How do you change a front and rear main seal on a subaru outback legacy?

To change the front and rear main seals on a Subaru Outback Legacy, first ensure the engine is cool and the vehicle is securely lifted. For the front seal, remove the timing belt or chain and pull out the old seal using a seal puller, then install the new seal carefully, ensuring it's seated properly. For the rear main seal, you’ll need to remove the transmission; once accessible, extract the old seal and replace it with the new one, making sure it’s flush with the block. Reassemble all components and check for leaks after starting the engine.