Carb bowl and AP versions - Anybody good with OEM parts?
  • PW80Dad
    Posts: 24
    Joined: Fri Apr 26, 2019 2:29 pm

    Carb bowl and AP versions - Anybody good with OEM parts?

    by PW80Dad » Tue Jun 11, 2019 11:08 am

    I have an '05 450x, and the carbs (from what I understand) on the '05 do not have a drain screw.

    I'm trying to order a new float bowl assembly so that I will have a drain screw going forward. I'm having a hard time because it appears that the diagrams are identical (both show a drain screw), but the part numbers are different.


    https://www.motosport.com/dirtbike/oem- ... carburetor (Item #5 on the diagram)
    It looks like the part for the bowl assembly is
    16015-KRN-731 CHAMBER SET, FLOAT (CARBURETOR NO.) Use up to Engine SN FCR04A B

    For the '06
    https://www.motosport.com/dirtbike/oem- ... carburetor
    CHAMBER SET, FLOAT (CARBURETOR NO.) (16015-MEN-851)

    Similarly - I understand that the 08 and later AP set up is superior. I was intending to swap that out as well while I had everything apart.

    For the '05 the gasket set is:
    16010-MEN-671 GASKET SET (CARBURETOR NO.) Use up to Engine SN FCR04A B
    and the AP assembly is (#9 in diagrams)
    16021-MEB-771 DIAPHRAGM SET, PUMP

    And for the '08 they are:
    https://www.motosport.com/dirtbike/oem- ... carburetor
    16010-MEN-851 GASKET SET (CARBURETOR NO.)
    16021-MEN-A01 DIAPHRAGM SET, PUMP
    FWIW - the bowl also has a different number for '08 as well (still #5 in the diagram though)
    16015-KSC-A11 CHAMBER SET, FLOAT

    My questions - does anybody have any idea what i part numbers I need to order so that:
    1: I get a bowl that has a drain - and fits my '05 carb
    2: I get the correct/necessary gaskets (spares are fine)
    3: I get the correct hard and rubber parts for the '08 AP "upgrade" (since I've got the carb off anyway)

    Thanks in advance
  • User avatar
    JimDirt
    Posts: 3310
    Joined: Sat Nov 25, 2006 6:31 pm

    Re: Carb bowl and AP versions - Anybody good with OEM parts?

    by JimDirt » Tue Jun 11, 2019 5:27 pm

    06 X has the drain screw , I installed one on my 02 450R , I can't remember if 08 has it or not , but I know for a fact 06 does , as my X is a 06 , and that is what I ordered for my R and it now has a drain screw .. ;)

    What most of us do for the AP is to put a small O-Ring on the linkage for the slide .... I will find the link to the "mod" and post it

    EDIT:
    This is the Float Bowl : 16015-MEN-851 CHAMBER SET, FLOAT , it is part #5 for the 06 450X Carb

    http://fiche.worldofpowersports.com/yel ... CARBURETOR

    Here is the link to the Pump Mod , it shows how to do the O-Ring mod or the other option using Safety Wire

    https://www.crfsonly.com/howto/ap-mod/p ... -guide.php
    02 CRF450R
    06 CRF450X
    Image
    Weiser , Idaho

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