2003 Kawasaki Jet Ski - wont go over 40 mph?

Tinker925

New member
Hey there, any tips?

I have a 2003 1200 Kawasaki Jet Ski..... took it out this weekend (first time for the season). I charged the battery over night, but it still took quite a while to start in the beginning.... its starting fine now... but it's sluggish and wont go over 40mph? normally the ski can get into the 60's. It also has almost NO power coming out of turns.

Can spark plugs cause it to act like this? suggestions?
 
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