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    Mercury 3L/4 Stroke/Verado Moderator EuropeanAM's Avatar
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    Exclamation FAQ - COMMONLY ASKED/USED POSTS (Look here first): Updated 11/2023

    GENERAL PRODUCT INFO AND MAINTENANCE:

    Optimax Engine Break-In


    HOW TO FIND YOUR SERIAL NUMBER

    FUEL LINES AND PERFORMANCE PROBLEMS

    INFO: Select Optimax Engines Serial Number 1B976519-2B012682


    Optimax Engine Changes, 1/2013 and later

    Gen-2 Torquemaster (aka: Wingmaster) Setup Suggestions

    SUCCESSFUL Gen-2 Torquemaster Setups

    FUEL LINES AND PERFORMANCE PROBLEMS


    "BATTERIES THAT MEET THE REQUIREMENTS" - NEW AND IMPROVED LIST 7/20!

    TORQUE SPECS

    Heavy-Duty Racing Hub Kit Installation (solid or SSR for 1.25" Propshaft)

    Warranty Information/Guide for Consumers


    PM-1 Experiences and Warranty Poll


    ProXS Engines: OIL RECOMMENDATION CHANGE


    200 ProXS Model Changes- February, 2012

    Oil, Battery, Spark Plugs, Fuel and Fuel Additive Recommendations

    OIL IDENTIFICATION by Part Numbers

    Importance of Proper Spark Plug Gap


    DON'T use Aftermarket Spark Plugs in your Opti!

    Recommended Annual Maintenance or Winterization for Optimax Engines

    Compressor STRAINER Cleaning

    How do I change the gear lube on my 3L Gearcase- can't find drain plug


    Bleeding air from the Engine Mounted Oil Tank


    Proper Warmup and Cold Water Operation


    Engine Shutdown Precautions after a HARD RUN (Especially in cold water)


    Thermostat removal/replacement for Optimax Engines


    Compression Testing

    "Water Pressure 101"- Poppet Valves and Variables with Water Pressure

    1.5L (75-125hp 3 cyl) Optimax Water Pump Replacement

    3 Liter Water Pump Replacement (Sherm's Tips)


    Red-Capped Water Separating Filter Removal and Replacement


    Torquemaster VS. Verado Gearcase Identification

    Mercury Marine Engine Products


    4-Shutter Intake Idle Speed Adjustment

    Striker Plates- Performance

    Striker Plate Replacement Information

    WARNING HORN "BEEPED"



    FUEL AND ETHANOL TOPICS:


    Mercury OFFERS- INEXPENSIVE FUEL "ETHANOL CONTENT TESTER"


    What Ethanol does to your engine... fuel lines & system
    !


    Mercury's View of Ethanol Fuel (Original Article)


    MERCURY Fuel System Care Products- Know the FACTS, avoid the MYTHS

    Ethanol Free Gas Stations List (US)


    Fuel Rail and Direct Injector Removal



    SMARTCRAFT INSTALLATION AND MERCMONITOR:


    MercMonitor Versions and Information

    Mercury VesselView Link Module

    Mercury VesselView Mobile


    MercMonitor Installation: (Currently looking for documented install)

    NMEA-2000 Stand-Alone Gateway "stick"


    NMEA-0183 Connection Information with Diaghram

    NMEA-2000 Gateway Connections (L1 or Higher MercMonitor- or Gateway Stick)

    LIVEWELL TEMP MOD

    DIGITAL TRIM SENSOR INSTALLATION

    How to Disassemble A Smartcraft Cable Connector


    Simple NMEA-2K Network Layout

    Vesselview Mobile Connection Problems? Try this...

    Vesselview Mobile Module doesn't connect: LOCATION SERVICES OFF?

    Vessel View LINK communication problems with Lowrance?


    V6 Optimax Digital to Analog Trim Converter



    GEAR RATIO:


    Determining your Gearcase "Gear Ratio"- Without removing Gearcase



    Mods and Such:

    Gen-1 ONLY Torque Master Lower Unit Blockoff Plug Install W/Pics


    3L O-ringed Cylinder Head Cutting/CC Service @ JSRE

    3 Liter Cowl Mods

    OK... Let's talk about XB Mods


    Rigging Flange Kit for earlier 3L and ProXB Models (unlisted flange)

    3L Optimax/EFI/XS/ProXS Rattling?


    Poor Performance- 3L EFI or Optimax, PLUGGED EXHAUST TUNER


    300X (Downdraft Intake Style) TPS Bracket Mod


    300X Throttle Plate Setting


    225 EFI, 250 EFI, 300 ProMax Throttle Plate Airgap

    Adding an
    LED Warning Light to Warning Horn Circuit


    REED CAGE LAPPING

    HIGH SPEED SCOOP KIT INSTALLATION

    Cowling Sound Blanket - Sound Dampening

    DUAL TEMP SENDERS TO MONITOR INDIVIDUAL CYLINDER HEAD TEMPS



    COMMON QUESTIONS/ITEMS:


    Hotfoot Adjustment/Setup

    Push-to-Enrich Start Modification (Laser-Style EFI engines)

    Common Wire Colors (Mercury)


    SILVER Torquemaster Paint


    Hydraulic Steering Bleeding/Purging or Installation Instructions


    EFI Pressure Regulator/Final Filter

    Trim Rod Endcap Removal Tool


    Alternative Oils?


    2.5L Poppet Valve Kit

    Checkout Recommendations for a Used Engine


    Contacting
    Don
    for Technical Support



    Should you see something that you feel should be on this list (or note an error), please send me a PM.



    Last edited by EuropeanAM; 04-27-2023 at 09:36 AM. Reason: Updates


    Dual Mercury Master Technician- for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC.
    Still consider myself a "Marine Apprentice" after 47 years (learn something new every day).
    Mercury Parts, Mercury Outboards, Smartcraft & Accessories, Injector Service, TDR Reeds- BBC Sponsor

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