I had the same problem and i fixed mine ( it is not broken) ... the tongue is the thing that is silver and has grooves that face upward, the tongue should be up compared to pressed against the shave, take a small screw driver or a kitchen knife and get under the tongue and lift it up, once this is done you need to slide it on the blades and snap it down, i found that i did not need to have the clippers on to put it back on.... at first i got confused in thinking that the tongue was the red thing at the top, and in actuality this is the thing that moves the blades to clip.... i hope this helps, once you get the tongue up the blades are on in 10 seconds...
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I had the same problem and i fixed mine ( it is not broken) ... the tongue is the thing that is silver and has grooves that face upward, the tongue should be up compared to pressed against the shave, take a small screw driver or a kitchen knife and get under the tongue and lift it up, once this is done you need to slide it on the blades and snap it down, i found that i did not need to have the clippers on to put it back on.... at first i got confused in thinking that the tongue was the red thing at the top, and in actuality this is the thing that moves the blades to clip.... i hope this helps, once you get the tongue up the blades are on in 10 seconds...