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How do you winterize a 4-stroke?

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Discussion Starter • #1 •
My regular boat guy wants to charge me $250 to winterize my 2006 Sea-Doo GTI. Can anyone provide instructions on how to do this?

There's nothing in the manual, and all the instructions I've seen online are for 2-stroke engines, not 4.
 
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i am really just looking for instructions on how to run the antifreeze through the system. if you have SPECIFIC ADVICE ON HOW TO DO THIS i would really appreciate it. i am aware of the fact that i could take it to a professional or buy the service manual, but i am hoping someone can tell me how to do this so i can avoid that.
 
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