Results 1 to 4 of 4
  1. #1

    Sl750, 5250, rpm top out, why ?

    1995 sl 750,

    110, compression all 3 cylinder. Oem carb rebuilt kit, new fuel pump, 3 line one. Oil injection block off, 40 to 1 pre mix, 93 octane, reeds replaced with good old, oem ones. Trim still works, topping out 34/38 mph, 5250 rpm.

    New plugs br8es.

    What to look at ? To rich ? Perhaps carb adjustment?

    Ryan


  2. #2
    She likes the bike. But the ski gets her wet!!!! xlint89's Avatar
    Join Date
    Oct 2006
    Location
    Cleveland OH
    Posts
    18,189
    +1
    94
    All 3 cylinders firing?

    Impeller spins freely?

    What impeller is installed?

    Possibly carb adjustment.

    Any other symptoms?

  3. #3
    All 3 cylinder firing, checked spark, I did a check, and 1 plug was rich, mag , pto cylinder was lean, made adjustments, hopefully was enough, now 5900 rpm instead of 5250. Didn't want huge carb adjustment. Did 1/4, turn out for pto and 1/4 turn in for mag. Middle cylinder was right on.
    Stock propeller. I have a spare, if needed.
    Thank you

  4. #4
    She likes the bike. But the ski gets her wet!!!! xlint89's Avatar
    Join Date
    Oct 2006
    Location
    Cleveland OH
    Posts
    18,189
    +1
    94
    You're about 1k RPM down. Should be around 62-6300 RPM.

    I'd suggest fattening up any lean cyl and start taking fuel away. Much safer this way than running lean.

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. Can't reach top speed. Or top rpm. PLEASE ANY ADVICE APPRECIATED
    By tikihuts.forless in forum Yamaha Open Discussion
    Replies: 6
    Last Post: 01-17-2017, 02:05 AM
  2. Freedom 700 Engine RPM Strange between 4000 - 5000 RPM / Top Speed?
    By MattOsta in forum Polaris Open Discussion
    Replies: 2
    Last Post: 07-12-2015, 11:13 PM
  3. FS '94 SL750 in Top Shape
    By johnsonmtz in forum Polaris Skis
    Replies: 7
    Last Post: 09-06-2011, 08:39 PM
  4. FS 2000 Toyota Tacoma Pre-Runner - $$5250
    By sixtydashone in forum General Classifieds
    Replies: 6
    Last Post: 06-30-2011, 03:54 PM
  5. ultra 150 wont go rpm stops at 5250
    By macattack in forum Kawasaki PWC Performance (2-stroke)
    Replies: 1
    Last Post: 07-20-2008, 06:18 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
  •