The blade cover could get stuck in its open position.
Makita has recalled its 5057KB 185mm dustless circular saw. When the saw base is adjusted to approximately 45° tilt, the blade cover does not fully open. If it is forced open the blade cover could get stuck in its open position.
Affected 5057KB 185mm dustless circular saws have serial numbers in the following ranges:
The saws were sold at power tool outlets nationwide from March to September 2016.
Stop using your saw. Check its model and serial number to see if it is affected.
If it is included within the recall, take the saw into the store you bought it from or to your nearest authorised Makita service agent. Makita will arrange a free modification to replace the saw base.