Used H250 heater won't fire up

[bobd]

Hi Guy's.
Bought a used H250 heater.
Looks like it's in good condition, but won't fire up.



I pulled out the burners, and noticed two things:
When I push down on the brown pilot button, gas gets to that point(through the small aluminum tube).
I do get ba spark at that point(by the lttle orifice
However the pilot doesn't light.
Any thoughts?

Thanks