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  1. #1
    Registered User Motodan's Avatar
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    Need a bigger hole or small socket....

    Been a while since I'd changed plugs on a Beemer. So on my '08 RT I started with the top plugs. And damn, the 5/8 (16mm) socket was too "wide" to reach plugs. But behold, a second 5/8's in the box did...primary plugs out all good. Now for the down under ones, but the socket used to extract primary plugs will not fit. These two holes are smaller - why? I live in a town with a greater metro area population of over 350,000, but not one thin(ner) wall deep socket available to fit those secondary holes. Had to get the ole grinder out to have a "correct" size socket. I will never figure out "the BMW way".
    F850GSA

    MOA #46783

  2. #2
    P Monk
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    May 2005
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    Orange, Texas
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    smaller socket needed

    I found that where an 3/8" drive socket was a little too big, a 1/4" one fit just right.
    P. Monk
    74 R90/6 (the Black Hole), 2011 R1200RT.

  3. #3
    Registered User Motodan's Avatar
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    I will look for a 1/4" drive, 5/8's inch (16mm) deep today. I did look at one store earlier, but largest 1/4" drive deep they carried was 12mm.
    F850GSA

    MOA #46783

  4. #4
    Gerard jagarra's Avatar
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    Was there a spark plug socket in your tool kit or was it missing? In some cases I have had to order a tool kit replacement from dealer to find the correct socket that cleared.


    Maybe this one will work https://www.ebay.com/itm/16mm-Spark-...19.m1438.l2649
    Last edited by jagarra; 04-21-2018 at 04:02 PM.
    1994 R1100RS-(5/93)-,1974 R90/6 built 9/73,--1964 Triumph T100--1986 Honda XL600R

  5. #5
    RK Ryder
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    London, Ontario
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    Check out the link below for a recent thread on this topic. It may be your inexpensive solution. Pictures are in post 23.

    Hope this helps.

    https://forums.bmwmoa.org/showthread...head+Sparkplug
    Paul F. Ruffell
    Retired and riding my RTs, the '87 K100 & the '98 R1100 !
    Niagara Riders & Knights of the Roundel #333

  6. #6
    Registered User lkchris's Avatar
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    You can buy the socket from BMW ... special tool.
    Kent Christensen
    21482
    '12 R1200RT, '02 R1100S, '84 R80G/S

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