Well, be nice to know what type engine you have on it and what type fuel you use (gas or diesel) for use thats too lazy to look up your model online.

I suspect it has briggs gas engine either single or twin? If it is briggs engine and you put gas in it then it has spark plug or spark plugs (two If twin and one if single) You will probably have to take the top side panels off to see it on top of the engine (if flat head design) or (top side of the engine if OHV design).

If if runs good I would froget the brain storm to check it, you may create other problems? I would just check the air filter and change the oil prividing you have done that before and are confident doing that. Run it for 10 mins. store it and run in again every 60 days if you don't use it that often.

Here is the manual

Here is a link that might be useful: Gen