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Outboard Care

To keep your outboard in the best operating condition, it is important that
your outboard receive the periodic inspections and maintenance listed in
the Inspection and Maintenance Schedule. We urge you to keep it
maintained properly to ensure the safety of you and your passengers, and
retain its dependability.
Neglected inspection and maintenance service of your outboard or
attempting to perform maintenance or repair on your outboard if you are
not familiar with the correct service and safety procedures could cause
personal injury, death, or product failure.
Record maintenance performed in Maintenance Log at the back of this
book. Save all maintenance work orders and receipts.
SELECTING REPLACEMENT PARTS FOR YOUR OUTBOARD
We recommend using original Mercury Precision or Quicksilver
replacement parts and Genuine Lubricants.
Using a replacement part that is inferior to the original part could result
in personal injury, death, or product failure.

EPA Emissions Regulations

All new outboards manufactured by Mercury Marine are certified to the
United States Environmental Protection Agency, as conforming to the
requirements of the regulations for the control of air pollution from new
outboard motors. This certification is contingent on certain adjustments set
to factory standards. For this reason, the factory procedure for servicing
the product must be strictly followed and, wherever practicable, returned
to the original intent of the design. Maintenance, replacement, or repair of
the emission control devices and systems may be performed by any marine
spark ignition (SI) engine repair establishment or individual.
MAINTENANCE
WARNING
!
WARNING
!
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Summary of Contents for Mercury Outboard Motor

  • Page 1: Outboard Care

    EPA Emissions Regulations All new outboards manufactured by Mercury Marine are certified to the United States Environmental Protection Agency, as conforming to the requirements of the regulations for the control of air pollution from new outboard motors.
  • Page 2: Owner Responsibility

    MAINTENANCE EMISSION CERTIFICATION LABEL An emission certification label, showing emission levels and engine specifications directly related to emissions, is placed on the engine at time of manufacture. ob00366 Idle speed Family number Engine horsepower Maximum emission output for the engine family Piston displacement Timing specification Date of manufacture...
  • Page 3: After Each Use

    This will help prevent a buildup of deposits from clogging the internal water passages. Use a Mercury Precision or Quicksilver accessory (or equivalent) flushing attachment. NOTE: Do not run the engine while flushing the cooling system.
  • Page 4: Top Cowl Removal And Installation

    MAINTENANCE 3. Remove the thread‑in hose coupling and reinstall plug and gasket. ob00484 Gasket Thread‑in hose coupling Top Cowl Removal And Installation REMOVAL 1. Unlock the rear latch by pushing lever down. ob00485 2. Lift rear of cowl and disengage front hook. ob00486 INSTALLATION 1.
  • Page 5: Corrosion Control Anode

    MAINTENANCE Corrosion Control Anode Your outboard has a corrosion control anode installed on the gearcase. An anode helps protect the outboard against galvanic corrosion by sacrificing its metal to be slowly corroded instead of the outboard metals. The anode requires periodic inspection especially in salt water which will accelerate the erosion.
  • Page 6: Fuel Line Filter

    MAINTENANCE FUEL LINE FILTER Inspect the fuel line filter. If the filter appears to be contaminated, remove and replace. ob00488 IMPORTANT: Visually inspect for fuel leakage from the filter connections by squeezing the primer bulb until firm, forcing fuel into the filter. FUEL LINE INSPECTION Visually inspect the fuel line and primer bulb for cracks, swelling, leaks, hardness, or other signs of deterioration or damage.
  • Page 7 (especially in salt water), always apply a coat of the recommended lubricant to the entire propeller shaft at the recommended maintenance intervals and also each time the propeller is removed. 6. Coat the propeller shaft with Quicksilver or Mercury Precision Lubricants Anti‑Corrosion Grease or 2‑4‑C. ob00490 Tube Ref No.
  • Page 8: Spark Plug Inspection And Replacement

    MAINTENANCE 8. Place a block of wood between gearcase and propeller to prevent rotation and tighten propeller nut. Secure propeller nut to the shaft with cotter pin. ob00489 Cotter pin Propeller Propeller nut Front thrust washer Rear thrust hub Spark Plug Inspection And Replacement WARNING Avoid serious injury or death from fire or explosion caused by damaged spark plug boots.
  • Page 9: Lubrication Points

    Install plug finger tight, and then tighten 1/4 turn or torque to specifications. Description lb. in. lb. ft. Spark plug Lubrication Points 1. Lubricate the following with Quicksilver or Mercury Precision Lubricants 2‑4‑C or Special Lubricant 101. Tube Ref No. Description Where Used Part No. Co-pilot, swivel...
  • Page 10 MAINTENANCE • Swivel Bracket ‑ Lubricate through fittings. ob00491 Swivel bracket Co‑pilot • Transom Clamp Screws ‑ Lubricate threads. ob00492 NOTE: Lubricating the tiller handle bushing and shift handle detent requires disassembly of the product. These points should be lubricated at least once a year by an authorized dealer.
  • Page 11: Changing Engine Oil

    MAINTENANCE • Tilt Pivot. ob00495 3. Lubricate the following with Quicksilver or Mercury Precision Lubricants Anti‑Corrosion Grease or 2‑4‑C. Tube Ref No. Description Where Used Part No. 92-802867A Anti-Corrosion Grease Propeller shaft 92-802859A 2-4-C Propeller shaft • Propeller Shaft ‑ Refer to Propeller Replacement for removal and installation of the propeller.
  • Page 12: Oil Filling

    MAINTENANCE IMPORTANT: Inspect oil for signs of contamination. Oil contaminated with water will have a milky color to it; oil contaminated with fuel will have a stong fuel smell. If contaminated oil is noticed, have the engine checked by your dealer. ob00496 Drain plug OIL FILLING...
  • Page 13: Gearcase Lubricant Capacity

    GEARCASE LUBRICANT CAPACITY Gearcase lubricant capacity is approximately 195 ml (6.6 fl. oz.). GEARCASE LUBRICANT RECOMMENDATION Mercury or Quicksilver Premium or High Performance Gear Lubricant. CHECKING LUBRICANT LEVEL AND REFILLING GEARCASE 1. Place outboard in a vertical operating position. 2. Remove vent plug from vent hole.
  • Page 14: Submerged Outboard

    MAINTENANCE 3. Place lubricant tube into the fill hole and add lubricant until it appears at the vent hole. ob00498 Vent plug Fill/drain plug Lubricant at vent hole IMPORTANT: Replace sealing washers if damaged. 4. Stop adding lubricant. Install the vent plug and sealing washer before removing the lubricant tube.

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