Yamaha F4 Owner's Manual

Also see for F4: Owner's manual Owner's manual Brochure & specs Service manual Owner's manual

Contents

Maintenance53EMU37081Periodic maintenanceWARNINGEWM01981These procedures require mechanicalskills, tools, and supplies. If you do nothave the proper skills, tools, or supplies toperform a maintenance procedure, have aYamaha dealer or other qualified mechan-ic do the work.The procedures involve disassemblingthe motor and exposing dangerous parts.To reduce the risk of injury from moving,hot, or electrical parts: Turn off the engine and keep engineshut-off cord (lanyard) with you whenyou perform maintenance unless other-wise specified. Allow the engine to cool before handlinghot parts or fluids. Always completely reassemble the mo-tor before operation.Maintenance, replacement, or repair of theemission control devices and systemsmay be performed by any marine enginerepair establishment or individual. All war-ranty repairs, however, including those tothe emission control system, must be per-formed by an authorized Yamaha marinedealership.A service manual is available for purchasethrough your Yamaha dealer for owners whohave the mechanical skills, tools, and otherequipment necessary to perform mainte-nance not covered by this owner’s manual.EMU28511Replacement partsIf replacement parts are necessary, use onlygenuine Yamaha parts or parts of equivalentdesign and quality. Any part of inferior qualitymay malfunction, and the resulting loss ofcontrol could endanger the operator and pas-sengers. Yamaha genuine parts and acces-sories are available from your Yamahadealer.EMU35520Maintenance interval guidelinesThe service intervals provided in the Mainte-nance Chart were developed based upon“typical” use that includes operating at variedspeeds, with sufficient time for engine warmup and cool-down, a medium to light load, andan average cruising speed near the 3000 to4000 rpm range. As with any engine, howev-er, if your normal operating conditions are dif-ferent, you should consider service moreoften than shown, especially how often youchange your engine and gear oil. Examplesmight include extended wide-open-throttleuse or long periods of trolling or idling, carry-ing heavy loads, or frequent starting and stop-ping or shifting. More frequent maintenancewill often pay off many times over in increasedengine life and greater owner satisfaction.Consult your Yamaha dealer for additionalmaintenance recommendations.