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Mercury MCM Series Important Information Manual

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IMPORTANT INFORMATION
1
B
72526
MAINTENANCE
Index

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Summary of Contents for Mercury MCM Series

  • Page 1 IMPORTANT INFORMATION 72526 MAINTENANCE Index...

  • Page 2: Table Of Contents

    Table of Contents Page Maintenance Schedule ....1B-1 Maintenance Intervals ....1B-1 To Be Done by Dealer .

  • Page 3: Maintenance Schedule

    Maintenance Schedule Maintenance Intervals Maintenance intervals and the tasks to be performed, as shown in this current schedule, or as found in a pre- viously printed schedules, are generally based on an average boating application and environment. However, individual operating habits and personal maintenance preferences can have an impact on the suggested inter- vals.

  • Page 4: To Be Done By Dealer

    Maintenance Schedule (Continued) To Be Done by Dealer NOTE: Only perform maintenance which applies to your particular power package. Task Interval Whenever insufficient seawater flow is suspected. Seawater Pickup Pump - Disassemble and inspect (If operating temperature exceeds normal range.) Crankcase Oil and Filter Change Ignition system - Clean and Inspect condition.
  • Page 5 Maintenance Schedule (Continued) To Be Done by Dealer NOTE: Only perform maintenance which applies to your particular power package. Task Interval Steering Head and Remote Control - Inspect and End of first boating season and thereafter, every Lubricate. 100 hours of operation or once yearly whichever 100 hours of operation or once yearly, whichever Carburetor (If So Equipped) - Inspect and adjust.

  • Page 6: Tune-Up Specifications

    Tune-Up Specifications MCM (Stern Drive) MCM 7.4L MCM 502 MCM 454 MCM 454 MCM 502 Model MCM 7.4L PT Bravo Magnum Magnum Three Magnum Propshaft Ratings 300 (224) 300 (224) 350 (261) 385 (287) 390 (291) 415 (309) HP (KW Number of Cylinders Displacement 454 C.I.D (7.4L)

  • Page 7: Mie (Inboard)

    MIE (Inboard) Model MIE 7.4L MIE 454 EFI MIE 8.2L Propshaft Ratings 310 (231) 395 (231) 400 (298) HP (KW) Number of Cylinders Displacement 454 C.I.D (7.4L) 502 C.I.D. (8.2L) Bore/Stroke 4.25x4.00 In. (108x101.6 mm) 4.47x4.00 (113.5x101.6) Compression Ratio 8.0:1 8.6:1 Compression Pressure 150 PSI (1034 kPa)

  • Page 8: Fluid Capacities

    Fluid Capacities NOTICE All capacities are approximate fluid measures. All capacities are U.S. Quarts (Litres). MCM AND MIE MCM AND MIE MCM AND MIE MODEL 454 CID / 7.4L 7.4L MPI 502 CID / 8.2L Crankcase Oil (With Filter) 7 (6.6) 7 (6.6) Seawater Cooling System 20 (19)

  • Page 9: All Models

    All Models After Break-in Period 20-Hour Break-In Period To help extend the life of your MerCruiser power package, the following recommendations should be IMPORTANT: The first 20 hours of operation is considered; the engine break-in period. Correct break-in is Use a propeller that allows the engine to operate essential to obtain minimum oil consumption at or near the top of the maximum RPM range and maximum engine performance.

  • Page 10: Fuel Specifications

    Fuel Specifications sign of leakage or deterioration requires replace- ment before further engine operation. Because of possible adverse effects of alcohol in Fuel gasoline, it is recommended that only alco- hol-free gasoline be used where possible. If only fuel containing alcohol is available, or if the pres- CAUTION ence of alcohol is unknown, increased inspec- Use of improper gasoline can damage the engine...

  • Page 11: Crankcase Oil

    The effects of gasoline with ETHANOL and METHA- NOL are still being evaluated by the United States Coast Guard, the National Marine Manufacturers As- sociation (NMMA), Mercury Marine and other engine and boat manufacturers. We have recommended pump posting of alcohol content of gasoline.

  • Page 12: Power Steering Fluid

    Power Steering Fluid you are not getting a “false reading,” make sure the following steps are done before checking the oil level. Use Quicksilver Power Trim and Steering Fluid, or Boat “at rest” in the water, or automatic transmission Fluid (ATF), Dexron, Dexron II, Dexron IIl.

