Mercruiser Service Bulletins Bulletins are listed by the date and sequence of when they were written. You will need Adobe Acrobat to read the PDF files. 1988 Mercruiser Service Bulletins Torquing Bravo One U-Joint Piston Knock in MCM 224 Replacement starter motor P/N 50-12872 for Mer-Cruiser Loose Hinge Pins Bravo Overrich Acceleration Bog on MerCarb Equipped Models MCM 120/140/2.5L/3.0L Possible Water Leak in Transom Assembly Diesel Bravo Two/lnboard Engine Packages Power Trim Control P/N 55642A13 Assembled Wrong Alpha One and Bravo One Upper Swivel Shaft Bushing Removal Tools a Tilt Steering Wheel Mount MerCruiser 215E Shift Required Spark Plug Wire Laser II Propeller Vent Plug Possible Water Leak Caused by TR/TRS Transom Cutout MerCarb Flooding / Hurth Transmission Fluid New Distributor Gear / 454 Magnum (365 HP) Rocker arms Alpha One Shift Assist Assembly and Remote Control Shift Cable Adjustment 1989 Mercruiser Service Bulletins 1988/89 MerCruiser/Sea Ray Engine Identification GM Engine Models B.M.W. D190/D150 Models Overheating MerCruiser Diesel Injector & Pump Diagnosis MR and Alpha One Shift Cable Adjustment Use of Proper Anti-Freeze in Diesels Engine Timing Changes MIE 5.7 / 420 & 575 Water Separating Fuel Filter HEI Distributor Shaft Roll Pin Oversized hole Carter Fuel Pump Use on 7.4 / New Prestolite Alternator Hinge Pin Torque Change 120R-MR - 260R-MR and All Alpha Ones Shift Spool Assembly All Digital Distributorless Ignition Wiring Harness Changes All Hurth Transmission Tool List MerCruiser Diesel Service Bosch Diesel Nozzle Tester 1988 vs. 1989 Bravo Drive Unit and Transom Assembly Interchangeability Rattling Sound on MIE 7.4L Paint Blistering on Oyster Installation of Dual Engine Console Mount Commander Remote Controls B.M.W. Stern Drive/Inboards New Heavy Duty Gears in 1.50:1 Alpha One Upper Drive Shaft Housing Assembly Near Net Forged Forward and Pinion Gears in 350 Magnum Alpha One Lower Unit MCM and MIE 7.4L (454 CID) Cylinder Head Bolts Selecting A Propeller For Diesel Bravo Transom Plate Oil Hose Starting Procedure if Gasoline Engine is Shut-Off or Stops with the Bravo Drive Unit in Gear MerCarb Flooding Alpha One Transom Shift Attachment of Gear Lube Monitor Installation of Stop-Start Panel STOP-START PANEL MerCruiser Diesel Service Manuals 4.3LX and 5.7L Choke Rod Solid State DC Voltage Regulators Fuel Recommendations 224 C.I.D. Engine Push Rod Elimination of Water Drain Petcocks Alpha One - Bravo One and Bravo Two Trim Sender Indexing Marks Misaligned Water Ingestion on MerCruiser V6/V8 Stern Drive and Inboard Engines 1990 Mercruiser Service Bulletins USA and Canada Gasoline Merc Carbs Having Incorrect Choke Alpha One Bell Housing Shift Borg Warner Velvet Drive Removal of Upper Swivel Pin Shift Plate Inspection Spark Plug Wire Terminal and Boot Change Rough Idle or Cant Adjust Idle Mixture Screws Diesel Engine Idle RPM Incorrect Engine Maximum RPM on Serial Number Plate Wrong