The engine is manufactured in China, which I am assuming you mean the Powermore 357cc engine. The plant in China is a partnership of MTD in Canada...
Google says 357cc is equal to 13 H.P.
just bought a craftsman snow blower yesterday. 3 manufacturers, MTD, Briggs and Stratton and Husqvarna. was told MTD 357cc was chinese can`t even find a torque # for it, Briggs and Stratton 305cc and 342cc made in USA, they had no Husqvarna so i don`t know about motors. was told Briggs and Stratton were not only making the motors but the whole machine, on the Pro series i bought which has the Briggs motor, if you look on the chassis it says built in the USA. This information i was told at a Sears store. hope its correct.
357cc
1hp=42cc thus 8.5hp=357cc..
seeing life
Most lawn and garden equipment motors run about 1 HP for every 25CC ... so a 357 would be somewhere around 12-14 HP.
1HP = 16cc [approx] therefore, 357cc/16 = 22.3125
i has e gas engines and opates on one piston goes up down. loud is it. i Espainish and Englich be no good like one up down engine too loud and no go long, keep stopping wo not stay run. I go back to puerto rico soon but no engine.
Here is what I would say. I believe the engine is made by LTC. LTC says the suggested plug is the Torch F6RTC. If you buy the MTD plug, the plug in the package is a Torch F6RTC. LTC goes further on their web site to state the equivalents in their mind are: 1. Champion Plug: RN9YC 2. NGK Plug: BPR6ES 3. Bosch Plug: WR6DC. I am not happy with Torch. At the first winterising of my 2010 Troybilt 3090; 357cc engine I pulled the plug and it was rusty...yes rusty. I would say the MTD plug does have a black coating which may help. Anyway, I would say this is a good cross reference. However, I have not yet confirmed that the Chinese Troy Bilt motor is LTC but I would give it 95% certainty given the engines they advertise on their site. In any event they do show this plug crossing to the above listed plugs.