decompression

Would appreciate advice as to the "normal" operating position for the decompression lever on a Univeral 5432. From a center position, you can push the lever downward & it will stay in the down position (sort of clicks as you push it down); alternatively & from the center position, the lever can...

The Manual for the Universal Model 12 lists a decompression lever to assist with cold starting. Does anyone have a clue where this lever is located?