Correct. Lower the plastic cover and the timer is towards the rear. Replace it with the new unit and you should be good to go.
Once you have replaced the timer keep an eye on the back of the freezer for a week. Just to be sure it doesnt start to ice up. If it does then the heating of the evaporator heating element may have damaged it. Remove th evback cover and replace the heating element. It is part #618 in the breakdown.
Thank you for the accept.