Getting on with it

[mudstuck]

Hi,as previously posted on here I have bought an 1986 rd125 for hill climbing events so...
I intend getting an MOT as a starting point but first....
Oil light is on when running?
Want to change gearbox oil,how much?What oil?
Best spark plug?
New chain and sprockets required so recommendations?
Thanks in anticipation Mark.

[mudstuck]

Hi,Tony thanks for your reply,just took it off my recently acquired motorbike lift as front brakes are binding on my versys 650😉