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  1. #1381
    A member here text me that I am still running lean. He recommends me going up on the main jets 5 sizes. I assume he means from 165 to 170. Does anyone know the exact main jet these carbs use? I found this chart but I am not exactly sure which model is correct: https://www.keihin-na.com/assets/1/7/jetlist.pdf

    I believe they are N424-36 since it says CDK, CDKII (Jet Ski). It also might be N424-27 since the carbs are CDCV 40's.


  2. #1382
    I was winterizing my ski for the winter and ran into a few random issues. Most of the issues were just me dropping parts into the abyss. I had to remove the seat latch/grab handle because one of the air intake hoses had snapped off its mount. I figured removing the handle to reinstall the pop rivet air intake hoses was the best way to do it. Removing that grab handle isn't terribly difficult but trying to get it reinstalled with the washers and nuts was very challenging. I ended up dropping the main seat latch's 13mm nut and the washer. I spent a very long time looking for it in the abyss but I was unsuccessful. I did find some other random parts though. I found two brass pieces that I have no idea what they belong to. Maybe they have noting to do with the ski and they are lost parts from a prior owner. I figured I would ask here for some insight. The picture isn't the best but you get the idea. They are flat on the bottom and smooth inside. Not threaded. I have no idea what they could possibly go to. The abyss of a jet ski definitely keeps some odd stuff!

    Also when I was removing the airbox so I could spray fogging oil in the carbs I noticed the two tabs in the air box ring of each carb are facing the bottom of the carbs. The carbs have a cutout on top but the opening in the airbox rings is at the bottom. Since the cutouts in the airbox don't match up, 180 degrees out, I figured I would ask if that is normal? I assume it is but I figured I would ask anyways. I assume this is the way it is suppose to be and part of the reason why the airbox works as a flame arrestor.
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  3. #1383
    steve45's Avatar
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    The brass tabs are some sort of adaptors that come packaged with a new battery. Not sure what they are used for.

    The cutouts on the rubber seals should face the exhaust pipe. Your's are backwards.

  4. #1384
    Quote Originally Posted by steve45 View Post
    The brass tabs are some sort of adaptors that come packaged with a new battery. Not sure what they are used for.

    The cutouts on the rubber seals should face the exhaust pipe. Your's are backwards.
    So the cutouts that are now at 6 o'clock should be at 12 o'clock correct? I am not sure what you mean by "should face the exhaust pipe".

  5. #1385
    steve45's Avatar
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  6. #1386
    I just looked it up in the manual and it appears that mine are installed properly with the slits at the bottom. It appears they only go in one way. I am going to finish winterizing the ski tomorrow. I will take a closer look then.

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  7. #1387
    Click avatar for tech links/info K447's Avatar
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    Quote Originally Posted by steve45 View Post
    The brass tabs are some sort of adaptors that come packaged with a new battery. Not sure what they are used for.

    ...
    Deka ETX series AGM batteries have dual axis battery posts. Bolts into the top of each post are normal.

    If using the side access holes on the battery posts then those brass D shaped spacers are needed to allow the cable end to clamp flat with the bolt.

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  8. #1388
    Quote Originally Posted by K447 View Post
    Deka ETX series AGM batteries have dual axis battery posts. Bolts into the top of each post are normal.

    If using the side access holes on the battery posts then those brass D shaped spacers are needed to allow the cable end to clamp flat with the bolt.

    That is definitely what they are. Thanks!

  9. #1389
    I took it apart today. The two cut outs definitely belong at the bottom. There is a tab inside the airbox and a cutout in the rubber part to keep it in that position. The top of the airbox does not have that tab so it can't be installed wrong basically.
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  10. #1390
    steve45's Avatar
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    That's interesting. I don't think I've ever taken my airbox apart. Guess I'll have to. My nephew is rebuilding his 150 engine, maybe I can take a look at that this week.

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