242. Conditions for using a chain saw: A portable power saw or chain saw shall only be used under the following conditions:(1) it may only be started at a distance of over 3 m from the place where the gasoline tank was filled;
(2) it may only be started if the chain stopper is applied;
(3) it may only be started if it is firmly set on the ground or if the worker holds it by gripping the main handle near the chain stopper while securing the rear handle between his knees except if it weighs less than 4.3 kg;
(4) it shall be used by holding it with both hands and with both feet firmly standing on a stable surface;
(5) it shall have the chain stopper applied when not held firmly by the worker and while being carried from one work area to another;
(6) it shall be equipped with a chain that is sharpened, adjusted and maintained according to the manufacturer’s recommendations;
(7) it shall never be used any higher than shoulder level;
(8) it shall only be adjusted or serviced when the motor is turned off;
(9) it shall never be fueled when there is a fire or explosion hazard.