Little help with my new 1976 Boler

[Iflinn]

I finally found a great 1976 Boler.... Love it. Needs a little TLC but in great shape. I just tried the furnace out.... Pilot lit perfectly but I can't get much flame. It's 30 degrees here today .... Does this little furnace somehow know to shut down when it's warm? It's a Surburban. Seems like the cook top works fine.... I've read a few posts but I can't seem to figure this out.

Any help is greatly appreciated.


Thanks


Ian