Turn off all power to the circular saw and remove the power cord from the wall outlet. Twist tie or tie off the cord to keep it out of the way while changing the blade,Slide up the protective blade guard to expose the blade. Lay the saw down on a sturdy bench top.,Clamp the circular saw to the bench top using two bench clamps or any clamp that will hold the unit securely to the bench. , Locate the hole in the saw blade itself. This hole will be drilled all the way through the blade and can accommodate a drill bit or another thin piece of metal or wood. Place a drill bit through the hole in the saw blade to secure the blade from moving. Many newer circular saw models come equipped with a blade lock feature that can be employed to stop blade movement .Attach a wrench or socket to the circular saw blade retaining bolt in the center of the blade. This bolt attaches the blade to the saw itself. Remove bolt and set aside. Remove the saw blade and place the new blade in its place. Replace the blade bolt and tigh
Electric razor blades should be changed once every 12 months, but that could depend on the model of the razor. Changing razor blades properly will ensure an even shave.
Band saw blades should be changed regularly, typically every 6 months to 1 year, to ensure optimal performance and safety. Regularly changing blades helps maintain cutting efficiency and reduces the risk of accidents or injuries.
There would not be much reason to rent the average steel circular saw blade, as they can be purchased for as little as $4. Diamond blades are often rented however.
It is recommended that you should sharpen your circular saw about once a year. However if you are a heavy user of your circular saw then you should sharpen once every six months.
Every time you start to have the lubrication strip turn white it is time to change the blades.
The best way to judge when your blades need to be changed is to look for streaking of the water being wiped away or for chips and breaks along the points of contact. These are the best indicators of the need for new blades.
weekly
Passwords should be changed every month.
According to my dealer, it should be changed at 150,000 km.
When its old
weekly
When it is dirty.