Results 1 to 4 of 4

Thread: 650 jetting

  1. #1

    Join Date
    Mar 2010
    Somewhere on the other side of nowhere but still in Canada

    650 jetting

    Gotta 92 650 SL that I had given to me, it had a weak piston in it so I am boring it over 20 thou on all thee cylinders. now will the carbs need to be rejetted or is there enough ajustment in the needles.
    I'm new to the site and what i've seen and looked up has been really great and informative

  2. #2
    Click avatar for tech links/info K447's Avatar
    Join Date
    Jul 2007
    near Toronto, Canada

    The jetting should be fine.

    Are you already planning to clean and rebuild the carburetors?

    Have a look below for more info

    Polaris Fuji (blue) engine

  3. #3

    Join Date
    Mar 2010
    Somewhere on the other side of nowhere but still in Canada
    Going though the carbs now changing fuel lines get rid of the outocock and the restrictor in the fuel return is missing. I should have the new pistons this weekend so by next week I should have every thing together to drop back in

  4. #4
    She likes the bike. But the ski gets her wet!!!! xlint89's Avatar
    Join Date
    Oct 2006
    Cleveland OH
    Welcome to the Hulk.

    Jetting should be OK. Maybe give the high speed needles another 1/4 turn OUT to compensate for the larger bore.

    Be sure to also inspect your petcock for restriction, and the fuel lines inside the gas tank.

    Not a bad isea to replace the oil lines if you're keeping the oil injection.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. New guy with two 1993 Polaris SL 650 jet skis
    By TCB in forum Polaris Projects
    Replies: 14
    Last Post: 07-10-2015, 10:22 PM
  2. 1994 Polaris sl 650 jet ski engine swap
    By QuintCudi in forum Polaris Projects
    Replies: 8
    Last Post: 08-24-2012, 06:33 AM
  3. 1990 Yamaha SuperJet 650 Jet Ski
    By VonnerNIX in forum Yamaha Old School Skis
    Replies: 2
    Last Post: 08-11-2011, 01:08 AM
  4. Polaris SL 650 Jet-ski
    By Chrisrider in forum Polaris How To & FAQs
    Replies: 3
    Last Post: 05-23-2011, 02:33 PM
  5. WTB starter for a stand up 650 jet ski.
    By Nitrosleds in forum Kawasaki Classifieds
    Replies: 1
    Last Post: 06-17-2010, 10:32 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts