YS Performance is the importer of engines into the USA, more correctly into North America. YS Performance is not the Warranty service center for YS Japan.

I have spoken to many folks from Eruope that and other parts of the world that have used YS Performance for Service work but in these cases the engine work is not warranty unless it was purchased through a North American hobby shop like Central Hobbies or Horizon Hobby.

Basically it boils down to the warranty work performed in on their North American engines and not all YS engines. This is unfortunate for folks living in other parts of the world but is a simple fact of life. If I buy a $100 tail wheel from Japan and then expect it to be replaced under warranty when it breaks...I need to go to Japan and get it worked out. Reality is its tough.

Conversly If you purchase an OS engine and expect Hobbico to service it when you didn't buy it from Tower Hobbies and you live outside North America you will get the same answer. I would say that YS and OS engines are both very high quality engines.

The YS doesn't have to run on 30% nitro Cool Power also makes a 20% Performance Heli fuel that is less nitro than the 30% heli and it runs extremely well on this also. Most choose 30% for the power and performance...but its not required.

Sorry for your frustration with it. If you want it fixed and running properly before its returned to you YS Performance will do that and they are extremly good at it.....They are not Yamada of Japan...they are under an agreement to service the engines they import.

Troy Newman
Team YS Performance