Mantis tiller, was running last year went to use it this year it wont start . Replaced spark plug, checked grounding switch, even put a new carburetor on it. Can get it to fire on starting fluid but not run. Tired of messing with it so I bought a used tiller. Would like to get my money out of the parts I put on it. Maybe Im missing an easy fix, someone a little handier than me could get it going Im sure.