Information on this website is based upon the webmasters own experience and you use this information at your own risk, No liability is accepted for losses or claims resulting from your decision to act on the basis of information. A qualified experienced, insured Marine Engineer is always reccomended to diagnose and fit engines in person,  but should you wish to DIY, then it is of course solely at your risk. A boat Engine is a primary piece of safety equipment, second only to the integrity of the hull, passengers and other people property and wildlife may be at risk, not just your boat. Act responsibly and ensure you fit original parts in the prescribed way. Be prepared to invest money and time to keep the engine maintained reliably, it will save you thousands on replacement. If you are unsure, please ask?