Valve rocker snapped off.

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  • alhntr
    Forum Apprentice
    • Jul 2022
    • 39
    • Boise Idaho

    #1

    Valve rocker snapped off.

    !981 GS1100E After getting this bike running after several years the rear one in from right side broke off. Before that I have bee riding for 3 weeks. This happened after I checked the valve clearances. Only made a small adjustment on three valves. New gasket etc. Went 3 blocks and breaky break. Is this Murphy's law in effect here? Pretty dam sure I did this right, followed the procedure on Bass Cliffs site. Oh well next week I will order new arm and remove cam and rocker shaft.
  • Rich82GS750TZ
    Forum Guru
    Past Site Supporter
    Super Site Supporter
    • Jun 2018
    • 5575
    • Mifflinburg, PA / Land of Tar & Chip

    #2
    This happened to me on all 4 intake rockers on my 750, but it happened at an extreme over-rev incident. See destroy-rebuild link in my signature. I've never heard of this happening in normal operation. That doesn't mean that it doesn't happen. Is this bike new to you?

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    • alhntr
      Forum Apprentice
      • Jul 2022
      • 39
      • Boise Idaho

      #3
      I have had for 8 years, never had any issues other than flooding the crank case with fuel one time. My bad left in prime om petcock. Clean carbs and change oil. I figure if I can do top end work on my XR400 I can repair this, Just more of everything.

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