"I recently purchased for almost nothing an eska 3.5 1703-C I believe its a 1971. I took the carburator apart, cleaned thouroughly, replaced some parts and now it starts and runs like a top. One problem, the propeller is always turning. There appears to be no neutral position. Is there a clutch in this model. I have a parts and operation manual but its for a variety of models and I am not that mechanically inclined. Please humor this idiot as I,m turning this little boat and motor over to my 12 & 14 year olds and want it working right."