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  1. Surfrat28

    1979 XS650SF - Simplified Electrical Diagram

    Hey guys I have done a little more digging and found this diagram. Wanted to see if anyone had any thoughts on if it can be used for the 79 XS650SF year. This is a new engine to me and I have it as a donor engine to my old one. If it is stock can I use the new Pamco Electrical Ignition on...
  2. Surfrat28

    New Engine and simple wire diagram

    Hey everyone stoked to get a donor engine to replace my current crappy engine that I don’t have time to fix. 1. 2F0-171615..... not sure which bike this is I wanted to say 1978 XS650SE but not sure. 2. does anyone have a simplified wire diagram for this bike?? It is completely stock engine...
  3. Surfrat28

    Top End Noise maybe a rod knock?

    Anyone with any advice or knowledge of this sound would help. I have found a video/thread that had the exact sound that I have on my XS650SG. In the thread it was never solved or finished back in 2016. Again this is not my engine in the video, it just has the exact sound that I have. I...
  4. Surfrat28

    XSCharge PMA System on 1980 XS650SG

    Hey guys back to work on the XS650. Hope everyone is doing well! Model: 1980 XS650SG I am rebuilding the engine since last yr I had issues with the cam shaft and I figure now is the time to just rebuild the engine to get it done right. I am looking to get a PMA System that would fit my model...
  5. Surfrat28

    For Sale - 1979/80 Yamaha XS650SG Gas Tank and Front End

    Hey guys I have some left over parts from my recent build and have the following parts. All parts have come off my 1979/80 Yamaha XS650SG. I do have some Yamaha DT125 and DT175 parts in the storage if anyone is looking. DM for pictures will be going to storage to snag sometime this week...
  6. Surfrat28

    Camshaft/Rocker arm Replacement

    Stuck on adjusting the valves. Well Ive gotten myself into another pickle before Born Free 11 last week. It started with just getting the bike finished to overnighting a camshaft kit and rocker arms from mikesXS. I have a 1980 Yamaha XS650SG that currently started ticking at the top. It was...
  7. Surfrat28

    1979 Yamaha XS650 Chopper Build

    My name is AR and I have been building this bike for a year now off and on with the help of this forum and the amazing people nice enough to respond to my past threads. Just wanted to share my progress on the build through this year. I had bought this bike from a garage completely stock only...
  8. Surfrat28

    21 inch Mini Brake Drum Chopper Wheel Locking up

    Hey guys, I am adding the final touches to my chopper build of a 1979 xs650SG and I have added a springer front end and ended up getting the 21" mini brake drum chopper wheel from lowbrow. I have it set up and trust me I know that this brake doesn't have great or little stopping power. however...
  9. Surfrat28

    Rear Brake not bleeding/Pressurizing

    Hey guys hope all is well! I have spent most of the day trying multiple things on my rear brake system on my 1980 XS650SG and have had no luck. I have recently purchased a new rear master cylinder from mikesxs and I am still having the same issue. There are no brake oil leaks and I can't get it...
  10. Surfrat28

    Electrical / Timing issue? Trying to ride to BF10

    Hey everyone! Bike: 1979 Yamaha xs650SG bored out to 707 Ignition system: Boyer ignition I just got a new battery and it was running the other day but by the end of the day it would not turn over. The lights don't look dim but I know that its not getting enough power to get it started. I...
  11. Surfrat28

    Electrical Diagram Help - Minimal Push Start Diagram

    Hey I am completing my 80 XS650 and I am adding a small push start button to the mix. My bike is bored out to the 707cc kit and I have had it kick back too many times for me to continue. Already have a bad leg and do not want to risk making it worse. I have modified a diagram that I have found...
  12. Surfrat28

    Springer Front End Spacer

    Hey guys I have currently read through all the threads regarding springers. I currently have a DNA 2" under narrow springer. I have bought 1" trailer bearings and stock xs650 racers. The only thing I know I need to do is to cut the stem nut down to match the TCbros kit (its almost half the...
  13. Surfrat28

    Springer front end

    Hey everyone! I'm thinking about changing my front end to a springer set up with a 21" spoked wheel with the mini break drum. Is there any suggestions on how to get the springer front end to fit the stock neck of a 1979/80 xs650SG model. Any suggestions would really help! Below is the front end...
  14. Surfrat28

    Timing issue

    hey guys Hope everyone is riding while the weather is great! I have a 1978 Yamaha Xs650 bored out to the 707cc. I have currently made the bike into a chopper after the fong bros XS650 style. I am currently running stock pipes without mufflers. My electrical system is the Boyer ignition system...
  15. Surfrat28

    Starting the bike and Idle Issue

    Hey everyone hope you guys had a nice Memorial Day weekend! Bike: I have an 79 xs650 bored out to the 707cc with a Boyer ignition system installed to give me the bare minimal wiring for a chopper style bike with a kick only setup. Issue: I do have spark. The only way I can get the bike to...
  16. Surfrat28

    1979 Kick Only Wiring Diagram Help

    Hey everyone in the xs650 community: My name is AR and I just recently got myself a 1979 XS650 that has been bored out. I am trying to make a chopper for BF9 and am cutting it to the wire. I have built some Yamaha café racers however, they have been simple DT's. I have never delt with an xs650...
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