SmartFeed, a patented feed-sensing control system, boosts operator productivity and reduces engine strain by monitoring engine rpm and controlling feed rollers. The large infeed opening simplifies feeding irregular material and reduces the need for crosscuts before feeding the chipper.Designed with ease of maintenance in mind, the BC900XL features a dripless oil filter and conveniently located grease points to help reduce service time. The patented bottom feed stop bar is strategically positioned so the operator can strike it to shut off the feed mechanism.