How do you fill a Mercury outboard lower unit?
Add Oil: To refill the lower unit, insert the bottle or tube into the bottom drain hole and slowly squeeze the bottle to force the oil into the lower unit.
How much oil does a MerCruiser outdrive hold?
| Brand | Model | Oz./Qts. |
|---|---|---|
| MerCruiser | Alpha One Gen II | 2.0 US Quarts |
| MerCruiser | Alpha One Gen II | 1.75 US Quarts |
| MerCruiser | Bravo One | 2.0 US |
| MerCruiser | Bravo One | 3.25 US Quarts |
How do you change oil on a Mercury 40hp engine?
NOTE: We changed the lower unit oil on a Mercury 40HP 2-stroke engine, but the process is the same or similar for most small-to-midsize outboard motors. Step 1. Remove the oil vent screw and washer from the right side of the outboard, just above the anti-cavitation plate.
Why do you need to change lower unit oil on a Mercury outboard?
Lower unit oil changes are an important part of maintaining an outboard motor. Changing the lower unit oil of a Mercury outboard provides the proper lubrication for the internal components of the motor, while removing normal shavings from the oil.
How long does it take to drain oil from Mercury?
Now remove the top drain plug; this will release the vacuum that exists and allow the oil to drain freely from the Mercury lower unit. Allow all of the oil to drain completely from the lower unit. This process can easily take between 5-10 minutes. Once all the oil has been completely drained, the lower unit will have to be re-filled.
How much lower unit oil do you need?
But if you decide to just squeeze the bottle method grab a second quart because you can only squeeze 2/3 of a quart till it won’t squeeze anymore and some fancy hand work is needed to continued till full. Re: How Much Lower Unit Oil? Thanks for the info, I was just going to purchase the pump, $11 worth of headache savings in my book.
How to Change Mercury 40HP Engine Oil & Oil Filter. Step 1. Remove the top cowling, then tilt the motor up as far as it’ll go and turn it so the drain bolt is facing downward. Step 2. Place a drain pan under the outboard, and remove the 18mm drain bolt and its nylon washer from the driveshaft housing.
What to do when you lose oil in a Mercury outboard?
Even though there is a slight vacuum there will be some loss of oil. Tighten both the lower and upper drain plugs and wipe off any oil that may have fallen on to your lower unit. A marine specific lower unit gear lubricant should only be utilized in a Mercury outboard.
Now remove the top drain plug; this will release the vacuum that exists and allow the oil to drain freely from the Mercury lower unit. Allow all of the oil to drain completely from the lower unit. This process can easily take between 5-10 minutes. Once all the oil has been completely drained, the lower unit will have to be re-filled.
How to change the oil in an outboard?
Welcome to the step-by-step guide to changing your outboard’s lower unit oil. This 8-step process is all it takes to ensure the oil in your lower unit is properly maintained. The chart at the end of this guide lists the approximate amount of oil needed to fill the lower unit of each model currently offered by Tohatsu.