Related Manuals for Yamaha 25V
Summarization of Contents
Chapter 1 GENERAL INFORMATION
IDENTIFICATION NUMBERS RECORD
Details on recording outboard motor and key identification numbers for reference.
SAFETY INFORMATION
Essential safety precautions for operating the outboard motor and boat.
FUELING INSTRUCTIONS
Guidelines and warnings for safely fueling the outboard motor with gasoline.
ENGINE OIL
Information on the recommended type of engine oil for the outboard motor.
BATTERY REQUIREMENT
Specifications and cautions for selecting and using a suitable battery.
PROPELLER SELECTION
Guidance on choosing the correct propeller for optimal performance and motor protection.
START-IN-GEAR PROTECTION
Explanation of the safety feature preventing engine start in gear.
Chapter 2 BASIC COMPONENTS
MAIN COMPONENTS
Identification and illustration of the outboard motor's main parts and components.
OPERATIONS OF CONTROLS AND OTHER FUNCTIONS
Details on the function and operation of various controls and features.
FUEL TANK
Details on the function and operation of the portable fuel tank components.
GEAR SHIFT LEVER
Instructions on how to operate the gear shift lever for forward, neutral, and reverse.
TILLER HANDLE
Guidance on using the tiller handle to steer the outboard motor.
ENGINE STOP BUTTON
Information on the function of the engine stop button for immediate shutdown.
ENGINE STOP LANYARD SWITCH
Explanation of the safety lanyard's function to stop the engine if operator is detached.
THROTTLE CONTROL GRIP
Instructions on operating the throttle control grip to adjust engine speed.
CHOKE KNOB
Details on using the choke knob for starting a cold engine.
RECOIL STARTER HANDLE
Instructions on how to use the recoil starter handle to start the engine.
THROTTLE FRICTION KNOB / SCREW
Guidance on adjusting the throttle friction for preferred control resistance.
REMOTE CONTROL
Overview of the remote control lever and its associated electrical switches.
Neutral throttle lever
Instructions on using the neutral throttle lever for engine warm-up.
Main switch
Explanation of the main switch's function for ignition and starting.
Choke switch
Details on the choke switch for starting the engine, linked to the main switch.
Chapter 3 OPERATION
INSTALLATION
Information and procedures related to installing the outboard motor.
FILLING FUEL AND ENGINE OIL
Steps for safely filling the fuel tank and checking engine oil.
PRE-OPERATION CHECKS
Essential checks to perform before starting the engine to ensure safe operation.
BREAKING IN (RUNNING IN) ENGINE
Procedure for the initial running-in period to ensure proper engine wear.
STARTING ENGINE
Step-by-step instructions for starting the outboard motor.
WARMING UP ENGINE
Procedure for warming up the engine before operation to ensure longevity.
SHIFTING
Instructions on changing the gear position between forward, neutral, and reverse.
STOPPING ENGINE
Procedure for safely stopping the outboard motor.
TRIMMING OUTBOARD MOTOR
Explanation of trim angle and its effect on boat performance.
CRUISING IN SHALLOW WATER
Instructions for operating the motor in shallow water conditions.
TILTING UP/DOWN
Procedures for tilting the outboard motor up and down.
CRUISING IN OTHER CONDITIONS
Guidance for operating in salt water and turbid water.
Chapter 4 MAINTENANCE
SPECIFICATION DATA
Technical specifications for the outboard motor models.
TRANSPORTING AND STORING OUTBOARD MOTOR
Guidelines for safely transporting and storing the outboard motor.
PERIODIC MAINTENANCE
Schedule for routine maintenance checks and tasks.
REPLACEMENT PARTS
Guidance on using genuine Yamaha or equivalent replacement parts.
CLEANING AND ADJUSTING SPARK PLUG
Procedure for cleaning, inspecting, and adjusting spark plugs.
CHECKING FUEL SYSTEM
Instructions for inspecting the fuel system for leaks and damage.
CLEANING FUEL FILTER
Steps for cleaning the fuel filter assembly.
ADJUSTING IDLING SPEED
Procedure for adjusting the engine's idling speed to specification.
REPLACING FUSE
Instructions for replacing blown fuses in electric start models.
GREASING
Guidance on lubricating various parts of the outboard motor.
CHECKING PROPELLER
Procedure for inspecting and maintaining the propeller.
CHANGING GEAR OIL
Procedure for changing the gear oil in the lower unit.
CLEANING FUEL TANK
Instructions for cleaning the fuel tank.
INSPECTING AND REPLACING ANODE
Procedure for inspecting and replacing the sacrificial anode.
CHECKING BATTERY
Guidance on checking and maintaining the battery.
CHECKING WIRING AND CONNECTORS
Checks for secure grounding wires and connectors.
EXHAUST LEAKAGE
Procedure to check for exhaust leaks from engine joints.
WATER LEAKAGE
Procedure to check for water leaks from engine joints.
CHECKING BOLTS AND NUTS
Checks for proper tightening of engine mounting bolts and nuts.
MOTOR EXTERIOR
Instructions for cleaning the outboard motor's exterior and cooling system.
COATING THE BOAT BOTTOM
Guidance on applying anti-fouling paint to the boat hull.
Chapter 5 TROUBLE RECOVERY
TROUBLESHOOTING
Guide to identifying and resolving common engine problems.
TEMPORARY ACTION IN EMERGENCY
Immediate actions to take in case of emergencies like impact or submersion.
STARTER WILL NOT OPERATE
Procedure for starting the engine using an emergency starter rope.
TREATMENT OF SUBMERGED MOTOR
Procedure for immediate care of a submerged outboard motor.
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