How do I get the cover off lakewood 7101 Heater

SOURCE: Lakewood model 7101 oil filled radiator

visit this page for service center and/or parts
http://www.lakewoodeng.com/html/parts.html

SOURCE: put heater on a shutoff timer

Visit this page to contact a service center http://www.lakewoodeng.com/html/parts.html

SOURCE: How do you know when the lakewood 7101 needs more

Your heater is sealed and never needs any more oil than already is there. In the unlikely event when the oil leaks out - replace the whole heater.

SOURCE: Lakewood heater 7101 schematic

The power cord goes the switch terminal 1 and 3.
Terminal 2 must be the opposite of terminal 1, such that when switched on, 1 & 2 connects. Terminal 4 must be the opposite of terminal 3, such that 3 & 4 connects.
Under this setup, you may connect red to terminal 2
and black to terminal 4.
Be sure of the 1 & 2 pair, as well as the 3 & 4 pair.
then, connect the red and black wires.
Hope this will help you.

SOURCE: Lakewood Model 7101 - Need to drain the oil to dispose of it

I just drill a hole and I put old oil in my used motor oil