Home › Forum › Ask A Member › Gettin into the lower unit › Re: Gettin into the lower unit
You just need a spanner wrench and look at the exploded view of the L/U at one of those websites. If your ’75’ L/U is similar to Merc MK’s, after you get into the prop shaft area & remove the shaft w/gears, bearings, etc. – remove the bolt holding the pinion gear. Then with the pump cover off, if you don’t have all the special merc tools, clamp the driveshaft in a vice, use a block of wood and tap down on the L/U to pull out the impeller cup (or does a ’75’ have a "modern" water pump?) Catch the L/U in something as you tap on it to remove the shaft, or have someone hold it for you. I’ll go take a quick look at seaway to see what your L/U is actually like.
NEVER MIND – your L/U is more "modern".
Your only problem will be getting the "nut" off, holding in the bearing carrier and everything else. Go look at one of those websites, nothing that hard to figure out!