Detailed Piston and Cylinder Inspection

What happens here

With the flywheel removed, Cliff now has direct access to the cylinder and piston. He uses a small hammer and a punch to gently tap out the wrist pin, which links the piston to the connecting rod. The pin is quite difficult to remove, indicating it is likely seized due to the engine overheating. Once the wrist pin is finally dislodged, the piston can be completely separated from the cylinder. Upon close inspection, the piston reveals heavy scoring and visible damage on its sides. The cylinder wall also shows matching scoring marks. Cliff explains that this damage is a direct result of using regular gasoline in a 2-stroke engine. He clarifies that 2-stroke engines rely on the oil mixed in the fuel for lubrication, unlike 4-stroke engines which have a separate oil reservoir. The absence of this lubricating oil causes severe friction, leading to rapid overheating and the piston seizing against the cylinder wall. He suggests that a proper repair would require replacing the piston, cylinder, and associated gaskets.

Goal: Visually confirm the extent of the damage to the piston and cylinder due to incorrect fuel.