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  1. #1
    New Member
    Join Date
    Jan 2006
    Posts
    6
    Location
    TN, Sevier Co.
    Tractor
    YM1500

    Default Yanmar YM1500 generator

    Does anyone know where to run the three wires from a Yanmar YM1500 generator (part# 124660-77990)? There are (2) yellow and (1) red.

    Which two go to the regulator (4 wire part #124160-77710) and where does the other one go? [img]/forums/images/graemlins/confused.gif[/img]

    I bought a 1500 which runs good but had all the wiring from the starter to headlights pulled into the fan/belt.

    Thanks,
    Adam

  2. #2
    New Member
    Join Date
    Jan 2006
    Posts
    6
    Location
    TN, Sevier Co.
    Tractor
    YM1500

    Default Re: Yanmar YM1500 generator

    The yellow wires to ground have 20vAC and the red 40vAC

    I wired the two yellow to the regulator and taped up the red. It's charging 14vDC @ 1500RPM

    Anyone know if that'll get-r-done or burn-r-up?

  3. #3

    Join Date
    Jul 2003
    Posts
    39
    Location
    Clover, SC
    Tractor
    YM1500

    Default Re: Yanmar YM1500 generator

    Adam,

    Surprised at the lack of replies...

    I really don't know off the top of my head, but I'll go have a look at mine this evening... let ya know what I see.

    Jake

  4. #4
    Veteran Member Mickey_Fx's Avatar
    Join Date
    Aug 2005
    Posts
    1,132
    Location
    Vancouver Wa.
    Tractor
    Yanmar Fx24D, Cub 3204

    Default Re: Yanmar YM1500 generator

    </font><font color="blue" class="small">( The yellow wires to ground have 20vAC and the red 40vAC

    I wired the two yellow to the regulator and taped up the red. It's charging 14vDC @ 1500RPM

    Anyone know if that'll get-r-done or burn-r-up? )</font>

    Don't know about the wiring but the 14v is perfect for charging a 12v LA battery.

  5. #5
    New Member
    Join Date
    Jan 2006
    Posts
    6
    Location
    TN, Sevier Co.
    Tractor
    YM1500

    Default Re: Yanmar YM1500 generator

    YM1500.jpg

  6. #6
    New Member
    Join Date
    Jan 2006
    Posts
    6
    Location
    TN, Sevier Co.
    Tractor
    YM1500

    Default Re: Yanmar YM1500 generator

    YM1500 2nd try 75k
    Attached Images Attached Images

  7. #7
    New Member mjdupre's Avatar
    Join Date
    Nov 2007
    Posts
    19
    Location
    Chicago(work)/Kentucky(play)
    Tractor
    Yanmar 1500 (Red)

    Default Re: Yanmar YM1500 generator

    Looking at the wiring diagram, does the key need to be in the running position to charge the battery? I know it does for the lights to work, but assumed that it would charge even if the key was off.

    I took a voltage reading at the alternator (generator?) and it read 26 volts AC. Does this seem about right ?

    I removed the positive battery cable and measured 0 volts from the cable to ground while running, now I'm not sure now if the key was on or off.
    I have a habit of turning it off as soon as it starts.

    Tractor is at my cabin so I'll verify next trip down in a couple of weeks.
    Otherwise I suspect I may be looking at a voltage regulator or possibly a broken wire somewhere between.

    It looks like the regulator is mounted up under the dash on the left side.
    Looks like it will be a real treat to get out, unless someone knows a trick or 2.
    Maybe an offset screwdriver.

    I don't suspect the battery, as it started right up after sitting all winter without a charge.
    Mike
    Give a man a fish and he eats for a day....
    Teach and man to fish and he'll spend thousands on a
    fishing boat, sit in it all day drinking beer and telling lies.

  8. #8
    Platinum Member
    Join Date
    Mar 2002
    Posts
    550
    Location
    Central Arizona
    Tractor
    YM1500D

    Default Re: Yanmar YM1500 generator

    It appears to me that the switch can be in either position for charging.

    I usually leave mine on while the engine is running. I connected a voltmeter on the downstream side of the switch. That allows me to monitor the voltage and verify that the alternator is working. After the tractor has been running a while, the voltage gets higher than I like and I turn on the headlights to prevent overcharging.

  9. #9
    Bronze Member turnerbend's Avatar
    Join Date
    May 2006
    Posts
    95
    Location
    Rome, Ga.
    Tractor
    Yanmar 1500

    Default Re: Yanmar YM1500 generator

    I think the switch has to be in the on position for the system to charge.

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