L3200 hood latch has a pull to the outside located on the left side of the tractor, under the front of the hood. Basically a wire with a loop for a finger to pull, and an L at the other end to shift the latch off of a pin. If you can't look at the parts diagram, I may be able to post a picture.
If the pull is broken, then a length of wire with an L at the latch end, and catch the hole in the latch mechanism with the L. Latch must move to the outside direction to disengage from pin on hood.