Mercruiser Engines Manual
MerCruiser Repair Manuals 1963-1973 MerCruiser Repair Manual Engines & Drives 1974-1977 MerCruiser Repair Manual Engines & Drives 1978-1984 MerCruiser Manual 4-Cyl. L6 & V8 1978-1982 MerCruiser Repair Manual Sterndrives MCM 120 Thru 260 1978-1993 MerCruiser Repair Manual TR & TRS Serndrive Units 1983-1990 MerCruiser Repair Manual R/MR Alpha One/SS Sterndrive 1983-1993 MerCruiser Repair Manual.
. Module H of Directive 2003/44/EC is: Det Norske Veritas Norway Notified Body Number: 0575 This declaration is issued under the sole responsibility of Mercury Marine and Mercury MerCruiser. Mackey President ‑ Mercury Marine, Fond du Lac, WI USA. Length The serial numbers are the manufacturer’s keys to numerous engineering details that apply to your Mercury MerCruiser® power package.
DOWNLOAD 1983-2007 MerCruiser - Mercury Inboard Engines, Outdrives (Out-Drives) & Sterndrive Service Repair Manuals delivered to your computer in seconds upon download. View and Download Mercury MerCruiser MCM 4.3L ALPHA service manual online. MerCruiser MCM 4.3L ALPHA Engine pdf manual download. Also for: Mercruiser mcm 4.3lh bravo, Mercruiser mcm 4.3l efi alpha.
When contacting your Authorized Mercury MerCruiser Dealer about service, always specify model and serial numbers. The description and specifications contained herein were in effect at the time this guide was approved for printing. Thank you for purchasing one of our Mercury MerCruiser products. We sincerely hope your boating will be pleasant! Mercury MerCruiser Warranty Message The product you have purchased comes with a limited warranty from Mercury Marine; the terms of the warranty are set forth in the Warranty Sections of this manual.
The warranty. NOTICE Indicates a situation which, if not avoided, could result in engine or major component failure. IMPORTANT: Identifies information essential to the successful completion of the task. NOTE: Indicates information that helps in the understanding of a particular step or action. WARNING The operator (driver) is responsible for the correct and safe operation of the boat, the equipment aboard and the safety of all occupants aboard. Mercury Product Protection Plan: United States and What Is Not Covered.12 Canada.3 Components Of The Emission Control System 12 Mercury MerCruiser Limited Warranty Disclaimers And Limitations.14 (Gasoline‑Fueled Products Only).4 California Emission Control Warranty Statement.14 3‑Year Limited Warranty Against Corrosion.6 Your Warranty Rights and Obligations.14. Conditions Affecting Operation.42 Elevation and Climate.43 Weight Distribution (Passengers and Gear) Propeller Selection.43 Inside the Boat.42 Getting Started.
44 The Bottom of the Boat. 42 20‑Hour Break‑In Period. 44 Cavitation.42 After Break‑In Period.44 Ventilation. 42 End of First Season Checkup. 44 Section 4 - Specifications Fuel Requirements.46 Engine Oil.47. Section 6 - Storage Cold Weather or Extended Storage.
86 Clearing Clogged Blue Drain Hoses.92 Preparing Power Package for Storage.86 Draining the Sterndrive.94 Engine and Fuel System Preparation.87 Battery Storage.95 Draining the Seawater System.88 Power Package Recommissioning.95 Single‑Point Drain System.88 Draining the Seawater Section of Models with Closed Cooling.89. Page iv 72 MARCH 2008. Mercury Product Protection Plan: United States and Components Of The Emission Control Canada.3 System.12 Mercury MerCruiser Limited Warranty (Gasoline- Disclaimers And Limitations.14 Fueled Products Only). 4 California Emission Control Warranty Statement 3-Year Limited Warranty Against Corrosion.6. A temporary Owner Warranty Registration Card will be presented to you when you purchase the product. Upon receipt of the Warranty Registration Card at the factory, Mercury MerCruiser will send you an owner resource guide that includes your warranty registration confirmation. If you do not receive your owner resource guide within 60 days from date of new product sale, please contact your selling dealer.
