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  1. Jeff Witt
    Post

    No key questions and other missing parts.

    [ATTACH] [ATTACH] Hope this helps. Jeff
    Post by: Jeff Witt, Apr 14, 2022 in forum: XJ Technical Chat
  2. Jeff Witt
    Post

    Close Valve Shim Clearances

    Keep in mind that over time the valve clearance will always move towards a smaller gap so if the spec is .11-.16 MM and you are at .16 then you...
    Post by: Jeff Witt, Mar 15, 2022 in forum: XJ Technical Chat
  3. Jeff Witt
    Post

    Front brake caliper skewed? 82' XJ650 Maxim

    This is what new brake pads look like. The pad material is cut at an angle to account for the caliper to be able to pivot on the bolt. [ATTACH]
    Post by: Jeff Witt, Mar 10, 2022 in forum: XJ Technical Chat
  4. Jeff Witt
    Post

    No key questions and other missing parts.

    The helmet lock is easier to remove to bring to a lock smith than the ignition. Just don't forget to put the lock back or your bike will soon be...
    Post by: Jeff Witt, Mar 9, 2022 in forum: XJ Technical Chat
  5. Jeff Witt
    Post

    Front brake caliper skewed? 82' XJ650 Maxim

    Plzhelp, Are the brake pads correct? The caliper pivots on the bolt rather than slide back and forth like on a car so the pad material is on a...
    Post by: Jeff Witt, Mar 9, 2022 in forum: XJ Technical Chat
  6. Jeff Witt
    Post

    how wide can my tire be?

    Jerrod, I'm wondering why you want to change from stock? Yamaha has always put a LOT of work into getting the handling of their motorcycles just...
    Post by: Jeff Witt, Feb 28, 2022 in forum: XJ Technical Chat
  7. Jeff Witt
    Post

    fuel diamond, tablet , any good , or a gimmick

    My guess would be that the fuel diamond tablet is made of some type of sacrificial metal so it will oxidize from the water absorbed by ethanol...
    Post by: Jeff Witt, Feb 28, 2022 in forum: XJ Technical Chat
  8. Jeff Witt
    Post

    why is my xj650 topping out at 97km/hr?

    While you are waiting for replacement seals, make sure to have a read through of the entire RickoMatic post on cleaning the carbs....
    Post by: Jeff Witt, Feb 3, 2022 in forum: XJ Technical Chat
  9. Jeff Witt
    Post

    Upjetting an otherwise stock bike, and a top end rebuild

    I think this link came from somewhere on xjbikes.com I found it very helpful to understand everything that goes into jetting your carb's. It made...
    Post by: Jeff Witt, Nov 18, 2021 in forum: XJ Technical Chat
  10. Jeff Witt
    Post

    Opinions sought xj650 valve clearance

    I'm assuming that you rechecked the .38 on #4 Intake. The range for intake is 0.11-0.15 M & M's that seems wildly out of range. In any case you...
    Post by: Jeff Witt, Nov 18, 2021 in forum: XJ Technical Chat
  11. Jeff Witt
    Post

    STARTER RELAY OR BUTTON ISSUE?

    Sam If I am reading this correctly you have an 82 with the original brake lines? Big Fitz put up a great post about Why you need to replace your...
    Post by: Jeff Witt, Nov 18, 2021 in forum: XJ Technical Chat
  12. Jeff Witt
    Post

    I can't get the carb bowl drain screws out...

    I bought the rebuild kit from Amazon which included new bowl drain screws made out of brass. I only used the bowl gaskets, drain screws and float...
    Post by: Jeff Witt, Nov 17, 2021 in forum: XJ Technical Chat
  13. Jeff Witt
    Post

    Where to source Carb rebuild in Europe for xj 650

    I measured the ID of the fuel supply pipes by measuring the the diameter of the groove then I measured the diameter of the fuel inlet in the carb...
    Post by: Jeff Witt, Nov 16, 2021 in forum: XJ Technical Chat
  14. Jeff Witt
    Post

    Where to source Carb rebuild in Europe for xj 650

    I read on this forum about the "X" rings from McMaster Carr. $8.00 for 100 of them. I used them in my carb rebuild and have no vacuum leaks or...
    Post by: Jeff Witt, Nov 13, 2021 in forum: XJ Technical Chat
  15. Jeff Witt
    Post

    STARTER RELAY OR BUTTON ISSUE?

