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Top 10 Winterization Tips

TEN HOT TIPS

TO PREPARE YOUR BOAT

FOR THE COLD WINTER MONTHS

Preparation Will Help Ensure Trouble Free Boating Next Spring,
Say Experts at Sierra International
It may seem strange, but winter “time off” can be especially hard on your boat.
Extended periods of inactivity actually accelerate wear and tear and can contribute to
breakdowns next season. Left unchecked, corrosion will spread (remember, rust never
sleeps), moisture can intrude and freeze, lubrication can congeal and neglect can take
root over the long, cold months. Put another way, if you don’t get your boat ready for
storage the “deferred maintenance” of a busy season can come back to haunt you
come springtime. The last thing you want to face on that first warm spring day on the
water is a broken boat and a hefty repair bill.
For these reasons, it’s vitally important to get your boat ready for that “long winter’s nap”with a proper autumn lay-up. Even if you don’t live in a place where the waters freezeand the snow piles deep on the ground, following these ten tips will keep your boat “ship shape” and ready for action after an extended period of storage.

 

1. Start With a Clean Machine. A clean boat will weather the time off better and will
reduce the work necessary when the time comes to take her out again. Wash the
topsides, bottom and deck (with a coat of wax on the topsides too) and clean all
hardware and trim. Check for any blistering in fiberglass boats, especially for boats that
spend extended periods in the water. If any blisters are found, treat and repair these
problems. Don’t forget to clean windscreens as well as any bimini tops, spray hoods
and the like. Let all canvas dry thoroughly before neatly storing these away. If possible,
remove all canvas from the boat and store indoors. A boat that starts its winter holiday
clean will help keep dirt and corrosion from getting a foothold, and will be much quicker
to get ready in spring.
 
2. Flush the Cooling System. For inboard and stern drive boats with raw water cooling
systems, thoroughly flush the engine with fresh water to remove salt, dirt and corrosion.
In extreme climate areas you should also run anti-freeze into the cooling system by
attaching a pickup hose from a container of anti-freeze to the motor’s water pump or
removing the thermostat and its housing and pouring anti-freeze directly into the
cylinder block. Outboard motors should be flushed with freshwater and all water should
be drained from the engine.
 
3. Prepare the Fuel System. Top off your fuel tank to avoid build-up of condensation
over months of storage. Change the fuel filter at the end of the season (if your boat isn’t
already equipped with one, install a Sierra water separating fuel filter). Add a marine fuel
stabilizer (such as Sierra Universal Fuel Stabilizer) to the fuel tank as per instructions to
reduce the build-up of gum and varnish, and to keep the fuel and entire fuel system
clean during storage. After adding stabilizer to the tank, run the engine for a few minutes
to ensure it circulates through the system.
 
4. Treat Your Engine Right. Taking the time to treat your outboard or sterndrive engine
will help remove build-up and protect internal engine components during storage. For
example, Sierra Carbon Cleaner aerosol is an easy way to thoroughly remove gum,
varnish and carbon deposits from internal engine parts; clean intake ports valves,
pistons and combustion chambers, and free sticky rings on two- or four-stroke engines.
Sierra Combustion Cleaner can also be run through the fuel system to dissolve gum
and varnish, remove internal carbon deposits, displace moisture and stabilize fuel
during storage. A key component of this off-season regimen is treatment with Sierra
Fogging Oil, a specialized storage oil designed to protect the inside of the engine
against rust and corrosion. Simply spray the fogging oil through the air intakes while the
engine is running. It is formulated to leave a protective chemical film over internal
engine surfaces without leaving a greasy residue or causing smoke when the engine is
re-started. It’s also a good idea to spray fogging oil on a soft rag and apply a light coat
to visible areas of the engine exterior.
 
5. Oil’s Well That Ends Well. Every end-of-season checklist should include a healthy
dose of lubrication. Change the engine oil and oil filter on stern drive, inboard engines
and four-stroke outboards. This should be done after the engine is slightly warmed up to
help flush out sediment and impurities with the discarded oil. Refill the engine with the
appropriate oil based on manufacturer’s recommendations. For high-performance
engines, consider using Sierra’s new FC-W Synthetic 10W30 engine oil, designed for
extended protection under high operating temperatures and extreme conditions. Then
move on to draining and re-filling your boat’s outdrive gear case or outboard lower unit,
as any water or impurities can freeze and expand in cold weather, causing damage. Be
on the lookout for water intrusion — which usually causes gear oil to look “milky” and
discolored — as you drain the gear case. If moisture is present, this could indicate
leaking seals that need to be inspected and repaired.
 