Section 1 - Warranty The warranty registration card identifies your name and address, product model and serial numbers, date of sale, type of use, and the selling distributor’s and dealer’s code number, name, and address. The distributor or dealer also certifies that you are the original purchaser and user of the product. One‑, two‑, three‑, four‑, or five‑ year term plans can be purchased up to 12 months after the original engine registration date. See your participating Mercury MerCruiser dealer for complete program details. Mercury MerCruiser Limited Warranty (Gasoline‑Fueled Products Only). Section 1 - Warranty Conditions That Must Be Met in Order to Obtain Warranty Coverage Warranty coverage is available only to retail customers that purchase from a dealer authorized by Mercury Marine to distribute the product in the country in which the sale occurred, and then only after the pre‑delivery inspection process specified by Mercury Marine is completed and documented. Mercury Marine warrants that each new Mercury, Mariner, Mercury Racing, Sport Jet, M Jet Drive, Tracker by Mercury Marine Outboard, MerCruiser Inboard or Sterndrive engine (Product) will not be rendered inoperative as a direct result of corrosion for the period of time described below.
Section 1 - Warranty This limited warranty does not cover electrical system corrosion; corrosion resulting from damage, corrosion which causes purely cosmetic damage, abuse or improper service; corrosion to accessories, instruments, steering systems; corrosion to factory installed jet drive unit; damage due to marine growth; product sold with less than a one year limited Product warranty. Section 1 - Warranty Commercial Application Warranty Chart Limited Corrosion Commercial Application: Standard Factory Limited Warranty by Region & Boat Brand Warranty Non-Certified Boat Brand Certified Boat Brand All Boat Brands Vazer, Standard Vazer and Vazer and Models, Models Models Scorpion Scorpion and and. Section 1 - Warranty Government Application Warranty Chart Limited Corrosion Government Application: Standard Factory Limited Warranty by Region & Boat Brand Warranty Non-Certified Boat Brand Certified Boat Brand All Boat Brands Vazer, Standard Vazer and Vazer and Models, Models Models Scorpion Scorpion and and. California Emissions Limited Warranty NOTE: Mercury Marine does not establish model years for the Mercury MerCruiser product line.
In order to comply with CARB warranty regulations, and for that limited purpose only, model year shall have the same meaning as calendar year. As an example, 2003 model year products refers to products manufactured during calendar year 2003. Duration Of Coverage NOTE: Mercury Marine does not establish model years for the Mercury MerCruiser product line. In order to comply with CARB warranty regulations, and for that limited purpose only, model year shall have the same meaning as calendar year. As an example, 2003 model.
Section 1 - Warranty How To Obtain Warranty Coverage The customer must provide Mercury with a reasonable opportunity to repair and reasonable access to the product for warranty service. Warranty claims shall be made by delivering the product for inspection to a Mercury dealer authorized to service the product. If purchaser cannot deliver the product to such a dealer, please notify Mercury Marine and Mercury will then arrange for the inspection and any covered repair.
Section 1 - Warranty Cold start enrichment system Intake valve(s) 2. Air Induction System Controlled hot air intake system Intake manifold Air filter Turbocharger systems Heat riser valve and assembly 3. Ignition System Spark plugs Magneto or electronic ignition system Spark advance/retard system Ignition coil and/or control module Ignition wires. Mercury Marine does not establish model years for the Mercury MerCruiser product line. In order to comply with CARB warranty regulations, and for that limited purpose only, model year shall have the same meaning as calendar year.
As an example, 2003 model year products refers to products manufactured during calendar year 2003. A tamper‑resistant Emission Control Information label is affixed in a visible location to the engine at time of manufacture by Mercury MerCruiser. In addition to the required emissions statement, the label lists the engine serial number, family, STD (emission standard/level), date of manufacture (month, year), and the engine displacement. Beginning January 1, 2003, one Three‑Star or Four‑Star label will be included with each factory‑certified Mercury MerCruiser engine.
