Introduction
Changing the blade of a Sterwins thermal lawn mower
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            Position and affix the blade lock on the mower deck. Ensure the blade is positioned inside the lock. 
 
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            Unscrew the blade's fixing bolt with the 17mm wrench, turning counter clock-wise. 
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            Remove the bolt and the blade. 
 
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            Put in place the new blade and screw the fixing bolt back. Use your hand, turning in clockwise, and finish tightening with the 17mm wrench. 
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            Remove the blade lock, reposition the lawn mower upright, and replug the spark plug wire on the spark plug. 
 
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