Cleaning the rear vents of a rangemaster

t3rm3y

Hi, I believe we have a rangemaster Kitchener 90cm. It is electric , the top glass looks like it should lift up , pivot at the rear, but I can't fathom how. There are two vents at the rear and they are encrusted with dirt. I can access the left one (looking from the rear) as has screws but the right side has no screws just look like those rivets or something. 
Online I can't find much, one post mentions using a toothbrush or blade but that won't rid it. 
Has anyone got this over or similar and know how to access the vents?

jusferbrowsing

Not exactly what you're looking to do but it does show how to release the top https://www.youtube.com/watch?v=mwfCf3ZMkFY