Diameter Water Hose Being Connected Use of Propylene Glycol Antifreeze OIL LEAK AT FRONT OF ENGINE Possible Cause for Engine Overheating Delco EST Ignition System Timing and Maximum RPM Changes REPLACEMENT OF GIMBAL HOUSING STUDS JUST BELOW THE INNER TRANSOM PLATE ENGINE SUPPORTS ON ALPHA ONE GENERATION II TRANSOM ASSEMBLY 31-35988A12 Bearing Set POSSIBLE DIFFICULTY SHIFTING OUT OF GEAR ON BRAVO DRIVE 1.36:1 AND 1.81:1 1991 Mercruiser Service Bulletins NEW BATTERY AND BATTERY CABLE REQUIREMENTS FOR MERCRUISER PRODUCTS ENGINE SPECIFICATION CORRECTIONS IN #9 MANUAL MCM 502 Magnum Specs 815471A3 BRAVO SHIFT CABLE REPLACEMENT KIT SEAWATER/FUEL PUMP MAINTENANCE MCM 7.4L Bravo, MIE 7.4L Specs NEW ENGINE BREAK-IN PROCEDURE FOR DIESEL ENGINES MCM 350 Magnum Alpha, and Bravo Specs OIL LEAKING FROM WATER PICKUP HOLES IN GEAR HOUSING ON ALPHA ONE GENERATION II DRIVE STARTER RELAY CHATTER ON DIESEL ENGINES WARRANTY FRAUD/ Super Chargers PRIMING 4-CYCLE ENGINES WITH OIL REPLACEMENT TRIM PUMP FOR THE PRESTOLITE STYLE PUMP Alpha One Generation II Tool List MCM 454 Magnum Bravo MCM 4.3L, 4.3LX Alpha MERCRUISER INSTRUCTIONAL VIDEO TAPES ANODE MATERIAL CHANGE BRAVO DRIVE UNIT/HOUSING COMPARISON AND IDENTIFICATION DRIVE UNIT GEAR RATIO IDENTIFICATION ALPHA ONE VERSUS ALPHA ONE GENERATION II UPPER DRIVE SHAFT USE OF PRIORITY VALVE KIT FOR DUAL POWER STEERING ON 3.0 L AND 3.0 LX ALPHA ONE/MCI 1990 AND PRIOR, LOWER DRIVE SHAFT NEW OIL SEAL BUSHING FOR BELL HOUSING BRAVO CONE CLUTCH Required Water Separating Fuel Filter Replacement REQUIRED WATER SEPARATING FUEL FILTER REPLACEMENT 1992 Mercruiser Service Bulletins 224 CID (3.7L) PISTON IDENTIFICATION, TYPE AND CLEARANCE TRIM PUMP 110 AMP FUSE BRAVO LOWER GEAR HOUSING PINION NUT NEW TRIM CYLINDER SPANNER WRENCH TOOL 91-821709 REQUIRED WARNING DECAL INSTALLATION SEAWATER/FUEL PUMP HOSE CONNECTIONS ENGINE RPM HUNTS AT IDLE SPEED ENGINE ALIGNMENT TOOL MODIFICATION REQUIRED DISTRIBUTOR CAP GASKET INSTALLATION TESTING THUNDERBOLT IV HEI IGNITION SYSTEM NEW TRIM LIMIT SWITCH AND TRIM SENDER KIT LEAKAGE BETWEEN EXHAUST PIPE AND GIMBAL HOUSING ASSEMBLY MCM 502 Magnum/MIE 8.2L REQUIRED ELECTRIC FUEL PUMP RFI FILTER REPLACEMENT MCM 5.7L Alpha, MIE 5.7L Inboard and 5.7L Competition Ski Engines ADDITIONAL IGNITION SYSTEM ADVANCE CURVE SPECIFICATIONS WEBER CARBURETOR ADJUSTABLE ACCELERATOR PUMP TORSIONAL (CRANKSHAFT) DAMPER BOLT TORQUE CHANGE V6/V8 THERMOSTAT HOUSING CHANGE 1993 Mercruiser Service Bulletin MCM 7.4L Bravo Three GM Generation V Engine A. VAPOR SEPARATOR TANK (VST) RECALL B. ELECTRIC CONTROL MODULE (ECM) RECALL UNIVERSAL JOINT CROSS & BEARING CUP SEAL REQUIRED FLAME ARRESTOR REPLACEMENT REQUIRED FUEL PUMP PUSH ROD REPLACEMENT ADD WATER INLET HOSE CLAMP ALTERNATE GEAR RATIO STERN DRIVE UNITS FOR HIGH ALTITUDE 224 CID (3.7L) MINIMUM OIL PRESSURE NEW REVERSE GEAR 43-824109 AND THRUST SPACER 23-824108 BRAVO SHIMMING PROCEDURE CHANGE FOR THE GEAR CASE BEARING CARRIER REQUIRED STARBOARD