Manuals › Yamaha › M12 / M18 / M20 / M26 inboard diesel
2012-2019 Yamaha M12 / M18 / M20 / M26 inboard diesel Owner's Manual - a 695 KB PDF on Helmy's shared manual library, free to import to your own boat.
Owner's manualPDF · 695 KB
25FN77 OPM 1 - EN NL DE.pdf · added October 2026
Equipment manuals are where the service intervals, wiring diagrams, fault codes and torque settings live. With the Yamaha M12 / M18 / M20 / M26 inboard diesel documents in the vessel's library, the engineer on the dock can read the same page the owner is reading, and the maintenance log can quote the interval the manufacturer actually specifies rather than the one somebody remembers.
This manual imports into your vessel's library in one tap and lands in your own Google Drive - so the next time it is wanted it is already aboard, offline, at two in the morning with the signal gone and the engine refusing to start.
Get Yamaha M12 / M18 / M20 / M26 inboard diesel on my boat
Helmy Free covers one boat with usage limits (three library imports per vessel). Helmy Pro is unlimited for €5 per vessel a month. Got a manual nobody has shared yet? Upload it to your boat and share it to the shelf - that is how this library grew in the first place.