Love this engine
I did have some trouble getting this engine to run at first. Not sure if this was my lack of experience with this type of engine or valve timing issue when delivered. The instructions show and explain how to check and set timing which I did but it took a few tries as I was miss interpreting and not reading closely. When I followed instruction precisely and then did the last step of flicking the engine over to check the sound (as per the instructions) I got the popping sound and when I tried it again and by moving the burner back and forward while flicking engine over in the correct direction the engine ran beautifully. Lovely example of this type of engine with a great sound.