make sure that the oil ports are not blocked, (WITH THE CHAIN SAW OFF) take the side cover off and see if there is any sawdust blocking them. i work in the parks, and i allways use cooking oil for keeping the chain cool, its is finer and works fine, and no it wont go up on fire, or cook chips, the problem with electric chainsaw, is the blades go blunt very fast,, see if you can pick up a top end chain for it, or get the right size file to sharpen the old blade, all chainsaw blades will go blunt even if they tip off the ground/clay when running.
m, January 2014