Remove the drain plugs located on either side of the engine block.
How many drain plugs mercruiser 5 7.
Mercruiser ze damage 5 0 merc the hull truth winterize your boat the family handyman omc cobra winterization procedure wiring diagram for a 1984 305 chevy get draining mercruiser 5 7 page 1 iboats boating forums 10076832mercruiser 350 mag mpi drain plugs boat talk chaparral boatsmercruiser 350 mag mpi drain plugs boat talk chaparral boatsmercruiser.
There are 6 that i remove before winter each year.
Make sure that when you remove the drain plug that the water drains and that the passage is not plugged with rust.
Then i removed all six hoses from the thermostat.
This has been keeping me up at night so i m hoping somebody here can shed some light.
In il i used to do a full winterization but with the shorter milder winters here in nc this is pretty much all i do.
I removed the drain plugs from both exhaust manifolds from each side of the block.
Winterizing mercruiser 5 7 draining all the water too old to reply kevin c smith 2005 12 13 22 27 28 utc.