I have a ZDZ 40 RE.
I am trying to install the ignition sensor.
I have read the instruction and they look pretty easy.
The only question I have is how do I locate exactly TDC on the piston.
I have turn the shaft around, and I can see the piston through the exhaust opening, but it's difficult to locate TDC perfectly.
Is there an easy way to do it, or you have to just "guess" the best you can?

Thanks for all the help