I was lucky, a friend at our club gave me a pump which hooks up to the drain plug right at the front left corner of the engine compartment....this is a black hose with a brass cap on it. Take the brass cap to a hardware store and get another, longer black hose with a male end (brass) which you will then screw on to the brass cap on the oil pan hose....then you will hook this new longer black hose & brass nipple up to any kind of pump (either manual or electric), and pump the oil out directly from the oil pan instead of trying to suck it from the pan going thru the dipstick hole by the filter....After removing all the oil (it doesn't take long) you can unscrew the old filter and using a plastic bag, drop the old filter into the plastic trash bag....a no-mess deal if you are carefull...(also wipe down everything w/paper towel)...now you have all the oil out of the pan...be sure and use some engine oil
to lubricate the new filter gasket you are going to install so it will not leak...You'll are now
done with the hard part....just be sure to clean up everything....oh yes, be sure to run
the engine for maybe 4 minutes to heat up the old oil before removing....You will not believe how clean your oil will be when you check the dipstick....now you have really clean oil....I use westerbeke filters but am probably a fool...I just know they fit and don't want to be bothered....I do this two times a year.....whether I need to or not...
Good Luck and let me know if something doesn't make sense. Patrick