There's only two fasteners holding the cover, the bottom has a roll pin the the cover goes over, after removing the two allen head fasteners, there isn't anything else holding the cover on, it may need a little tap from a soft faced hammer to get it loose, if it hasn't been removed in some time .
Also, remove one of the battery cables from the battery before you remove the front cover, there are 'hot' terminals in there (electrical connections that have power to them all of the time) , and you can inadvertently make contact with them with the cover, and get a 'shower of sparks' .