Mercury 125 OptiMax, Owner'S Manual

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MAINTENANCE
eng
63
• Replace spark plugs at first 100 hours or first year. After
that, inspect spark plugs every 100 hours or once yearly.
Replace spark plugs as needed. See Spark Plug Inspection
and Replacement.
• Replace fuel filter. See Fuel System.
• Replace compressor air intake filter. See
Compressor Air
Intake Filter
.
• Inspect alternator belt. See
Alternator Belt Inspection
.
• Retorque the outboard mounting fasteners that fasten the
outboard to the boat transom. Tighten the fasteners to the
specified torque.
1.
Description Nm lb‑in. lb‑ft
Outboard mounting locknuts and
bolts ‑ standard boat transom
75 55
Outboard mounting locknuts and
bolts ‑ metal lift plates and setback
brackets
122 90
• Check corrosion control anodes. Check more frequently
when used in saltwater. See Corrosion Control Anode.
• Drain and replace gearcase lubricant. See Gearcase
Lubrication.
• Check power trim fluid. See Checking Power Trim Fluid.
• Inspect battery. See Battery Inspection.
• Check control cable adjustments.
1.
• Lubricate splines on the driveshaft and shift shaft.
1.
• Check tightness of bolts, nuts, and other fasteners.
• Check cowl seals to make sure seals are intact and not
damaged.
• Check internal cowl sound reduction foam (if equipped) to
make sure foam is intact and not damaged.
• Check that the intake silencer (if equipped) is in place.
• Check that the idle relief muffler (if equipped) is in place.
• Check for loose hose clamps and rubber boots (if equipped)
on the air intake assembly.
1. These items should be serviced by an authorized dealer.