According to most PWC manufacturers, you should change the oil in your Jet Ski every 50 engine hours.
Now that doesn't take into consideration a couple of things... but let's ask the most basic question:

How long does it take for you to put 50 hours on your jetski?

A lot of people may put a lot of hours on a jetski when they first purchase it, then it will sit for months even years between uses. The worst thing you can do to a jetski is let it sit. Jetski engines will always have some moisture in them.

Now, you have to keep in mind, that the salt water environment that we have in South Florida is extremely harsh and damaging to your jetski.

A jetski hull is not perfectly waterproof... and even the gas that you purchase for your ski can have water in it sometimes... so all that moisture, inside your motor for an extended period of time can cause major damage to your engine.

One of the most common issues that can occur is the spark plugs get rusty and actually get stuck in the engine block.

When that happens, changing out $20 worth of spark plugs, not becomes a $3,000 repair job! When a spark plug gets stuck in the cylinder head, it can break when you're trying to take it out... and that's a big repair, that involves taking the engine apart in order to access the spark plug from inside and get the broken piece out of the motor.

The best way to take care of your engine is to service is regularly. You should service it at an absolutely minimum, at least once a year. The worst thing you can do to any PWC or Boat, is let is sit without use. More things can go wrong with it from lack of use, than from overusing it.

  • Properly Flush it EVERY Time!
  • Do regular services to your engine
  • Use ethanol free fuel ONLY.
  • Use it or lose it! Don't let it sit.