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  1. #1
    Member
    Join Date
    Feb 2015
    Location
    Cypress Texas
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    594

    2004 Yamaha 250 HPDI Charging issue.

    Model VZ250TLRC
    S#60XL1000746

    How do I check the charging system on this motor? Any help appreciated. Thanks.
    Last edited by dbassman; 09-18-2019 at 09:12 AM.
    2001 Champion 206, Yamaha 250 V-Max hpdi
    1997 Nitro Savage 884, Mercury150 XR6, 8" Slidemaster Jack Plate

  2. Member
    Join Date
    Feb 2018
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    3,151
    #2
    Digital multi-meter set on DC volts connected to the start battery. If the battery is fully charged the voltage will be ~ 12.7 volts.

    Start the motor. Once the motor is running, the voltage seen at the battery will rise. At a fast idle, a minute or so after the motor has begun to run, I would expect to see a voltage above 14 volts.

  3. Member
    Join Date
    Feb 2015
    Location
    Cypress Texas
    Posts
    594
    #3
    Checked voltage before starting motor. 12.9 volts

    Checked voltage after starting motor slow idle. 13.9 volts

    Checked voltage at med idle. 14.1 volts

    I think it is good. replaced battery with blue top Ultima. Thanks for the help.
    2001 Champion 206, Yamaha 250 V-Max hpdi
    1997 Nitro Savage 884, Mercury150 XR6, 8" Slidemaster Jack Plate