Well the chain may be noisy but it lasts. what do you expect from a little/big 4cyl (most ver), your gonna get noise.
Tough little engine. My wife
put six gallons of the GREEN pump handle into it.
. After not getting through the anti siphon unit, (not a mech)flushed it with mass qtys of hi octaine gas.
Runs just as good as before.
Never had any other probs with it.