That beep is normal. It is coming from the horn that alerts you to an overheating or oil problem. If you don't hear it you need to find out why.
Thanks! I have a 2 cycle motor so no low oil as its premixed, but good to know hat the heck that start up beep is!That noise on startup is the noise to tell you the alarm system is working. Then during operation, you will get continuous alarm if the engine overheats and a short blast every three to five seconds if the oil tank gets low and a warble if the oil stops pumping for some reason.