80cc bike engine not idling and overheating

[MotorBicycleRacing]

i here is some pics of my piston,I do not see the "pins" you are talking about but I do see a "5" and an arrow pointing towards the front of the bike, take a look at the pics, thanks,bikedemon

The pins are on the back of the piston in the ring grooves.
They face the intake side and are on both sides of the intake
port so the ring ends do not catch on the port.

The rings are stopped from rotating by these pins which keep
them from moving.

Take note that the ring ends are angled to fit around the pin
so the ring has to be the right side up.

If you try to insert the piston into the cylinder with the ring
ends not being next to the pins you will break them.

Your ring ends in your pic are on the front of the piston so
carefully rotate the ends about 180*

 

[SouthernOntarioBikeDemon]

I still cant get it......arghhhh

 

[MotorBicycleRacing]

I still cant get it......arghhhh

Here is a pic with a red arrow on the left pointing to one of the ring pins.
The pin at the other arrow is missing.
The pins face the intake port.

Get it?

 

[SouthernOntarioBikeDemon]

thanks for the pic that helped alot, so i have the engine mounted now but i tried riding it and two things went wrong, I am having trouble with the clucth handle and cable it is not pulling the clutch arm enough to release the chain, second oil or gas or idk what is coming out of the exhuast port where it bolts on and is leaking all over the bike and the exhuast ????? im about to say **** it and scrap this thing.