Re: oil change pump
Get a 10 ft. piece of 3/8 ID clear plastic tubing.
Slide one end over the Dip Stick Tube.
Feed the other end out the bilge plug hole to a gallon jug on the ground.
Siphon the oil out.
If you are not getting payed by the hour to do the job, and you can afford to wait 20-30 minutes for it to drain......
Compare $5 for the tubing you may already have, to $50 for a pump that you are going to use once a year.
While you are waiting for the Engine to drain; Start draining the Lower Prop unit.