Scheduled Maintenance Touch-up paint the power package and spray with corrosion guard. Inspect the condition and the tension of the belts. Check the electrical system for loose, damaged or corroded fasteners. This plug shows that the plug heat range is compatible with the engine, and the engine is electrically and mechanically in good running condition. Mercruiser stern drive engine factory service manual 4 mcm 120 260 on cd 1978 1982 includes i drive models fully bookmarked and searchable for easy navigation you can print any or all pages. Clean, inspect and test the pressure cap. Noise will stop as soon as engine is turned off.
In consideration of these factors, Mercury MerCruiser has adjusted some maintenance intervals and the corresponding tasks to be performed. Check the ignition coil operation. With proper plug servicing clean, file and regap , this plug can be reinstalled with good results. All models for the above stated years and all engine types are included. Mercury Mercruiser Bravo One,Two,Three + Transom Service Manual Service Manual Application: Bravo One, Bravo One X, Bravo One X Diesel, Serial Number 0M198373 and Above. If the problem persists, contact the manufacturer regarding the correct power package.
Check the distributor cap for cracks or marks. Inspect the drive unit anodes and replace if 50 percent eroded. If the problem persists, drain the fuel tank and refill. This manual is an easy layout format that covers all repair procedures in great detail. Improper repair may result in injury to the mechanic and may render the engine unsafe for the boat operator and passengers. Crankcase Oil To help obtain optimum engine performance and to provide maximum protection, we strongly recommend the use of Quicksilver 4-Cycle 25W-40 Marine Engine Oil. Download Manuals mercruiser sterndrive mcm 165 power steering tube problems wiring diagram for trim 120 and 140 and engine workshop manual 1972 mercruiser sterndrive troubleshooting guide 1980 470 service manual 1983 mercuisre outdrive repair 1984 sea ray omc sterndrive repair manual 1987 mercruiser bravo sterndrive service and maintenance 1987 omc 3.
Check the seawater strainer and clean. Check the continuity circuit for loose or damaged connections. Test the MerCathode unit output on Bravo Models. All models for the above stated years and all engine types are included. The chart below is a guide to crankcase oil selection. When the old plugs are replaced, replace the entire set. Reinstall the water pickup or the through the hull fittings in the proper locations.
Open the electrode gap wide enough to permit cleaning and filing. This manual is an easy layout format that covers all repair procedures in great detail. Inspect both systems for damage or leaks. Maintenance Intervals Maintenance intervals and the corresponding tasks to be performed, as shown in this current schedule or as found in a previously printed schedule, are generally based on an average boating application and environment. Change the crankcase oil and filter. Check the steering system and the remote control for loose, missing or damaged parts.
You Can Fix It Today! Service, repairs, maintenance, overhauls, specs, lower units, powerheads, ignition and ful systems, controls and more. Full throttle engine rpm too high 1. Operating in Saltwater Only: treat the engine surface with corrosion guard. Some Standard Bravo Transom Assemblies could have been converted to High Performance Transom Assemblies by use of a High Performance Gimbal Ring Kit 822374A2. Check the water inlets for debris or marine growth. Related: Manual Service Manual Application: MerCruiser 11 Bravo Sterndrives, Bravo One Sterndrive Unit Serial B664190 and Above Bravo Two Sterndrive Unit Serial 15.
Engine will not crank over. If too high, find cause and correct. Use compressed air to remove abrasives. Refer to Transom Assembly sections of this manual for identification information. Remove filings with compressed air. This oil is a special blend of 25-weight and 40-weight oils for marine engines.
Remove any oil deposits with solvent and dry plugs thoroughly. Bravo Two, Bravo Two X, Bravo Two X Diesel, Bravo Three, Bravo Three X, Bravo Three X Diesel Serial Number 0M198373 and Above. Lubricate the gimbal bearing and the engine coupler. Low top speed or lack of power 2. You Can Fix It Today! This manual is an easy layout format that covers all repair procedures in great detail. Normal Condition Few deposits are present and probably will be light tan or gray in color.
Check the drive unit oil level, the trim pump oil level and the power steering pump fluid level. Reinstall the drive unit in the proper position. Routine Maintenance Check the crankcase oil interval can be extended based on experience. Such fouled plugs may be serviced clean, file and regap and reinstalled. Mercury mercruiser 4 mcm 120 260 workshop repair manual is a professional book in which you can get a better understanding of mercury mercruiser 4 mcm https wwwtradebitcoms service manual contains comprehensive instructions and procedures of high quality on how to fix the problems in your car which can save you a lot of time and help you to decide the best with ease. Replace the throttle body if necessary.