Results 1 to 3 of 3
  1. #1

    fuel pump check valves?????

    Hey can someone help me out I just rebuilt my carbs but I either donít understand how to test the check valves or I did something wrong.

    If I understand the below attachment I should be able to blow in the inlet but now be able to suck. Is this correct??? I can suck air from the inlet.

    Thanks a bunch,
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	Untitled.jpg 
Views:	59 
Size:	241.3 KB 
ID:	82614  

  2. #2
    steach's Avatar
    Join Date
    Dec 2005
    Rock Tavern, NY
    Check that the rubber fastners are FULLY seated through the pump and that the valves seat.

    The check valves are shaped like a bowl/lid. The rubber fastners should press through the bottom of a bowl not the top of a lid.

  3. #3
    96XPSS's Avatar
    Join Date
    Feb 2006
    Warner Robins, GA Home of the 2007 All-Star Little League World Champions!
    I don't agree with that method. What about checking the other one?

    Disassemble and visually checking is the only sure way, IMO.

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. Mikuni Carb Fuel Pump Check Valve Install
    By OsideBill in forum Yamaha How To & FAQs
    Replies: 9
    Last Post: 08-17-2015, 09:33 PM
  2. Polaris slx 780 fuel pump check valves...
    By Lockout in forum Polaris How To & FAQs
    Replies: 2
    Last Post: 10-11-2010, 11:35 AM
  3. Fuel Pump Check Valve Query
    By steelroe in forum Yamaha PWC Performance (2-stroke)
    Replies: 2
    Last Post: 05-19-2010, 08:50 PM
  4. 44mm i body fuel pump check valves
    By billy's gpr in forum Yamaha PWC Performance (2-stroke)
    Replies: 9
    Last Post: 03-19-2009, 08:24 PM
  5. Wrong fuel pump check valves?
    By kingstretch in forum Yamaha Old School Skis
    Replies: 18
    Last Post: 09-15-2008, 11:48 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