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VM26SS Carbs

  • Thread starter Thread starter mike1414
  • Start date Start date
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mike1414

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I have searched the internet until my eyes have dried out and my finger tips bled, but I cannot find a diagram for the VM26SS carb. I have been trying to diagnose the issue, and I honestly am unsure if a pilot jet is used in the carbs, because I don't think I have one if so.



To where I am pointing is where I feel like a jet "should" be. Can anyone confirm this? Feel like an idiot for posting this, but I can't find a diagram anywhere!
 
Should be PILOT screws on those holes...heres a link to new ones.

http://www.siriusconinc.com/pro-detail.php?pid=&product_id=4245

And heres a link to a members website at which he sells the rebuild orings and intake manifold orings. 1 kit does all 4 carbs. No need to go buying anything other than some carb dip, carb spray, a oring kit, and follow the rebuild tutorial. Bench sync them and the bike will start right up and be ready for the vacuum gauges.

http://cycleorings.com/

Get the Berrymans Crab and Parts Dip at Walmart in the automotive section.
 
The BIG jet in the center tower is the MAIN JET and the little one beside it is the PILOT JET.
 
Chuck, I can't believe you found that; I honestly think I went 8 Google pages deep looking for a diagram. I thought that was the pilot, but was unsure, honestly. The hole to which I am pointing, is anything used there? I went totally through the cleaning and rebuilding tutorial and let the carbs soak in Berryman's for about 48 hours. I got new main jets, and new pilot jets; I just figured that something should go in those holes to which I am pointing. I know that was a very confusing point I made, but nonetheless, I have the small jets beside the mains (which I believe you are saying are the pilots) totally screwed in which is clearly off if they are the pilots.
 
mike1414 said:
Chuck, I can't believe you found that; I honestly think I went 8 Google pages deep looking for a diagram. I thought that was the pilot, but was unsure, honestly. The hole to which I am pointing, is anything used there? I went totally through the cleaning and rebuilding tutorial and let the carbs soak in Berryman's for about 48 hours. I got new main jets, and new pilot jets; I just figured that something should go in those holes to which I am pointing. I know that was a very confusing point I made, but nonetheless, I have the small jets beside the mains (which I believe you are saying are the pilots) totally screwed in which is clearly off if they are the pilots.
Click to expand...

The pilot jet (bleeder) like the main jet, should be screwed all the way in. The pilot circuit is controlled by the screws you are missing.
 
See post #3.......you are missing PILOT screws...NOT pilot JETS. Two different items with the word PILOT in them. See the fiche i posted. There are springs that go onn the screws as well.

Click on SUZUKI on the home page here and follow the prompts for all the different parts fiches for the bike you have.

http://www.partsoutlaw.com/
 
Ah, Chuck and John, I see. I missed that. I see now that I should have the pilot screws. Purchase made today and I will have her back on the road. I appreciate the input, and graciously appreciate the diagram. You guys, as always, are saviors.
 
Set the screws at around 7/8 of a turn out from GENTLY seated. by gently , we mean this..turn them in slowly and easily. When they want to stop turning DO NOT force them any further,, Make a witness mark on the rim of the hole inline with the slot and turn them out the 7/8. Conventional wisdom and findings here say the factory set them at approximately 3/4 turn out but they were a tad lean to satisfy the US EPA specs back then. At 7/8 your assured good fuel and less a chance of being too lean.
 
Alright, all. So as recommend I purchased these pilot screws from the link below, they came via USPS after two days, and I went to work. Unfortunately, when trying to make them work, they would not screw into my carbs. I tried two different screws on all 4 ports, but they did not screw in. Just to be sure, these are the screws that I'm referencing:







and the port in which I tried to screw them are the ports to which I'm pointing below. This shouldn't make sense, right? My carbs definitely seem to be VM26SS carbs that have been totally cleaned according to the step-by-step instructions on the forum. Any input or suggestions? Is the world just against me?
 
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If anyone has any input, I'd love to hear it! These same screws are sold by both Z1 and SiriusSonic so I know that they are the correctly recommended screws. My carbs certainly seem to be the VM26SS, but the screws seem too long to fit. When I put it in, the screw stops before the threads are even able to catch, and when I look into the hole, it just seems too shallow. Love to get some feedback.
 
Mike, Are these carbs on your 550? The 550 should have VM22's. So did you buy a kit for your bike model or for the VM26's?

Just looked up the part you purchased from Z1 - sure says it fits! So if they are on your 550, maybe your carbs are VM22's.
 
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Nope, they are on my 750 which is why I am so perplexed. I checked it against everything that I read for the VM26SS carbs, so I don't understand why they aren't fitting unless these carbs are not actually VM26SS. I tried two different screws in each of the holes. Unless I am stupid, referring back to my original picture of the inner aspect of the carb bowls, I am trying to put the pilot screws into the holes to which I'm pointing. I don't understand!
 
Can you see through the hole where you're trying to fit the screws ? Typically the tips of those screws are broken off by a PO.
You may have a carb set with a full complement of screw tips stuck in place....
 
Yes I took a flashlight and looked in each one, and it is clean through and through. Just looks like a shallow hole into which these needles will not go. If my needles are, let's say about 1.25" long, the hole seems to be about 1" - just enough to fit my needle tip in to the threads, but not deep enough for the threads to catch. Honestly, when looking in there, there doesn't even seem to be ability for the threads to take hold.

This may not be very helpful at all, but I want to provide the best information that I can, obviously. But this is the inside of the pilot screw hole. Doesn't seem like there is anywhere to catch the threads, and just seems very shallow.

 
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But the hole doesn't go through to the carb throat...
What you've got looks like a set of VM's I have here which does not use the pilot fuel screws - at all. The holes are just left blank.
The VM26's on GS1000's sold here in NZ didn't have the pilot fuel screws either.
Whether they are used may well be market specific. Try them as is and see what it's like.
 
Greg that's what it seemed like to me, but I don't know what the fuel screws do, so I was at a loss. What do these fuel screws do exactly?
 
John initially the bike just cut off as I was riding one day. It had been running ok when I first got it, then began after a month running relatively oddly, almost like not enough fuel was being supplied, but didn't smell lean or anything. The throttle response was inadequate, and it was bogging down on me by this time. I came to a stop light, it cut off even though I was holding onto the throttle, and it wouldn't start back. Naturally per these old bikes, I pulled the carbs and cleaned them per the writeup, and it starts and runs now with the airscrews at 1.5 turns, and though I haven't fully synced the carbs yet, something still seems off despite my bench sync, so I figured I'd look into this extra space.
 
Pull the fuel line off the carbs and run it into a container. Try the tap in it's various positions, checking that flow is good - and continues.
Try with and without the fuel tank cap on...What you describe sounds more like a fuel blockage than anything else.
Pull the tap off the tank and clean the internal filter too.
 
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