These engines are usually to be found on a variety of utility applications such as Tillers, Rotovators,
Large Cylinder Mowers, Cement Mixers, Scarifiers, Generators, Pumps,Go Carts etc.
They are overhead valve with the spark plug set deep to one side or the top of a rocker cover.
The fuel tank will be mounted directly on top.
They fall under a number of different sticker names including Intek (8HP,10HP and 11HP),
Power Built, 1150, 1350, 1450, 1550 and 2100 Series are the most commonly encountered.
The cylinder and piston are at 45 degrees to the vertical giving the engine a compact look
The pull start will be on the side with the crankshaft emerging horizontally on the opposite side.
The Model, Type and Code numbers are stamped into the side or top edge of the rocker cover or the pressed
steel cover beside it. Some may also have the numbers on a sticker on the fuel tank
The Model number will begin with 15,19,20,21 or 25