I am new to this site and a first time jet ski owner. I was given a Kawasaki 750 ZXI from a friend. He had it stored in his garage for 4 years. He said it ran good the last time he used it. I replaced the battery and tried starting it. When I pressed the start button, it made 1 knock sound, nothing else. Another friend of mine said it may be the solenoid.

I would greatly appreciate any feedback