6. Lubricate the Little Things. Don’t overlook the many small but critical systems that
should be lubricated regularly — especially before long periods of storage. On
sterndrive boats for example, make sure to apply marine grease to the fittings on the
sterndrive gimbal bearing and engine coupler not forgetting those on the steering tilt
tube and engine trim mechanism. Go around the boat and lightly apply a moisturedisplacing
lubricant to the myriad moving metal parts onboard such as hinges, latches,
push-pull switches, linkages, ratchet mounts, bow rollers and the like. For boats on
trailers, this an ideal time to grease the trailer wheel bearings using Sierra Wheel
Bearing Grease. If you haven’t done it at least once during the season, pull and inspect
the wheel bearings for wear and water intrusion, and repack or replace as necessary.
Remove the propeller to inspect for fishing line and shaft seal damage, then coat the
propeller shaft with quality water resistant grease before replacing the propeller.
 
7. Check Her Over From Bow to Stern. This is the best time to catch small problems
before they become major ones. Get up close and personal, and use your eyes to
visually go over items that can lead to trouble. For example, inspect mechanical
steering and controls for signs of worn cables, broken cable insulation, visible corrosion
or rough operation - Teleflex Marine offers a full range of replacement controls and
cables. Check fluid levels on hydraulic steering and fill as necessary, while keeping an
eye out for signs of leakage around seals and fittings. Visually check fuses and wiring
connections, looking for signs of corrosion, loose connections or broken insulation.
Inspect fuel lines and cooling hoses for signs of exterior cracking, bulging or leakage,
especially around bends, hose barbs and connections. Take particular care to test all
hose clamps for tightness and signs of corrosion. Also inspect all engine belts, and if
excessive wear or cracking is noted, replace them with Sierra OEM replacement hoses
and belts. Check sacrificial zinc anodes and replace those that are more than 50-
percent dissolved. Also pay attention to the rubber bellows or “boots” on your outdrive
and rigging tubes, as holes in these can allow damaging moisture and dirt to get in.
8. Don’t Give Moisture a Fighting Chance. Check the bilges, removing any standing
water and cleaning up any dirt or oil. Do the same with any lockers, drawers, live wells,
fish holds or storage areas. Remove all objects and clean these spaces thoroughly, then
place commercial moisture absorbers to eliminate mould and mildew during the long offseason.
Remove all cushions, clean them well (especially underneath where mildew
tends to form) and prop them up on edge to allow air to circulate.
 
9. Remove and Store Whatever You Can. It’s bad to have all the “stuff” onboard your
boat subjected to the elements during the off-season. It also can contribute to the
gathering of dirt and moisture in your vessel’s storage areas. Get those lifejackets, dock
lines, fire extinguishers, flares, fenders, ski ropes and the rest of your gear out of the
boat and store them indoors over the winter. To protect against damage and theft, any
GPS/chart plotters, radar displays, VHF radios and other electronics that are bracket
mounted should be removed and the loose cable ends/connectors wrapped in electrical
tape. Marine batteries should be carefully removed and stored in a cool, dry location off
the ground such as a garage workbench. Clean the battery cable ends and place a light
coat of Sierra White Lithium Grease on the cables and the battery terminals. It’s a good
idea to check electrolyte levels and bring your battery up to full state-of charge every 30
days during storage. If your boat will be stored on its trailer, block up the trailer axles
and remove the tires to prevent “flat spots” that can occur from sitting for long periods of
time, and sidewall cracking from exposure to sunlight, cold and moisture.
 
10. Cover Your Assets…and Check Them Often. The best option is to store your
boat in an enclosed, climate-controlled facility. However, this is not practical in many
cases. If your boat will be stored outdoors, a good cover is your first line of defence
against the elements. In severe climates, many owners choose to have their vessels
professionally shrink-wrapped, which is expensive but creates a tight seal against the
elements. The majority must make do with covering their boats themselves. A top
quality, custom-fitted cover is best, with commercially available supports used to prop up
the cover to prevent water from pooling in low spots. Park your boat under a protective
canopy or in a garage if possible. If this isn’t possible, store it in a location that
minimizes exposure to wind, weather, falling leaves and sunlight. Keep the cover clean
and free of snow, debris and water — especially after storms — and after checking
underneath to make sure everything is OK, tighten everything down.
Use these general guidelines to help tuck your boat in for her winter’s nap — and hitting
the water next season will be as smooth and easy as a warm spring afternoon.
While these tips will certainly get you started, there will be variations depending on the
type of boat you own. Your boat and engine owner’s manuals can offer specific
recommendations for winter preparation.
In addition, your boat dealer or marine service engineer can offer advice, supplies or
even perform many of the more complicated procedures for you.

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