Page 1 of 2 1 2 LastLast
Results 1 to 10 of 14
  1. #1
    XLTNoob
    Join Date
    Jul 2007
    Location
    Baytown, TX
    Posts
    400

    1200PV Carb adjustment required?

    Hey guys - got a quick question..

    I had rebuilt my 2001 XLT 1200 a year and a half or so ago.
    In doing so I also did:

    • New "Hod Rods" crank.
    • Replaced CTR and PTO cylinder/piston combos (both used)
    • Checked reeds and cages
    • D-Plate in exaust.
    • New plugs.
    • New 13/19 Solas prop
    • Installed ProTec F/A's
    • Replaced High/Low jets and spring.
    110 pilots and 125 mains
    1.5 needle and seats


    Here's the question. This thing is loading up with fuel BIG TIME at idle, and the low speed jet is in as far as it can go. I believe I need to go down a size or two on the jets..

    Which jets are the ones that affect idle operation? Won't changing the idle jets also affect the high speed operation as well?


  2. #2
    All hail the Chief! fullboogie's Avatar
    Join Date
    Nov 2005
    Location
    Texas
    Posts
    3,155
    +1
    44
    Well first of all, you have too much jet on the big end for those mods. Secondly, what is the popoff pressure set at?

  3. #3
    XLTNoob
    Join Date
    Jul 2007
    Location
    Baytown, TX
    Posts
    400
    Well this is embarrassing.. I don't remember!

    I honestly cant remember if I even checked popoff, it's been so long.

  4. #4
    If your not doing something, its hard to screw up. stlouisramsfan's Avatar
    Join Date
    Jul 2007
    Location
    Pontoon Beach Illinois
    Posts
    1,115
    I would say if you dont remember .... it didnt getted checked

  5. #5
    XLTNoob
    Join Date
    Jul 2007
    Location
    Baytown, TX
    Posts
    400
    I believe you are correct sir

    What should popoff pressure be? Is there a way to check it without having to buy a specialized $400 gauge?

  6. #6
    Chris03HD's Avatar
    Join Date
    Sep 2009
    Location
    Jersey Shore
    Posts
    582
    +1
    3
    Thought the 110's, 125's, and 1.5's were the tried an true cocktail for 1200's with chokes removed, and aftermarket f/a's?

  7. #7
    Moderator OsideBill's Avatar
    Join Date
    Mar 2006
    Location
    United States
    Posts
    11,875
    +1
    30
    Quote Originally Posted by Chris03HD View Post
    Thought the 110's, 125's, and 1.5's were the tried an true cocktail for 1200's with chokes removed, and aftermarket f/a's?
    along with the proper spring it is the correct tried and true recipe.
    120 mains with choke, 125 without

  8. #8
    XLTNoob
    Join Date
    Jul 2007
    Location
    Baytown, TX
    Posts
    400
    Hmm.. Mabye I should remove my choke plates and then see how she acts.

  9. #9
    Moderator OsideBill's Avatar
    Join Date
    Mar 2006
    Location
    United States
    Posts
    11,875
    +1
    30
    I would first find out what is causing the excess fuel in the low end. either something is sticking the needle open or or it is getting a large amount of vacuum pulled on it.

  10. #10
    All hail the Chief! fullboogie's Avatar
    Join Date
    Nov 2005
    Location
    Texas
    Posts
    3,155
    +1
    44
    Bill and I have a slightly different approach on jetting, so I'm only giving my opinion on this. I do not believe choke removal requires upping the jets to a 125. It won't hurt anything, just makes it run richer than I think is required for those mods.

    Either way it's jetted, that doesn't sound like your problem. I would check popoff pressure to make sure you don't have a N/S dribbling at idle.

Page 1 of 2 1 2 LastLast

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. carb adjust 98 slxh
    By tryintolearn in forum Polaris How To & FAQs
    Replies: 14
    Last Post: 07-28-2007, 11:32 PM
  2. carb adjustment
    By t1turner in forum Polaris How To & FAQs
    Replies: 1
    Last Post: 06-08-2007, 11:47 AM
  3. sl 780 carb adjustment jetting assistance...
    By jcc011185 in forum Polaris PWC Performance
    Replies: 5
    Last Post: 05-07-2007, 03:55 PM
  4. carb adjustment
    By tommy33mac in forum Polaris How To & FAQs
    Replies: 5
    Last Post: 04-07-2007, 08:15 PM
  5. where to start on carb adjustment
    By brandn in forum Yamaha PWC Performance (2-stroke)
    Replies: 8
    Last Post: 12-16-2006, 09:47 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
  •