The only thing I noticed after taking it apart was the oil level. I think the original owner let the oil level get too low. There was at most one litre of oil in the engine. I have replaced most internal parts that are susceptible to wear, piston, cylinder, main bearings, con rod bearings, and have a new gasket set for assembly. Cam shaft, gear, bushings look good. The unit was not carbed up much at all. I have some great pics if anyone knows how to attach them under the txt.!