Well, I am no mechanic but I thought I would try to change my oil in the BF40's myself. Got a great oil extractor from West Marine - did a fantastic job at sucking the oil right out of the Honda's. However, when I went to change out the filter I found I needed a wrench. Anyone know where to buy the "socket" type wrenches for the smaller filters. Locally I have only been able to find the larger ones used for cars. Any help would be appreaciated. I wouldn't mind ordering over the net or picking up. Thanks Brats. :thup