• 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
  • Announcing the 2023 Jetboat Pilot 9th Annual Marine Mat Group Buy for JetBoaters.net members only! This is your best time to buy Marine Mat from JetboatPilot - you won't get a better price - 30% Off Savings Are Available To You Right NOW!

    So if you are tired of stepping on really hot snaps/carpet, or tired of that musty carpet smell - Marine Mat is the best alternative out there! Get in on this now, or pay more later!

    You only have until Saturday September 30th to get in on this.....So Hurry!

    You can dismiss this notice by clicking on the "X" in the upper right corner>>>>>>>>

1987 Mariner jet

B

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.
 
You must log in or register to reply here.
Top