motor stops when headlight turns on

[cdeines]

when I try to restart, headlight won't come on, if I wait a few minutes it will work again and I can start it (cb77) sometimes it will run for a few miles with headlight on then die?

[G-Man]

Check the battery voltage with the headlamp off and on. It sounds like you have a charging or battery fault.

G

[cdeines]

I got a new battery, I'll ride around close to home to see if it happens again, I think most of the electric "stuff" needs updating, stator looks like it's got an oily residue, if there's a seal behind it, it probably needs replacing?
Thanks for the help... much appreciated.
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[G3]

Be sure to check the battery fluid every few weeks and top to the "upper level" marker as needed. Indeed your problem does sound like a weak battery. As for the oily residue, I wouldn't worry until it becomes a full blown nuisance leak then address it. Hope your new battery remedies your trouble.

[lifewithoutparole]

I had this on my 67 S90 several years ago. I went to a friends house and my bike died on the way. After a few minutes it would start but die if I turned the headlight on. I limped home (it was dark now!) by riding back streets without the headlight, just using the streetlights. It would charge up well enough to get me through a signalized intersection with the headlight on and then it would die if I didn't turn the headlight off. It had an old batter so I got another fully charged and the same thing happened. I had a friend check my charging system and it was the stator. I got on off fleabay and now I can ride all day long with the headlight on no problem....check the stator. Happy riding.