  • Page 13: Maintaining Power Steering Pump Fluid Level

    NOTE: If drain plug is not accessible because of boat 3. Level should be between the FULL HOT mark construction, oil may be removed through dipstick and ADD mark on dipstick. tube, using a Quicksilver Crankcase Oil Pump. (See Quicksilver Accessory Guide.) 4.

  • Page 14: Filling And Bleeding Power Steering System 1B-12

    4. If level is below bottom of dipstick, but fluid is still 2. Turn steering wheel back and forth to end of trav- visible in pump reservoir, add required amount of el in each direction several times, then recheck Quicksilver Power Trim and Steering Fluid or au- fluid level and add fluid, if necessary.

  • Page 15: Maintaining Closed Cooling Coolant Level

    Maintaining Closed Cooling Flushing Cooling System Coolant Level If engine is operated in salty, polluted, or mineral-lad- en water, flush cooling system (preferably after each use) to reduce corrosion and prevent the accumula- WARNING tion of deposits in the system. Thoroughly flush cool- ing system prior to storage.
  • Page 16 4. Lower drive unit to full IN position. CAUTION Watch temperature gauge on dash to ensure that CAUTION engine does not overheat. Do not run engine above 1500 RPM when flush- 3. Partially open water tap (approximately 1/2 maxi- ing. Suction created by seawater pickup pump mum capacity).

  • Page 17: Mie (Inboard)

    MIE (Inboard) CAUTION Watch temperature gauge on dash to ensure that engine does not overheat. CAUTION If boat is in the water, seacock, if so equipped, 6. Operate engine at idle speed in neutral for 10 must remain closed until engine is to be minutes, or until discharge water is clear.

  • Page 18: Lubrication

    Lubrication Throttle Cable MODELS WITH 4 BARREL CARBURETOR 72526 Velvet Drive IMPORTANT: To accurately check fluid level, en- gine MUST BE run at 1500 RPM for 2 minutes im- mediately prior to checking level. 72014 2. Start engine and run at 1500 RPM for 2 minutes to fill all circuits, lines, and cooler.

  • Page 19: Shift Cable

    MODELS WITH MULTI-PORT FUEL INJECTION MIE MODEL TYPICAL SHIFT CABLE AND TRANSMISSION LINKAGE 72791 a - Pivot Points b - Guide Contact Surface 71208 Shift Cable Hurth a - Pivot Points b - Guide Contact Surface 72016 MCM Models - Typical Shift Cable a - Pivot Points b - Guide Contact Surface 72528...

  • Page 20: Engine Coupler/U-Joint Shaft Splines

    Engine Coupler/U-Joint Shaft Splines Drive Shaft Extension Models NOTE: Engine coupler and shaft splines are greased with Quicksilver Engine Coupler Spline Grease, 92-816391A4; universal joints are greased with Quicksilver 2-4-C Marine Lubricant. NOTE: Refer to MerCruiser Stern Drive Service Manual for stern drive unit removal and installation, if necessary.

  • Page 21: Starter Motor

    Starter Motor Cold Weather or Extended Storage MIE MODELS WARNING Precautions When performing the following procedure, be sure to observe the following: WARNING Be sure that engine compartment is well venti- BE CAREFUL while working on fuel system; gas- lated and that no gasoline vapors are present oline is extremely flammable and highly explo- to avoid the possibility of a fire.

  • Page 22: Layup

    IMPORTANT: Observe the following information Layup to ensure complete draining of cooling system. NOTICE Engine must be as level as possible. Refer to “Cold Weather or Extended Storage,” A wire should be repeatedly inserted into all “Precautions,” in this section, BEFORE proceed- drain holes to ensure there are no obstruc- ing.
  • Page 23 (1) Relieve fuel pressure from system. Refer (4) Allow engine to cool down. to “Fuel Pressure Relief Procedure” in (5) Remove the water separating fuel filter. Section 5C. (6) Pour out a small amount of fuel into a suit- (2) Remove plug from top of vapor separator able container, then add approximately 2 tank.

