Performing an oil change on a Mercury 15hp outboard motor gearbox with a tomato sauce bottle.
How To Change Gearbox Oil with Tomato Sauce Bottle Mercury 15hp Outboard Motor Service
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What a mess. If the manufacturer specifies a capacity of 200 mil, just put
200 mil of fresh oil back in through the top hole.
If you plug the lower drain hole and try to fill from the top you end up
with air-pockets and the internal case pressure prevents you filling at a
steady flow rate, you will struggle to get the adequate amount of oil in.
Manufacturers instructions specify filling from the bottom so this is an
easy solution.
Thanks for a good DIY vid
Good video. Put just a little advise, if you put the top screw in after you
add the oil, there will be a vacuum created and no oil will come out of the
bottom. It’s a lot easier than putting the screw in the bottom while oil
comes out. Good video again!
Why wouldn’t you just put the bottom screw back in and pour the oil in the
top hole?