How did you test the starter? I usually use jumper cables. Hook one end of the cables to a good battery. Ground the other end to the starter casing and just touch the hot to the positive terminal on the starter. If it's good, it should turn. Be careful and don't let the two ends of the jumper cables touch or they will arc.
Since I don't live in the UK, I don't know where in the UK you can get the brushes. You can order them from Ebay, though.
STARTER REBUILD REPAIR KIT HONDA TRX300FW 300 281CC : eBay Motors (item 330423032851 end time May-11-10 12:46:27 PDT)
Since I don't live in the UK, I don't know where in the UK you can get the brushes. You can order them from Ebay, though.
STARTER REBUILD REPAIR KIT HONDA TRX300FW 300 281CC : eBay Motors (item 330423032851 end time May-11-10 12:46:27 PDT)