There's no way out of it that I know of. If you hang your engine in a barn or on the back of your boat for a year without using it, you need to inspect it before you try to run it. Here's a couple of pics of Mark J's engine showing mud dobber nests and nests from other critters that layed an egg in all the holes in the casting that were desirable for there nests. These pics also show the air box covering the two carbs on this model Mariner 60 hp and the wiring to the starter solenoid and both trim solenoids. All this has to e disconnected and the air box removed before getting to the carbs.