There are a multitude of diagrams under the 830 injector pump. When you go back to the site scroll down the list to line 4132 which is the later model 830 built from 1974, 3 cyl tractor.
When you enter a search for 830 lots of models come up, on Deere's website. You have to then select from the list.
Give me more to go on, do you have a single cartridge block fuel filter? Roosa Master injector pump? Tractor sn would help too.