Bruce. Plunger depth is 2.5mm. I have been looking into the HC carb again and a few guys say it is a HL carb without the fuel pump??? Dont know if this is so but just a thought. An exploded view of a HS looks the same though which is what you said. http://www.acresinternet.com/cscc.n...739e3628dc088256e0f007adaac?OpenDocument Thanks again. Matt.