ENGINE MOUNT BOLT REPLACEMENT REQUIRED FUEL INLET FITTING REPLACEMENT ON WEBER CARBURETOR ROCHESTER 4 BBL QUADRAJET CARBURETOR EXHAUST BELLOWS FALLING OFF 224 CID (3.7L) EXHAUST ELBOW/RESERVOIR TORQUE AND RETORQUE V6 AND V8 THERMOSTAT HOUSINGS Blackhawk Drive Applications Service/Repair Of Electrical Test Equipment POSSIBLE WATER LEAKAGE PAST TRANSOM MOUNTING STUDS ON ALPHA AND BRAVO TRANSOM ASSEMBLIES. Stern Drive Setback System MERCRUISER EFI TESTER BRAVO THREE BEARING CARRIER OIL SEALS MCM 454 Magnum EFI, MIE 454 EFI Ski GM Gen V 454 Magnum 454 EFI REQUIRED EFI VST FUEL FILTER REPLACEMENT ENGINE CONTROL MODULE (ECM) RECALL DHB Power Steering Valve (806034A1) MCM 350 EFI Magnum INCORRECT ANEROID ADJUSTMENT 1994 Mercruiser Service Bulletins BRAVO TRIM IN LIMIT SPACER KITS THUNDERBOLT V IGNITION SYSTEM A. CYLINDER HEAD BOLT CHANGE B. CYLINDER HEAD TORQUE SEQUENCE CHANGE C. THRU-HULL WATER PICK UP ELIMINATED ON MCM D4.2L GASOLINE RECOMMENDATION FOR ALL MERCRUISER MODELS Drive Unit Trim Tab / New Anodic Plate DHB POWER STEERING CONTROL VALVE STERN DRIVE REAR ENGINE MOUNT BOLT TORQUE REQUIRED FUEL INJECTOR POD AND ECM REPLACEMENT BATTERY REQUIREMENTS FOR MERCRUISER PRODUCTS REQUIRED ENGINE GROUNDING STUD REPLACEMENT SEAWATER HOSE / POWER STEERING LINE INTERFERENCE EFI GASOLINE RECOMMENDATION CHANGES NUMBER 1 and 2 Universal-Joint & Gimbal Bearing Grease WIRING MODIFICATION Diesel Engines REQUIRED ENGINE FUEL FILTER REPLACEMENT BRAVO THREE TRIM IN LIMIT BLOCKS OPERATION AND MAINTENANCE MANUALS FOR BODENSEE EMISSIONS MODELS 1995 Mercruiser Service Bulletins ALPHA ONE GENERATION II UPPER GEARS OILDYNE TRIM PUMP ADAPTOR CONNECTORS MCM 3.0L, LX Starter Motor Bolt Breakage Hino Diesel - Excessive Black Smoke Emission MerCruiser GM Engine Identification OilDyne Trim Pump Trouble Shooting Chart Reformulated Gasoline (USA) Mercruiser Steering Recommendations Diesel Fuel Filters and Fuel Additives MerCruiser MCM D7.3L/270 Diesel Stern Drive Replacement Ignition Advance Curves and Point Setting Engine Compartment Temperature Alpha One Generation II Over Heat Cooling Systems Maintenance MerCruiser MCM D7.3L Diesel Overheat Low Sulfur Diesel Fuels Engine Noise or Noisy Lifters Hino Diesel-Excessive Black Smoke Turbo Charger Waste-Gate Bearing Cup Installation In The Bravo One Bearing Carrier Shrink Wrapping Boats Velvet Drive Distributors Hurth Marine Gear Distributors 1996 Mercruiser Service Bulletins Bravo Transom Assemblies for the 1996-1/2 Model Year Water In Fuel Module (WIF) Warning Light Serpentine Belt Adjustment Quicksilver Digital Diagnostic Terminal (DDT) Troubleshooting Shift Problems Modifying MerCruiser Engines To Increase Performance Or Horsepower Modifying MerCruisers Exhaust System Brass Power Steering Hose Coupling MerCruiser Scan Tool Piston Ring End Gap Hurth Transmissions Changes To The 1997 Operation And Maintenance Manuals Commander 3000 Remote Control Recall Aftercooler Torque Specifications