Hydraulic oil level

[chriss]

Just got my first e27n with smiths hydraulics but the arms went down but won't come up my first thought was oil I'm guessing it's filled from the back but where's the level plug

[chriss]

Have been told the filler is filler/level plug and drained via the bottom cover bolt and should take 2 gallons of sae 20 oil hope this helps anyone