remove open grassbox cutout switch?

You can, but only if you are idiot enough to disable a safety related item. It might be your kiddie who gets injured.

You could replace it, of course.

Less than sixty seconds with a Google search leads one to this page. Find item 23

http://www.powertoolspares.com/index.php/tool/lawnflite/spares-and-accessories-for-908/13bq509n6112003/mtd008596/spares/

Anon
October 2016