In the case of the Harbor Freight Predator 212cc Engine, it is important to note that the manual indicates you should use 87 octane or higher fuel, and you shouldn't use E85 ethanol, or any fuel ...

You can actually buy brand new compact engines from Harbor Freight, pre-assembled and ready for action. One good example of this is the 6.5 HP 212cc Predator Engine, which features a simple ball ...