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  1. Firestone

    1981 XS400 SE matching valve cover plugs

    Hi, does anyone know any other motorcycles that have the same size valve adjustment plugs? Broke one of four and can't find a replacement anywhere.
  2. Firestone

    1981 XS400 SE valve seals

    Hi, are the outlet and inlet different sizes? 11 and 10 millimeters? I can see here that there are two and two, but they are the same code? https://www.motomike.eu/en/vehicle/yamaha-xs-400:21046/category/10400000000/?sr=30&show=gal_kombi Can't find measurements anywhere.
  3. Firestone

    Recommended petrol

    Hi! In Estonia we have 95 and 98, not the same than in US. This year 95 changed and the new one, 95E10 has 10% biocomponents. You shouldn’t drive some old cars with this petrol. What about our motorcycles? Should be fine, I don’t know much about fuels.
  4. Firestone

    Wanted - One 81 XS400 valve cover cap

    Hey! I somehow managed to broke one of mine, so if you have one extra and you don't want a fortune for it and are willing to post it to Estonia, I would be very happy.
  5. Firestone

    Karl's scrambler-bratstyle 81 XS400 SE

    Hey everybody! My name is Karl, I am now 22 years old and I'm from Estonia. Yep another one from Estonia (I reckon some of you know Sandrew, who is also from Estonia, haven't met him in person though). I apologise in advance for some grammar mistakes that I will be making in the future...
  6. Firestone

    How to raise the rear end of a 81 tank?

    I want to raise my tank so it would be level with ground. I have some ideas but I thought that maybe some of you guys have already done it and have found some simpler ways how to do it. Original mount is a bit lower and it makes it look weird in my opinion.
  7. Firestone

    Wheel diameter differences when using a wider rim

    Does anyone know how much rim width affects the height of a tire? For example if using the same 4.00 tire on a 18x2.15 and 18x1.85 rim, means that the wheel with 2.15 rim is smaller in diameter right?
  8. Firestone

    What are the dimensions of original 1977 xs360 wire wheels?

    Headline pretty much says it all :)
  9. Firestone

    Tire size and model guessing topic

    Does somebody know the mark and size of these tires? I'm guessing 16x5.00 rear and 18x4.00 front but I'm not sure and have no idea about the model.
  10. Firestone

    2A2 disc swingarm on 81 Yamaha xs400se frame?

    Is it a straight swap with no issues or does the swingarm need some modifications? I am one of the new guys and still pretty dumb :)
  11. Firestone

    Wanted - Spoked 18" wheels for 1981 Yamaha xs400se in Europe

    The rear wheel should be with a drum brake and front wheel with a disc.
  12. Firestone

    Wanted - 18" mag drum brake rear wheel in Europe

    I have been searching for ages. Been told in xs400.com that you could find them in Europe, what would be like a dream come true for me, but still, I haven't been able to find one yet.
  13. Firestone

    1977-78 xs400 tank on a 1981 xs400se?

    What do you guys think, would the more squared tank fit on the 1981 400se? I have the xs400se with the stock tank, but i kinda like how the older tank lines up with the frame. Gives it a nicer look in my opinion. 1981 Yamaha xs400se 1977-1978 Yamaha xs400 Sorry for repost, if...
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