Ted & David both correct...as always
Here's the set up I put together for winterizing.
You might try this using a 5 gal bucket instead of the gal jug to get the volume you need quickly.
Mat'ls req'd - rubber stopper (w/ hole) OD to fit strainer, Barbed fitting for stopper, hose w/ connection to the barbed ftg,
You might want to go larger hose - I use these for everything except engine - my yard does engine for me after pulling. The hose w/ fitting (w/o stopper) is used for fresh water by connecting to a 3 way bypass valve prior to FW pump.
The last pic is the way I do A/C to get a little head pressure as the A/C pump doesn't self prime well.