You also need to remove timing chain from cam sprocket and there should be a long bolt going down on the side of the head. Tear it down and see what's up...depending on where you ride, the auto may not be a bad idea, I'm actually building one now...when your on some tight trails, or putting slowly with your buds, or booze cruisin' it's nice not to have to worry about the clutch...leaves a hand free for your "soda"...
'74 ATC70 (stock for my nieces)
'84 ATC70 big carb, race cam, and piped (big boys little toy)
'84 ATC125M
'85 ATC125M
'85 ATC185S (200X carb and pipe)
'83 ATC200X (my first trike ever, avatar pic)
'85 ATC200x
'85.5 Tri-Z 250
'85 ATC250R
'79 CJ7 w/351 Cleveland
'77 XL75, '78 XL125
'88 Katana 1100
'00 King quad
'05 LTZ400