I get caught in the rain all the time! Never had any problems at all. A friend that is in the business has a 20' open trailer that he can't fit in his garage- it stays outside ALL THE TIME! 2 Lazers, 1 WB, 2 trimmers, edger, hedge trimmers, chainsaws, and a bunch of other stuff in the rain, snow, hail- everything- never has any problems. All Stihl and Echo stuff.
You don't stop playing because you get old, you get old because you stop playing.