How to replace the blade on
The more the cutter is used the quicker the blade will blunt. The majority of hose cutters have replaceable blades, if this is the case it will be stated in the specifications.
If the cuts become rough, or the cutter is crushing or deforming tubes before cutting through them, then the blade will probably need to be replaced.
Each cutter is likely to have a different blade, so make sure you check that it is the correct blade before purchasing. The specifications will usually give you the part number of spare blades, so they should be quite easy to find. They are likely to be available online and from hardware retailers.
Replacing the blade
Step 1 - Remove blunted blade
The blade will be attached to the cutter one or two screws or pins.
Unscrew the fastenings with a suitable screwdriver or hex key and remove the old blade.
Step 2 - Insert new blade
Insert the new blade, line up the holes in the blade with corresponding holes in the head of the cutter, and insert screws or pins.
Step 3 - Secure in place
Tightened the fastenings to fix the blade in place.