Thread: Discussion engine wont shut off
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Old Nov 18, 2012, 07:12 AM
Cougar429 is offline
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Canada, ON, Windsor
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That through clamp is a rather inelegant method to retain the carb, but two screws through the sides of the bore really is not much better for leak possibilities. However, the instances of leaks were minimal and on other engines would still allow the carbs to close and shut down the engine(s). I was trying to cover what I found specific to the GMS and TT motors. His ST motor exhibits the exact same behavior.

It has been recommended to ensure the nut side of that clamp bar be to the throttle arm side to torque the carb deeper into the housing when tightening. I have never found this really necessary if the carb is held down during clamping. The bigger problem is overtightening as that can damage or deform the carb base diameter.
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