On the 2hp Suzuki the impeller is located behind the propeller. Remove the prop and the two nuts above and below the prop which holds on a plate which covers the impeller. Be careful not to remove the impeller housing just the cover otherwise all the gear oil will drain out.I want to check impeller and can't figure out how to get the lower unit off. I undid the one screw under the cavitation plate and it wouldn't seem to pull out. Am I missing something?? thanks for any advice. Mettyfish