Bad outboard lower units can give the operator shifting issues, and other signs will include water in the gear lube, metallic particles on the drain screw magnet, clunking sounds when shifted, or the loss of the ability to shift into gears.
How much does a Mercruiser OutDrive cost?
New 2022 Mercury Alpha-1 Gen II OutDrive – $2,849.00
Alpha-1 Gen II SternDrive/OutDrive NEW Genuine Mercruiser OEM NEW Alpha-1 Gen II SternDrive / OutDrive.
Can you rebuild an OutDrive?
Refurbished Replacement Outdrives
Refurbished outdrives can cost quite a bit less, but can still come with a warranty for your peace of mind. Jasper Marine remanufactures both engine and outdrives and rebuilds their products to at least OEM specs.
What causes lower unit water?
You have seals on both sides of your water pump. You can have a warped lower unit which will allow water to seep in; even with new seals. You can have a touch or roughness on a seal seat that doesn’t let a seal seal. Take the lower unit to a “good” dealer and have them go through your lower unit.
What does Milky lower unit oil mean?
Milky oil means water has gotten into the lower unit. It is usually a bad propshaft seal, rather than a waterpump seal. But it is a job for your local shop. They’ll replace the seals and pressure check the lower unit. They’ll also be able to tell you if anything more than seals is required.
Which MerCruiser OutDrive is best?
With over 20 MerCruiser sterndrive systems to choose from, the Bravo Series and Alpha One outdrives clearly stand out as the top choices for boaters. The power of a sterndrive vs inboard engine on a boat can not be matched when it comes to MerCruiser outdrives.
How long do stern drives last?
It’s also common to expect between 10-15 years out of a well-used sterndrive and transom assembly, and then it’s a matter of continual repairs or replacing it once and for all. Sterndrives are a faster and more efficient design, as they are mounted to the rear and produce less drag.
How does an outdrive work?
The outdrive resembles the bottom half of an outboard motor and is composed of two sub-units: an upper containing a driveshaft connected through the transom to an engine which transmits power to a 90-degree-angle gearbox; and the lower containing a vertical driveshaft receiving power from the upper unit gearbox,
What Volvo Penta outdrive do I have?
Find the metal tag that contains the outdrive’s product name, specification number and serial number. Every Volvo Penta drive contains a tag. You may find the metal tag on a decal on the top or side of the outdrive. The tag contains a series of letters and numbers.
How do I test my lower unit oil for water?
Tips
- If a bit of oil drains from the vent hole of the outboard lower unit, rub it between your thumb and forefinger. There will be a few tiny metal shavings, smaller than a grain of sand, in the oil; that’s normal gear wear.
- If the oil coming from the vent is milky, that’s the result of water in the oil.
Can you overfill lower unit oil?
To answer, yes you can. I have seen guys that will pump it till the oil comes out the top which is correct, but will then put the top screw in & then give a few more pumps for “good measure”. This usually causes overfilling as well as a slight pressurizing if they get that bottom screw in real fast.
What color is lower unit oil?
What Color Should Lower Unit Gear Oil Be? Brand new gear oil should be a shade of blue, green, brown, or yellow, depending on the brand. Used gear oil should be a black/dark variation of the brand new color. Knowing what these colors mean and also the other colors you will encounter is important.
Do you have to drain lower unit oil for winter?
Drain the crankcase oil.
The reason you need to change the oil is because contaminants in “dirty” oil can corrode and shorten the life of engine parts during winter storage.Most four-stroke outboards have an oil sump drain plug located below the crankcase at the back or side of the motor’s leg.
What does water in gear oil look like?
It’s unusual for industrial gear oil to have a milky appearance because it has good water separation properties. Free water should be settling down to the bottom of the reservoir tank, which can easily be drained out. However, it is possible for water to contaminate a gear box.
Why is my lower unit oil black?
The black lube and burnt smell,just means overdue. Nothing worse then the smell of burnt lower unit fluid,cause of a gear failure.It used to clean a few guys out of our shop. Biggest thing to look for is metal shavings or evidence of water.
Is lower unit oil the same as gear oil?
Lower units contain hypoid gears (think ring and pinion, like a car differential) so they demand extreme pressure additives. The marine gear oil you choose will depend on the size of your marine engine.
Why is my lower unit oil GREY?
Gray in the lower unit oil is indicative of metal shavings coloring the oil. In the case of gear work; or even a power head replacment, it is not unusual to have a bit more than average shavings work loose as all the parts seat in.
Are MerCruiser outdrives interchangeable?
The Alpha One® and Gen II, which are tradenames of MerCruiser®, have a dominant position in the marketplace. The outdrives offered by SEI are fully compatible and interchangeable with MerCruiser® outdrives. The MerCruiser® outdrive is very common in 17 to 25 ft runabout boats.
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