Before mounting any blade on the saw, the blade should be inspected for any damage which might have occurred during shipment, handling or previous use.2. The blade collars and arbors should be cleaned and examined for damage before mounting the blade.3. The blade must be properly fitted over the arbor.4. The blade shaft nut, which is a left-hand thread nut, must be tightened securely against the outside blade shaft collar.5. The blade must be operated within the specified maximum operating speed listed on the blade.6. The blade guard must be in place with the blade collar guard closed when the saw is running.