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View Full Version : Mercury Tech Check valve looking things between front half and intake??



rchevelle71
06-23-2009, 06:40 AM
OK, so I am a little slow sometimes, ready to put my intake and carbs back on, and needed to clean up old gasket material from the front half. I removed these 6 rubber and metal checkvalve looking things from the front half as not to damage them, but I didnt look at which way they go in, can anyone help me out here?? I attached some pics just in case I didnt explain well what I am talking about. They have 2 holes in one side, and one in the other looks like a checkball?? Just need to know which way is up?? In the first pic, the red circled areas, second pic is of the valve removed. Motor is a 1994 Merc 225 3 liter. Thanks

rchevelle71
06-23-2009, 09:39 AM
Anyone??

rchevelle71
06-23-2009, 01:13 PM
OK, found out it is called a stop plug, and is part # 10 in this pic, but it looks different from one end than the other, not sure which way to install them.

Part 21 in this pic