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Thread: Quick Question

  1. #1

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    Quick Question

    Let me ask my fellow polaris men a question......... On my 95 sl 750,looking at the left side where me carbs are is my low speed adjustment on the left or right side of my carb?


  2. #2
    polarispa's Avatar
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    This may help

  3. #3

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    Well had my ski out yesterday for four hours,and run great but,when im at a dead stop gas it,it bogs down but if i pull the choke out then let go of it it runs great! I have replaced my fuel lines from my fuel pump have a new fuel pump but have never installed it yet! anyone have any ideas im at a loss!?

  4. #4

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    Also it is running rich??What would be causing this?

  5. #5
    She likes the bike. But the ski gets her wet!!!! xlint89's Avatar
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    Low speed adj. are low on the carb, and are a "T". The high speed is the brass one at top of the carb. What do you mean you pull the choke out, then let go of it? If the choke being applied HELPS the take off, you most likely are running LEAN not rich.

  6. #6

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    Well if im setting on it,if I gas it it bogs,but if I pull the choke out then push it back in,then gas it takes takes off great. Does that sound like to you all??Also how im getting it is runing rich my plugs are oily looking when i take them out for inspection.

  7. #7
    I'm feeling naturally aspirated today pirate33's Avatar
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    Lomita, aka Slowmita
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    Guys on this model is there a fuel filter(screen) which could be blocked with debris and also is there a accelerator pump in this ski which could be not functioning. I know both of these had been problems for members with the newer domestics after I had a similar problem with my TX?

  8. #8
    no accel pump on these and yes there is a screen but the choke thing makes it sound like an adjustment issue

  9. #9
    Moderator beerdart's Avatar
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    Tuning Tips for Girls
    THANKS RANDY!!!

    Start with the screws set at 1 turn out, and tune with the tachometer for peak Rpm, then stop there and count the number of turns on the high speed screws. Write this down on a piece of paper.. Then turn the high speed screws in all the way and open them to 1/4 turn open. (Now you will be testing starts only, so no more big high rpm trips around the course). You are only turning in the high speeds to allow you to easily tune the low speeds.

    Now check the low speed screws and set them at 1 turn and do a practice start; To test the low speed setting pretend that you just jumped the start and you have to start with no holder. Hold the ski by yourself and hold as many Rpm as you can (don't blow it out first for testing) and then nail the throttle hard.... NO FARTHER THAN 50 KILOMETERS, as you are only testing the start response

    If it blubbers like a schoolgirl trying to guzzle a quart of beer, then it's too rich on the low speed screws..
    If it falls flat on the line (like someone punched you in the stomach).. It's too lean on the low speed screws.

    When you like the acceleration off the line, stop there and count the number of turns on the low speed screws. Write this down on a piece of paper.. Then re-set your high speed screw where they show the best peak Rpm earlier and try both a start and a peak Rpm run...
    It will probably "blubber" a little off the line... DO NOT turn in the low speed screws... Instead, go back out on the course and fine tune for peak Rpm again.. The blubbering off the line is caused by having too much fuel in the high speed circuit... Write down your new high speed setting on the piece of paper along with the best low speed setting that you found earlier, this will be your base-line carburetor settings.
    If the high or low speed screws are open more than 11/4 turns, then you need to swap to the next bigger jet.
    If the high or low speed screws are closed all the way, then you need to change to the next size smaller jet.


    *** If no matter what you try, it still won’t leave the line without falling on its face "lean bog"... Then try the next size lower pop-off spring in the carbs... Don't be afraid to try #95 or even #80 gram springs..

  10. #10
    She likes the bike. But the ski gets her wet!!!! xlint89's Avatar
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    I spoke with him on the phone, real nice guy. He seems to have a SL 780 F/A on it already. I asked him if he can find out what other mods were done to it. He had told me he fiddled with the low screws and were around 4 turns out!!!! Stock is 1/2 turn. But the F/A has me worried, the high speed screws still sounded like the limiter caps were still on.

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