Hi, yep sounds like a good idea to pull the carb off & give it a good clean up, the old fuel that sat in the carb may have gone off/stale & started to block up the idle circut in the carb, get some carb cleaner in a aerosol can & spray the small pasages/jets (don't forget eye protection) some compressed air may be needed too, once back togeather - make sure the fuel line from the tank is clear & fresh fuel is in the tank. hope this help