I have the MR1 on my waverunner and it has been perfect but I maintain it religiously.

Yamaha jet boat engine life. Jet boats really shine in rivers and fresh water lakes where the shallow water capabilities give them an advantage. To keep your engine from wearing out you will need to make sure you change the oil at the proper intervals. One major factor in engine life is whether or not the engine uses diesel or gas.

States and Canada and registered for use in the 50 US. Coil on plug ignition system. Unfortunately thats not necessarily the case with Jet boats.

A recreational boater can possibly use their boat an average of 200 hours per year meaning the 8000-hour engine can last up to 40 years. Yamaha Motor Corporation USA. Life expectancy of these Yamaha engines will be at least as good as anything else out there which is a long damn time if you dont treat it like dirt.

When I bought mine the owner of the shop in the Ozarks said the life of the engines is 1500 to 2000 hours. I have noticed that in many used jet ski ads many of the ads say the ski has a new engine. At 1812cc this supercharged powerhouse is the go-to engine for most of the Yamaha watercraft lineup and with good reason.

I am now curious why so many skis had to have a new engine. To see a boat with a new engine after 200 hours means the owner had no idea what they were doing. Yamaha Engine Management System YEMS.

Drive only a few times a year constant breakdowns. However huge asterisk - i dont know anything about this 18 motor. Not smooth or fast IMO adequate in 18ft or smaller but in general jet boat engines require a bit more love probably because they are often abused.