Buy a new engine.
you will need a gasket kit depending on how bad it is seized rings, piston ,cylinder. In most cases if a weed eater is seized they are cheaper to buy a new one then rebuild. Hope this helps
The piston rings create a seal between the piston and the cylinder wall.
Your piston rings need replaced. One of the two piston rings on a piston is for oil control. This is either worn or broken and needs replaced.
Gently, they break easily. They also make tools to R&R piston rings to avoid breaking the rings.
Piston seized to cylinder wall Broken Crankshaft
Oil rings Combustion rings Piston rod Piston rop cap
The piston rings are fitted round the piston to make a better gas-tight fit in the cylinder.
Seized Piston and or Crank, take the exhaust off and feel into the bore it there are metal shavings your piston is seized. The top end will need to be rebuilt, pull the top end remove the piston and connecting rod and push the kickstart down. If it remains locked the crank is seized as well, you can split the case and rebuild it but, it would be cheaper to buy a complete motor.
Running an engine with broken piston rings will cause damaging scoring in the piston chamber, and is not to be recommended.
It is a spring metal sleeve that goes over a piston to compress the rings so that the piston can be install in the motor. It tightens down on the piston, forcing the rings into the grooves in the piston then you tap it into the cylinder.
Worn piston rings, bad valve seals,
You don't. The only solution to damaged piston rings is to take the engine block out of the car and replace the rings.