... the next boot. 6 feeling machine vibration abnormal, please immediately stop check, if broken, loose, eccentric. 7 prohibited in riprap caboodle ... . 9 every time clear spark plug, carbon deposit cleaning muffler, air filter, gear box filling grease. 10 problems can not be solved ... near the drill bit; cleaning or check the machine must stop. B: before starting the machine safety drilling must clean up ...