need some help with a 40 series comet clutch repair

#1
The driver on my Engine is not disengaging correctly, so i took it off to take a look at it. it has something loose inside and need to get it apart. Sooo anyone know how these 40 series come apart?. I'm guessing the big nut on the front takes it apart. but is it right or left hand thread?..:shrug:
 
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