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  1. Excess Impulse

    For Sale - 1980 XS 400 parts for sale

    Sorry it took a little while to get back to you, both side covers are still available, one has been painted black, the other is red like a maroon red and the emblems go with them. Emblems in fair condition, but I have them. $25 for all.
  2. Excess Impulse

    For Sale - 1980 XS 400 parts for sale

    It's been awhile since I posted the ad, I will have to check and see what I still have. I will get back with you soon.
  3. Excess Impulse

    For Sale - 1980 XS 400 parts for sale

    I'd rather sell them as a set, how about $7 for both, you pay the post?
  4. Excess Impulse

    For Sale - 1980 XS 400 1 low price for all parts PAGE 2

    Tried to delete this heading for this post but unable to sorry
  5. Excess Impulse

    For Sale - 1980 XS 400 parts for sale

    Update: While I have no use for these parts, I realize there are some who would like their bike to be all original. I don't want to toss them out, I would rather have them used to further the restoration and preservation of these great little bikes. I am located in SW Michigan and I don't...
  6. Excess Impulse

    External battery for electric start

    I was thinking the bike's starter motor was grounded to the frame through the mounting bolts? So running a ground cable from the remote battery to the bike's frame should work? I will have to remove the starter if I do this and make another cable anyway as I was being lazy when I stripped the...
  7. Excess Impulse

    External battery for electric start

    That's pretty cool, a little more elaborate than I was thinking but I like it!
  8. Excess Impulse

    External battery for electric start

    With the arrival of winter and riding season a few months off, I'm hoping to use the time to do some maintenance and upgrades to a couple of my bikes. I have a 1980 XS400 that I have enjoyed working on as my first ever build, transforming it from a cruiser to what might be referred to as a...
  9. Excess Impulse

    1980 Special

    Looks like it's been more than a year since I have posted any new pictures of my XS so I thought I would share a couple. I still have a list of things I would still like to do; paint, clean up the wiring and delete some unused connectors, make the seat removable with no tools, etc. but for now...
  10. Excess Impulse

    Front disk brake dragging!

    Thought I should post an update to my brake problem as I have resolved it. I apologize for taking so long but must admit Im a little embarrassed as the issue was not the new brake line, new caliper piston and seal, nor was it the master cylinder. It was me, and an assembly error. I had put the...
  11. Excess Impulse

    Front disk brake dragging!

    https://hvccycle.net/yamaha-brake-caliper-pistons/ I ordered a new piston from here. That has to be the issue. As mentioned in my last post I removed, disassembled, and cleaned the master cylinder and made sure the tiny port is open. This seems to be confirmed to me as I can put my finger tip...
  12. Excess Impulse

    Front disk brake dragging!

    Thought pictures might help. I got the master apart and it was still clean. I don't think it's the culprit. I removed the brake line from the master and put my finger tip over the hole and when I squeeze the lever I feel pressure pushing out, and when I release the handle there is suction so the...
  13. Excess Impulse

    Front disk brake dragging!

    . Yes I was hoping to tear into it today and re-clean and check everything real good. That does make sense that the fluid cannot return so the pressure won't release. Just got an email saying my master was damaged in shipment, no more in stock, refund sent. Argh!:banghead: I will thoroughly...
  14. Excess Impulse

    Front disk brake dragging!

    I thank you for your reply, though the drag on the brake is more than slight, it is noticeably harder to turn wheel and if ridden I can smell it burning and it gets hot.So until I get this resolved I'm not riding it. I have been researching the cause of what retracts the piston in the caliper...
  15. Excess Impulse

    Front disk brake dragging!

    BTW this is a 1980 SOHC and single disk.
  16. Excess Impulse

    Front disk brake dragging!

    Thought I would post an update. Previously that was the case, when i held the brake and cracked the bleeder, no air but only fluid came out, then the brake released. As soon as I applied the brake again it started dragging again. The sliders are all clean and move freely. I received my new HEL...
  17. Excess Impulse

    Front disk brake dragging!

    Thought I would post a quick update to this thread. After cleaning and rebuilding the caliper and the original master cylinder and still having problems with front brake drag, I figured the problem must be the 37 year old brake line, so I ordered the braided stainless one from the good folks at...
  18. Excess Impulse

    Front disk brake dragging!

    Dave, Thanks for your reply. Yes I did stop riding it. After the 1st time out I had thought it was fixed but soon found out it was still hanging up. I have cleaned and rebuilt the master cylinder, as well as the caliper, installing new seals in both. Have new brake pads and fluid. I didn't...
  19. Excess Impulse

    Front disk brake dragging!

    I have a 1980 XS400 , I have rebuilt the caliper with new seals, cleaned up the piston, rebuilt the master cylinder, have new brake pads, and have all new brake fluid in it. It is Okay to use DOT 4 fluid isn't it? After doing the rebuilds it was a challenge to get the air out but was able...
  20. Excess Impulse

    Wanted - Speedometer cable holder

    Bookmarked that link! No I didn't even think to look for original parts from Yamaha, I always look at the aftermarket suppliers. The part numbers defiantly help when searching for the part. I have seen this part on other sites, prices vary wildly, but shipping alone was more than the part...
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