Required ECM Replacement Hurth V-Drive Output Flange Torque 1997 Mercruiser Service Bulletins Torquing Intake Manifold on Gen+ Engines MerCruiser MCM/MIE Inline Diesel Heat Exchanger End Cover Torque Required Flame Arrestor Replacement MCI /Alpha One / Alpha One Generation II Gear Case and Bearing Bore Differences Multiple EFI Engine Battery Precautions MerCruiser GM Engine Identification Bravo Drives and Transoms MerCarb 2 bbl Carburetor Weber 4 bbl Carburetor Alternate Gear Ratio Sterndrive Units for High Altitude AC Spark Plug Replacement Battery and Battery Cable Requirements for MerCruiser D-tronic Diesels Service/Repair Of Electrical Test Equipment Engine Specification Model: 1998 MCM 5.0L Alpha and Bravo. Timing 1998 350 Mag MPI and 7.4L MPI Models Engine Specifications Model: 1998 MCM/MIE D-Tronic D4.2L Engine Dieseling or Running-On 1997 1/2 Shift Changes for Bravo One / Two / Three and BlackHawk Extended Life Coolant (Antifreeze) In Gasoline Engines EFI and MPI Fuel Line Replacement Required ECM Replacement Engine Oil Level - D2.8L D-Tronic MerCruiser Gasoline Engine Oil Recommendation Heat Transfer Compound Fuel Pressure Gauge Kit Gasoline Engine Compression Test 1998 Mercruiser Service Bulletins MCM 3.0L Flame Arrestor Decal Operating a Bravo One Performance Drive with Low Water Inlets in shal-low water Regulator Piston for Velvet Drive Transmissions Electric Fuel Pump Check Valve Sticking USA Gasoline Additive Causing Fuel System Component Problems 7.4L (L29) Exhaust Valve Inspection MerCruiser Lower Unit Shift Shaft Tool New One Piece Oil Seal Carrier for Alpha One Generation II Installation Issues With MCM D7.3L D-Tronics Injection Pump Timing Specifications Required MIE 7.4L MPI (L29) ECM Replacement Gimbal Housing Oil Reservoir Bulkhead Fitting -Material Change Required #1 Injector Replacement 3.0L Engines with Blown Head Gasket Shift Cable Measurements For Transmissions Modification of Tool Kit 91-806563A1 for D-Tronic Diesels Second Station Start/Stop Kit Instruction Sheets 1999 Mercruiser Service Bulletins Delco Starter Motors V6 and V8 305/350 cid Engines with MEFI-3 MEFI-3 Diagnostic Trouble Codes and Audio Warning System Sensor Failures in MEFI-3 Mercury Distributors Used on V6 and V8 305/350 cid Engines Proper Oil Fill Level On Velvet Drive Transmissions Proper Shift Set-up For The Commander 3000 Classic Control When Used With Alpha One Product Gasoline Engine Vapor Locking EFI / MPI Fuel Pumps With Low Pressure New Flushing Procedure for Alpha and Bravo Engines When Using a Flush Attachment on the Sterndrive Exhaust Manifolds, Risers and Exhaust Elbows MCM 3.0L Flame Arrestor Decal Water Drain Plugs Installed Delco Starter Motors 2000 Mercruiser Service Bulletins -Alpha One Delayed Shift Bravo Three / BlackHawk Lower Unit Oil Seal Installation Tool Modification Serpentine Belt Power Steering Pulleys -Stainless Steel Electric Fuel Pumps Commander 3000 Classic Remote Control Decal