I have a Ryobi 725R weed trimmer. It starts and will run on 1/2 choke only. After about 5 minutes it shuts down, like it's out of gas but all fuel lines are full. Help??

I would inspect carb and see what the difference is between 1/2 choke and no choke. Set the choke, move the throttle and look into carb- doesnt need to be running. Sounds like something is still restricting airflow at no choke.

chokes are an obstruction placed over the inlet to increase the vacuum in the carby and cannot be pressed
Primer bulbs are used to suck fuel through the diaphragms to expell all of the air in the system to allow starting
normally press the primer bulb until it is full of fuel
apply the choke and pull until it fires
remove the choke and at full throttle pull until it starts

Is the choke leaver stuck in the on position.? Is fuel getting into the cylinder.? Also check fuel lines are not damaged

where is liaope platyphylla found

Sounds like you need a new spark plug and probably a new gas filter. To start the weed eater it is recommended to pump the primer bulb seven times and the choke full down. You can get the fuel filter out of the tank with a hooked wire. Good luck.

you need to replace fuel filter inside the fuel tank . fish it out with and empty tank using a coat hanger and a small hood bent on the end.filters are around $9.00

do you have the right kmix fuel to addat start on choke let run tell it dies then pump the ball on half choke and chage the plug

You need to check out this video...

The gas nipple that come out I have...whats goes in the other hole?

check the fuek lines for hole and leaks, check the fuel filter and clean if necessary. remove the carbuerator and inspect the gasket; it should be soft and flexible, if it seems hard or brittle replace it. clean the carb with carb cleaner sray (available at any local auto parts store) and compressed air. make sure you get inside the small fuel rail holes. also check the primer bulb for pin holes and proper seating/seal. i