Yes, keep stripping mate! As Joe has said, take off the black cowling that you are now looking at, the decomp valve is the round thing on the top of the cylinder head above the spark plug. Don't forget to post a pic of what's under the cowling.
Please do not PM me asking for support. Please post your questions in the appropriate forums, as the replies it may receive may help all members, not just the individual member. Kindest Regards, Darryl