Makita Belt Sander 9404 - dust collection bag not collecting the dust. Shooting dust out the front. What can be done to remedy this?

Question edited.
Question moved from Cars and Trucks to model category.

Help in the link, including Makita spares.

https://www.google.com/search?q=makita+2703+dust+collection+bags

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More than likely, it is Clogged...

I have a sander similar to this one. \Have the same problem from time to time. Usual problems are
1- the feed hole that leads to the collection bag gets plugged up.
2- you do have thew collection bag don't you?
3- the collection bag gets plugged up so no air will go through it. Wash the bag out then let it air dry.
4- it might have the connection on it for a vacuum

you will have to hold arnature and unscrew fan from it.
https://www.ereplacementparts.com/makita-9404-belt-sander-parts-c-97_103_535.html

It could have a piece of sanding belt in the passageway. What I have done is get a shop vac and VERY carefully run the tool with no belt and put the hose end over the exhaust port, This sometimes works short of disassembly. You might also want to gently tap the side cover to loosen up the dust.

Hi Mark,
Hear is an exploded parts diagram for the sander:

http://www.powertoolspares.com/tool/makita/spares-and-accessories-for-9404/9404/spares/

Remove the three screws on the handle cover part 23 to expose the cable connection to the trigger switch.

Best way to clear the vacuum path: remove the sanding belt and collection bag. Use an airhose to blow compressed air through the opening where the bag attaches to blow out anything that may be in the airway. After blowing through the outlet, check around the rear of the drive pulley for any wood that may have to be picked out. Reattach everything and try it again. If it still doesn't work, the vacuum is driven by a fan on the end of the armature. You'll have to take the case apart and check that to see if the fan blades have broken off or the fan has come lose from the armature.

Are you using the punch plate to put holes in the sand paper after you put on a new sheet?
If you are it could have an obstruction in the fan guide or the fan has broken fins. Both the punch plate and fan can be purchased by clicking on the below link.
http://www.ereplacementparts.com/makita-bo4552-finishing-sander-parts-c-97_103_482.html?osCsid=s71te2ssm60u2ga80vaqah9f85

The belt cover that does down the front of the belt, below the table, should have an opening inside the baes/vacuum unit. Make sure this isn't clogged with buildup.

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 don't get any airflow through the bag which can stop it collecting. A good wash should do the trick