• Welcome to Jetboaters.net!

    We are delighted you have found your way to the best Jet Boaters Forum on the internet! Please consider Signing Up so that you can enjoy all the features and offers on the forum. We have members with boats from all the major manufacturers including Yamaha, Seadoo, Scarab and Chaparral. We don't email you SPAM, and the site is totally non-commercial. So what's to lose? IT IS FREE!

    Membership allows you to ask questions (no matter how mundane), meet up with other jet boaters, see full images (not just thumbnails), browse the member map and qualifies you for members only discounts offered by vendors who run specials for our members only! (It also gets rid of this banner!)

    free hit counter

1987 Mariner jet

Bisges99

Member
Messages
1
Reaction score
0
Points
10
Boat Make
Other
Year
Other
Boat Model
Other
Boat Length
18
I have a Mariner jet and it get up to 3800 rpm’s like normal but doesn’t go faster than 5mph when it used to run almost 30. I’ve tried replacing the keyway in the impeller but hasn’t fixed it? Any help is appreciated.
 
Top