    What exactly do you mean by bridging the solenoid? If you short across the terminal lugs you will not test the solenoid that will simply bypass...
    Post by: Jeff Witt, Nov 9, 2021 in forum: XJ Technical Chat
  16. Jeff Witt
    Post

    Jetting woes

    Jake750, I was able to pull the needles out from the top of all 4 carbs on my XJ650 after pulling the tank. You may need to do a little...
    Post by: Jeff Witt, Oct 28, 2021 in forum: XJ Technical Chat
  17. Jeff Witt
    Post

    1982 xj650 maxim carbs

    Levi, There is an interesting thread on Pods vs Airbox here https://www.xjbikes.com/forums/threads/good-information-on-pods-vs-airbox.113230/ I...
    Post by: Jeff Witt, Oct 28, 2021 in forum: XJ Modifications
  18. Jeff Witt
    Post

    XJ650K idle circuit running rich

    Ok the idle was high because the adjustment for the cold start fuel enrichment was holding it open when the lever was fully closed. Made quick...
    Post by: Jeff Witt, Oct 11, 2021 in forum: XJ Technical Chat
  19. Jeff Witt
    Post

    XJ650K idle circuit running rich

    Rooster53 that was it. The manual was wrong. I was able to swap the air jets without removing the carbs just pulled the tank and a little careful...
    Post by: Jeff Witt, Oct 11, 2021 in forum: XJ Technical Chat
  20. Jeff Witt
    Post

    XJ650K idle circuit running rich

    I think Rooster53 may have something here. The Haines Manual shows the Main jet (050)on top and the Pilot jet (205) below it. I think we can say...
    Post by: Jeff Witt, Oct 11, 2021 in forum: XJ Technical Chat
  21. Jeff Witt
    Post

    XJ650K idle circuit running rich

    Thanks for the suggestion Rooster53. I'll have to remove the carbs again to check that. I'm 95% sure that I did put them back in the correct order...
    Post by: Jeff Witt, Oct 11, 2021 in forum: XJ Technical Chat
  22. Jeff Witt
    Post

    XJ650K idle circuit running rich

    Actually I am the previous owner. I bought the bike in 1983 with 2300 miles on it while I was in the Army. After I got out, graduated college, got...
    Post by: Jeff Witt, Oct 11, 2021 in forum: XJ Technical Chat
  23. Jeff Witt
    Post

    XJ650K idle circuit running rich

    You are correct "Tried everything I could think of" is a completely useless statement. So I started out by shimming the valves, the bike has 27K...
    Post by: Jeff Witt, Oct 11, 2021 in forum: XJ Technical Chat
  24. Jeff Witt
    Thread

    XJ650K idle circuit running rich

    Looking for some advice on tuning. I've rebuilt the carbs and read all the posts about getting them clean. The holes for the idle jet in the bowl...
    Thread by: Jeff Witt, Oct 10, 2021, 14 replies, in forum: XJ Technical Chat
  25. Jeff Witt
    Post

    Front Brake Issue - '81 XJ650 Maxim

    I had the same problem on my 83 XJ650k. I think there may have been an air bubble right at the top by the master cylinder. With the bike on the...
    Post by: Jeff Witt, Sep 29, 2021 in forum: XJ Technical Chat
  26. Jeff Witt
    Post

    spark plugs

    The ones I got directly from NGK are the bpr7es 5534 they do have the threaded on stud so it can be removed easily. Can someone direct me to an...
    Post by: Jeff Witt, Aug 31, 2021 in forum: XJ Technical Chat
  27. Jeff Witt
    Post

    spark plugs

    I ordered some NGK's directly from NGK for my 83 XJ650 on July 30th they are shipping via USPS.
    Post by: Jeff Witt, Aug 3, 2021 in forum: XJ Technical Chat
Showing results 1 to 27 of 27
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