The high mast mobile lighting tower oil filter cup is cleaned every 6 months. The process is as follows:
a. Open the fuel valve to the OFF position, open the oil filter cup counterclockwise, and remove the O-ring and filter screen.
b. Clean oil filter cups, strainers and O-rings with solvent.
c. Replace the rubber liner and tighten the oil filter cup.
d. Check that the fuel filter is dirty or blocked. If it cannot be cleaned, replace the fuel filter through the outlet.
