Page 1 of 2 12 LastLast
Results 1 to 10 of 13
  1. #1
    hbernier's Avatar
    Join Date
    Jun 2013
    Location
    Quebec, Canada
    Posts
    132
    +1
    2

    Stupid mistake - SL650 battery polarity reversed, now no spark

    Today I undertook to dewinterize my SL650 Polaris jetski.

    In my hurry to proceed, I hook up the battery in reverse polarity. I was so mad about myself. I've been riding it for many years winterize it and dewinterize it without problem. And now that stupid mistake !

    The starter seems to be OK, but no sparks on any of the sparkplugs.

    Did I fry the CDI?

    Is there some protection fuse in there ?

    Any help will be appreciated.
    Thanks
    Last edited by K447; 05-22-2020 at 02:00 PM.

  2. #2
    This is how I run a jetski shop in the desert nmpeter's Avatar
    Join Date
    May 2008
    Location
    Elephant Butte New Mexico
    Posts
    8,945
    +1
    2,176
    how much magic smoke came out of the wire harness if any?

    you'll have to open the electrical vault to check the wiring in there. I seem to recall a fuse in the system somewhere..I believe they are actually inside the box

    air tools suggested, lots of bolts on the box

    be careful on reassembly, the box gasket is painful and it's easy to pinch a wire if you are in a hurry

  3. #3
    My son just did the same thing on out SLT 700.
    Now no spark?
    I can not see any fuse. No burnt wires that I could see either?
    I know we are not the only people to have done this.
    Please help.

    Thanks

  4. #4
    This is how I run a jetski shop in the desert nmpeter's Avatar
    Join Date
    May 2008
    Location
    Elephant Butte New Mexico
    Posts
    8,945
    +1
    2,176
    did you open the electrical box to check the condition?

    it doesn't take much of a short to cause a corroded connection to fail

    quite a few of these skis have had the box opened and not properly sealed up and corrosion creeps in, then even jumping a wake can break a connection

    lets see a pic of the inside of your electrical box.

    of course reset the circuit breaker under the little rubber plug on the electric box

    plenty of wiring diagrams and pics to help along on google.

    failed ignitions are one of the more difficult things to fix on an older skis , due to the sensitivity of the cdi box and the multitude of replacement parts that people mix and match over the years

    the time and materials cost to actually repair one often exceeds the book value of the ski

  5. #5
    hbernier's Avatar
    Join Date
    Jun 2013
    Location
    Quebec, Canada
    Posts
    132
    +1
    2
    Quote Originally Posted by nmpeter View Post
    how much magic smoke came out of the wire harness if any?

    you'll have to open the electrical vault to check the wiring in there. I seem to recall a fuse in the system somewhere..I believe they are actually inside the box

    air tools suggested, lots of bolts on the box

    be careful on reassembly, the box gasket is painful and it's easy to pinch a wire if you are in a hurry
    Thanks nmpeter,
    I found out this afternoon that the lanyard was not properly hooked up when I checked the sparks on each plug. May be I was lucky in my mistake! I did not open the electrical box, but checked the wiring diagram and did not see any fuse in the circuit.
    I then installed the lanyard and dobble checked it. I checked the sparks and I have sparks on the 3 spark plugs. Tonight, I'll try to start it. Hopefully it will start.
    Wish me luck!

  6. #6
    hbernier's Avatar
    Join Date
    Jun 2013
    Location
    Quebec, Canada
    Posts
    132
    +1
    2
    Since my wife had other projects for me, I was only able to try to startup my jet ski today. I removed the air box cover and the flame arrester, spray some premix in the carb openings, pulled the choke, pressed the start button and voilà! It started right up. Such a relief!
    I wonder if my 2 mistakes cancelled each other. Any ideas?

  7. #7
    This is how I run a jetski shop in the desert nmpeter's Avatar
    Join Date
    May 2008
    Location
    Elephant Butte New Mexico
    Posts
    8,945
    +1
    2,176
    Lucas for some reason was in a forgiving mood.

    don't test him again

    I suggest red paint on the + battery terminal, lots of red paint, lots

  8. #8
    hbernier's Avatar
    Join Date
    Jun 2013
    Location
    Quebec, Canada
    Posts
    132
    +1
    2
    Quote Originally Posted by nmpeter View Post
    Lucas for some reason was in a forgiving mood.

    don't test him again

    I suggest red paint on the + battery terminal, lots of red paint, lots
    Very funny! Yes color would help insted of having a black + sign on a black background in a low light garage.
    I red in past post (from K447 if I do recall correctly) that the regulator or rectifier could fail within a year after being subjected to a reverse voltage polarity. Is there a way to test these components?
    Thanks!


  9. #9
    This is how I run a jetski shop in the desert nmpeter's Avatar
    Join Date
    May 2008
    Location
    Elephant Butte New Mexico
    Posts
    8,945
    +1
    2,176
    Quote Originally Posted by hbernier View Post
    Very funny! Yes color would help insted of having a black + sign on a black background in a low light garage.
    I red in past post (from K447 if I do recall correctly) that the regulator or rectifier could fail within a year after being subjected to a reverse voltage polarity. Is there a way to test these components?
    Thanks!
    Tests tend to be destructive by their nature. It’s possible but not reccomended to run voltage regulators or for that matter Russian made nuclear reactors at 105% of their ratings, captain tupolov



  10. #10
    Click avatar for tech links/info K447's Avatar
    Join Date
    Jul 2007
    Location
    near Toronto, Canada
    Posts
    42,263
    +1
    2,138
    Quote Originally Posted by hbernier View Post
    ... color would help instead of having a black + sign on a black background in a low light garage.

    I read in past post (from K447 if I do recall correctly) that the regulator or rectifier could fail within a year after being subjected to a reverse voltage polarity. Is there a way to test these components?
    ...
    Check the battery voltage with engine running and battery already fully charged.

    If the LR voltage regulator is working and charging the battery the measured voltage should be at least 13.5 volts, and typically closer to 14.5 volts.

    I do not recall posting anything about long delayed LR module failures after a battery reversal.


    I mark the positive terminal on each battery with red electrical tape.

    http://greenhulk.net/forums/showthre...=1#post2943080

    Last edited by K447; 05-26-2020 at 12:08 PM.

Page 1 of 2 12 LastLast

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Don't make this incredibly stupid mistake!!!!!!!!
    By butterbean_29512 in forum Yamaha PWC Performance (2-stroke)
    Replies: 27
    Last Post: 05-13-2014, 09:27 PM
  2. STUPID mistake!!!
    By dane59432 in forum Polaris Open Discussion
    Replies: 17
    Last Post: 06-14-2013, 08:01 AM
  3. Please Help; Stupid Mistake Need Experienced Advice
    By Integragated in forum Yamaha PWC Performance (2-stroke)
    Replies: 6
    Last Post: 05-02-2012, 01:00 PM
  4. Stupid mistake please help.
    By cfnnslsq in forum 2-Stroke Performance
    Replies: 2
    Last Post: 04-25-2011, 04:38 PM
  5. Stupid!!!!mistake!!!
    By Ramps in forum Yamaha PWC Performance (2-stroke)
    Replies: 14
    Last Post: 02-01-2009, 08:42 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •