Went out and bought myself a chain saw. Got tired of muscling dads old Husqvarna 50 for smaller jobs. I bout a huskie 235, with a 16inch bar. smaller saw for smaller clearing trails limbs. etc. I took it out for the first time and cut with it, and it didnt use any bar oil. Adjusted chain and tried again. It wouldnt keep the chain tight or lube the bar. Any ideas why? I took it back and got it exchanged. I havent had a chance to cut with the new one yet but hopefully it doesnt have the same problem.