Shouldn't be noise. A loose primary chain will cause a jerking motion at lower rpms at light throttle.(in town cruising)
Download a service manual at the top of the forum page and it will tell you everything to do. Very easy and straightforward.
Two bolts remove the inspection cover, one large nut on the bottom to adjust the shoe. Something like 1/2" to 5/8" play cold.
It's just a large chain that connects the crankshaft to the clutch.
Any questions, just ask, LOTS of members here happy to help a fellow 'Bueller.