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The DIY Restoration of a Small Yacht: Getting in and about the wee engine (#2) | Gael Force Marine
The engine is among the most critical (and expensive) pieces of equipment on a boat, so it would, of course, be prudent to give it a full inspection and test run before any prospective purchase. The engine in question is a Yanmar 1GM10: an 8hp, single cylinder, raw water-cooled diesel engine. These small diesel engines are relatively simple beasts, so armed with the Yanmar workshop manual and the excellent ‘Boatowners Mechanical and Electrical Manual’ (a book every boat should have on board), I felt confident enough to service the engine and carry out some basic fault diagnoses.