A course designe to teach candidates how to fell trees that are greater than 15" diameter at felling height with the same size of saw that they undertook their basic chainsaw training with ie 15" bar. pre requiste Cs31 small tree felling.

The techniques during this unot are more challenging than the initial felling course as the bar can be completely concealed within the cuts inside the tree these techniques demand precise cuts in oder to complete the sequence, felling aides are then used to fell the tree due to the increased size and weight of the specimens required in this unit.