  • Page 24: Draining Instructions

    Draining Instructions 4. Remove hose or drain plug from bottom of port and starboard exhaust manifolds. DRAINING SEAWATER (RAW-WATER) COOLED NOTE: With the engine level, sufficient draining of MODELS manifolds will occur when the hose or drain plug is re- moved from the elbow in the exhaust manifold.
  • Page 25 5. Remove the engine water circulating pump hose 7. On Cool Fuel Models or Carbureted models as shown. wit port side water tube: Remove the drain screw from the fuel cooler. 72587 a - Hose, Water Circulating Pump To Thermostat Housing 6.
  • Page 26 8. On 502 Engines: Remove the oil/power steering a. Remove seawater pump inlet hose as shown. fluid cooler seawater hoses, as shown. 70346 Engines With Combination Seawater / Mechani- 72926 cal Fuel Pump a - Seawater Pickup Pump b - Inlet Hose a - Hose, Seawater Pump To Cooler 72352 Engines WIth Cool Fuel System...
  • Page 27 9. Insert a small wire (repeatedly) to make sure that IMPORTANT: MerCruiser recommends that pro- speedometer pitot tube, trim tab cavity vent hole, pylene glycol antifreeze (nontoxic and biode- and trim tab cavity drain passage are unob- gradable, which makes it friendly to lakes and riv- structed and drained.
  • Page 28 MIE (Inboard) Models: NOTE: Some engines may be equipped with drain plugs in the elbows on exhaust manifolds. Remove NOTICE drain plugs only. Refer to “Cold Weather or Extended Storage,” “Precautions,” in this section, BEFORE proceeding. 1. Engine must be as level as possible to ensure complete draining of cooling system.
  • Page 29 5. Remove the engine water circulating pump hose as shown. 72352 Engines WIth Cool Fuel System a - Seawater Inlet Hose b - Hose To Cooler 7. Remove the transmission fluid cooler hose as shown. 72587 a - Hose, Water Circulating Pump To Thermostat Housing 6.
  • Page 30 8. Crank engine over slightly with starter motor to 10. For additional assurance against freezing and purge any water trapped in seawater pickup rust, remove the thermostat cover and thermo- pump. DO NOT ALLOW ENGINE TO START. stat. Fill the engine seawater cooling system with a mixture of antifreeze and tap water mixed to 9.
  • Page 31 DRAINING SEAWATER SECTION OF CLOSED 4. Remove hose from engine oil/power steering COOLING (COOLANT) MODELS fluid cooler as shown. MCM (Stern Drive) Models: NOTICE Refer to “Cold Weather or Extended Storage,” “Precautions,” in this section, BEFORE proceeding. 1. Engine must be as level as possible to ensure complete draining of cooling system.
  • Page 32 5. Remove seawater pump inlet hose as shown. 6. Follow instructions “a” or “b”: a. On Engines Without Risers: Disconnect “T”-fitting-to-heat exchanger hose from heat exchanger. 71170 Engines With Combination Seawater / Mechani- cal Fuel Pump a - Seawater Inlet Hose b - Hose To Cooler 70586 Typical Engine Without Risers Shown...
  • Page 33 7. On Bravo Drive Equipped Models: Insert a MIE (Inboard) Models small wire (repeatedly) to make sure that speed- ometer pitot tube, trim tab cavity vent hole, and NOTICE trim tab cavity drain passage are unobstructed Refer to “Cold Weather or Extended and drained.
  • Page 34 3. On Engines with 3 in. (76 mm) or 6 in. (152 NOTE: Engine oil cooler is mounted beneath rear mounted heat exchanger tank. mm) Risers: Remove heat exchanger-to-riser hose from port and starboard riser. 71447 71507 7.4L Engine With Rear Mounted Heat Exchanger Typical Engine With 3 in.
  • Page 35 5. Remove the transmission fluid cooler hose, as 6. Remove seawater pump inlet hose as shown. appropriate on your engine, to drain hose and cooler. 71170 Engines Combination Seawater Pump / Mechani- cal Fuel Pump a - Seawater Inlet Hose b - Hose To Cooler 71782 7.4L Engine With Rear Mounted Heat Exchanger...

  • Page 36: Recommissioning

    Recommissioning NOTICE Refer to “Cold Weather or Extended Storage,” “Precautions,” in this section, BEFORE proceeding. 1. Check that all cooling system hoses are con- nected and tight and all petcocks and drain plugs are installed and tight. 2. Inspect all drive belts. 3.

This manual is also suitable for:

Mie seriesMcm 7.4lMcm 7.4l pt bravo threeMcm 454 magnumMcm 454 efiMcm 502 magnum ... Show all

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