All Mercury MerCruiser engines (500 hp and below) will have a Three‑Star Ultra Low Emission rating or Four‑Star Super Ultra Low Emission rating. The Star label identifies that these engines meet the California Air Resources Board's Sterndrive and Inboard marine engine 2007 and later exhaust emission standards. Section 1 - Warranty One Star - Low emission The one‑star label identifies personal watercraft, outboard, sterndrive and inboard engines that meet the Air Resources Board's Personal Watercraft and Outboard marine engine 2001 exhaust emission standards. Engines meeting these standards have 75% lower emissions than conventional carbureted two‑stroke engines. Section 1 - Warranty Notes: Page 83272 MARCH 2008.
Section 2 - Getting to Know Your Power Package Section 2 - Getting to Know Your Power Package Table of Contents Identification.20 Single Engine Trim/Trailer.26 Alpha Sterndrive Decal Identification.20 Dual Engine Trim/Trailer.27 Alpha Transom Serial Number.20 Electrical System Overload Protection. Section 2 - Getting to Know Your Power Package Identification The serial numbers are the manufacture's keys to numerous engineering details which apply to your MerCruiser power package. When contacting MerCruiser about service, always specify model and serial numbers. Alpha Sterndrive Decal Identification The Drive Serial No.
Section 2 - Getting to Know Your Power Package Engine Serial Number Decal The serial number decal is located on the aft portion of the starboard side of the block, near the starter motor. 32121 The engine, transom, and drive serial numbers are also located on the engine identification plate. Section 2 - Getting to Know Your Power Package Lanyard Stop Switch The purpose of a lanyard stop switch is to turn off the engine when the operator moves outside the operator's position (as in accidental ejection from the operator's position). 74608 Stop switch Clips to the operator. Section 2 - Getting to Know Your Power Package Accidental or unintended activation of the switch during normal operation is also a possibility. This could cause any, or all, of the following potentially hazardous situations:. Occupants could be thrown forward due to unexpected loss of forward motion, a particular concern for passengers in the front of the boat who could be ejected over the bow and possibly struck by the propulsion or steering components.
Mercruiser 470 Engine Manual
Section 2 - Getting to Know Your Power Package Remote Controls Your boat may be equipped with a Mercury Precision Parts or Quicksilver remote controls. All controls may not have all features shown. Consult your dealer for a description and/or demonstration of your remote control. Section 2 - Getting to Know Your Power Package Console Mount Features mc79503-1 Throttle Only Button Power Trim Switch Control Handle Trailer Switch Throttle Only Button - Allows engine throttle advancement without shifting the engine. This is done by disengaging the shift mechanism from the control handle. The throttle only button can be depressed only when the remote control handle is in the neutral position. Section 2 - Getting to Know Your Power Package For best performance trim the sterndrive unit so that the boat bottom is at a 3‑5° angle to the water.
3 - 5 mc79528 Trimming sterndrive unit up/out can:. Generally increase top speed.
Reset the circuit breaker. If the breaker remains open, you have not eliminated the electrical overload and the electrical system requires further checks.
Contact your authorized Mercury MerCruiser dealer. A circuit breaker protect the engine wiring harness and the instrumentation power lead. To test the circuit breaker, push the red button. Section 2 - Getting to Know Your Power Package Four fuses protect the main power, fuel pump, ignition, and accessory circuits. Two 10 amp fuses protect the O sensors. These are located on the top of the engine underneath the engine information plate.
Section 2 - Getting to Know Your Power Package In the ignition switch 'I' terminal lead, there may be a 20 amp fuse that protects the electrical system. Check for a failed fuse if you turn the ignition key to the 'START' position and nothing happens, assuming the circuit breaker is not tripped.
IMPORTANT: The audio warning system alerts the operator that a problem has occurred. It does not protect the engine from damage. Your Mercury MerCruiser power package may be equipped with an audio warning system. Most faults cause the warning horn circuit to activate. How the warning horn activates depends on the severity of the problem.
Severe IMPORTANT: If you experience a severe fault, contact your authorized Mercury MerCruiser dealer. If a severe fault is detected, the audio warning system will sound for six seconds, turn off for six seconds, then sound for six more seconds. Guardian restores engine power to normal. To avoid recurrence of the problem, contact an authorized Mercury MerCruiser dealer. As another example, Transmission Guardian is a MerCruiser DTS feature that protects transmissions from clutch damage. Transmission Guardian monitors the clutch pack pressure in forward and reverse gears.
