Yamaha Outboard Technical and Maintenance Information for You!
Injector Gaskets, Where Are You? You just finished installing reconditioned injectors on a HPDI VZ225TLR. You were letting the engine idle while checking fuel pressure and noticed a sound coming from the engine. It sounds like a compression leak near the cylinder heads. You don’t see any indication it is the head gaskets and don’t […]
Removing HPDI fuel injectors from the cylinder heads can be a struggle, particularly in saltwater applications. Corrosion can build up between the injector and the pocket in the cylinder head. To block corrosion build-up and ease future removal, apply a light coat of Yamaha WR#2 waterproof grease (pn 90790-74046-00) to the metal injector body when […]
When troubleshooting a cooling system issue or optimizing motor jack plate height, one of the first things to do is check cooling water pressure. Ideally, all boats would have a water pressure gauge installed, but we all know that’s not reality. Unfortunately, even installing a water pressure gauge temporarily if the boat doesn’t have one […]
There are a few places on our motors where hex drive fasteners are used, typically on upper casing aprons and water intake screens. A thread sealant is applied to the apron fasteners to prevent salt and mineral build up from making the screws impossible to remove. While minimizing the effects of salt, the sealant can […]