where is starter motor located.merc 01.c220 cdi auto?

same problem as previous.15 amp fuse keeps blowing when turning key.have tried new starter relay.no luck there.every one suggests new starter motor.where is it located ?have removed bottom metal panel under engine but cant find it.is it one of the units,with belts at the front of engine or do i have to remove more panels underneath to locate ?electrician coming tomorrow but will need to remove old unit for part exchange deal. help !!!!