Recent content by Shade Tree Mech

  1. Shade Tree Mech

    Riding Mower Sudden Revs High In Low Throttle

    Bad Governor, back in service again.
  2. Shade Tree Mech

    Riding Mower Sudden Revs High In Low Throttle

    Also, could I be missing a third spring or linkage that I am not seeing in pictures or schematics? I am not understanding how it knows to back down the throttle from high to low. I haven’t been convinced that I’m not missing something.
  3. Shade Tree Mech

    Riding Mower Sudden Revs High In Low Throttle

    Thanks for the replies. Are we all thinking the same thing? Drop the sump and see what's broke.
  4. Shade Tree Mech

    Riding Mower Sudden Revs High In Low Throttle

    That is what I did. Full throttle is CW on the governor linkage arm and I turned the governor shaft CW and tightened it down.
  5. Shade Tree Mech

    Riding Mower Sudden Revs High In Low Throttle

    FYI: The engine starts up on every attempt, even if I hold the butterfly linkage at low throttle.
  6. Shade Tree Mech

    Riding Mower Sudden Revs High In Low Throttle

    By static governor adjustment, do you mean with an rpm gauge and start bending linkage metal? I believe I did a governor adjustment, but I am not sure of what a static adjustment is, sorry.
  7. Shade Tree Mech

    Riding Mower Sudden Revs High In Low Throttle

    No, I checked. It is extended/vertical when the throttle is open/high and relaxed/horizontal when the throttle is low, but the butterfly linkage plate isn't against the idle adj. screw. It never rests against it on it's own. I can push it against the idle adj. set screw with no problem, and...
  8. Shade Tree Mech

    Riding Mower Sudden Revs High In Low Throttle

    A Briggs Engine Model 331877-1371-B1 was running fine. It was shut down to refuel and upon start up it revved very high and lowering the the throttle produced very little change. With the throttle control in low, I can manually push the butterfly plate/linkage against the idle adjustment screw...
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