What's holding the front cover is the Z digital depth gauge. Move the cover back and forth so as to get at the 4 screws that hold the gauge in. (Make absolutely sure that power is disconnected) Then wiggle the gauge until it comes out. There are no wires--it's battery operated.
You may want to LEAVE it out as this gauge can short out and destroy the motor electronics. Otherwise, there is little use removing the front cover--This WON'T give you access to the spindle.
There are teardown and spindle disassembly instructions (See Arc Euro) here: