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Recent Activity

Activity stream for all registered members at Yamaha XS400 Forum.

  1. JPaganel replied to the thread Novice here. Need diagnosis..

    This plug is brass, and it's way bigger than you think. It's like a 1/4 inch deep.

    Nov 29, 2020 at 10:43 AM
  2. BBS360 replied to the thread Regulator and Kickstart alternatives.

    Looks like the finned one is probably just a rectifier. Would most likely have more wires to regulate the field coil. I would still...

    Nov 29, 2020 at 1:24 AM
  3. amc49 replied to the thread How do I figure out what jets to put in my carb?.

    Likely, if it is not like a good breathing true header. They need to be the correct jets for the bike though, if somebody has messed...

    Nov 28, 2020 at 10:54 PM
  4. wingstar replied to the thread How do I figure out what jets to put in my carb?.

    Can I get away with not changing the jets if I replace the exhaust system then?

    Nov 28, 2020 at 10:47 PM
  5. amc49 replied to the thread 1981 XS 400 H Troubleshooting Help.

    Pull plug to see if wet or black, fouled out. (edit) Never mind, I see they ARE fouled from pics on other thread.

    Nov 28, 2020 at 9:25 PM
  6. Jrod replied to the thread Flooding issue?.

    Ok thanks! I'll go buy some of the NGK tomorrow and try again. I'll buy some new plug caps too. Fingers crossed

    Nov 28, 2020 at 7:50 PM
  7. Jrod replied to the thread Flooding issue?.

    I also bought some of the diamond fire E3 plugs and tried those today, but I didn't get anything different using those.

    Nov 28, 2020 at 7:30 PM
  8. Jrod attached a file to the thread Flooding issue?.

    Pics of the spark plugs are attached. Gap is set to .028 on each. When I pulled the carbs the brass floats were set around 22mm, so I...

    20201128_200905.jpg 20201128_200916.jpg Nov 28, 2020 at 7:26 PM
  9. Jrod posted a new thread.

    Flooding issue?

    Troubleshooting some issues and trying to get my bike to start! I pulled the carb apart yesterday and cleaned it. The jets are the...

    Forum: The Garage

    Nov 28, 2020 at 6:35 PM
  10. Rocktech replied to the thread Novice here. Need diagnosis..

    Nevermind, I found an answer on another thread, I have to drill it out!

    Nov 28, 2020 at 4:17 PM
  11. Rocktech attached a file to the thread Novice here. Need diagnosis..

    Okay update, compression was better when I added oil. Therefor determining it was the piston rings I took the motor off the bike. I was...

    image.jpg image.jpg Nov 28, 2020 at 4:12 PM
  12. Jrod replied to the thread 1981 XS 400 H Troubleshooting Help.

    Ok, thanks for the tip! Any ideas on the misfiring/not firing cylinder?

    Nov 28, 2020 at 8:27 AM
  13. amc49 replied to the thread 1981 XS 400 H Troubleshooting Help.

    In one of your pics there I see two screws holding the round ignition plate with sensor down, loosening those two would allow the plate...

    Nov 27, 2020 at 8:13 PM
  14. amc49 replied to the thread How do I figure out what jets to put in my carb?.

    You should know that the OEM mufflers are big because bigger allows more space to kill sound in. Commonly replacement ones are smaller...

    Nov 27, 2020 at 8:05 PM
  15. Jrod posted a new thread.

    1981 XS 400 H Troubleshooting Help

    Hi all, newbie here. Really appreciate the people who've taken the time to assist me so far - got my XS400 started for the first time...

    20201122_180757 (1).jpg 20201122_180748 (1).jpg 20201122_180738 (1).jpg 20201122_180808 (1).jpg 20201127_145405.jpg No timing for H model.PNG

    Forum: The Garage

    Nov 27, 2020 at 3:04 PM
  16. wingstar replied to the thread How do I figure out what jets to put in my carb?.

    I don't really plan on doing any mods to this bike engine wise, but I need to replace my headpipes and get new mufflers since the ones I...

    Nov 27, 2020 at 10:02 AM
  17. amc49 replied to the thread How do I figure out what jets to put in my carb?.

    You usually prove out the need through trial and error. Beginning with whether you have the correct ones to begin with, so many people...

    Nov 27, 2020 at 6:17 AM
  18. wingstar posted a new thread.

    How do I figure out what jets to put in my carb?

    Fairly certain I read somewhere in this forum that if you get new air filter or exhaust then you have to put different jets in your...

    Forum: The Garage

    Nov 26, 2020 at 3:33 PM
  19. Ivan Mihajlovski replied to the thread Regulator and Kickstart alternatives.

    Ill take better pictures, with the connections and all and post them here.

    Nov 26, 2020 at 10:46 AM
  20. Jackie O replied to the thread Yamaha XS400 Rubber Parts - Sumo Rubber.

    Hello guys, We have now the fuel tank rubbers available on the website. The first batch is a limited stock only, so little pricier that...

    Nov 26, 2020 at 5:22 AM
  21. songshun replied to the thread Thank you!! Headlight?.

    how about go to the Amazon to buy one?

    Nov 26, 2020 at 1:39 AM
  22. JPaganel replied to the thread Regulator and Kickstart alternatives.

    It's an old bike. Previous owners may have made changes.

    Nov 25, 2020 at 10:26 AM
  23. Rizwan Akram set their home page.

    https://3amoto.com

    Nov 25, 2020 at 5:55 AM
  24. Rizwan Akram set their occupation to Leather Clothing.

    Nov 25, 2020 at 5:55 AM
  25. Rizwan Akram has a new avatar.

    Nov 25, 2020 at 5:54 AM
  26. Spitfire_X24 replied to the thread Need troubleshooting help - xs400 dies after warm-up.

    I agree with AMC49, gotta start to narrow down if it’s spark or fuel causing it.

    Nov 24, 2020 at 8:47 PM
  27. Denverdean1 replied to the thread Ignition coils.

    Okay thank you for all the info and help it has been very appreciated

    Nov 24, 2020 at 7:40 PM
  28. amc49 replied to the thread Regulator and Kickstart alternatives.

    I know if the finned one IS a rectifier or combo rec/reg it needs at least 3 wires of the same color going into it. Disregarding any...

    Nov 24, 2020 at 6:52 PM
  29. amc49 replied to the thread Need troubleshooting help - xs400 dies after warm-up.

    Have an extra new plug in pocket and quickly unplug a plug in head and plug the new plug in and grounded to head and check for spark...

    Nov 24, 2020 at 6:45 PM
  30. amc49 replied to the thread Ignition coils.

    Haven't a clue, look up xschris here onsite, he may have some good used ones.

    Nov 24, 2020 at 6:34 PM
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