The pump can't be used on all motors. The pump actually screws in. My 50hp can be filled with the pump. My 9.9hp uses what you bought. Basically drain the fluid, once drained put the nozzle of the oil tight to the bottom hole, and squeeze till the oil come out of the top screw. Oh, ya don't remove the top screw, just loosen it. When the oil comes out the to screw, tighten the screw, and replace the bottom screw. This is how I do it every year.