Yamaha Lower Unit Assembly - F2.5MSH 2005-2010 - 69M-G5300-01-4D - See Description for Applicable ModelsYamaha Lower Unit Assembly Complete Lower Unit System 69M G5300 01 4D Overview On a small motor like this, the lower unit takes a lot more abuse than people expectshallow water, bumps, constant shifting. When its running right, you get smooth engagement and steady push without thinking twice. But once it starts wearing out, even a small engine will let you know with noise or rough operation. This is the kind of replacement that brings everything back