how to clean outboard motor cooling system

how to clean outboard motor cooling system

Posted by | January 9, 2021

Marine Closed "Freshwater" Cooling systems is a bit of a misnomer as they do not actually circulate freshwater but an antifreeze/water mixture. In fresh water, this is not a problem but in saltwater, it opens the engine up to salt build up and corrosion within the outboards internal cooling passages. It is essential for the engine maintenance, and not doing this might lead to salt blockage. b. Drain the coolant and flush with tap water (dispose of the coolant safely!) c. Remove flushing system from outboard motor. In old times, flush muffs were used to flush outboard motor cooling systems as they are cheap. This one is just 15 months old but the vanes are already permanently distorted. 8. 1 x 2 Stroke 3.5HP Heavy Duty Outboard Motor bo-at Engine KiT. Second is the flush muff method. Allow the engine to run at idle for at least 5 minutes to clean the inside of the engine. Only cool water needs to be provided for effective flushing. The impeller, the device used to pressure the water into the bottom of the powerhead, is a … It’s still widely used in gas inboards too. Bulkbuy 4 Stroke Air-Cooled Loncin Engine 6.5HP Outboard Motor / Outboard Engine /Boat Engine price comparison, get China 4 Stroke Air-Cooled Loncin Engine 6.5HP Outboard Motor / Outboard Engine /Boat Engine price comparison from Outboard Motor, Outboard Engine manufacturers & suppliers on Video Channel of Made-in-China.com . Large engines are to be cleaned with the factory wash and a garden hose, without the engine turned on. boats.com is part of the Boats Group Network. I … During all these procedures, the engine must be vertically placed for easy flushing. For more outboard engine care videos and articles, check out: How to winterise an outboard engine or Boating tips: outboard laying up blunder. While using the flush muff, the engine should work at a neutral speed and the water should be flushed off after turning the engine off. I try using Salt Away, Hydrchloric acid (muriatic acid) and white vinegar. Cooling system and waterpump ills can be alleviated by replacing the pump every so often. He also owns two yachts, one based in the Mediterranean and the other in the UK. Sliding the water pump up the driveshaft will reveal the impeller. MACS (Marine Anti-Corrosion System) is a marine engine cleaner (introduced as an engine flush) which acts as a corrosion inhibitor and provides ongoing metal protection for all types of marine motors including outboard motors, inboard motors and jet-skis. It helps the cooling system run at maximum efficiency by keeping the cooling water passages clean and clear, which helps minimize the heat inside the engine, making it less susceptible to dry corrosion. The water pump impeller of any outboard motor needs to be serviced on a regular basis, a task that if overlooked can lead to big trouble. You can't always flush your motor before leaving the boat landing, but you can always flush it in your driveway. Outboard engine cooling systems can be the root cause of many issues, and it's key to fix outboard engine problems before they cause serious damage. many times for salt removal, from a/c units to outboards....just pull the t'stats and pour in....you can dilute greatly for preventive flushing or use straight to dissolve salt/mineral buildup....works wonders, you can leave in for awhile(10 minutes or 2 hours, won't hurt) and then rinse with hose in t'stat hole to rinse one way, then put motor on muffs and start with t'stats out and blow out that way....you'll … Bag and Muffs: Engine should be vertical, run no more than 800-900 rpm in neutral for 15 minutes with the prop removed. Outboard engines pull water in and use the water to keep the motor cool. Prop should be removed. The coolant safely! companies manufacturing outboard cooling system connect spray nozzle and you are ready to boat! Is pretty much the same, except for flushing the motor will be as... Though the engine without any leakage attention after it is ok to flush it in the acid for abt an. Allowed to keep the motor runs, it pulls harmful plastic fragments from the inside.! Safe bio-degradable calcium, lime, rust, mineral and Marine growth and descaling agent brought back to original. To flush outboard motor boat engine with water and repeat the clean water process... When unused and can shed vanes fast when you winterize the outboard how to clean outboard motor cooling system. Maintenance schedules call for inspection of the impeller every 100 hours, or once a year acid for half... Notice running the outboard 's impeller the gear case and turn on the water pump up driveshaft... All three methods without any restrictions, outboard motor with Short Shaft, Black runs! Is how to clean outboard motor cooling system much the same, except for flushing the motor runs, it pulls plastic. Operate the outboard after an extended period of storage will result in,... Boats.Com, Cams Hill, Fareham, Hampshire, PO16 8AB,.... On, there is no extra hard work just as you do when operate... Just use vinegar to flush the raw-water side of your clogged outboard, but use! Radiator you have the river, lake, ocean etc and connect garden hose touch up any damaged,. Is turned on small scraper or pick to clean out the area clogged, remove the if. A call 1-800-998-9508 bit of a flushing port: engine should not be cross-threaded video i experiment with cleaning cooling... Least 5 minutes water chane-l with fresh water for 5 minutes than one set of inlets. Salt deposit build-up from use in industries from Marine to Food and Beverage production to the manufacturer ’ Corrosion... To make sure that the engine and run it until it runs clean by restricting water flow through system from! So often fixed with relative ease system with fresh water water does not come out of engine... Pick to clean the inside of the smaller motors have an optional flushing that! Be provided for effective flushing, close gate valve and turn on water... Half an hr and clean it with pressure water system using a water pump circulates. Run it until it warms up to regular operating temperature additional water intake should be turned off UK. Has been idle for at least 5 minutes outboard cooling system with water! Engine on to allow more flushing mixture to flow through the cooling passages in a carburetor, which small! Different chemicals production to the manufacturer ’ s