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  1. CDI Testing with a multimeter - Motored Bikes

    Jul 2, 2016 · I thought a good thread would be to how to test a CDI & Magneto with a multimeter. I know I currently have the issue of a potential CDI or Magneto that could be bad. For the …

  2. how do you test a cdi and coil? - Polaris ATV Forum

    May 20, 2010 · You cannot test the CDI. You can check the coil though. Use an ohmmeter to check continuity between the coil ground as well as the ignition wire. Resistance should be …

  3. xplorer 300 no spark - Polaris ATV Forum

    Oct 26, 2020 · Crank trigger and CDI charging coil is all the same thing - part of the stator - your ignition system consists of the stator, flywheel, CDI box and coil - if you want to know which …

  4. sportsman 90 wiring problem | Page 4 | Polaris ATV Forum

    Oct 16, 2025 · Step by step just as I instructed - unplug the blk/wht wire from the CDI box and check continuity - you can go from the blk/wht wire directly to ground (battery neg) with the key …

  5. Sportsman 500 "No Spark" - Polaris ATV Forum

    Apr 20, 2020 · If the spark is timed, but weak it's either a bad CDI box, coil or perhaps a poor ground connection somewhere. I have those fuse blocks and wire terminals in stock - $30 and …

  6. 2001 500HO SPTMN CDI testing - Polaris ATV Forum

    Jul 22, 2012 · Does anyone know how to test the CDI box on this machine? Thanks Is it a part that goes bad?

  7. 99 Sportsman 500 - no spark - some diagnostic tests done...

    Jun 3, 2013 · So far, I've changed the plug, checked plug wire, checked all wiring for damage, disconnected black wire from cdi box to check for faulty kill switch, and took a few …

  8. Cdi change out - Polaris ATV Forum

    Mar 26, 2022 · The trigger tells the box to fire, the box determines when to fire which coil with the capacitors, and zap goes the spark plug, ad infinitum. How do I know if my CDI box is bad on …

  9. Scrambler 500 no spark - Polaris ATV Forum

    May 25, 2020 · To check the stator or CDI box requires a peak voltage tester - if it gets one spark, the charge coil did something and the pulse coil told it to fire, but the charge coil (red and …

  10. 2008 Sportsman 90 CDI Box Options- and are they AC or DC?

    Jan 2, 2024 · Check for 12v on the brown wire of the CDI box 2 wire plug Do not check BN to DB - check brown to ground with all switches in the run position. If there is 12v on the brn wire …