Dave, I have a YS 140 that I am not sure if it is an L or an fz. The original owner said that it is an FZ but the box that it came in says 140 four cycle LIMITED ys0095. It does have the 2 nipples on the back but so does some of the FZ engines. It doesn't have the mount that some of the L engines came with. Could possibly tell me how to tell the difference even if I have to open the engine. I took the head off and it doesn't have the piston with the 4 pins. Any info would be well appreciated.

I just want to say that over the last season I have gone YS crazy, I had 1 SC that had been sitting unrun for years and once I ran it I have been hooked. I now have 2, 120SCs,
2x fz63 s, 1x 160, 1x ys140, 1x 120nc and 3x heli motors I did have the heli motors already. All these motors run great and never cut off unless out of fuel.

You guys do a great job.
Thanks in advance
Jeff