Changing brushes in mitre saw motor?

I have a Wickes Sliding Compound Mitre saw 1500w and think I need to replace the motor brushes. I was expecting to find an easily removable cover to expose the brushes but instead find two short bolts at the motor end plus 4 longer bolts that may be securing the motor itself. Can anyone tell me how to gain access to the brushes without removing the whole motor, please.? Thanks.