Here is a picture of an over tightened oil pressure sender. It only gets 90 in/lbs and if you can't get a torque wrench on it then just snug otherwise this may happen.
Overtightsendercrack.jpg (You do not have access to download this file.)

Roger Lee
LSRM-A & Rotax Instructor & Rotax IRC
Tucson, AZ Ryan Airfield (KRYN)
520-349-7056 Cell

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