Figure I help everyone out there who needs help on changing their gear oil themselves. I took pictures during my process for everyone.
First you want to take off the cover that says Volvo Penta SX. It is held on by 3 bolts.
Next you will want to remove the drain bolt at the bottom of the stern. It is a flat head bolt. Make sure you have something underneath to catch the oil.
Next remove the fill flat head screw from inside the cover that you took off. This will allow the oil to drain easier with air flow.
Also unscrew the dip stick at the top.
Make sure your trim is all the way down to allow the oil to drain. Set something underneath to catch the oil. Just leave it there and let is drain until it stops or slowly drips. I let is sit there for a good 15-20 mins.
Once that is done then you want to pump new oil to the top. I have a oil pump that you screw in to the bleeder bolt at the bottom to pump the oil up. Any marine store will have this and I even saw walmart had it.
Start slowly pumping oil into the stern unit slowly. Do not pump too quick or you will get unwanted air in your drive. You will continue to keep pumping and adding oil until it flows out of the middle bolt you took out from behind the cover. When you see oil coming out this means it should be full.
Screw that bolt in and dip stick as well.
Then unscrew the pump at the bottom and install the drain bolt back in. Mine took about 2.5 quarts. Clean and wipe everything down and your done. After taking it out the first time I would recheck the dipstick to make sure everything is still ok. Congrats! you saved some money!
First you want to take off the cover that says Volvo Penta SX. It is held on by 3 bolts.

Next you will want to remove the drain bolt at the bottom of the stern. It is a flat head bolt. Make sure you have something underneath to catch the oil.

Next remove the fill flat head screw from inside the cover that you took off. This will allow the oil to drain easier with air flow.

Also unscrew the dip stick at the top.

Make sure your trim is all the way down to allow the oil to drain. Set something underneath to catch the oil. Just leave it there and let is drain until it stops or slowly drips. I let is sit there for a good 15-20 mins.
Once that is done then you want to pump new oil to the top. I have a oil pump that you screw in to the bleeder bolt at the bottom to pump the oil up. Any marine store will have this and I even saw walmart had it.

Start slowly pumping oil into the stern unit slowly. Do not pump too quick or you will get unwanted air in your drive. You will continue to keep pumping and adding oil until it flows out of the middle bolt you took out from behind the cover. When you see oil coming out this means it should be full.

Screw that bolt in and dip stick as well.
Then unscrew the pump at the bottom and install the drain bolt back in. Mine took about 2.5 quarts. Clean and wipe everything down and your done. After taking it out the first time I would recheck the dipstick to make sure everything is still ok. Congrats! you saved some money!