Hi! An old couple gave me an old Evinrude. Serial # 18304A100G499. The cover says 25HP but I<br /> checked a Website and was told that it's a 1973 18HP. Can someone please verify? I installed<br />a recoil and tried to start up I rand for a few seconds and shut down. Now the crank is difficult to turn.<br />It is really hard to pull start. I'm new to all this and I can't afford to put a lot of money into this Any<br />advice you can give will be appreciated. Thanks Noel