Did you mean starter for flourescent light? Easy way is to switch the starter from a good one  if is really a starter problem...do the same thing with the flourescent light bulb....otherwise it is the ballast that needs replacement

95 weight oil...usually called gear oil

Make sure that you set your meter on the higher range than you are testing. It should be on volts dc if you are testing the batteries...voltage ac if you you are on the charger power source of the charger...check also the on/off switch then to forward/reverse and to the foot pedal