Recently, a member of my household was mowing the lawn. It had rained for the past week and poured earlier that morning. No adjustment was made to the mowing height or width of cut and after about twelve passes, she said the mower began to sizzle and smoke and then the spark plug shot out of the mower. Upon returning home, I noticed the under side of the mower was full of grass and the filter was covered as well. I re-inserted the spark plug, primed the engine and pulled the start rope. BANG! went the mower and the spark plug shot out across the yard, breaking into three pieces. Should I try getting a new spark plug and try again? Or do I need some major repair? Pleas help.