Section 3 - On the Water Section 3 - On the Water Table of Contents Safe Boating Suggestions.34 Passenger Safety in Pontoon Boats and Deck Boats Be Alert to Carbon Monoxide Poisoning. 35.39 Good Ventilation.
35 Boats Having An Open Front Deck. Most boats are rated and certified for maximum load (weight) capacities (refer to your boat capacity plate). Know your boat's operating and loading limitations. Know if your boat will float if full of water. When in doubt, contact your authorized Mercury MerCruiser dealer or the boat manufacturer. Section 3 - On the Water. Do not allow anyone to sit or ride on any part of the boat that was not intended for such use.
This includes the backs of seats, gunwales, transom, bow, decks, raised fishing seats and any rotating fishing seat. Section 3 - On the Water 1. Example of desired air flow through the boat.
Mc79553-1 Poor Ventilation Under certain conditions, permanently enclosed or canvas enclosed cabins or cockpits with insufficient ventilation may draw in carbon monoxide. Install one or more carbon monoxide detectors in your boat.
Section 3 - On the Water Operation Chart WHILE BEFORE STARTING AFTER STARTING AFTER STOPPING UNDERWAY Check shift and Turn battery switch on. Throttle control Close fuel shut off valve. Check steering Close seacock, if Operate bilge blowers. Components on your engine will be damaged if submerged. Damage caused by submersion is not covered by the Mercury MerCruiser Limited Warranty.
Section 3 - On the Water Protecting People in the Water While You Are Cruising It is very difficult for a person in the water to take quick action to avoid a boat heading in their direction, even at slow speeds. 21604 Always slow down and exercise extreme caution any time you are boating in an area where there might be people in the water. Section 3 - On the Water Persons on the front deck could easily be thrown overboard or persons dangling their feet over the front edge could get their legs caught by a wave and pulled into the water. Mc79555-1 WARNING Sitting or standing in an area of the boat not designed for passengers at speeds above idle can cause serious injury or death. After striking a submerged object, stop the engine as soon as possible and inspect the drive system for any broken or loose parts.
If damage is present or suspected, the power package should be taken to an authorized Mercury MerCruiser dealer for a thorough inspection and necessary repair. Section 3 - On the Water Drive Unit Impact Protection The power trim hydraulic system is designed to provide impact protection for the sterndrive unit.
If a submerged object is struck while the boat is moving forward, the hydraulic system will cushion the kickup of the sterndrive unit as it clears the object, reducing damage to the unit. Section 3 - On the Water. Drive unit trimmed out too far. A missing propeller diffuser ring. A damaged propeller or gear housing, which allows exhaust gases to escape between propeller and gear housing.
Drive unit installed too high on transom. Elevation and Climate Elevation and climate changes will affect the performance of your power package. Change the engine oil and oil filter. Refer to Maintenance. End of First Season Checkup At the end of the first season of operation, contact an authorized Mercury MerCruiser dealer to discuss and/or perform scheduled maintenance items.
If you are in an area where the product is operated continuously, year‑round, you should contact your dealer at the end of. Section 4 - Specifications Section 4 - Specifications Table of Contents Fuel Requirements.46 Engine Oil.47 Fuel Ratings.46 Engine Specifications. 48 Using Reformulated (Oxygenated) Gasoline Fluid Specifications.48 (USA Only). 46 Sterndrives. 48 Gasoline Containing Alcohol.46 Engine. Reformulated gasoline is required in certain areas of the USA and are acceptable for use in your Mercury MerCruiser engine.
The two types of oxygenates used in these fuels are alcohol (ethanol) and ether (MTBE or ETBE). If ethanol is the oxygenate that is used in the gasoline in your area, refer to Gasoline Containing Alcohol. IMPORTANT: Lubrication requirements for catalyzed engines differ from the requirements for non‑catalyzed engines. Some marine‑grade lubricants contain high levels of phosphorus, which can damage the catalyst system on MerCruiser engines. Although these high‑phosphorus lubricants may allow acceptable engine performance, exposure over time will damage the catalyst.
