GSX-R 750 Pictures of how I cleaned and adjusted the carburetors on my 1985 1986 1987 Suzuki GSX-R750 motorcycle.

But first, lets pay some bills:

  1. I open up the float bowl, and here is what is inside. OK, now I need some graphs and charts with circles and arrows. Stay with me.
    1. Pilot Screw
    2. Starter Jet
    3. Pilot Jet
    4. Main Jet
    5. Needle Jet
    6. Float
    7. Float Needle
    8. Float Pivot
    Carburetor parts

  2. View of an exploded carburetor. Exploded view of a carburetor. What all do we have here. Left to right:
    1. Needle Valve
    2. Retaining Screw
    3. Floats
    4. Float Needle
    5. Pilot Screw O Ring
    6. Pilot Screw Washer
    7. Pilot Screw Spring
    8. Pilot Screw
    9. Pilot Jet
    10. Main Jet Washer
    11. Main Jet
    12. Float Bowl
    13. Float Bowl Gasket
    14. Float Bowl Drain Screw

  3. Here is the carburetor top cap off, revealing the diaphragm. The diaphragm is connected to the slide, held down by the spring, and there is a jet needle down there under the spring. Oops, didn't get a shot of the Pilot air jet. Sorry. It's under the diaphragm. I swear.

  4. The Jet needle, with the spacers and clips and whatnot, in the right order. Thick washer, e-clip, metal washer, spring seat. I have the metal washer and spring seat on an ice pick for instllation.
    Jet Needle

  5. To install the jet needle, I dropped the jet needle, with thick washer and e-clip attached, into the center of the diaphragm. Then I put the spring onto the ice pick and held it back. Then I put the metal washer and spring seat onto the ice pick, and carefully loaded the washer and seat onto the top of the jet needle, then slowly released the spring to hold them in place. So easy a highly skilled neurosurgeon could do it.
    Jet needle installation

  6. Next I sold out to make 02ยข so I can fulfill my lifelong dream of owning a 1986 944 with blown head gaskets.

    But no minivans!

  7. Then I finished my beer.

All 5 pages dissecting carbs:

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Think: Cars are expensive, powerful, and heavy.   Before I start work, I face the possibility that I will destroy my vehicle, my own life, and innocent pedestrians' lives.   If anyone messes with a 4000 lb machine capable of 100 mph, these are real possibilities.   If I get in over my head, I call a professional mechanic.   The information on this website is provided only for entertainment purposes, and it is not intended as advice on how to service a vehicle.   For all you know I made this up.   Don`t believe everything you read on the internet.

Disclaimer: The technical information in these documents is provided without any warranty whatsoever and at no cost.   All information is in general terms and is not meant to apply to your particular situation, be current at the time you read it, or even be correct in the first place.   Improperly maintained vehicles can lead to serious injury, death, or unavoidable accidents. The author is not responsible for any errors on this site, and does not make any claim at all about the validity, safety, or veracity of the information contained on this website. Any work you choose to do or not to do on your vehicle is done at your own risk. The information on this site is not intended to serve as a replacement for professional advice, professional workmanship, dealer service, union labor, or psychological counseling.   The author disclaims any and all liability directly or indirectly arising from the application or use of any information or idea contained on this or any other web site.   By opening this page, you agree to never sue anyone ever or allow anyone to be sued on your behalf.   The appropriate professional should be consulted regarding your specific condition. does not take responsibility for the information posted on other sites to which it links.

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