Bukh is a long-established Danish engineering company whose engine business grew around one clear idea: a marine diesel should start reliably, run for decades, and be serviceable by an ordinary owner. That philosophy made its compact single- and twin-cylinder engines a common choice for lifeboats, rescue craft, pilot boats, and fishing vessels, where failure is simply not an option.

The DV series remains the heart of the range. Small sailboat auxiliaries such as the DV10 and DV20 sit in cramped engine bays across Northern Europe, while larger versions power small workboats. Raw-water cooling, indirect injection, and generous service clearances suit salt-air life, and many engines built decades ago still start on the first pull of the crank.

Bukh workshop manuals cover fuel injection pump timing and calibration, injector testing, valve clearance adjustment, cylinder head removal and overhaul, piston and liner renewal, raw-water pump service, gearbox linkage adjustment, and winter lay-up procedures, supported by torque figures, wear limits, and illustrated parts lists.

Because the engines are deliberately simple, most maintenance falls well within the abilities of a careful owner. Yacht skippers doing their own servicing, small marine workshops, and restorers of classic motor sailers all get more from a Bukh with the factory manual on the workbench. Second-hand engines often arrive without paperwork, so a proper book is usually the first spare part worth buying.