Not likely unless you can't move the shift arm at all. The shifter arm extends through the cover to another arm that fits between the fork that shifts the forward reverse cones back and forth. Its not at all like a clutch
It is very easy to not get the cover located right so that the center "neutral" detent does not work. Its also easy for the shift arm to pop out of the fork, before the cover is all the way on..
First you have to put the cover on making sure the shift finger stays in the fork. Then you have to put the corner bolts in on all four corners about 1/2 way in. Then while holding the shifter in the middle / neutral, you tighten down the cover, going around the sides. before its tight, you may need to tap a side or two to get it centered. The cover has about 1/8" play in each direction so getting it just right is actually not that easy.
The one time I did it (some blonde chic dropped a washer in the oil
fill port requiring the cover to be removed) it took a few try's.. Once its together, test that you have neutral. If the shifter goes direct from forward to reverse then the detent is not engaged and you have to recenter the cover.