While I'm waiting on my 26cc 4 stroke to arrive I've started on a 25cc 2 stroke.
I'll try to upload pics as the project progresses but I've had pretty dismal luck getting any pic into these forums.
This power head was apparently manufactured in Taiwan. The pics below represent the unit before disassembly.
Instead of a throttle cable it operates on a lever that apparently gives you a speed range between a tortoise and a hare.