DOWN BELOW
Make sure the propane connections are tight, the supply hose is not chafed or pinched, and test the stove and solenoid.
Get your head ready for action by removing the intake hose and pouring vinegar into it. This will dissolve much of the scale buildup in the hoses and pump body. Pump the vinegar through the system, letting it sit overnight, flush with freshwater and then follow up with a shot of Pure Ocean head lube or mineral oil.
Inspect and clean your electric bilge pump (s). Make sure the electric cable connections are sound and test the float switch. Dry the bilge thoroughly before launch, so you’ll know at a glance if there is a leak.
Test the macerator pump, if fitted, and make sure some critter hasn’t made its home in your holding tank vent.
Flush out your water system. If you’ve made the mistake of pouring antifreeze into the tank, you may have to fill and empty it a few times to get rid of the taint. If you’ve been smart and added the antifreeze just upstream of the electric pump, it won’t take long to flush out the hoses. A small dose of bleach in the penultimate tankful will clean out the system.
Open all compartments and lockers, and clean off any mildew. Vinegar is an effective mold and mildew killer, but do not mix it with bleach.
Test the batteries in the smoke and carbon monoxide detectors and replace if necessary.