I figured out that the atu rod needed cleaned and lured. It was stuck in the open position all the time. Pulled it n cleaned it, put it back in. Now I can't get the bike to do anything. I got a nice POP thru the carb n figured it was 180 out. Swapped it around and got nothing. I did all I can think of but have gotten nothing but a couple backfires thru the exhaust. How can I get it right? I'm at a complete loss and need help...
Check points surfaces; if pitted, file and polish or replace, and remove any traces of oil or grease with solvent. Then set gaps, static time, and finish with strobe. Download the factory manual (free, thanks to Jean Akers' generosity) from www.biker.net or from the links posted by BubbaLeone in the General Board (thanks, Bubba!) for specifics. To check phasing, be sure that the points set that opens at 15* BTDC is connected to the coil for the cylinder in which the piston is rising into the power stroke; that cylinder will have a closed exhaust valve (loose adjuster) after the engine is turned CCW 15* to TDC.
Last Edit: Feb 19, 2012 20:43:14 GMT -5 by grizld1
I appreciate the help. The weights return to the retarded position now that the rod is cleaned and lubed. Just gotta figure the timing thing out. Got the pins lined up. ill try and reset the points gap tonight and see what happens.
I got it running tonight thanks to yall. I reset the gap and it started right up. It is much smoother, and very quiet now. I mean the exhaust is very quiet now. It was a lot louder. Why did just fixing the atu,and fixing the point gap make it quieter? Wierd
Glad to hear you're up and running, but don't stop there: check timing at idle and at full advance with a strobe, since bob weights often wear to the point that when idle timing is dialed in, high speed timing advances too far. If you find that condition, there are several fixes posted for it; look around and you'll find them.
I dont know why, but its quieter throughout the rpm range not just idle. I didnt mess with anything outside of the ignition. I had cut the stock pipes off where they met the mufflers, but welded some cheap mufflers on. they didnt make much difference in noise. now its too quiet lol.
r80rt: :)This is a splendid write up, THANK YOU!!!!
Dec 26, 2015 16:54:05 GMT -5
mashermoto: What the what is this shoutbox for? Or should I shout, WHAT THE WHAT IS THIS SHOUTBOX FOR!
May 12, 2016 22:22:21 GMT -5
motormike: Good Day ...just a FYI.. Wild Cat is this Labor Day weekend. Still go'n on. A few 650's still make the scene. Various rides at different skill levels each day.. awards dinner sunday eve. BS in the park'n lot after dinner.
Aug 23, 2016 7:57:01 GMT -5
lsettle: First post in over 6 years!
Aug 28, 2016 19:45:17 GMT -5
kardon: Wow quiet here, where did they all go.
Oct 7, 2016 2:18:13 GMT -5
gggGary: XS650.com LOL
Feb 16, 2017 20:49:02 GMT -5
buell88: Anybody have any idea who built the xs650 tracker used in the Draggin Jeans Ad on Pipeburn?
May 16, 2017 16:24:09 GMT -5
joshua: The regulator/rectifier unit I got from Mikes PMA has closer hole spacing than original. Are we supposed to mill the holes to fit?
Jun 7, 2017 19:25:58 GMT -5
joshua: My bad. I found the bracket they supplied to mount the rectifier/regulator... Uh oh. How is this meant to work? Which way is it meant to mount? Looks like I have to use some spacers or something. Good instructions would be nice.
Jun 7, 2017 22:09:52 GMT -5
craig8johnson: Not sure if this is the right spot or not but oh well...
Jul 11, 2017 18:04:15 GMT -5
craig8johnson: I'm checking the charging system. I'm afraid I might have fried the last battery. With the solid state regulator (after market) what should it be charging at. The book says, I think, 15 volts. I'm hitting 17 when revved. Is that too high?
Jul 11, 2017 18:06:19 GMT -5
gggGary: Yes 17 volts is too high, about 14 volts is max, sounds like you don't have the right regulator or it's wired wrong.
Jul 13, 2017 6:54:33 GMT -5
dean: Just saying Hello, new member who is going to fix up a 79 XS650 that has seen its better days. I will definitely have lots of questions coming up.
Jun 23, 2018 16:45:32 GMT -5
tt650: Trying to breathe life into a 1980 that's been stored (indoors) for 25 yrs. Air filters are dry rotted. Have cleaned carbs but she only runs briefly on choke then stops. Need jet setting info and other ideas that might help her idle and rev.
Jul 3, 2018 19:15:19 GMT -5
trix13: Hey everyone! New to the forum and am fighting those gremlins!! New charging system, ignition switch, coil and fuse box. Resistance is higher than normal on the ignition pick up so I'm trying to find one. No such luck yet.
Aug 16, 2018 8:50:48 GMT -5
trix13: Also, even though all of my connections are clean, I cannot seem to find out why , when at higher rpms, I hit the signals and the rpms pulse with the signals...hahah. same with the brake light. I appreciate all input!!
Aug 16, 2018 8:55:08 GMT -5
bob99: how do I post a question. I am new to the forum
Jun 6, 2019 10:52:10 GMT -5
adlpc: Hello all! Been enjoying your edifying posts and discussions - and as a fan of the XS650 since my early teenage years happy that I now own a 1980 Special which I plan to turn into a vintage half faired racer. Thank you all for being here!
Oct 1, 2019 0:58:56 GMT -5