- 12 -Clip to the power unit and adjust for length and comfort.(Photo 4-5)VI. CHAINSAW LOPPER ATTACHMENTAssemblyThis also need to be assembled and comprises the following parts:WARNING:BE SURE TO FILL THE OIL RESERVOIR WITH THE APPROPRIATE CHAIN OIL OTHERWISEYOU WILL SEIZE AND BURN OUT THE CHAINIMPORTANT:The chain must neither be too tight or too loose. You must be able to lift the chain a few mmaway from the bar.Should you need to adjust the tension, check the procedure that follows.Should you need to change the chain, check the procedure that follows.Install the guide bar and the saw chain on the gear case as followsPhoto 6Photo 4Photo 5