the lower guard on my makita circular saw is sticking and not closing fast. is this safe to use?

No. Do not operate the saw if the lower guard does not move freely and close instantly. A malfunctioning guard is a severe safety hazard.

• Primary Cause: Built-up debris, gummy deposits (sawdust/pitch), or physical damage from being dropped.

FIX:

1. Retract the lower guard manually using the handle and inspect it. Look for visible debris, bent metal, or damage.
2. Clean the guard mechanism thoroughly. Remove any accumulated sawdust, wood pitch, or residue. You may need to remove the blade for full access.
3. Check the lower guard spring. If it or the guard is not operating properly, they must be serviced by a qualified repair person before any further use.
4. Never clamp or tie the lower guard into the open position.

IF THAT DIDN'T WORK: The guard or spring is likely damaged internally. This is not a user-serviceable item. Have your power tool serviced by a qualified repair person using only identical replacement parts.

HEADS UP: Before setting the tool down after a cut, always confirm the lower guard has closed and the blade has stopped coasting. An exposed, coasting blade can cause the saw to walk backwards and cut whatever is in its path.