KYMCO G-Dink 125i Manual page 161

2. Engine > Cylinders and Pistons G-Dink 125i
Make sure the cylinder head mating surface is clean. Install the two
dowel pins as shown.
Install the new base gasket onto the crankcase.
Coat the inside of the cylinder, piston rings, and piston in fresh engine
oil. Lower the cylinder over the studs and guide the piston into the
cylinder while you are compressing the rings with your fingers. Be
careful to not damage the rings during this step. Bring the cam chain
and guide through the opening.
77