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  1. #1
    Bflynfree's Avatar
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    Question I'im new and i need your help please

    i bought a 94 sl 750 w/ trailer for $100 pretty good deal i think but i need some help from you guys
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    we put premix in it 50:1 and a battery and she started right up went down to home depot bought some pvc and hooked up to what i think is the water manifold I hope any way. problem is i just found out it has a oil tank full of old oil hadnt been started since 99 the guy that owned it died so i just went off what i could find on the net saw somewhere that you run 50:1 in these but now that i saw the oil tank im thinking that it is oil injected i am worried now tho i thought since it was a 2 stroke it took pre mix is this true. ive looked threw bing and greenhulk im getting nothing please help am i going to foul out out my plugs? she runs good, tho a bit shaky needs an oil change how do i do that?


  2. #2
    wotxxxsd's Avatar
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    The oil pumps are notorious for failing and destroying the motor.
    You should premix your fuel and block off the oil pump.
    You don't change oil in 2 strokes. 4 strokes change oil.
    Hope this helps.

  3. #3
    I transcend race Hombre! TBone14's Avatar
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    Actually, Polaris oil pumps are known to be very reliable - personal preference on whether to run premix or not. If it has been sitting for a while do all of the recommended fuel system upgrades (rebuild carbs trip outlet fuel pump - new fuel lines).

  4. #4
    Bflynfree's Avatar
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  5. #5
    johnsonmtz's Avatar
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    Quote Originally Posted by wotxxxsd View Post
    The oil pumps are notorious for failing and destroying the motor.
    Not true. The Mikuni pumps on these motors are very reliable. The tubing can fail leading to leaks and oil starvation. HOWEVER, if it is properly maintained this should be a complete non-issue.

    BFlynFree,
    If this ski has sat for 13 years, you'll have to do some TLC to avoid engine damage.

    1) Replace all fuel and oil hoses. This stuff will be brittle or mushy from all the years of exposure.
    2) Drain the oil tank and replace with fresh oil
    3) Drain gas tank and replace with fresh fuel
    4) Disassemble the carburetors, clean them, and install new Mikuni kits.
    5) Disassemble, clean, and/or replace the fuel shutoff switch
    6) Replace the OEM single outlet fuel pump with a Mikuni 3-outlet pump.

    I would give this exact same advice for a 1994 PWC from any manufacturer. If you don't know the service history it's best to assume nothing has ever been done and perform ALL of the routine maintenance. With that done, you'll know you're starting with everything fresh.

  6. #6
    Bflynfree's Avatar
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    Thank you

  7. #7
    Yes I agree totally with what everyone is saying here, oil pumps on these skis are totally reliable, there lines werent. I deleted mine just because I prefer to have one less possible thing to go wrong but if you have yours on with good lines and check them every year I think you will be fine, yes if your running pre mix and the pump it is to much. If I were you I wouldnt take this thing to the water again until to you perform all the recommended upgrades otherwise your risking possible damage. You only paid $100 for the ski so your looking at about another $300 tops to get it going, $400 bucks and your got a great ski

    Read this and also I would order a clymer manual for your ski it proved invaluable to me when working on mine.

    https://sites.google.com/site/polari...is-fuji-engine

  8. #8
    jackofalltrades's Avatar
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    Welcome to the Hulk. These guys will take care of you.

  9. #9
    I transcend race Hombre! TBone14's Avatar
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    Search around the link in Nick's post - shop manuals are in there - FOR FREE!

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