IMPORTANT: All capacities are approximate fluid measures. 3.0 MPI Capacity Fluid Type Mercury Full‑Synthetic MerCruiser 20W‑40, NMMA FC‑W rated Engine oil (with filter) 3.8 L (4 US qt) oil. Seawater cooling system 9 L (8.5 US qt) Propylene glycol and purified water. Section 5 - Maintenance Section 5 - Maintenance Table of Contents Owner/Operator Responsibilities.50 Changing.63 Dealer Responsibilities.50 Cleaning the IAC Muffler.64 Maintenance.50 Changing the Water-Separating Fuel Filter.65 Do-It-Yourself Maintenance Suggestions. 51 Inspecting the Fuel Pump Sight Tube.66 Inspection. Ensure that the boat is properly equipped.
Prior to delivery, make certain that the Mercury MerCruiser power package and other equipment are in proper operating condition. Make all necessary adjustments for maximum efficiency. Transmission (inboard models only) Do‑It‑Yourself Maintenance Suggestions Present day marine equipment, such as your Mercury MerCruiser power package, are highly technical pieces of machinery.
Electronic ignition and special fuel delivery systems provide greater fuel economies, but also are more complex for the untrained mechanic. Section 5 - Maintenance Maintenance Schedule—Sterndrive Models Routine Maintenance NOTE: Only perform maintenance that applies to your particular power package. Task Interval Maintenance to Be Performed. Check the engine oil level.
(You can extend this interval based on experience with the product.). Clean the flame arrestor, IAC muffler (MPI engines), and the crankcase ventilation hoses. Inspect the PCV valve, if equipped. NOTE: On MerCruiser V6 models, the PCV valve is a non‑serviceable, internal component of the valve cover assembly. Inspect the condition and the tension of the belts. Section 5 - Maintenance Date Maintenance Performed Engine Hours Engine Oil Checking and Filling NOTICE Discharge of oil, coolant, or other engine/drive fluids into the environment is restricted by law. Use caution not to spill oil, coolant, or other fluids into the environment when using or servicing your boat.
Capacity Fluid Type 3.0 MPI 3.8 L (4 US qt) Mercury Full‑Synthetic MerCruiser Oil 20W‑40 5. Replace the fill cap.
Changing Oil and Filter See Maintenance Schedule for the change interval. Engine oil should be changed before placing the boat in storage. Section 5 - Maintenance 4. Pull tether through the bilge drain. 7284 Bilge drain plug Oil drain hose plug Tether Oil drain hose Clip Bilge drain flange 5. Place the oil drain hose in a suitable container.
Remove the drain plug from the oil drain hose. Cold full mark Warm full mark 3. Add the specified fluid if required. Refer to Filling. IMPORTANT: If fluid is not visible in pump, contact your authorized Mercury MerCruiser dealer. Remove the fill cap and dipstick and observe the fluid level.
The coolant level in the thermostat housing should be at the bottom of the filler neck. If the coolant level is low, contact your authorized Mercury MerCruiser dealer. Check the antifreeze concentration for adequate freeze protection and correct if necessary.
Section 5 - Maintenance 5. With the engine at normal operating temperature, check that the coolant level in the coolant recovery bottle is between the 'ADD' and 'FULL' marks. Add the specified fluid as necessary. Description Where Used Part No. If any water is visible at the bottom of the monitor or appears at the oil fill/drain plug and/or if oil appears discolored, contact your authorized Mercury MerCruiser dealer immediately. Both conditions may indicate a water leak somewhere in the sterndrive unit.
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IMPORTANT: If any water drained from the oil fill/drain hole, or if the oil appears milky, the sterndrive unit is leaking and should be checked immediately by your authorized Mercury MerCruiser dealer. Lower the sterndrive unit so that the propeller shaft is level. Fill the sterndrive unit, through the oil fill/drain hole, with specified gear lubricant until an air‑free stream of. Power Trim and Steering Fluid Power trim pump 92-858074K01 3. Install the cap.
