Results 1 to 3 of 3
  1. #1
    redemn93's Avatar
    Join Date
    Aug 2006
    Location
    Jupiter Fl
    Posts
    272

    low speed screw question

    The mag carb low speed screw, from full in, takes only about 3.5 -5 turns before i can remove it. The PTO carb about 5.5 turns from full in. normal? i swapped the screws in the and the problem stayed with the carb, not the screw. and you can easily see that the screw sets lower in the pto carbs when both are full in.


  2. #2
    THE PLATE MAN JIM'S PERFORMANCE's Avatar
    Join Date
    Nov 2005
    Posts
    6,194
    +1
    536
    Quote Originally Posted by redemn93 View Post
    The mag carb low speed screw, from full in, takes only about 3.5 -5 turns before i can remove it. The PTO carb about 5.5 turns from full in. normal? i swapped the screws in the and the problem stayed with the carb, not the screw. and you can easily see that the screw sets lower in the pto carbs when both are full in.
    Probably corrosion at the bottom of the threads. What i do is spray some pb blast inside the threads put the mixture screw back in and once it stops turning i turn it slowly back and forth till it cleans out all the corrosion and bottoms out correctly.

  3. #3
    redemn93's Avatar
    Join Date
    Aug 2006
    Location
    Jupiter Fl
    Posts
    272
    thanks. i will give that a shot.

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. Stuck low speed screws HELP
    By tmg97gp in forum Yamaha PWC Performance (2-stroke)
    Replies: 31
    Last Post: 05-31-2009, 12:10 AM
  2. 2001 Virage - Low speed screw
    By fusion900 in forum Polaris Open Discussion
    Replies: 3
    Last Post: 06-03-2008, 08:41 PM
  3. high and low speed screw settings?
    By johnson7454 in forum Yamaha Open Discussion
    Replies: 1
    Last Post: 05-21-2008, 07:08 AM
  4. 1994 waveraider stalled is it the low speed screw?
    By jeeprunnr in forum Yamaha How To & FAQs
    Replies: 0
    Last Post: 12-31-2006, 04:16 PM
  5. Low speed screw removal
    By swamped in forum Yamaha PWC Performance (2-stroke)
    Replies: 1
    Last Post: 08-24-2006, 09:16 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
  •