"I have a Federals sold 7hp Eska with neutral.After 6 faithful seasons of fresh water service running 50-1 ratio I ran into my first problem. It still runs good but will not go into neutral. I have read many of your posts and found this site most useful. As I tore it apart to check the clutch I was surprised by the amount of rust on the steel parts. It appears the end of the spring has broken off. More oil may have been a better choice for its corrosion resistant coating in the exhaust. I think the rust in the clutch contributed to its failure. Also the parts don't seem to be real high grade marine material such as stainless. So even if the powerhead seems ok with 50-1 alittle more oil may be beneficial. Thanks for all the great info, Larry"