Thanks, not ever seen or used one of these things I had no idea where that metal guard went and there is nothing in the instructions other than an extremely, and I mean EXTREMELY small picture with it already on. (I had to put on my glasses and find a magnifying glass as well and I still couldn't tell where that went from the tiny diagram.)
very useful video as instructions seem pretty useless. However, not sure whether the string itself feeds into anything or whether it just sits under the guard? Any help would be appreciated please.