I need a manual for my mothers boyfriend's Evinrude. It's a '77, 55hp outboard,(Model # 55773D). I noticed this sight sells two different manuals for this engine, a Seloc and a Clymer. I'm going to be taking the lower unit apart possibaly, and I need a manual that covers this in detail. Which is the better of the two? <br />Thank, <br />Shaffer