Search found 9 matches
- Mon Sep 02, 2019 9:09 am
- Forum: Technical Discussion
- Topic: 1981 CB650c Won't Start
- Replies: 16
- Views: 21299
Re: 1981 CB650c Won't Start
Another small update. Been working on the bike a little bit here and there, got the revving of the engine to stop, turns out the tank just needed more air flow when the bike goes to drink. I also fixed the problem of my “floppy float” with some new float needles and a bit of tinkering to make the fl...
- Mon Jan 28, 2019 12:26 pm
- Forum: Technical Discussion
- Topic: 1981 CB650c Won't Start
- Replies: 16
- Views: 21299
Re: 1981 CB650c Won't Start
Hey everyone, been a while since I’ve posted on this thread, so I figured I should give an update. Just got to rebuilding the starter clutch over the weekend and I’m happy to say that it went extremely well! I didn’t have many problems along the way either. So I got her fired up without hand crankin...
- Fri Jun 29, 2018 9:12 pm
- Forum: Technical Discussion
- Topic: 1981 CB650c Won't Start
- Replies: 16
- Views: 21299
1981 CB650c Won't Start
Don't worry about bending any tabs. Your issue is definitely with those float needles. Also, the plastic floats you have are not adjustable. If you put the float needles side by side, are they the same size? If not, what is down in the needle seat that is keeping them from going all the way in? Spr...
- Sat Jun 23, 2018 11:37 am
- Forum: Technical Discussion
- Topic: 1981 CB650c Won't Start
- Replies: 16
- Views: 21299
Re: 1981 CB650c Won't Start
ALSO
I'm looking for info if anyone can tell me if I'd need to replace my starter clutch for sure (before I get any deeper into this thing, I'd rather not if I don't have to)
So I took a video of what's happening when I try to start the bike.
https://youtu.be/ythm_mnn74A
I'm looking for info if anyone can tell me if I'd need to replace my starter clutch for sure (before I get any deeper into this thing, I'd rather not if I don't have to)
So I took a video of what's happening when I try to start the bike.
https://youtu.be/ythm_mnn74A
- Sat Jun 23, 2018 11:34 am
- Forum: Technical Discussion
- Topic: 1981 CB650c Won't Start
- Replies: 16
- Views: 21299
Re: 1981 CB650c Won't Start
Did your kits include new float needles? If not, check the ones on the "floppy" floats and make sure the spring in the needle is springy. Also, try tapping on the float bowls with a screwdriver handle or something similar. Often this is all it takes to make them seat and stop leaking. The...
- Sat Jun 23, 2018 11:30 am
- Forum: Technical Discussion
- Topic: 1981 CB650c Won't Start
- Replies: 16
- Views: 21299
Re: 1981 CB650c Won't Start
1.Compression test should be done with the carbs held open (full throttle) or better off the bike altogether. 2.Bend the tabs on the floats to get them all sitting at the correct height. The fuel is flowing out of the over flow because the floats are not at the right height. Glad your making progre...
- Sun Jun 17, 2018 6:43 pm
- Forum: Technical Discussion
- Topic: 1981 CB650c Won't Start
- Replies: 16
- Views: 21299
Re: 1981 CB650c Won't Start
UPDATE So my carb rebuild kits came in and I've been through them and replaced what was in need of repair. I noticed that 2 of my floats are sitting kind of flat and had no springiness to them when you apply pressure. The good one on the left, the floppy one on the right http://cb650.segarac.com/Pic...
- Fri Jun 08, 2018 11:21 am
- Forum: Technical Discussion
- Topic: 1981 CB650c Won't Start
- Replies: 16
- Views: 21299
Re: 1981 CB650c Won't Start
Have you checked out the carb cleaning manual here in the General Discussion forum? The carbs wont be exactly like your's, but the techniques are basically the same. Drop about a tablespoon of oil in each cylinder through the spark plug hole. If the compression improves, your problem it most likely...
- Wed Jun 06, 2018 11:03 pm
- Forum: Technical Discussion
- Topic: 1981 CB650c Won't Start
- Replies: 16
- Views: 21299
1981 CB650c Won't Start
Hey everyone. First-time poster, but I've been lurking on here for the past couple weeks and I am looking for some advice. I just picked up a 1981 CB650c for $800 about 3 weeks ago from this older lady who said the bike had belonged to her husband that high-tailed it out of the province and wasn't c...