As I stated in a previos post I just purchased a used BCS 715 that has a Kohler Magnum 8 engine. I am attempting to check the transmission oil but I can find no filler screw or any other place on the transmission area to check the oil level. There is a drain plug in the very bottom of the transmission and what appears to be some sort of vent rubber cap on the top of the transmission. The tiller runs fine and engages in all the gears but I want to check and replace the transmission oil. Hopefully it is not DRY! If so I got screwed. The former owner told me he did not know where to check the transmission oil and he has had the unit for 3 years. I does appear to run fine though.