Parts Diagram for McCulloch Gas String Trimmer?

Gentlemen,

Where can I view a parts diagram (on line) for a McCulloch gas string trimmer model 3227. This unit includes a Zama 14 Carburetor M29 3ZP CIU. Engine runs but is hard to start and stalls shortly after starting. Plug & fuel filter are OK and fuel is fresh and mix is 40:1. No vacuum leaks. Spark arrestor is clean. I suspect that the carburetor requires rebuild. Mixture controls have not been adjusted. Unit has run OK previously. A diagram and your comments are appreciated. I may be reached by email at jwilloug3@verizon.net.

Best Regards,

JWW