Hi mate, is this the same sukida with no compression?? on your previous post? i assume you've ruled out leaky valves and head gasket when you compression tested? you dont want all that work if its not rings. To answer your Q you need to slacken off the camchain to remove the camshaft so that you can lift the head, probably 4 nuts to undo off head/barrel studs.Make sure the camchain is properly on the crank sprocket on re-assembly. good luck.
Pitkin
February 2011