Yamaha F50F Owner's Manual

Also see for F50F: Owner's manual Service manual Owner's manual Owner's manual Service manual

Contents

Maintenance66EMU2847BPeriodic maintenanceWARNINGEWM01871These procedures require mechanicalskills, tools, and supplies. If you do nothave the proper skills, tools, or suppliesto perform a maintenance procedure,have a Yamaha dealer or other qualifiedmechanic 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 the key(s)and engine shut-off cord (lanyard) withyou when you perform maintenanceunless otherwise specified.● The power trim and tilt switches oper-ate even when the ignition key is off.Keep people away from the switcheswhenever working around the motor.When the motor is tilted, keep awayfrom the area under it or between it andthe clamp bracket. Be sure no one is inthis area before operating the powertrim and tilt mechanism.● Allow the engine to cool before han-dling hot parts or fluids.● Always completely reassemble the mo-tor before operation.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 andpassengers. Yamaha genuine parts and ac-cessories are available from your Yamahadealer.EMU34150Severe operating conditionsSevere operating conditions involve one ormore of the following types of operation on aregular basis:● Operating continuously at or near maxi-mum engine speed (rpm) for many hours● Operating continuously at a low enginespeed (rpm) for many hours● Brief periods of rapid acceleration and de-celeration followed by engine shut off be-fore the engine has reached properoperating temperature● Frequent quick acceleration and decelera-tion● Frequent shifting● Frequently starting and stopping the en-gine(s)● Operation that fluctuates often betweenlight and heavy cargo loadsOutboard motors operating under any ofthese above conditions require more fre-quent maintenance. Yamaha recommendsthat you do this service twice as often asspecified in the maintenance chart. For ex-ample, if a particular service should be doneat 50 hours, do it instead at 25 hours. Thiswill help prevent more rapid deterioration ofengine components.