A Immediately stop the machine and check if the grinding wheel is damaged or installed eccentrically, and confirm that no foreign objects have entered the machine casing; if the noise persists after ruling out external factors, contact after-sales service for professional inspection and repair of the bearings or gearbox.

A Check if the charging port is clean to avoid poor contact; use the original charger to complete a full charge and discharge cycle to activate the battery; if battery life issues persist, the battery pack aging needs to be checked and replaced with a new battery that meets the specifications.

A Loosen the cutting head fixing bolts, adjust to the desired angle using the scale, and then retighten the bolts. It is recommended to use an angle gauge for secondary verification to ensure that the cutting accuracy meets professional construction requirements.

A Immediately stop using the machine. Check if the cooling vents are blocked and clean any accumulated dust. Allow the machine to cool down. If overheating persists, check for carbon brush wear or motor coil failure, and contact after-sales service for professional inspection.

A First, turn off the power and remove the protective cover. Check if the saw blade mounting hole matches the spindle size. Use a special wrench to tighten the clamping nut. Finally, install the protective cover and perform a no-load test to confirm there is no wobbling.