How to change oil in lower unit of outboard motor

The process of changing your oil is relatively simple. Do this every year as part of the maintenance to your motor.

Ensure the motor is level from side-to-side.

How to change oil in lower unit of outboard motor. Easy to follow video on how to replace the lower unit oil in your outboard motor. Do this every year as part of the maintenance to your motor. This is a cheap way to keep up with engine mainten.

This video will show you a step by step instructional video on changing you outboard motor lower unit oil. Changing the Lower Unit Oil. The lower drainfill plug screw is usually located on the starboard side of the lower unit beneath the bullet-shaped portion of the lower unit housing.

Locate your drainfill plug screw and adjust the trimtilt of your outboard motor or sterndrive so that this plug is in the lowest position possible in order to drain the used oil thoroughly. 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. Its no secret that changing outboard motor and stern drive lower unit gear oil extends engine life. Being this operation by making sure the outboard or stern drive lower unit is in a verticalupright position.

Drain gear oil a few hours after the outboard motor shut down in order to allow any emulsified water to separate from the oil. Inspect the drain screw or bolts washer or O-ring as the old oil drains out and replace it if its worn. Reinstall the oil drain screwbolt and its washer or O-ring and wipe away any oil from the lower cowling and the lower unit.

Tilt the outboard to the vertical position if it isnt already. Make sure the outboard is on the right position which is vertical and upright. Find the lower and upper fill drain plugs then place a container underneath it to place the oil.

Remove the lower drain plug after you make sure that you put the container on the right spot because the oil might begin to drip Remove the upper drain plug. Tilt your motor down with your power trimtilt control until the motor is level to allow the gear lubricant to settle at the lowest part of the lower unit. Ensure the motor is level from side-to-side.

Slip a basin under the bottom of the motor to catch the oil as it drains from the lower unit. Tilt the engine up to the trailering position. Turn the outboard so the drain hole is facing downward.

Remove the drain plug and drain the engine oil into an appropriate container. Once oil is completely drained lubricate the seal on the drain plug with oil and reinstall. Click to see full answer.

Moreover can you fill lower unit oil from top. Lower Unit Oil Change Step One First be sure your outboard is in a vertical and upright position. Locate and identify the upper and lower Fill Drain Plugs.

Place an oil drain pan beneath the outboard. Step Two Remove the BOTTOM drain plug first not the top. After placing the drain pan below the lower unit remove the lower screw.

Oil will begin slowly draining out. Next remove the upper screw. This will allow air to flow into the lower unit displacing the oil and the remainder will drain out quickly.

Tilt the drive unit up a bit if necessary to be sure all the oil drains out. The drain the oil of the Evinrude lower unit there are two flathead bolts. An oil drain pan was grabbed from the shed and placed under the lower unit.

The bolts were in so tight I had to put a pipe wrench on the screw driver to break the bolts loose. Top bolt was removed first then the bottom bolt. Wipe any oil from the outboards lower unit with clean shop rags.

Dispose of the used oil according to local law or regulations. Wash the whole outboard with a mild grease-dissolving detergent and warm water to complete the gear oil change. Warnings Tips References Tips Warnings Writer Bio.

Tighten all connecting bolts until the unit sits firmly on its place. Next put the trim tab back in its place and dont forget to the bolt in front of it. Then open the gear case and fill it with lube you have to remove the lower and upper screws.

Use the pump to channel the lube from the bottom do it until the lube comes out of the upper hole. Attach an oil pump into a container of marine gearcase oil and slowly pump the new oil into the lower unit. Continue to add oil until it begins to overflow from the vent hole at the top of the lower unit.

Reinstall the vent screw and washer then remove the oil pump adapter and reinstall the drainfill screw and washer. Watch the video above and follow the steps below to change the gearcase oil in a Mercury 40HP 2-stroke motor. 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.

2 Oil drain pan. 3 Gear oil pump with lower unit adapter. 5 New Gear Case screw washers very important To start simple loosen the bottom screw on the lower unit and make sure the oil pan is underneath before loosening the top screw.

Once you loosen and remove the top screw the oil will drain very quickly into the pan. If you have removed the lower unit and bumped it you might have to re-adjust for Neutral if the shift linkage isnt lined up. In most cases you simply need to rotate the spline shaft to align the shifting again.

Grab it with a set of pliers and rotate it until you feel it snap back into Neutral. How to Change Your Lower Unit Oil. Remove the damaged seal and pull out the old O-ring.

Place the new seal into the bearing carrier and tap it into place with a mallet. Finally spread grease on the seal. Dont forget to replace the motor oil with Evinrude XD 50 oil.

0 August 19 2011 by BoatsOfFury in Boating Evinrude oil Evinrude XD 50 Motor Oil Evinrude motor oil Evinrude oil.