I always did my own winterizing when I had my OMC's and Merc.

How do you winterize the 250 HPDI?

I don't see the 2 screws on the lower unit, I only see the top one. How do you empty it?

Fogging? do I simply remove the plugs, sprays each hole and turn the engine over?

I already put stabilizer in the gas tanks and turn my gas swith off and ran the engine till it stalled.

I also changed my water seperator filter. Do I have to replace the fuel filter on the engine?

Thanks for the help...