What is Stroke?
The process of moving from one end of the cylinder to the other when the piston reciprocates within the cylinder is called a stroke.
4 stroke engine is divided into an intake stroke, a compression stroke, a power stroke and an exhaust stroke.
There are 4 types engine model, such as, Gasoline, Methanol, Water-cooled Gasoline, Water-cooled Methanol.
More detail picture please go to the link www.stirlingkit.com
Wish there was an easier way to get parts for these toyan engines. need replacement parts but cant find any