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Thread: O2 Sensor Mount

  1. #1
    Eds_FZR's Avatar
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    O2 Sensor Mount

    O2 Sensor mount

    Did some testing yesterday .... only 2 to 3 miles with the rear seat off.
    Did not notice that my O2 sensor spate the bolt out.... until I took of the MX helmet.

    I fitted the base plate with orange lock tite ... now will add blue Lock Tite to the bolt and try and install a wire tie...

    Pic 1 is the O2 hole
    Pic 2 & 3 in the mirror shows the burnt cable sleeve surround and although the actual wire insulation is scorched it does not appear to have melted thru.

    What I would like to know is what function the yammie Rectifier / regulator performs. I know it has water lines to it as well as 6 or more wires that come from the stator and regulator.
    How would I know if it was not performing or buggered?
    I test rode the ski today and it seemed fine... acceleration was good but in rough water so could not check if it would rev to the usual 8250.

    Any help would be greatly appreciated.
    Can I leave it 'as is' or if it is crucial then I will order a new unit.

    Ed
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  2. #2
    It's surprising how much damage has occured from such a small hole in there.

    I'd appreciate any help on how to make sure mine doesnt fall out in future.

    I like the idea of the ties h'Ed but they may melt given the heat coming from inside

    Has anyone else had this happen? Thats twice I've heard of it now.

  3. #3

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    Ouch ED!! That could've been worse.

    By the mirror it looks like it's just the outer sheaf is melted and the wires and their individual sheafs look OK.

    Pull the reg out and take a closer pic to confirm.

    But it looks good to go if no wires are exposed.

    If they are I would use an acid free silastic to cover them or 5 minute Ardraldite. If you have to do this make sure no exposed wires are connecting.

    Otherwise, buy a new one.

    To test you should see 13.9 volts at the battery terminals when the motor is running. About 12 when not running or the reg is busted.

  4. #4
    nicjak's Avatar
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    he'd if you are worried about the bolt becoming loose again i would drill the head and wire tie it in fairly common issue

  5. #5
    Take the time to smile sirbreaksalot's Avatar
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    Quote Originally Posted by Eds_FZR View Post
    O2 Sensor mount

    Did some testing yesterday .... only 2 to 3 miles with the rear seat off.
    Did not notice that my O2 sensor spate the bolt out.... until I took of the MX helmet.

    I fitted the base plate with orange lock tite ... now will add blue Lock Tite to the bolt and try and install a wire tie...

    Pic 1 is the O2 hole
    Pic 2 & 3 in the mirror shows the burnt cable sleeve surround and although the actual wire insulation is scorched it does not appear to have melted thru.

    What I would like to know is what function the yammie Rectifier / regulator performs. I know it has water lines to it as well as 6 or more wires that come from the stator and regulator.
    How would I know if it was not performing or buggered?
    I test rode the ski today and it seemed fine... acceleration was good but in rough water so could not check if it would rev to the usual 8250.

    Any help would be greatly appreciated.
    Can I leave it 'as is' or if it is crucial then I will order a new unit.

    Ed
    If NO bare wires are show and the insulation is OK on each wire!

    I would just retape and recover with some new conduit and forget it even happened

    As long as the ski is charging the battery at atleast 12.9V+
    your charge rate will be more straight after starting as it tops the battery up,
    so you will see your charge rate go up as high as 13.5Volts possibly.
    If it does than I would say the rectifer/regulator is fine

    and as said either tighten the bung correctly next time or lock wire it so it cant come out

  6. #6
    I wanna go fast perk_1405's Avatar
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    Quote Originally Posted by nicjak View Post
    he'd if you are worried about the bolt becoming loose again i would drill the head and wire tie it in fairly common issue

    +1 use safety wire to keep it in place.

  7. #7
    Robert63's Avatar
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    o2 sensor

    I have a question what does everyone do when taking out the o2 sensor because they say not to keep them in do you take out the adapter or do you have a plug to go in the o2 sensor hole

  8. #8
    Eds_FZR's Avatar
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    Thanks everyone for all your help ....

    I will test the voltage as shown.... pull it out to check the wires...
    If it is ok then will reseal & refit.

    I like the wire tie idea for peace of mind....
    The bolt has is a big head to drill through... could I drill trough the bolt stem instead?

  9. #9
    nicjak's Avatar
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    hed dont know what type of bolt you are using but if you go through the "stem" as you say this would be in the threaded area use plenty of thread tape and drill through the hex head to tie it that is the correct way the bolt thread pitch does make them a problem fit.

  10. #10
    nicjak's Avatar
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    ah now i understand you used a bolt with a nut on as well to lock it in place good idea, should do the trick with thread tape and loctite. or get 18mm bung from an exhaust centre.

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