90 ml SAE 20W Replacing the seal ring and removing the fork rod- Remove lower screw (1).- Drain the oil from the suspension.- Remove the fork rod.- Replace seal rings (3), (4) and (5) with new ones.- Fit the new rings after lubricating their seats.- Reinsert the fork rod;- Unscrew plug (2);- Fit from the top a suitable wrench of 12mm in order toblock the pumping element. Refit the lower screw (1).- Pour in 90 cc of “Fork PG” SAE 20W oil;- Reassemble by following the reverse procedure