Makita 9924DB Electric Sanders & Polishers "dust collector" Questions

...dust collector cover, I can not remove the cover is there a latch or something I am missing to remove this cover? I need to remove to replace the dust bag.... Look at eReplacementParts.com and the ...

dust collector...I have a lot to do and don't want to lose time handing it back - any suggestions? The dust go's thru holes in sander pad. Im prety sure u have to poke holes in the paper. like

dust collector why would the sander stop collecting the dust? dust collectors usually work off the motor via a fan. Either the fan is broken or the bag is blocked up.If the bag is too dirty inside you