you could almost say finger tight then another 3/4 turn on this engine. the upper heater hose may have to come off, you'll spill some coolant but not much.
1/4" ratchet is your friend, deep socket / short extension.
The PCV valve may snap, and the rubber grommet in the cover may be tired. be prepared to R&R if needed.
Please DIY. Mine was sludged big time inside. I took an extra thirty to scrape and vacuum out the goo. Time well spent.
This is not a hard job, and is fun. Clean it while it's off. If you are feeling spunky, hit it with some high-heat spray paint.
Mikey