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The capacity of gear lube for each outboard engine will vary by model. The standard 150hp FourStroke (as shown in this video) has a capacity of 28 oz. Be sure you're fully draining the gearcase and refilling it from the bottom up, as shown in the video. If you have an engine other than the Mercury 150hp FourStroke shown in this video, we recommend referencing the operator's manual for the product you own.

Most automotive parts stores offer oil disposal services, as do many city and county-owned garages.

Engines kept in a wet slip will automatically drain all of the water from the powerhead and cooling system upon shutting off. Water will only remain in the outboard from the waterline down.

We do not recommend using expired oil in an internal combustion engine. Oil that is beyond it's expiration date will not lubricate and protect your engine as well as fresh oil, and it will break down faster during use.

They sell these suction cup looking things that attached to a hose, I think they are called earmuffs. They go over the water intake and you can run water through the engine and run it without damage.

As noted by another member here, freshwater flush muffs of several sizes are available through various marine retailers near you. The attach to the lower unit of the outboard and cover the water intakes, while a hose attaches to the muffs supplying cooling water. Install the muffs, turn the water on and start the engine. Removal is the reverse of those steps.

Why would you think the ignition system would get damaged. That’s like saying you’re going to damage your ignition system when starting the engine.

@@Maynardd the energy in the ignition coils needs to go some where..

@ this is what any mechanic will tell you to do.

Mercury outboard engines are self-draining. This means all water from within the engine drains out when the engine is not running and in the trimmed down position. Mercury does not recommend the use of antifreeze in the cooling system of their outboard engines as it could have damaging long-term affects to the cooling system coatings and seals.

Most outboard engines allow for the use of conventional marine engine oil for general use. We always recommend following the recommendations laid out in the operator's manual for the product you own, or contacting the manufacturer of your engine for guidance.

If you're attempting to pump the engine oil out using a thread-on pump, you'll need to make sure your pump and dipstick tube are properly threaded into one another as to not allow an air leak. If you do not have a threaded dipstick tube, you'll need to purchase an accessory hose kit that threads onto the pump and gets inserted down the dipstick tube to the bottom of the oil pan.

@@QuicksilverProducts Oh I'm well aware of how it works. It was tight on the threaded dipstick tube! It seems like the product is having issues internally (I've returned both). For $40-50 I'd expect this thingn to have a motor and pump itself. :) I think it's the diaphragm inside... it's not working properly. Maybe I got 2 of these that were broken, not sure, but from my experience, I would not recommend this. It did not work at all like it was described.

We're sorry to hear that. It seems odd that you would have two defective oil pumps, but we certainly can't say for sure since we've not inspected them. Other things that come mind are the angle of the boat my have shifted the oil in the sump to a point where it is not covering the bottom of the dipstick or the dipstick may be allowing air into it between the top and bottom somehow. Since you don't have either of the pumps any longer you won't be able to check this, but you can submerge the bottom of the pump where it would attach to the dipstick into a bowl of liquid and operate the pump to verify that it pulls the fluid out of the bowl and discharges it. In any event, we're sorry that you've encountered some frustration with our oil pumps and we're glad to hear that you were able to return them to the retailer from which they were purchased.

While our oil drain pump is primarily used for threaded dipstick tubes, there are aftermarket extraction tubes that you can purchase that thread onto the drain pump. One that comes to mind is from Mercury Marine. It features a threaded coupler to attach to the oil drain pump and has 19 inches of .375 O.D. tubing to insert into a non-threaded dipstick tube. The part number on that extraction tube specifically is 859717A2, but there are likely others on the market of various sizes for a wide array of applications.

Mercury Marine recommends the us of 25W-40 Synthetic Blend in the 4.3L MPI.

@@QuicksilverProducts thank you

Correct - drain and vent seals should be replaced during each service to avoid water intrusion of your gear housing assembly. Locking propeller nuts and the hardware associated can be reused throughout the season, but these components should be inspected each year or every 100 hours of use. During this inspection we also recommend a light coating of 2-4-C grease to the spines of the propeller shaft.

80W-90 Premium Gear Lube should only be used in engines with a horsepower rating below of 75hp. SAE 90 High Performance Gear Lube should be used in engines with a horsepower rating of 75hp and above, but can also be used in the 75hp and below applications as well.

Mercury Marine provides an operators manual with each engine they sell. Storage preparation can vary by engine model, so we recommend checking the manual provided with your engine to be sure of the steps. If you need assistance or do not have a manual, we recommend reaching out to Mercury Marine product support by calling 920-929-5040. Thank you!

On most models the oil dipstick is separate from the oil fill cap. Check to make sure you don't have a separate dipstick located on the engine. If you need further assistance, we recommend referencing the operator's manual for the product you own or contacting the manufacturer of your engine. Thank you!

@@QuicksilverProducts maybe, didn’t see a dip stick

If you have a 1.7L 75hp Mercury outboard, the recommended oil is 5.3 US quarts of 25W-40 Synthetic Blend. If you have a 2.1L 75hp Mercury outboard, the recommended oil is 5.5 US quarts of 10W-30 engine oil. We recommend checking the operator's manual or decals on your engine under the cowling to determine which model you have and which oil to use. 😊

He's holding it in his hand. Stop video and snap a screenshot.....

During the opening sequence of the video we've laid out the required materials, which include 2-4-C Marine Grease (part number 802859Q1). We apologize for any confusion.

It is the same as the first hose used on the drain below - 7/16 in. I.D. 😊

As long as your gear lube was filled from the gear housing and you have gear lube present in the monitor, you may top it off in the monitor. In the event gear lube is not present in the monitor, then we recommend adding from the gear housing fill hole.

@@QuicksilverProducts thank you !

Outboard engines should never be run dry as water pump impeller failure will occur, followed by engine damage due to overheating. Depending on the model of outboard you have, they either need to have a flushing attachment installed onto the lower unit or a hose hooked up to the outboard flush system. We recommend checking the operator's manual for the product you own to determine how to run the engine when the lower unit is not submerged in water.

The fuel filter used on the 150hp FourStroke is part number 879885Q. It does not contain any O-rings. If you've discovered a broken or loose O-ring, it is likely from inside the quick connection fitting on one of the fuel lines that connect to the filter. For those part numbers or component breakdowns, we'd recommend connecting with your Mercury Marine dealer or Mercury Marine product support. Contact details can be found via the link below. Thank you! 🔗: www.mercurymarine.com/us/en/about-us/contact-us

This is going to depend on which 9.9hp EFI engine you have. Previous 9.9hp EFI ProKicker models (serial numbers 0R833820 through 1R281444) have the same oil filter as the 15hp EFI shown here, which uses filter wrench part number 802653Q02. If your engine is the newest model of 9.9hp EFI ProKicker offered by Mercury Marine (serial number 1R281445 and above), it will not have an oil filter.

My f150 is the same way. I can’t get the thing off even with a pipe wrench or channel locks. Guess I’m just going to have to fork out $130 on a whole new assembly.