Most of the procedures apply to any Type 4 engine in a 72-79 bus. If you don't see particular parts then you've got carbs. I've tagged the carb specific photos. There might be slight differences, such as the way the heater booster is wired but you'll get the general idea.
All the reactions of photosynthesis that are not directly dependent upon light are known as the dark reactions. The dark reactions occur whether there is light present or not. The dark reactions occur in the part of the chloroplast known as the stroma.
when does a dark reaction occur? light reaction chlorophyll traps sunlight and uses energy to split the water molecule in half; hydrogen combines with a carrier molecule and is taken to the dark reaction; ADP + P+ energy -->ATP-used in dark reaction