Circular Electric Saw, flashing think brushes

[Diyisfun]

My 1300w electric circular saw (I use only to cut pallets for fire wood), is not treated with kindness, has now started to spark & sometimes wont start, is this a sign of worn brushes or is it on its last legs. The saw has a model No M1Y-YH19-185 Bought it from b&q 3years ago.
Just attached the image dimensions for the carbon are 5 x 10 & its worn down to 6 so I don't know the original length. The brass connector at the other end is 8 x 10.
All dimensions mm.
There seems so a wide choice of brushes its hard to know where to start with a manufactures saw name. Any help/tips appreciated.

 

[Burnerman]

I think its telling you that it hasn't too long to go....those brushes, although getting a little short should work fine so long as they can slide in their holders.
When you insert them, you should feel them contact the commutator and still have some spring pressure before the plastic screws are turned in.
John

 

[Diyisfun]

Took the other brush out, it was well worn, based on what I have been reading, I am going for new brushes if I can find them. They are only about £5

 

[big-all]

sometimes the brushes and commutator can glaze over if stored in a cold damp place
you can clean the commutator with nothing more abrasive than brasso or silver polish
and the brushes with emery or very fine file

 

[Diyisfun]

BA, Thanks re cleaning advice, just trying to find brushes now, what a choice