Mercruiser Service Manual Winterization
Propylene glycol antifreeze with a rust inhibitor is approved for use in the raw water cooling system for cold weather storage purposes ONLY. However, if your engine is equipped with a closed cooling system, you should always use a 50/50 mixture of ethylene glycol antifreeze and water in this system. Even if you don't live in a freezing climate, you should still use an antifreeze/water mixture rather than plain water. Antifreeze mixtures have superior anti-corrosion and boil over protection properties. Follow the instructions for normal storage preparation found in the Operation, Maintenance & Warranty manual.
- How to Winterize a Boat Step-By-Step on the Mercruiser 3.0 TKS. Please make sure to follow all manuals.
- Before putting your boat away for the winter, you must first winterize the motor. Your Mercruiser 3.0 uses the water in the lake to cool the engine while boating. This water stays inside the engine. Failure to remove the water will cause freezing. As the water freezes, it expands. This will cause the engine block to.
Winterize Mercruiser 4.3. Winterize mercruiser 4.0. Winterize mercruiser 5.7. Winterize mercruiser 3.0.
When preparing to store a boat for extended periods of two months or more, it is best to completely remove all fuel from the tank. If it is difficult or not possible to remove the fuel, maintaining a full tank of fuel with a fuel stabilizer added to provide fuel stability and corrosion protection is recommended. It is best to add the stabilizer and fuel treatment to the tank at the recommended dosage, run the engine for 10 minutes to allow the system to be cleaned, shut off the fuel valve to interrupt the fuel supply and allow the engine to run until it stops, and top off the tank until it’s full to reduce the amount of exchange with the air that might bring in condensation.
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Do not cap the tank vent and do not fill with fuel to the point of overflowing. Some extra space should be maintained in the tank to allow for expansion and contraction of the fuel with temperature changes. A partially full tank is not recommended because the void space above the fuel allows air movement that can bring in water through condensation as the air temperature moves up and down. This condensation could potentially become a problem. Mercury Marine Quickstor can help maintain fuel systems in storage.
It contains oxidation inhibitors to reduce oxidation and gum formation, metal-chelating agents to protect metal components from corrosion, water-absorbing agents to reduce the presence of free water, and dispersants to help suspend and disperse debris. When placing the boat back in service, be sure to reopen the fuel valve to the engine. The drain system on your engine is NOT intended to replace full winterization. It is for extending your boating season by allowing the cooling system to be drained after use if there is a risk of light freezing weather and you will be boating the next day. For full extended winter storage, after completely draining the cooling system, Mercury MerCruiser requires the use of propylene glycol antifreeze (with a rust inhibitor for marine engines) in the seawater section of the cooling system.
The fuel system must have fuel stabilizer added and the system must be fogged with 2-cycle oil. We recommend that your product be winterized by an. Damage caused by freezing or improper winterization is NOT covered by the limited factory warranty. This is also a good time to have scheduled maintenance performed on your engine by your dealer.
Pour fuel stabilizer into the gas tank and fill it with fresh fuel. This will reduce condensation inside the tank. Remove the drain plug at the rear of the boat and allow any water to drain out. Open the engine compartment. Check the water hoses and replace them if they are cracked or soft.
Connect the engine flush unit to a garden hose and position it over the water intake slots on the stern drive just above the propeller. Turn on the water to the hose. Remove the nut over the spark arrestor with a box wrench and remove the unit from the carburetor. Turn on the switch to the blower on the dash to remove any gasoline vapors. Start the motor and run it for a few minutes.
Turn off the fuel supply and spray the fogging oil directly into the carburetor until the engine stalls. Shut down the engine, turn off the water supply and remove the flush unit. Replace the spark arrestor and wrap it with plastic. Use electrical tape to secure the plastic around the base of the arrestor.
Remove the spark plugs with a socket wrench and spray about a tablespoon of fogging oil into each cylinder. Replace the spark plugs and crank the engine a few times with the starter to lube the cylinder walls. Locate the drain plugs referred to in the owners manual. Open the petcocks with an open-end wrench and allow all of the water to drain out of the engine block.
Remove one end of the water hoses with a flat screwdriver and pour some RV antifreeze into each of them. Replace the hoses.
Mercruiser Service Manual Winterization Of Sprinkler
This will prevent any water trapped in the hoses from freezing. Remove the oil dipstick and check the oil cleanliness and level. Add or change the oil as necessary. Lower the stern drive. Place a flat container under the unit to capture the stern drive lubricant. You should check and change the stern drive oil each season. If water has entered the stern drive and is allowed to sit all winter, the drive will be severely damaged.
Remove the top vent screw with a large flat screwdriver. 1998 polaris sportsman 500 starter. Remove the lower drain screw and allow the lubricant to drain into the container. Screw the stern drive pump onto the new container of lubricant and place the end of the pump hose in the lower drain screw. Pump the fluid into the stern drive cavity until you notice lubricant exiting out the vent screw. Replace the vent screw while holding the lubricant tube in place. Remove the hose and attach the drain screw.
Leave the stern drive in the lower position throughout the winter to allow proper lubrication of the gears. Remove the propeller with an open end or adjustable wrench and lube the splines with bearing grease.
Replace the propeller. Disconnect the battery and charge it. Periodically check it throughout the winter.
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