Wright Sentar Battery Not Charging

Discussion in 'Mechanic and Repair' started by ed2hess, Nov 15, 2010.

  1. ed2hess

    ed2hess LawnSite Fanatic
    Posts: 13,079

    It has a 17KAWE engine. I know the battery is good and fuses are fine. I measure 17 volts dc at the engine converter and traced it to one side
    of the fuse holder. It did measure -17volts relative to the battery gnd which seemed wrong. It would seem logical that from the fuse holder the line would connect to a battery lug and that would likely be at the starter solenoid right? Unfortunately I didn/t get continuity.
     
  2. RickyDL77

    RickyDL77 LawnSite Senior Member
    Posts: 431

    start by turning on the key and checking for 12 volts on the terminal of the voltage regulater with the single yellow wire.
    if no voltage then check for
    1 blown fuse
    2 bad wire or connectors
    3 yellow wire on the ignition switch

    Can also disconect the 2-wire plug comming from the charging stator and use a multi meter set to AC voltage.. start the engine and put wire leads to both wires (doesnt matter about positive and negitive sides) should be pushing 26V AC to 30V AC at 3000rpms
    I have had 3 Kawi motors show a negitive AC voltage and all three were fixed by replacing the Stator Coil, everything showed as within specs but somehow the voltage was comprimised.
    Can also check the stator coil resistance with wires unhooked...
    for electric start should read 0.01 - 0.1 Ohm
    for recoil start with electric clutch should read 4.4 -15 Ohm ( if it's this version will be one wire, connect meter to wire and to engine block)

    if all this reads to specs then could be the voltage regulator, lemme know what you get
     
  3. ProMo

    ProMo LawnSite Bronze Member
    Posts: 1,468

    I had a no charge problem, it was the yellow wire at the ignition switch somehow melted.
     
  4. ed2hess

    ed2hess LawnSite Fanatic
    Posts: 13,079

    Sometimes you get lucky....this ended up being a bad ignition switch. The switch wasn't returning back to the neutral positon after starting the mower. When that happens the DC voltage out of that convertor....it would read -19 volts dc. Put in new swich and all is well. I guess there was some voltage being applied to the starter coil and that messed up the convertor. I am calling the device that takes the AC and makes it DC a convertor.
     
  5. ProMo

    ProMo LawnSite Bronze Member
    Posts: 1,468

    ac to dc is a rectifier . inverter is dc to ac
     
  6. ed2hess

    ed2hess LawnSite Fanatic
    Posts: 13,079

    And I noticed that kaw calls it a voltage regulator.
     
  7. ProMo

    ProMo LawnSite Bronze Member
    Posts: 1,468

    technically its a regulator/rectifier


    here is what wright said when I had same issue.
     

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