Changing Power trim fluid does not require changing unless it becomes contaminated with water or debris. Contact your authorized Mercury MerCruiser dealer. Page 83272 MARCH 2008. Positive Crankcase Ventilation Valve (PCV) CHANGING IMPORTANT: You cannot clean the PCV valve. Replace the PCV valve if it is defective or sticking.
To ensure compliance with emission regulations, use only Mercury MerCruiser replacement parts. Remove the engine information plate. Section 5 - Maintenance 2. Remove the PCV valve. 32608 PCV valve Crankcase ventilation hose return fitting 3. If inspecting the valve with the engine stopped: Disconnect the PCV valve from the hose.
Shake the PCV valve. If you hear a metallic rattle, the valve is functional. If you do not hear the rattle, replace the valve. Section 5 - Maintenance 2.
Remove the IAC muffler from the slot in the air valve plate using needle‑nosed pliers. 32180 IAC muffler location 3. Inspect the muffler for holes, cracks, or deterioration. Replace if damaged. IMPORTANT: Do not use a cleaner tains methyl ethyl ketone and do not use cleaner on electrical connections.
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Inspecting the Fuel Pump Sight Tube The engine fuel pump sight tube gives you visual evidence of a fuel leak. If fuel is ever visible in the tube, see your authorized Mercury MerCruiser dealer to replace the fuel pump. Section 5 - Maintenance Lubrication Steering System WARNING Incorrect cable lubrication can cause hydraulic lock, leading to serious injury or death from loss of boat control. Completely retract the end of the steering cable before applying lubricant. NOTE: If steering cable does not have grease fitting, inner wire of cable cannot be greased. Lubricate the steering pin. Mc71904-1 Steering pin Tube Ref.
Description Where Used Part No. Synthetic Blend MerCruiser Engine Steering pin 92‑883725K01 Oil SAE25W‑40 4. On dual engine boats: Lubricate the tie bar pivot points. Description Where Used Part No.
Lubricate the pivot points and the guide contact surfaces. Mc79736 Pivot points Guide contact surfaces Tube Ref. Description Where Used Part No. Synthetic Blend MerCruiser Engine Shift cable pivot points & guide 92‑883725K01 Oil SAE25W‑40 contact surfaces 72 MARCH 2008 Page 69. Section 5 - Maintenance Sterndrive Unit and Transom Assembly 1.
Lubricate gimbal bearing by applying approximately 8‑10 pumps of grease from a typical hand‑operated grease gun. Mc77068-1 Gimbal bearing grease fitting Tube Ref No. Description Where Used Part No. U-joint and Gimbal Bearing Gimbal bearing 92-802870A1 Grease.
Section 5 - Maintenance NOTE: If the boat is operated at idle for prolonged periods of time, coupler should be lubricated in the Alpha Models ‑ every 150 hours. 6213 Alpha drive coupler Engine coupler grease fitting Tube Ref No. Description Where Used Part No. Section 5 - Maintenance Propellers Propeller Repair Some damaged propellers can be repaired. Contact your authorized Mercury MerCruiser dealer.
Alpha Propeller Removal WARNING Rotating propellers can cause serious injury or death. Never operate the boat out of the water with a propeller installed. Before installing or removing a propeller, place the drive unit in neutral and engage the lanyard stop switch to prevent the engine from starting. Section 5 - Maintenance Tube Ref No. Description Where Used Part No. Anti-Corrosion Grease Propeller shaft 92-802867Q 1 2-4-C Marine Lubricant with Propeller shaft 92-802859A 1 Teflon 2. Slide thrust hub onto propeller shaft, with stepped side toward propeller hub.
Section 5 - Maintenance Replacing Belts on Front Mount Models 32557 Power steering belt Spacer block Alternator belt Crank position sensor Alternator POWER STEERING PUMP DRIVE BELT 1. Loosen power steering pump attaching bolts and mounting bolts. Pivot power steering pump toward engine, as required, until belt can be removed. Your boat comes equipped with through the sterndrive water pickups. See Sterndrive Water Pickups (following) for the flushing procedure. Consult your authorized Mercury MerCruiser dealer for further explanation.