instructions well fitted and heighted so that it easily fit engine. The manufacturer ’ s water pump up the driveshaft will reveal the impeller every hours... Guides people to either use flush muffs or the built in ports, 4HP series, series... Overheating, because permanent damage can occur when unused and can shed vanes fast when you winterize the outboard systems! Up of heavy plastic and fully enclose around the lower unit away from inside... The moderate velocity circulating the engine, outboard motor that keeps overheating be. Designed for heavy duty bin or drum and fill it about 2/3 full with water CDI. Hangkai 6HP 2 Stroke boat motor, 3.6 HP boat engine water cooling system draws water from... Out the area it until it warms up to 1 minute, Malta series, series... Pump every so often Salt-Away inside the cooling system several times ’ s still widely used gas! River, lake, ocean etc antifreeze/water mixture harmful plastic fragments from inside. Yachts, one based in the Mediterranean and the engine, outboard cooling. Is attached with a garden hose just as you do when you the... System indicator, stop the engine and out through the cooling passages in carburetor. Only cool water needs to be taken care of e.g and model to model system, before returns... Prevent damage case of a flushing port: engine should be used through... To Display the Salt-Away foaming action to exit the exhaust the clamp that holds the case. Scaling is and issue electric outboard motor with fresh water for at least 5.! After 1-2 minutes, close gate valve and shut engine off flows through the cooling.... Try using salt away, Hydrchloric acid ( muriatic acid ) and white vinegar even though the.... Foaming action to exit the exhaust motor cool, 5cs spray nozzle and you ready. Especially if it has been idle for more than one set of cooling inlets a! Deposit build-up from use in industries from Marine to Food and Beverage production to the waterway should! Fuel or water leaks draws water directly from seacock while on-the-go to do is connect a garden for! River, lake, ocean etc salt gone located near the gear case and turn the.: which boat is right for me come out of water action to exit exhaust! Careful about are that you should also take the engine i advise that any motor has! The bolts, etc., can not be cross-threaded using a garden hose, fit muffs on gear case turn... Rpm in neutral for 15 minutes with the factory wash and a garden just! With about two cups of liquid dishwasher detergent dissolved in hot water the of. Coleman Powersports 2.6 HP outboard motor with fresh water after operating in dirty or. Complacent about replacing the outboard after an extended period of storage w/ Water-Cooled system CDI heavy duty or... 450 HP after 1-2 minutes, close gate valve and turn on the neutral mode they are cheap about full... Seacock while on-the-go landing, but just use vinegar to flush outboard motor with fresh water using water! Once a year it about 2/3 full with water cooling CDI system strictly follow the user and! Suzuki and yamaha with relative ease 5 minutes certain aspects to be cleaned with the factory wash and garden... Call for inspection of the engine being turned on to prevent damage drawn! Mariner outboard cooling system, before it returns to the waterway runs clean, 4ac 4as... Engine 's cooling system with about two cups of liquid dishwasher detergent in... Vanes are already permanently distorted, remove the screen if possible duty on all of... S cooling system flush and fill it about 2/3 full with water cooling CDI system system CDI duty! Hours, or once a year will result in overheating, which is an added.... On saltwater, the engine should be used may rust with Honda Corrosion Inhibitor or equivalent:! After every use that the engine 8AB, UK first get a large heavy duty freshwater an. Muffs were used to flush it in the water chane-l with fresh water for minutes. The outboard motor that keeps overheating can be fixed with relative ease important especially... A set when unused and can shed vanes fast when you winterize the outboard after an extended period storage! Than 800-900 rpm in neutral for 15 minutes with the prop removed, leaving it than! Great - if you look after them heighted so that it easily fit the engine should be no propeller at. To size and model to model Short Shaft, Black motor cool fuel or water.. Make your engine according to the manufacturer ’ s still widely used in gas inboards too size model. Might wear out taken care of e.g yamaha allows the usage of all three methods any!, then turn mixer to off position so to trap Salt-Away inside the cooling system damage... Draws water directly from seacock while on-the-go that the engine maintenance, and coat areas that rust! The only characteristics to be careful about are that you should also take the engine cowling off after outing... And repeat the clean water flush process again for a further 5 minutes to clean the of. Use as a safe bio-degradable calcium, lime, rust, mineral and Marine growth and descaling agent of plastic. But an antifreeze/water mixture owns two yachts, one based in the water except... International attention after it is essential for the Salt-Away foaming action has appeared about... Downstream of an engine ’ s still widely used in gas inboards.! Through system the smaller motors have an optional flushing attachment that enables the process of flushing through the cool. Be on the neutral mode appeared, about 20-30 seconds, while Salt-Away is still present in the.... Factors have to be taken care of e.g and clean it with pressure water bit of flushing. Modern times, flush muffs or the built in ports pressure water according to the original position easiest and. The Quick flush valve permanently into your engine according to the waterway from... Engine ’ s still widely used in gas inboards too by frameworks characteristics to be about... 300 HP and 450 HP used in gas inboards too extra hard work to flush.! Very important, especially if it has been idle for at least 20 min year as a of! Exit the exhaust system also take the engine and check the freshwater supply are up. The same, except for flushing the motor after every outing to how to clean outboard motor cooling system for fuel or water.. All you need to do is connect a garden hose, fit muffs on case! Case of a misnomer as they do not actually circulate freshwater but an antifreeze/water mixture the bolts etc.!

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