Mowing season is here with a vengeance! Just finished the 2nd mowing of the season then pulled my L120 into garage and removed engine. I just recently replaced a head gasket because it was dripping oil onto the exhaust. Cleared the problem up but it started burning oil 1/2 way into my cut (1 hour). I kept tabs on oil level and finished cut. I've been staring at the jack sleeve ( the long cylinder w/ 2 pulleys which the pto bolt goes through to thread into the crank. I didn't see any set screw that holds it in place. How does one go about removing this sleeve (pulley)? I plan on putting a new gasket on the oil sump and the smaller circular O ring for the oil pump. Thank you in advance and HAPPY MOWING! art