Have Boat Questions? Ask a Boat Repair Expert.
Hello, my name is***** will assist you.
When you installed the gear case, if it did not go on smoothly, you could have damaged the oil pan. You are goig to need to haul the boat, and remove the gear case again. Inspect the upper end of the shaft for any oil. This could also be from a bad seal on the oil pump, or even a crack in the block.
the gear case is the lower unit, where the prop is located.
Let me know what you see.