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Thread: 1970 R60/5 Starter will not stop

  1. #1

    1970 R60/5 Starter will not stop

    The starter on my 1970 R60/5 will not turn off even with the key out. I replaced the old starter button and the stater relay. My thought now is that the stater solenoid is hanging up. Has anyone had this issue before?

  2. #2
    #4869 DennisDarrow's Avatar
    Join Date
    Jan 2006
    Sugar Valley, Ga
    The solenoid on the air cooled engines is merely a huge relay. It switches/converts the low power amperage of your handlebar switch to the amperage available from the battery to the starter motor..........Yes, it's possible for the thing to short out....BUT.......really unlikely. For me, it would seem to be that you did some wiring and installed new replacement devices that the problem would be there........Something crossed up????..............God bless.......Dennis

  3. #3
    Registered User kioolt's Avatar
    Join Date
    Apr 2003
    It's been a long time since I have looked at an airhead wiring diagram or even worked on an airhead. I do own one that I bought in 82 and haven't ridden in years. From what I remember the above description of how it operates is correct for an airhead. With that being said, if you take the low power connection off of the solenoid on the starter and it continues to run, then you have a solenoid problem. If it stops running when you remove the low power connection then you have a problem with your wiring or starter button.
    2004 R1150RT 183,000 miles , 1991 K100LT 128,700 miles, 1982 R100RT 106,900 miles
    Total 418,600 BMW miles
    The cheapest thing on a BMW is the nut that connects the handlebars to the seat.

  4. #4
    Thanks for the input. The problem actually started before I changed things. I will try removing the wire from the relay and see if that works.

  5. #5
    Registered User lmo1131's Avatar
    Join Date
    Jan 2010
    Pismo Beach, CA
    So, whatcha find out??
    "It is what you discover, after you know it all, that counts." _ John Wooden
    Lew Morris
    1973 R75/5 - original owner
    1963 Dnepr

  6. #6
    What IMO said.

  7. #7
    Airmarshal-IL James.A's Avatar
    Join Date
    Sep 2013
    central Illinois
    Y'know, I had this happen on an airhead several years ago, but I no longer remember what I did to fix it. You could pull the tank and lift the starter cover and lay open the whole system to determine why the starter solenoid stays energized when the start button is released.

    As always with any electrical issue, make sure that the battery is fully charged.

  8. #8
    Be careful! There has to be a high amperage "hot" wire running to the solenoid so that when you press the starter button on the handlebar, the "low" amperage "hot" wire will energize the solenoid and then transfer the power of the high amp hot wire thru to the starter. Having said that, that means that you don't want to go poking around where those various components with a screwdriver as you might actually touch the "hot" high amp wire and cause some more problems.

    What I would do is to identify the solenoid, and remove it, carefully take it apart and totally clean. It is possible that the contacts have sufficiently gotten marred to the point that they stick together. Be very careful not to damage any of the very fine wiring that is used on the magnetic coil and to the internal connections. Just clean out everything and make sure (using small wire connectors to your car battery) that the solenoid is properly working (has a slight clicking noise) and the high amp contacts are working (touching when energized and separated when non-energized).

    Then reassemble the whole solenoid, using a sealer and even JB Weld to hold together if the original weak "tabs" have broken off or gotten corroded to the point where they won't work.
    "The difference between death and taxes is that death doesn't change every time congress meets." - Will Rogers

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