Decommissioning For Storage (Winterizing); Drainage Of Fresh Water System; Head And Holding Tanks; Thru-Hulls - Tayana 37 Operation & Maintenance Manual

C. DECOMMISSIONING FOR STORAGE (Winterizing)
Winterizing consists of removing gear and equipment that may be damaged,
removing liquids that may freeze, thorough cleaning of the yacht, and protecting
the yacht from the elements. Procedures for winterizing are described below:

1. Drainage of fresh water system

NOTE: Non-toxic anti-freeze for fresh water systems is available from many
marine supply stores. This is recommended, since it will protect the system from
any accumulations of water that were missed in the draining operations. Follow the
instructions on the can. We understand that some owners have used vodka for the
same purpose- with favorable results.

2. Head and holding tanks

3. Thru-hulls

4. Engine

a. Open faucets and run pump until water flow stops.
b. Disconnect hoses at pump and use air pressure to blow out water in low spots.
c. Remove drain plug on bottom fitting of water heater.
d. Pump hand pump until water flow stops.
e. Leave all faucet valves in open position.
a. Winterize head by following the procedure given in the manufacturer's manual.
Empty holding tank and rinse with fresh water and pump out again.
a. For in-water storage, all thru-hull valves, except cockpit scupper valves,
should be closed.
b. For out-of-water storage, leave valves open.
a. Engine coolant. Two acceptable methods of winterizing the engine cooling
system are:
(1). Complete drainage- involves closing thruhulls, removing all drain plugs
on the engine and muffler, and opening drain petcocks per
manufacturer's instruction. Store with expansion tank cap off and
salt water pump cover loose.
(2). Anti-freeze: Drain system per instructions above. Close petcocks and
replace drain plugs. Disconnect intake side of raw water pump hose
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