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Carbs 102 The video

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  • #61
    Please refer back to post #51 at the top of the page. The "Barrel" that the needle goes through is what causes my question. The one end as it's shown in post #51 is the end that is "counterbored", and the other end is just "blunt"....no recessed counterbore. Measuring with a dial caliper the raised ridge is within a couple thousanths of an inch of being centered end-for-end. The outer diameter of the ends (either side of the raised shoulder) is also within a couple thousanths of being the same diameter. The part will fit into the carb body either way, going in under the emulsion tube and main jet. Either way it barely extends into the main bore/throat of the carb body. I think the previous owner of the poor running '06 600 Katana I recently bought and have been working on might have had the carbs apart and I'm not sure which way the "barrel" should go in. I can't find any reference....anywhere, even in the service manual. Does the "counterbored" end go in first, facing the bore of the carb, or should the "blunt" end go in first? Since the tapered needle on the carb slide rides in the opening it seems it would be slightly richer with the counterbored end facing the carb's bore, and leaner with the "blunt" end going in first.


    I'd rather get this right the first time so will say "Thank You!" in advance for clearing up the which end goes in first question.


    Lynn

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    • #62
      The counterbored end goes up.

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      • #63
        88 katana carbs

        New to the forum and sorry if this is not the place to post. My 88 katana is giving me HELL. only has 8k on it, bought it running and driving mint for 1000$. One day I went to start it and it runs but when given gas it stays at about 5-8k for a few seconds then slowly drops down. Put a carb rebuild kit in it, still doing the same thing (besides it finally stopped leaking gas). Bike idols fine, just doesn't wanna drop back down. Pulled the air box and started it and noticed the carbs on cylinder #1 was not going up, the other three were working fine. Also noticed in my travels that when the gas tank is on and secured the fuel line doesn't seem long enough and kinks up right out of the petcock. Bike is also being run with a fuel filter on the main line (how I got it). I can post a video of how it's running if possible. Any help is much appreciated as I'm about to put a free sign on it.

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        • #64
          arsenic....Thanks for the reply. After my last post I finally found something, after a lot of Google searching, that suggested that the counterbore went "up" into the carb bore. I'm pretty sure the previous owner had them "blunt" side up when I had the carbs apart the first time, so I flipped them this 2nd go around. It certainly runs better, but still not right. I think the next step is to sync the carbs with a set of vacuum gauges that I have. I HATE using them, with all of the needle flutter, but I guess I'll just have to tough it out and try to minimize the bouncing needles with the restrictor valves that are on the gauges. At about 4,000 RPM and above the engine is pretty smooth, but at lower, closer to idle RPM it gets really rough. This bike is somewhat of an "unknown commodity" at this point too, since I bought it in just barely running condition. I think a compression check and valve clearance check is in the cards too. It never ends, but sometime these kind of bikes end up giving a lot of satisfaction. That's the light at the end of the tunnel.

          Thanks

          Lynn

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          • #65
            Why don't you just buy a manometer that doesn't suck? Start your own thread. .
            Last edited by ZukiFred; 08-22-2016, 06:56 AM.

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            • #66
              I am trying to hook my carb hose up to my petcock how and were do all the (vac)go

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              • #67
                On the back of the petcock
                "I'm sorry, I didn't mean to upset you when I called you stupid. I thought you already knew..."
                spammer police
                USAF veteran
                If your a veteran, join the KR veterans group

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                • #68
                  Thank you for your videos steves.

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                  • #69
                    Carb problem

                    Can anybody help me my gsx600f katana is running on 122.5 main jets an air/fuel is 2an a half turns out is this good I have a 4into2into1 with a beowolf can standard airborne an filter

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                    • #70
                      Can't question the jet size but, Euro bikes A/F screws should be around 1.5 turns out.
                      "I'm sorry, I didn't mean to upset you when I called you stupid. I thought you already knew..."
                      spammer police
                      USAF veteran
                      If your a veteran, join the KR veterans group

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                      • #71
                        Hello to all, quick question, as you see by my finger there still something in the tube, does it stay there or it need to be removed? 2004 kat 750

                        Thank You

                        Last edited by Cougar; 05-09-2017, 01:43 AM.

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                        • #72
                          No, that doesn't come out.

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