ran too lean. I now plugged back in the 122.5/17.5 combo, and it seems like it's a bit too rich with slight white smoke from the exhaust and bogging in the first 1/4 throttle, but I think I may plug the 15 pilots back in and play around a bit and see what I can make work. The Kawi carbs came without the spring on the throttle stop, but I installed one, still idles at 2200 though. So, I figure a little tinkering with the jetting and the throttle return and I should be good to go! Thanks to all that have helped over the last few months.
 
Glad to hear! Where'd you find the carbs?

Do the Kawi carbs have an idle adjustment screw like the "regular" Suzuki VM carbs?
 
Got a set off of eBay. I had a couple in mind, but this set looked best. The Kawasaki idle adjustment screw is just on the top of the carbs as compared to the Suzuki on the bottom. So after messing with it, the bike ran, but still rich. So once I adjust my pilot jet, it should fix the hanging RPMs and throttle bogging I'd assume. Hoping for some luck here finally!
 
So I know that it isn't necessarily along with the topic of the forum, but anyone any ideas on jetting? I have the #122 main in there which seems to be needed, but put the #15 pilots in there because the #17.5's didn't work particularly well, but with the #15's in there it still runs very rich. It runs well with the choke on, but with the choke off, it doesn't throttle (just bogs down). I'm trying to go along with this guidance, but can anyone give me a general idea of how to go forward?

 
Stock pilot jet is 15 so it shouldn't be rich. The fact that it idles better with the choke on suggests its lean. What are your fuel and air screws set at?
 
See I thought that would indicate more that it's lean, but it's blowing white smoke and smells of gas. Throttle hangs and bogs in the first 1/4 choke. I don't appear to have air screws, but my fuel screws I set out anywhere from 1/2 - 2 turns out. The 17.5 pilot jets seemed to work, but it still seemed to run quite rich and it wouldn't run at all with the choke, still spitting white smoke with throttle and bogging the first 1/4 turn.
 
Correct. Started at 1/2 turn out on the fuel screws, worked my way up to 2 turns out. But, as you alluded, Hannibal, despite what I thought I've read over the years, I guess some of my knowledge is off. After reading through the Randakk's blog post (http://www.randakksblog.com/lean-vs-rich/) I guess my situation is much more lean than rich despite the smell. Always thought hard start, hanging idle, throttle bogging and smoke were indications of lean. But apparently my information has been incorrect. So maybe I'll just try some #20 pilot jets and go from there as well as get some fresh spark plugs to help me assess the clndition
 
The advice I received was to set the fuel screws at 7/8 turns out. After that, don't touch the fuel screws and make adjustments with the air/mixture screws. But if you don't have air screws, I'm not sure how you're supposed to adjust the mixture.

You have a picture? I don't know much about carbs, but maybe the gurus will see something.
 
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