You should really get the Helms manual so that you can properly maintain your motor. They're available at http://www.helmsinc.com/ and are well worth the $$$
it is on the rear of the engine below the engine. There is a rubber hose coming out of the motor and the drain plug is inside the rubber hose.
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Just forward and outboard from the oil filter, screws in horizontally.
There is a great new product on the market. Go to SeeWellInnovations.com and check out the Tilt N Drain Oil Drain Kit. Virtually no mess. There is a video, not the best quality, but shows how. Contact the company to purchase. It will make changing your life easier.
Yea yes it can
whereiscrank case oil drain plug on 1998 mercury 9.9 4 stroke
Step 1 Drain it Step 2 fill with 2 stroke oil
where is the drain oil plug on a 2010 9.9 mercury outboard motor
Check out the new Tilt N Drain Oil Drain Kit. No mess and no rags or paper towels. See the video at www.seewellinnovations I've used it over 200 times and it still works great!
There are two drain plugs on the RT3's Both are on the bottom of the crank case. There is one on the generator side and one on the clutch side.
Changing the gear oil in a 4 stroke outboard, is the same proceedure as with the 2 stroke. Remove the drain plug, at bottom of gearcase, remove vent plug at top of gearcase and let drain. Fill from bottom, (drain plug hole), until lube runs out of top, (vent plug hole). While blocking off drain plug hole, to keep oil from draining, replace vent plug. Make sure that plug gaskets are in place and in serviceable condition. Quickly, replace the drain plug.
By simply storing your outboard in a vertical position, powerhead up, the cooling water will drain out of the engine via the gearcase.