Looper Shutdown with a rattle noise

[nymack66]

Thanks guys for all your help, I decided to replace the power head with a re-build.
I am now using this down time to replace all the little things on the engine that is old or that I think will enhance the longevity of the new motor like all the check valves, flame arrestor hoses, reeds etc
Hopefully all the parts are here this weekend and I will assemble it.
In the mean time I am helping a friend restore a condo, finished the tiling and moving on to hardwood floors.