Eska Golden Jet 400

[Chris chris]

Over the weekend I acquired an Eska Golden Jet 400. I had never heard of an Eska, even though I grew up and live 2 hours from where they were manufactured.
The gentleman I got this engine from had it running at one time, but the prop wouldn't turn. I figured it needed a new shear pin. I removed the nut from the prop but it doesn't just pop off like when I replaced the pin in my Johnson Seahorse.
Is there a shear pin inside the prop or am I looking in the wrong place?

 

[brim_buster]

might have a cap on the nose thats threaded. Kinda like a nut to hold the prop on. The manual says 2 different styles. One with a shear pin and one with a screw on nut