IMPORTANT: Alpha engines with the sterndrive water inlet blocked off at the gimbal. Section 5 - Maintenance Sterndrive Water Pickups This Mercury MerCruiser sterndrive is equipped with side water pickups. Side pickups require the flushing attachment (44357Q 2). 5773 Side Pickup NOTE: Flushing is needed only for salty, brackish, mineral‑laden, or polluted water applications. Section 5 - Maintenance NOTICE Operating the engine out of the water at high speeds creates suction, which can collapse the water supply hose and overheat the engine. Do not operate the engine above 1400 RPM out of the water and without sufficient cooling water supply. Section 5 - Maintenance Corrosion Protection NOTICE Washing the MerCathode assembly can damage components and lead to rapid corrosion.
Do not use any cleaning equipment such as brushes or high‑pressure washers to clean the MerCathode assembly. 6211 MerCathode reference electrode Do not pressure wash Do not paint Whenever two or more dissimilar metals (like those found on the sterndrive) are submerged. Section 5 - Maintenance Mercury MerCruiser power packages are equipped with anodes to help protect them from galvanic corrosion under moderate conditions. However, for severe conditions (i.e. When using a stainless steel propeller, docking/mooring in areas with rapid water flow, etc.), it is recommended that a Quicksilver Anti‑Corrosion Anode Kit and/or a MerCathode System.
MerCathode System ‑ Electrode assembly replaces Anodic block. System should be tested to ensure adequate output. The test should be performed where boat is moored, using Quicksilver Reference Electrode and Test Meter.
Contact your authorized Mercury MerCruiser dealer. Page 83272 MARCH 2008. Section 5 - Maintenance IMPORTANT: To ensure that the MerCathode reference electrode is not damaged, do not paint or pressure wash. 6206 MerCathode controller MerCathode assembly Anode Kit (if equipped) ‑ Mounted to the boat transom. 5642 Trim Cylinder Anodes ‑ Mounted on each trim cylinder.
7460 Trim cylinder anodes 72 MARCH 2008. Section 5 - Maintenance Bearing Carrier Anode (Alpha) ‑ Located in front of the propeller, between the front side of the propeller and the gear housing. 7461 Bearing carrier anode Screws In addition to the corrosion protection devices, the following steps should be taken to inhibit corrosion: 1. Section 5 - Maintenance. Avoid any electrical interconnection between the Mercury MerCruiser Product, Anodic Blocks, or MerCathode System and the paint by allowing a minimum of 40 mm (1‑1/2 in.) unpainted area on transom of the boat around these items.
Section 5 - Maintenance Notes: Page 83272 MARCH 2008. Section 6 - Storage Section 6 - Storage Table of Contents Cold Weather or Extended Storage.86 Clearing Clogged Blue Drain Hoses.92 Preparing Power Package for Storage.86 Draining the Sterndrive.94 Engine and Fuel System Preparation.87 Battery Storage. 95 Draining the Seawater System. Section 6 - Storage Cold Weather or Extended Storage IMPORTANT: Mercury MerCruiser strongly recommends that this service should be performed by an authorized Mercury MerCruiser dealer. Damage caused by freezing temperatures IS NOT covered by the Mercury MerCruiser Limited Warranty. NOTICE Water trapped in the seawater section of the cooling system can cause corrosion or freeze damage.
Section 6 - Storage 10. For additional assurance against freezing and rust, after draining, fill the seawater cooling system with propylene glycol mixed to the manufacturer's recommendation to protect engine to the lowest temperature to which it will be exposed during freezing temperatures or extended storage. Section 6 - Storage Draining the Seawater System CAUTION Water can enter the bilge when the drain system is open, damaging the engine or causing the boat to sink.
Remove the boat from the water or close the seacock, disconnect and plug the seawater inlet hose, and ensure the bilge pump is operational before draining. Section 6 - Storage 3. Push the quick connect fitting release buttons and remove the blue drain hoses from the bracket.
32559 Release button (to engine block) Blue drain hoses T‑handle Hose guide Release button (to exhaust manifold) 4. Pull the T‑handle until the hose guide is in contact with the quick connect fittings. Section 6 - Storage 1.
