1973 GT250 newb

[rizin]

Well guys a buddy of mine three years ago gave me a GT250 when he moved. Life has been so busy I never got to the thing. Finally being back in my house and not my fifth wheel I started to work on it.

With fresh fuel a new battery and setting the points to .014 gap and using the ohm meter to set the left and right opening of the points with the l and r marks and some new spark plugs it runs. Since I don't have internet at the house yet I am on my phone for the time being. Next is to see if the oil pump is working. Can you guys give me a link to a good write up of how to set it since I cannot open the pdf manual on my phone. The other thing is with the bike running what voltage should I see coming out of the rectifier? Right now it is just over 12v. Working on cars most of my life for fun I know 12 is low on a 12v system. Higher potential usually to charge the battery to 12v. The other thing I had smoke coming from the head gasket area. What is the torque pattern and setting. One the head studs was finger tight hopefully the gasket is still good. Kind of doubt it. Thanks for any help you guys have to offer.

[jabcb]

The alternator has a lighting coil that is switched on only when the headlights are on.
So you need to test the voltage with & without the headlights on.

The bike does not have a voltage regulator -- it uses the battery as a voltage regulator.
It may run fine without a battery but doing so can quickly blow lightbulbs.

Start with a good battery that is charged up.
Check the voltage with the bike running.
Doesn't charge the battery @ idle. Starts charging by 2k rpm. Also check @ higher rpm.