Results 1 to 10 of 10
  1. #1

    Polaris SL650 Fuel Mixture (running Rich)

    I recently purchased a 95' Polaris SL650. It was running very lean - required some choke to get it to accelerate. I took it in to the dealer and it would appear that they replaced the entire carb/intake. ($850). Now it runs VERY RICH. It's very sluggish out of the hole, but once you get the RPM's up, it'll fly. I'm hoping that there is an adjustment screw somewhere and I can do this myself as I can't afford another visit to the dealer! ) Can someone help? Thank you!
    Dan


  2. #2
    She likes the bike. But the ski gets her wet!!!! xlint89's Avatar
    Join Date
    Oct 2006
    Location
    Cleveland OH
    Posts
    17,328
    +1
    29
    Welcome to the Hulk Dan.

    In the tech section there's some great tuning tips.

    Randy from Watcon was kind enough to write them out. Search for tuning tips for noobies or girls. I forgot what they actually titled it as.

  3. #3
    seaobin's Avatar
    Join Date
    Jun 2007
    Location
    Raleigh, North Carolina, United States
    Posts
    1,573
    +1
    1
    Did you get dinner and a kiss first???????

  4. #4
    Click avatar for tech links/info, donation request K447's Avatar
    Join Date
    Jul 2007
    Location
    near Toronto, Canada
    Posts
    36,584
    +1
    1,272
    Welcome to the Hulk!

    Download the 1992-1998 Service manual.

    Factory settings should get you in the ball park, then find the carb tuning tips to fine tune it from there.

  5. #5
    K447 - THANK YOU! All the tuning tips on this site are great, but USELESS if you don't have the service manual to ensure you're turning the right screws!

    Seaobin - No dinner or kiss.. he was ugly too! Generally, I have no problem paying a good mechanic... unfortunately, this is my first experience with a Jetski and I don't KNOW A GOOD MECHANIC!

    If anyone knows of a great service guy in Northern Colorado, I'd appreciate a name. Just FYI - the place you might want to steer clear of is 'EXTREME YAMAHA'!

  6. #6
    seaobin's Avatar
    Join Date
    Jun 2007
    Location
    Raleigh, North Carolina, United States
    Posts
    1,573
    +1
    1
    LMAO...

    Seriously though, there is really nothing that the dealer did that you could not do yourself.

    Carb cleaning and balancing--Go to Randy at Watcon. $60-70 per carb plus shipping to Washington state and you would have like new carbs. 15 minutes to reinstall and you are done (it is literally 6 bolts )

    We have all been there, we will try not to let it happen again.

  7. #7
    Moderator beerdart's Avatar
    Join Date
    Aug 2006
    Location
    CT
    Posts
    25,929
    +1
    1,407
    Quote Originally Posted by danwann View Post
    K447 - THANK YOU! All the tuning tips on this site are great, but USELESS if you don't have the service manual to ensure you're turning the right screws!

    Seaobin - No dinner or kiss.. he was ugly too! Generally, I have no problem paying a good mechanic... unfortunately, this is my first experience with a Jetski and I don't KNOW A GOOD MECHANIC!

    If anyone knows of a great service guy in Northern Colorado, I'd appreciate a name. Just FYI - the place you might want to steer clear of is 'EXTREME YAMAHA'!
    Make sure you look at the high altitude recommendations in the manual.

  8. #8

    Tuning Carbs on Polaris SL650

    Ok, Thanks to everyone's help I'm making progress correcting the 'way too rich' problem. The problem... now, the low-speed / idle screw is all the way in and it's still getting too much gas off the start. It's better.. it seems to be ok from about 1/4 throttle up to full throttle, but it's still a dog out of the gate and the problem is definitely that it's too rich. It didn't do this before they rebuilt the carbs and choking it just makes it worse (FYI - the high speed screw is also only about 1/2 to 3/4 turn out as well). I'm guessing that they put too big of jets in when they rebuilt the carbs. The receipt says they installed Part # WPS 13-9075 - Mikuni Low Speed Jet. Does that mean they installed .075 jets.. and if so, what size would you suggest? (going smaller). Thanks again for all the help!

  9. #9
    ph2ocraft's Avatar
    Join Date
    Apr 2006
    Location
    Campbell, Ca.
    Posts
    14,100
    +1
    105
    You just paid him 800+ bucks, take it back and have him correct the running issue.

  10. #10
    they had no business changing jets unless some mods were made? and it sure sounds like leaky needle and seats? ask them what psi they set the pop off at? and if they look like this you've been had

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. 94 polaris sl650 fuel issue
    By Kevman in forum Polaris Projects
    Replies: 3
    Last Post: 06-11-2016, 08:39 PM
  2. WTB 96 Polaris SL650 Fuel Sender
    By stl_sl650 in forum Polaris Classifieds
    Replies: 4
    Last Post: 05-24-2010, 10:31 PM
  3. polaris sl650 running lean issues?
    By katz1002 in forum Polaris Open Discussion
    Replies: 2
    Last Post: 06-08-2009, 09:31 PM
  4. 95 polaris SL650 runs 10 seconds then dies
    By pwc311 in forum Polaris Open Discussion
    Replies: 3
    Last Post: 06-21-2008, 06:59 PM
  5. Polaris SL650 Fuel Mixture (running Rich)
    By danwann in forum Yamaha How To & FAQs
    Replies: 0
    Last Post: 06-02-2008, 08:52 AM

Posting Permissions

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