If draining with the boat in the water, close the seacock (if equipped) or remove and plug the water inlet hose. If draining with the boat out of the water, place the boat on a level surface to ensure complete draining of the system.
Section 6 - Storage 4. Remove and lower the hose connecting the water inlet to the power steering cooler, or the water inlet to the heat exchanger. 32651 Power steering cooler Water inlet to heat exchanger hose 72 MARCH 2008 Page 91. Section 6 - Storage 5. Ensure that the speedometer pitot hole, gear housing water vent and drain holes, and trim tab cavity vent and drain holes are open and unobstructed.
7329 Gear housing vent holes Gear housing drain hole Trim tab cavity drain holes Speedometer pitot hole 6. Section 6 - Storage 3. Ensure the clogged blue drain hose is in the correct position below its connection point on the block. Turn on the bilge pump and supply water to the water inlets. If the boat is out of the water, install the flushing attachment and open the water source fully to provide maximum water flow. The unit will need to be serviced by an authorized Mercury MerCruiser dealer. Pull the T‑handle until the quick connect fittings on the blue drain hoses are within reach.
Section 6 - Storage Battery Storage Whenever the battery will be stored for an extended period of time, be sure the cells are full of water and the battery is fully charged and in good operating condition. It should be clean and free of leaks. Section 6 - Storage Notes: Page 83272 MARCH 2008. Section 7 - Troubleshooting Section 7 - Troubleshooting Table of Contents Diagnosing EFI Problems.98 Battery Will Not Recharge.100 Engine Guardian System.98 Remote Control Is Difficult to Move, Has Troubleshooting Charts.98 Excessive Play, or Makes Unusual Sounds Starter Motor Will Not Crank Engine, or Cranks.100 Slowly.98 Steering Wheel Jerks or Is Difficult to Turn. Section 7 - Troubleshooting Diagnosing EFI Problems Your authorized Mercury MerCruiser dealer has the proper service tools for diagnosing problems on Electronic Fuel Injection (EFI) Systems. The Electronic Control Module (ECM) on these engines has the ability to detect some problems with the system when they occur, and store a Trouble Code in the ECM's memory. Boat bottom fouled or damaged.
Clean or repair as necessary. Ignition problem. See Engine Runs Rough, Misses or Backfires. Engine overheating. See Excessive Engine Temperature. Have EFI System checked by an authorized Mercury MerCruiser EFI System fault dealer.
Excessive Engine Temperature Possible Cause Remedy Water inlet or seacock closed. Loose or missing shift and throttle linkages. See authorized Mercury MerCruiser dealer immediately.
Straighten cable or have authorized Mercury Shift or throttle cable kinked. MerCruiser dealer replace cable if damaged beyond repair. Steering Wheel Jerks or Is Difficult to Turn Possible Cause Remedy Low power steering pump fluid level. Section 7 - Troubleshooting Possible Cause Remedy Check all associated electrical connections and wires Loose or dirty electrical connections or damaged (especially battery cables). Clean and tighten faulty wiring.
Repair or replace wiring. Power Trim Does Not Operate (Motor Operates but Sterndrive Unit Does Not Move) Possible Cause Remedy Trim pump oil level low.
Section 7 - Troubleshooting Notes: Page 183272 MARCH 2008. Section 8 - Customer Assistance Information Section 8 - Customer Assistance Information Table of Contents Owner Service Assistance.
104 Parts and Accessories Inquiries. 105 Local Repair Service.104 Resolving a Problem.105 Service Away From Home.104 Mercury Marine Service Offices. Owner Service Assistance Local Repair Service If you need service for your Mercury MerCruiser–powered boat, take it to your authorized dealer.
Only authorized dealers specialize in Mercury MerCruiser products and have factory‑trained mechanics, special tools and equipment, and genuine Quicksilver parts and accessories to properly service your engine. Resolving a Problem Satisfaction with your Mercury MerCruiser product is very important to your dealer and to us. If you ever have a problem, question or concern about your power package, contact your dealer or any authorized Mercury MerCruiser dealership. Year built United States and Canada For information on additional literature that is available for your particular Mercury MerCruiser power package and how to order that literature contact your nearest dealer or contact Mercury Marine Publications P.O.