Re: 25 Hp Viking (Sears by omc)
Up to you. Got a model number?<br />I'm pretty sure you're looking at the basic equivelant of the early fifties Johnson/Evinrude 25hp, later ressurected in the 60's as the 28hp. It's the smallest of the Big Twins (25, 28, 30, 33, 35 and 40hp) at 35.7CID. I've got a '63 28hp which I like a lot.<br />Since it shares parts with those larger engines and they sold so many of them, you can get replacement parts cheaply and easily. Iboats sells an ignition coil for the thing for around $16 USD, and points and condensor set for around the same price. If they would just improved their international/Canadian order facilities I would actually buy stuff from them rather than go to their competitors.<br />So, if you want a bulletproof engine that's easy and cheap to fix, requires hardly any special tools to wrench, and is a strong performer for it's HP, then that's the engine for you. If you want an engine that's good on gas, you could pull start with your pinky finger, and is light on the back of the boat then keep looking.
<br /><br />There's no compression relief which makes the engine hard to pull. They added that to later 35hp models.<br /><br />They're certainly not great on gas. Nothing with an excess fuel dump valve could possibly be. 
