New to the board. thanks in advance. A buddy's XS650 - Mid '70's vintage. Hitachi Starter.
Bike was sitting a LOOOONNNNNGGG time. Removed starter. was filled with a mixture of oil and gas, as was the crank case. I guess gravity fed the fuel from the tank through 1 or both carbs, and then past an intake valve, past piston rings, to crank case.
Question- Are brushes and seal Available? Where? Do you need more info from bike? Year, serial #, etc.?
Of course you will find a ton of good wrenching info right here if you spend some time searching the site. If you can't find something specific however, just ask. There are a lot of friendly folk here always willing to help others.
Post by retiredgentleman on Feb 4, 2010 11:44:47 GMT -5
There are actually 2 seals. 1 for the starter motor shaft and 1 for the engine casing. The most difficult thing is removing the 2 long screws that hold the starter motor together. I had to cut a slot into the head of one screw in order to use a slot screwdriver.
The starter motor is very well built.When you take it apart you may find the brushes are not worn much. New length is 0.630" and replace is 0.280". I found mine at 0.587", so I did not replace them.
I also found the commutator to have minimal wear. I just used some Autosol polishing compound to clean up the copper segments. You can use any polishing compound, even tooth paste would likely work.
Be aware that the casing oil seal does not fit evenly alined with the engine casing. 3bond 1104 gasket sealant is put around the outer edge of the seal and then push the seal into the casing.........but only part way. Then use the starter motor itself as a guide to push and aline the seal correctly...............see picture.
Centering the armature in the brush holder, it appears that one of the two brushes is barely (at best) contacting the commutator. I really like the idea of tooth paste to polish the commutator. I have used it elsewhere (like on my teeth), but had not considered it for this application (what do you recommend, Pearl Drops? Crest? Colgate?). Also, I had not considered replacing the seal on the crank case. But it seems like a good idea, since the starter removal is a bit tricky (putting it back will be even more fun). I couldn't find that seal on the Biker.net exploded views. I'm sure it's there, but which drawing? Lucky for me, I had no trouble disassembling the starter motor.
Thanks again for the help! I'll keep you posted on the progress. Neilski
Post by retiredgentleman on Feb 5, 2010 11:42:00 GMT -5
As for the brush length.............go by the dimensions I listed above. If one brush is barely touching, it must be quite short, and needs to be replaced. I prefer Colgate.........for sparkling clean teeth ;D
mwb122: Another newbie here. I appreciate the page and being accepted. Just brought home a 78 xs650 special. She is running good after a little TLC. So far I have cleaned the carbs, battery, fixed leaking clutch push rod oil seal. Now what to do with her.
Jan 3, 2014 8:50:55 GMT -5
mwb122: Bought a 79 special in 79. Was a great bike then and it is great to see they have such a large following!!!
Jan 3, 2014 10:30:04 GMT -5
oldcodgerhenry: Gooday ,all .new Pamco basic ign replacement arrived yesterday ,But the coil wires are different color ,to the trigger wires ,don't want to fry new one.
Jan 29, 2014 15:41:34 GMT -5
floris: at this moment, my XS is with Jerry v.d. Heiden, a well known XS tuner in the Netherlands.
Feb 4, 2014 16:28:08 GMT -5
floris: The engine become's a rephased 270 crank.
Feb 4, 2014 16:28:37 GMT -5
floris: Also a bigbore cilinder set of 890 cc.
Feb 4, 2014 16:29:10 GMT -5
floris: Also a long stroke is gona be applied, what makes the total about approx. 1000cc.
Feb 4, 2014 16:30:12 GMT -5
floris: 965 cc to be exact.
Feb 4, 2014 16:30:35 GMT -5
mahanlee: need help identifying a gas tank i bought on Ebay for my 79 xs. it has a tall neck and the new mikesxs cap i ordered will not work on it. any suggestions?
Apr 10, 2014 13:43:49 GMT -5
mahanlee: Need help identifying this part. It came in a box from the previous owner. I have searched Google and Ebay and haven't found something similar. It has a short bolt with a flat side. The only place I figure it goes is underneath the battery box.
Apr 23, 2014 8:14:07 GMT -5
djonesxs650: Batteryless setup for '78 XS650 with points ignition....I need a wiring schematic, simple as possible...does anyone know of any posts that can help?
Jun 28, 2014 16:02:09 GMT -5
gwc1147: I snapped the outer push rod for the clutch while removing front sprocket. I want to change to the longer rod. 77 650d I would also like to replace the seal and front bushing. How do I remove the broken rod? Any help please.
Aug 10, 2014 20:29:00 GMT -5
boxertwin1: I have a 76' XS and need petcocks for the tank. I don't want to rebuild, I want new ones. Weird, but you can only seem to buy right-sided ones. Any source for both sides?
Aug 21, 2014 14:56:18 GMT -5
piscean: would like to know how to change my bulb on 81 650 Yahama left front?
Oct 18, 2014 12:46:30 GMT -5
pablosixfivezero: if your carbs aren't balanced, can that throw off your timing?
Jan 6, 2015 0:08:08 GMT -5
grizld1: Pablo, I suspect you may be joking here, but if the motor's shaking hard enough, I guess it could loosen the ignition fasteners enough to throw the timing off.
Jan 7, 2015 19:37:40 GMT -5
bikest: I'm looking for a list of front disc brakes(rotors) that will interchange with my 77 XS rotors. I down loaded the list from this site a few years ago but can't seem to locate it again? Thanks!
Mar 6, 2015 10:15:43 GMT -5
grizld1: The list you want was posted by jetmechmarty in this thread: www.xs650temp.proboards.com/thread/17334/brake-discs
Mar 18, 2015 7:40:19 GMT -5