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Recent Activity

Activity stream for all registered members at Yamaha XS400 Forum.

  1. amc49 replied to the thread 1977 xs400 backfiring.

    Lucky you..........You might check what the octane booster used there is. Ethanol is commonly used for that too and if the law doesn't...

    Sep 22, 2020 at 9:12 PM
  2. 77xs400 replied to the thread 1977 xs400 backfiring.

    I only use 95octane no ethanol fuel in all my smaller engines just for that reason,

    Sep 22, 2020 at 8:03 PM
  3. AlexH replied to the thread 1982 Seca no spark after rainstorm.

    When trying to start the bike, I measure about 9V going into the coils. This seems like it has two causes: When the starter is engaged,...

    Sep 22, 2020 at 4:43 PM
  4. amc49 replied to the thread 1981 idling issue.

    Lower your idle speed using the SPEED screw not mixture one. Too high will run rich and add to the smell. Compression has nothing to do...

    Sep 22, 2020 at 4:30 PM
  5. jwin replied to the thread 1981 idling issue.

    Thanks all. Just an update on where I'm at: I've been mostly doing electrical work and have managed to get the electric starter working...

    Sep 22, 2020 at 3:12 PM
  6. ivecyri set their home page.

    http://cbd-oleje.pl

    Sep 22, 2020 at 2:38 PM
  7. ivecyri set their occupation to nauczycielka zajęc artystycznych.

    Sep 22, 2020 at 2:38 PM
  8. ivecyri moved from Gąbin to Bełchatów.

    Sep 22, 2020 at 2:38 PM
  9. Scotty4 replied to the thread New Here.

    I've got a clients house to paint before its too cold and a new born! I'll mess with it this week sometime.

    Sep 22, 2020 at 12:30 PM
  10. omaqowug set their home page.

    http://bioolejek.pl

    Sep 22, 2020 at 11:36 AM
  11. omaqowug set their occupation to Inżynier Technik.

    Sep 22, 2020 at 11:36 AM
  12. omaqowug moved from Debrzno to Giżycko.

    Sep 22, 2020 at 11:36 AM
  13. AmbientMoto replied to the thread Glad to be here and the XS that was meant to be....

    Thanks for the vote of confidence:) Should be a fun project.

    Sep 22, 2020 at 10:28 AM
  14. AmbientMoto replied to the thread Glad to be here and the XS that was meant to be....

    Right! Fortunately, we aren't going for a 100% stock restore. Part of the deal of this bike was a few welding chores; I was bummed that...

    Sep 22, 2020 at 10:27 AM
  15. ATXSOUTHAUSTIN replied to the thread New Here.

    Scotty!! Let us know how your doing when you get a chance. You'll be purring/pulling before you know it. Is a great feeling and I want...

    Sep 22, 2020 at 7:58 AM
  16. ATXSOUTHAUSTIN replied to the thread New Here.

    That's exactly it. Is been decades since I've worked on a 70's bike. EPA was all up in everyone's business. Thanks for the refresher...

    Sep 22, 2020 at 7:53 AM
  17. amc49 replied to the thread 1977 xs400 backfiring.

    If they use ethanol in your local fuel that is likely contributing to it, it messes the carbs up pretty quick. Even faster if bike not...

    Sep 21, 2020 at 10:02 PM
  18. amc49 replied to the thread Question about replacing batteries.

    You won't find much of anything on bleeder screw sizes, you simply have to compare threads until you find out what you have.

    Sep 21, 2020 at 9:57 PM
  19. amc49 replied to the thread New Here.

    Yes, to confuse the innocent. There IS a slight difference though. The mixture screw can allow curb idle to be leaner but when you...

    Sep 21, 2020 at 9:49 PM
  20. ATXSOUTHAUSTIN replied to the thread New Here.

    Thanks amc. It's all coming back now. If they're behind the slides they obviously aren't getting fuel. The air only screws are commonly...

    Sep 21, 2020 at 7:59 PM
  21. Fuzz1961 replied to the thread Wanted - Leaking pet cock.

    Thank you both. That's valuable info 2 me.

    Sep 21, 2020 at 7:49 PM
  22. Scotty4 replied to the thread New Here.

    I may get a new rubber cap for the left side and a new line for the right to petcock. Just want to rule that out.

    Sep 21, 2020 at 7:24 PM
  23. Scotty4 liked ATXSOUTHAUSTIN's post in the thread New Here.

    Xschris, do the pre 80 bikes also turn the mixture screws in the opposite direction? Never owned one before 80. Still learning every...

    Sep 21, 2020 at 7:24 PM
  24. Scotty4 liked xschris's post in the thread New Here.

    Turning them out for richer. 77-79 just uses large spring and needle. Nothing like the 80-82 bikes. Float height will greatly effect tuning.

    Sep 21, 2020 at 7:24 PM
  25. Scotty4 liked amc49's post in the thread New Here.

    If the mixture (fuel + air) screws are between the carb slide and engine then they richen going counterclockwise. If they are between...

    Sep 21, 2020 at 7:24 PM
  26. Jamps replied to the thread Question about replacing batteries.

    I meant that during the first cold startup I couldn’t use any choke. But maybe the garage was warm enough that the bike wasn’t that...

    Sep 21, 2020 at 6:54 PM
  27. 77xs400 replied to the thread 1977 xs400 backfiring.

    Thanks for the reply, It is backfiring through the exhaust just idling only on the left side It does pop a little on the intake when you...

    Sep 21, 2020 at 6:42 PM
  28. amc49 replied to the thread Question about replacing batteries.

    It's normal behavior. You must use choke to start but then you get it off as quickly as you can without killing the motor.

    Sep 21, 2020 at 6:13 PM
  29. amc49 replied to the thread New Here.

    If the mixture (fuel + air) screws are between the carb slide and engine then they richen going counterclockwise. If they are between...

    Sep 21, 2020 at 6:10 PM
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