Johnson 140 lower unit

by wade porche
(houma la.)

have a johnson 140 motor runs great but when put it in gear hear a loud knocking noise. does it only in forward gear reverse no noise. i know it is coming from foot. pulled bottom drain plug it has metal on it. but no large pieces just small ones it still goes good in forward. any guess to what it could be and what it would cost to repair.

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