15.5 Corte ........................................................................................................................................................... 21
16.6 Desrramado ................................................................................................................................................ 21
17.7 Tala ............................................................................................................................................................ 22
........................................................................................................................................................... 24
12.1 Limpieza de la sierra ............................................................................................................................... 24
............................................................................................................................................... 25
14.1 Introducción ............................................................................................................................................. 26
16.3 Seguridad eléctrica .................................................................................................................................. 26
.........................................................................................................19
............................................................................................................................... 30
............................................................................... 28
........................................... 29
.................................... 26
3