Solo Comb Replacement Blades replace the old blades in your Solo Comb. To replace the blades, remove the two screws at the comb end. Lift off the blade cover and remove the blade fixing plate. Lift the old blades off the mounting pins and replace with new blades. Put the blade fixing plate back on, replace the blade cover, and tighten the screws. You're ready to groom your horse again!