Many thank's for the great post's, the learning curve is heading North. MarkN Picture confirms the other expert comments, white wire inside the plastic sheath to throttle control. I'm warming to this machine and I think it may have had a kind life. The base is in great order and is one of only 2 or 3 mowers of any type and age that i have come across that has no mulched on grass cuttings under the base. I guess the real interest for me now is the purpose of the letter box slot in the base. Was there any issues with fuel vaporization in the carby known in the previous models ? as this slot faces directly at the carby or could it be the reason they mostly got changed to the G3 carbys as they didn't surcumbe to dust, sand, etc wearing out the spindle.
