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  1. #1

    Polarias SLT700 wont run after stator change

    Hi All
    I lost spark on my SLT700, turned out to be the triggers on the stator. I had a spare stator from a ski I use for parts. I now have good compression (120 both) good spark and I see fuel going into the carbs when hit the throttle. I got it to run and backfire just once but now the thing just wont start. I even had a look at the timing adjustment screws on the flywheel to make sure I didnt upset the timing and they seem to be right where they were. I am usually pretty good at getting stuff running but this one is beating me up. Any ideas? All I can think is timing because fuel spark and compression should = me on the lake. Dumb question but the longest spark plug lead does go to the front plug, right??
    Thanks


  2. #2
    Click avatar for tech links/info, donation request K447's Avatar
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    Check that the flywheel has not spun on the crank snout and sheared the woodruff key.

    Spark with incorrect timing means engine does not run.

    Note that Polaris uses woodruff keys made from stronger metal that the typical lawn mower grade key.

  3. #3
    I checked that key and it is OK. I was able to get it to fire once again but it ran really rough. After that I couldnt start it. It does seem to be a timing issue? The only other thing i can think of is week spark, maybe. Do you normally have to adjust timing if you replace a stator? I would not have thought so.

  4. #4
    Click avatar for tech links/info, donation request K447's Avatar
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    Quote Originally Posted by Coombez View Post
    I checked that key and it is OK.

    I was able to get it to fire once again but it ran really rough. After that I couldnt start it.

    It does seem to be a timing issue?

    The only other thing i can think of is week spark, maybe.

    Do you normally have to adjust timing if you replace a stator? I would not have thought so.
    Changing the stator can affect timing, but normally not enough to prevent the engine from running.

    Timing should always be checked with a timing light (or at least a static timing check) when changing either stator or CDI.

    Did you confirm correct alignment of the replacement stator before tightening the mounting bolts?

    You can check static timing with a simple 9-volt battery and ohm meter test. Same test arrangement as used when testing the Hall Effect sensors. Just note the exact piston position or flywheel degrees when the resistance first drops from very high to very low. That is the static timing position. Check both sensors for correct advance.

    See my signature links for how to do the Hall Effect sensor tests.

    Question: Is this an original or an updated ignition system?
    Last edited by K447; 07-15-2012 at 01:23 PM. Reason: Better wording

  5. #5
    Thanks for that, I didn't think to do the hall effect test to check my timing but I think I know how to do it. If I understand you correctly the resitance should drop right around 18degs +/-2.

    The stator had just 3 screw holes oriented in a way that you could not get it wrong so I am not sure what you meant about aligning it to the seam. It did feel like it was seated correctly.

    I am off to have another look though.

  6. #6
    Click avatar for tech links/info, donation request K447's Avatar
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    Static timing is much earlier in degrees than dynamic (running) timing. Check the official service manual specifications for static timing on your engine and ignition system version.

  7. #7
    I couldnt find any reference to static timing in my manual other than the section where it says 0.081 btdc = 18 degrees. I have scribe marks 0-20 on my flywheel. Is there a certain mark I should be on as the sensor for the front cyl switches to low resistance?

  8. #8
    Click avatar for tech links/info, donation request K447's Avatar
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    Quote Originally Posted by K447 View Post
    ...
    Question: Is this an original or an updated ignition system?
    ?

  9. #9
    it is an original sytem.

  10. #10
    Click avatar for tech links/info, donation request K447's Avatar
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    Quote Originally Posted by Coombez View Post
    it is an original sytem.
    I do not have the service manual handy for the original ignitions.

    Perhaps someone else can post the static timing info for your engine.

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