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Use polarized plugs, avoid wet conditions, and do not abuse cords.
Use proper guard, ensure rated speed, use fiberglass-reinforced wheels, check for cracks.
Avoid spindle damage, don't use wood blades, hold firmly, keep hands away from parts, watch sparks, wear protective apparel.
Mount guard with protrusion aligned, tighten lever. Closed side of guard must point towards operator.
Use supplied guard. Mount inner flange, fit wheel/disc, screw lock nut. Press shaft lock to tighten.
Do not force tool, replace dropped wheels, avoid banging, avoid bouncing/snagging, never use wood blades.
Hold firmly, apply wheel/disc at 15° angle. Break-in new wheels properly.