How to change gear oil on mercury outboard

Wash the whole outboard with a mild grease-dissolving detergent and warm water to complete the gear oil change. All was going well until I came to change the gear lube.

Gear lube protects vital components within the gearcase or lower unit from corrosion and wear.

How to change gear oil on mercury outboard. How to Change Mercury Outboard Gear Oil - YouTube. Please subscribe to support and encourage me to create more videos. Thank youI change my Mercury Force 120 Hp outboard gear oil.

Wash the whole outboard with a mild grease-dissolving detergent and warm water to complete the gear oil change. Warnings You must bring a Mercury outboard ashore before changing the gear oil. Changing the gearcase lubricant in your 75hp and higher Mercury FourStroke outboard is routine preventive maintenance that will help keep your engine performing at its peak.

Gear lube protects vital components within the gearcase or lower unit from corrosion and wear. How to Start a Mercury Outboard Motor Ensure there is plenty of gas in the boat fuel tanks. Check your oil level and battery levels by looking at the console gauges.

Squeeze the primer bulbs on the hose that leads up to the outboard engines. Put the boat into neutral and insert your key into the ignition. Turn the key until the outboard turns over.

Prepare to Drain. First you need to ensure that your outboard is in a vertical and upright position. Thereafter you will need to locate and identify both the upper and lower Fill and Drain Plugs.

Place an oil drainage pan beneath the outboard where you will remove the bottom drain plug. Changing oil is simple. A drain screw is located on the lower gearcase.

A special wrench may be needed for the oil filter located beneath the cowling but it too can be easily removed and replaced. Dont over-tighten when you replace it and refill with the appropriate amount of oil. This step by step how-to-video will walk you through the process of changing the gear lube on your 6-cylinder Mercury Verado outboard engine.

Learn from our Mercury Expert how to change the gear lube. For this video you will need to remove the propeller. For detailed instructions on removing the prop click here.

For more information regarding your Verado please consult your Mercury Marine Verado owners. There is even a dedicated thread for discussion of that topic. Feel free to stop trying to turn this discussion of the failure of the plastic drive gear on a Mercury outboard motor which ruined the oil mixing system and required very expensive repair into something else.

Mercury Premium SAE 80W90 Gear Lube is recommended for lower units for outboards below 75 horsepower. It should not be mixed with Mercury High-Performance SAE 90 Gear Lube. Change Your Mercruiser Engine Oil.

Replace Your Mercruiser Spark Plug Wires. How much oil does a Mercury 4 stroke outboard take. Remove the filler cap from the back of the powerhead then fill the outboard with 3 quarts of Mercury 4-stroke marine engine oil and replace the filler cap.

What is the best 75W140 synthetic gear oil. List of Top-Rated Best 75W-140 Synthetic Gear Oil. Remove the oil vent screw and washer from the right side of the outboard just above the anti-cavitation plate.

Put a drain pan under the lower unit then remove the oil drainfill screw and washer from the right side of the outboard at the bottom of the gearcase. Another reason to change the oil annually. Most folks change their gear oil when the engine is winterized.

If the lower unit suffers a seal failure during summer operation-water can enter the gear drive casing. If the engine is stored in freezing temps over the winter the wateroil mix in the drive can freeze and burst the casing a huge expense. QUICKSILVER GEAR LUBRICANT FUEL TREATMENT LINEUP Gear Lubricants Premium Gear Lube 80W-90 - For Outboard lower units below 75hp High Performance Gear Lube SAE 90 - Extends gear life in extreme conditions including high-speed and high-horsepower applications Fuel Care System 1.

Quickare Add to every fill-up. Im trying to re-commission my Mercury 33hp 2-stroke outboard that has been laid up for the last 5 seasons. All was going well until I came to change the gear lube.

I drained out the old oil which had the look of fresh oil with no signs of water ingression but cannot for the life of me squeeze fresh oil up to the overflow hole. Whats more convenient than using our simple Mercury Direct Online Diagrams to shop from the convenience of your home. Simply enter the original model or serial number assigned to your outboard motor by Mercury Marine.

Mercury uses a specific system when assigning either serial or model numbers to their Mercury Outboard Motors however either of these can be used to lookup OEM parts. To change the oil open 12 and 3 with the engine vertical let all the oil drain. Fill through 1 until oil comes out 2.

Let stand for about 12 hour to let any air rise and top off through 1 until oil again flows out 2. Tighten all plugs firmly. Best to use marine grade lower unit oil.

It comes in various weights AND also synthetic. The process of changing your oil is relatively simple. Having your catch pan in place beneath the drain you want to use the screwdriver to remove the lower drain plug.

This stage can be somewhat tricky if the housing has become corroded. Most sterndrive and outboard manufacturers advise you to change the gearcase oil in your lower unit every 100 hours or once a year whichever comes first. Clean oil is critical for protecting the heavily loaded gears in your lower unit and preventing expensive damage.

Servicing the lower unit is a simple job that you can easily do yourself.