Shear pins are bolts that serve as the mechanical equivanent to a fuse.
They hold the spiral first stage gubbins to the shaft that drives it. When you mistakenly ingest a rock or a hammer or something else buried in the snow, they shear off and you just install another one.
They protect you from more expensive repairs.
They hold the spiral first stage gubbins to the shaft that drives it. When you mistakenly ingest a rock or a hammer or something else buried in the snow, they shear off and you just install another one.
They protect you from more expensive repairs.