OS MAX 46 FX RC AIRPLANE ENGINE WITH MUFFLER. EXCELLENT CONDITION. Mounted but not ran. No Book. Removed back cover looks like new. I can't be 100% sure so I am listing as used. I am 98% sure, it does have light mounting marks. So many sellers say it's new and then you find out it's not. Burns me up, especially when they knew dam well it wasn't 😡 well anyway, Bearings are smooth and has Excellent Compression, Returns accepted if its in same condition it was sent. Packaging will be well done. Thank you for looking, be sure to check out my other Engine's. GOD BLESS