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8274/9274 SAFETY INSTRUCTIONS
• Only qualified, trained personnel should operate this unit.
• Loose or damaged parts should be replaced immediately. Failure to do so could cause equipment
damage or serious injury.
• Switches and levers should be inspected. Do not use if defective.
• Power control box, motor and switches should be completely enclosed at all times with no
exposed wiring.
• Disconnect power from unit before servicing. Failure to do so can cause electrical shock.
• Only use National components. Failure to do so could cause damage or serious injury.
• Always be aware of support personnel and their proximity when in operation. Block off work area.
• Support personnel should never stand next to machine, in front of or behind machine while machine is
running. Failure to do so could cause serious bodily injury or death.
• Manual should be kept with machine in supplied holder for access by operator at all times.
• Always wear eye protection when running machine.
• Never defeat switches or guards.
• Remove blade when machine is not in use and/or lower cutting head to floor. Failure to do so could
cause serious bodily injury.
• Wear gloves when changing blades. Always shut machine off when changing blades.
WARNING:
Know and understand before operation. Failure to do so could cause damage to
equipment or bodily injury.
Read and understand operators instruction manual and instructional video
before operating this equipment.
WARNING:
Failure to follow any of the above instructions could cause damage to machine,
damage to property or serious bodily injury or death.
WARNING: SILICA DUST WARNING
Grinding/cutting/drilling of masonry, concrete, metal and other materials can
generate dust, mists and fumes containing chemicals known to cause serious fatal
injury or illness, such as respiratory disease, cancer, birth defects or other
reproductive harm. If you are unfamiliar with the risks associated with the particular
material being cut, review the material safety data sheet and/or consult your
employer, the material manufacturer/supplier, governmental agencies such as
OSHA and NIOSH and other sources of hazardous materials. California and some other other
authorities, for instance, have published lists of substances known to cause cancer, reproductive
toxicity, or other harmful effects. Control dust, mist and fumes at the source where possible. In this
regard use good work practices and follow the recommendations of the manufacturer/supplier,
OSHA/NIOSH, and occupational and trade associations. When the hazards from inhalation of dust,
mists and fumes cannot be eliminated, the operator and any bystanders should always wear a
respirator approved by OSHA/MSHA for the material being cut.
