Pulling Poppet Valve

[weedeater]

Has anyone done this? How much trouble is it? I bought a 200hp Vmax that seems to be pumping good and water stays cool coming out of peehole but I have read and was told its common on this motor to get trash that will block the valve and not give a pressure reading on gauge. I plan to pull and clean poppet, thermostats and flush engin with them out but curious if there is anything else to look at or watch for in duing this.