Pilot Screw O-Ring needed?
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  1. #1
    Senior Member eddy's Avatar
    Join Date
    Oct 2011
    Posts
    100
    Removed the carburetor for the second time tonight and cleaned per. the carburetor cleaning thread (THANKS FORURM MEMBERS!), anyway I soaked the parts in carb cleaner and destroyed the little O-Rings. Are the very small O-Rings necessary for the Carburetor to run properly? There are two; one on the main jet housing/seat and one on the Pilot Air Adjustment screw. Also I have seen 1-3 turns for the Pilot/Air screw; what is the best for a 1998?

  2. #2
    Senior Member sorethumb's Avatar
    Join Date
    Dec 2010
    Location
    Bluffton, SC
    Posts
    663
    The O-rings are necessary. I am running my 98 at 2.5 turns out, however that may not be ideal for your bike depending upon your jetting, altitude, and riding conditions.
    Custom 1998 TW200 Build Thread Hidden Content | 2003 TW200 | 2009 KLX351

  3. #3
    Banned qwerty's Avatar
    Join Date
    Jul 2010
    Location
    NW Tennessee
    Posts
    10,664
    Yes, the o-rings are necessary. Good hardware stores have Viton o-rings, which are okay. Fluorosilicone (FVMQ) and perfluoroelastomer (FFKM) are the best o-ring materials for gasoline AND alcohol resistance.



    More than you ever wanted to know about o-rings here.




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