these are extremley reliable, aren't very expensive and parts are cheap.
When it comes to maintenance on your clone engines they really don't differ much from genuine Honda or other brand engines. Below is a list of things you should do when it comes to maintaining your engine.
Everyone has a different opinion on what to do at the end of the day we don't recommend draining the fuel out of the carb when being stored for short periods. over the years i have seen carbs that have been drained regularly and after a while there can be corrosion and foreign material found in the bowl of the carb when you refill next time the crap in the bowl gets mixed with the fresh fuel & ends up going through the carb & can block jets & internal passages.