. MAINTENANCE MAINTENANCE PROCEDURE MAINTENANCE MAINTENANCE PROCEDURE 5. Set a container direct under the drain plug located on the machine's underside to catch oil that is drained. Remove drain plug (P). 6. Add the replacement amount of oil through oil filler (F). Check Tank, Add Oil (PAGE 3-70)". 4 - 73 plug ( and if 1) and it has drain the o a scratch o il. Check a r damage, n O-ring replace it installed to with new Plug one. (1), After draini ng the oil, t ighten drain plug Th e specified tightening torque is 68.6 ± 9.81 N·m (7 ± 1 kgf , 50.6 ke car ± 7.2 e not lbft) to ge that th e oil le vel i s between the H and L line s on t he si ght gauge (G). For d