Kt5881 bias

[Garyk]

This is my first post here.
I'm not really worthy, as I cheated and bought my lovely KT5881 2nd hand and fully built.
it was my first dabble into valves and it has changed everything.
I know nothing about electronics.....I can solder some plugs on interconnects and that's my lot.
Currently the power valves are sovtek 5881 WXT
then 2 x mullard EF86 and 2 x sovtek 12AX7WA
I recently swapped the 12AX7WA for groove tubes.....and tried to run them in but couldn't wait to get my sovtek back in their rightful place
I have ordered a quad of valves to try on the back line.
after all that babble, my question is

does my amp have a self biasing mechanism or do I need to get my hands dusty.
I understand the principles / necessity of biasing etc and happy to have a go with my multimeter.
but equally happy to leave well alone.