Maintenance What type of maintenance should be performed on this shreader?

I am sure you have already solved it or moved on but johnd393's comment at https://www.fixya.com/support/t1766897-disassemble_mailmate_spl_727mm helped me.
To reach the screws in the tray drill 6 holes in the bottom plastic and use a really long screwdriver to access them.

I used a 12 inch uxcell #1 Phillips screwdriver, which also worked on the 2 long screw holes hidden under the feet. You could probably get away with 10 inch or a #2 Phillips but with #2 screwdrivers check the width of the shaft first as the screw holes under the feet were too small for the #2 I originally bought.

There's a website that has all this information about all this and manuals everything totally free there are many actually but I personally like few .. let me know if u need help
thanks

Please try to perform a maintenance cleaning as this is caused by a clogged nozzle.. this may also depend on the type of printer you are using.... by the way what type of printer are you using as the maintenance can be performed by either thru the driver (on your computer) or through the printer itself. the process is called HEAD cleaning.

do it for about 3x. note: head cleaning takes in ink and may cause the ink level to go down.

hope this helps ...

Taked the broken belt to the auto parts store for a replacement.

One of the drive gears has stripped its teeth, usually caused by overloading the machine. These are personal shredders and parts are not available in my experience.Sorry.

Sounds like the carb is gummed up. Do a complete carb cleaning and see if it helps.

is it the drive gear or is it that the shreader is dull that makes the shreader sluggish?

www.gopresto.com you can order parts here!
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I have seen many shreaders that are caked with paper underneath the blades.
After you remove the power, turn the shreader upside down (if possible )and completely clean the area.
Make sure you use shreader oil after you clean it

There is probably astripped or broken gear inside the gear box.