Mercury 135 Verado Manual page 105

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Check engine water separating fuel filter for contaminants.
Clean and/or replace filter. See Fuel System.
Check corrosion control anodes. Check more frequently when
used in salt water. See Corrosion Control Anodes.
Drain and replace gearcase lubricant. See Gearcase
Lubrication.
Check power trim fluid. See Checking Power Trim Fluid.
Check power steering fluid (if so equipped). See Checking
Power Steering Fluid.
Inspect battery. See Battery Inspection.
Saltwater usage. Remove and inspect spark plugs for
corrosion and replace spark plugs as necessary. Apply a thin
coating of Anti‑Seize Compound only on threads of spark plug
prior to installation. See Maintenance - Spark Plug
Inspection and Replacement.
Tube Ref No.
Anti-Seize
81
Compound
Check wiring and connectors.
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.
EVERY 300 HOURS OF USE OR THREE YEARS
IMPORTANT: Engine oil must be drained before removing
gearcase to avoid oil spillage. Perform scheduled water pump
replacement in combination with an engine oil change.
Replace water pump impeller (more often if overheating
occurs or reduced water pressure is noted).
MAINTENANCE
Description
97
Where Used
Spark plug threads
Part No.
92-881091K1
1.

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