Your engine is a 11 cu.in, vertical shaft with a Pulsa-Jet carby, plain bearings with a vertical pull starter, manufactured on the 6th September 1984....I can't tell you the plant, but it would have closed prior to 2011.
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