Washer agitates and drains but doesn't spin

Washer agitates and drains but doesn’t spin, sometimes it does though. If I am paying attention right after rinse cycle I am able to put a screwdriver in the switch hole and manually start the spin of the drum. As I am not a repairman I did replace the coupler which didn’t need replacing… After looking at some other posts I am thinking that it is the clutch. Please any opinions are welcome.

It does sound like the clutch. Check it out with this video here

http://www.youtube.com/watch?v=kClHNsA6XNI

and check the brakes using the info in the Sticky at the top of this page by Richappy.