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General| Engine Type | 4-Stroke, SOHC |
|---|---|
| Prop Shaft Horsepower | 9.9 hp |
| Full Throttle RPM Range | 5000 - 6000 rpm |
| Fuel Induction System | Carburetor |
| Lubrication | Wet Sump |
| Gear Ratio | 2.08:1 |
| Exhaust | Through Propeller |
| Displacement | 212 cc |
| Max Output | 9.9 hp |
| Starting System | Manual or Electric |
| Cooling System | Water-cooled |
| Recommended Fuel | Regular unleaded gasoline (min 87 octane) |
| Fuel Tank Capacity | 12 L |
| Alternator Output | 6 Amp |
| Gear Shift | F-N-R |
| Shaft Length | 15 in / 20 in |
| Steering | Tiller |
| Trim Method | Manual tilt |
Message welcoming the user and explaining the manual's function and support.
Explains the meaning of Warning, Caution, and Note symbols for user safety.
Details which models the manual's explanations and illustrations are based on.
Locating and recording outboard motor serial and key numbers for reference.
Details on emission control regulations and labels for North American models.
Explanation of California Air Resources Board (CARB) star labels for emissions.
Instructions to read the owner's manual and all labels before operation or work.
Information on warning labels and how to obtain replacements if damaged or missing.
Explanation of various symbols used in the manual, including caution, hazards, and directions.
Essential safety measures for operating the outboard motor, including rotating parts, hot parts, and electrical hazards.
Key warnings for power tilt, engine shut-off cord, and safe gasoline handling.
Safety guidelines on carbon monoxide, modifications, alcohol, PFDs, and passenger safety.
Precautions for overloading, collision avoidance, and safe operation practices.
Information on weather, accident reporting, training, and legal compliance.
Essential navigational rules for operating a boat and interacting with other vessels.
Rules for navigating when meeting, crossing paths, or overtaking other vessels.
Rules for fishing/sailing vessels and understanding navigational buoys.
Explanation of the buoyage system for regulatory and advisory information.
Critical safety warnings and procedures for refueling with gasoline.
Details on gasoline types, octane ratings, and gasohol compatibility.
Recommended engine oil grades, types, and quantities for Yamaha outboards.
Chart showing recommended engine oil grades based on ambient temperature.
Guidelines for proper installation, including horsepower limits and mounting.
Mandatory features for remote control units, such as start-in-gear protection.
Specifications for batteries required for electric start models, including capacity.
Notes on installing optional rectifier regulators for certain models.
Guidance on choosing the right propeller for optimal engine performance and economy.
Explanation of the safety feature preventing engine start when not in neutral.
Labeled diagram identifying key parts of the F9.9F outboard motor.
Labeled diagram identifying key parts of the T9.9G outboard motor.
Information and warnings regarding the use and function of the portable fuel tank.
Identification and function of fuel joint, fuel gauge, and fuel tank cap.
Explanation of how the remote control lever engages gears and controls throttle.
How to use the neutral interlock trigger to shift out of neutral.
Operation of the neutral throttle lever for adjusting engine speed without shifting.
How to activate the choke system for starting the engine.
How to use the tiller handle for directional control.
Instructions on using the gear shift lever for forward, neutral, and reverse.
How to use the throttle grip to increase or decrease engine speed.
Understanding the throttle indicator for fuel consumption and performance.
How to adjust throttle resistance for operator preference and safety.
Detailed explanation and safety warnings for the engine shut-off switch and cord.
How to use the engine stop button to shut off the motor.
How to use the starter button to start the engine with the electric starter.
Explanation of the main switch positions (OFF, ON, START) and their functions.
How to use the power tilt switch to adjust the outboard motor's angle.
How to adjust steering resistance for better control and operator preference.
Notes on steering adjustment, including blocking movement and lubrication.
Explanation of the trim rod's role in setting the minimum trim angle.
How the tilt lock mechanism prevents the motor from lifting out of the water.
How to use the tilt support knob to keep the motor in the tilted-up position.
How the tilt support bar holds the outboard motor in the tilted-up position.
Description of the power tilt unit and its control via the power tilt switch.
How to remove and install the engine top cowling using the lock lever.
How to use the flushing device to clean cooling water passages.
Explanation of the warning indicator and low oil pressure warning system.
Description of how the low oil pressure warning activates and actions to take.
Guidelines and warnings for properly mounting the outboard motor onto the boat transom.
Determining optimal mounting height and performing initial water testing.
Instructions for securely clamping the motor and attaching the restraint cable.
Essential break-in procedures and pre-start checks for safe and optimal engine performance.
Verifying controls, engine mounting, oil level, and safe fuel filling procedures.
Information on fuel additives and operating the engine with a portable fuel tank.
Procedures for starting the engine using manual or electric start with tiller controls.
Further details on manual starting, including choke operation and warm engine starts.
Specific steps for starting a warm engine, noting when choke is not needed.
Step-by-step guide for starting the engine using electric start and tiller controls.
How to use the engine stop button and switch for shutting down the motor.
Methods for shutting down the outboard motor after operation.
Steps for starting the engine using electric start with remote controls.
Importance and procedure for warming up the engine after starting for optimal performance.
Instructions on how to shift the outboard motor between neutral, forward, and reverse.
Warnings and procedures for safely slowing down and stopping the boat.
Methods for shutting down the outboard motor using the stop button or shut-off cord.
Explanation of trim angle and its effect on boat performance and efficiency.
Procedure for adjusting trim angle using the manual tilt rod.
Procedure for adjusting trim angle using the power tilt system.
How bow-up and bow-down attitudes affect boat performance and handling.
When and how to tilt the motor up or down to protect it from damage.
Step-by-step guide for manually tilting the outboard motor up.
Step-by-step guide for tilting the outboard motor up using the power tilt system.
Step-by-step guide for manually tilting the outboard motor down.
Step-by-step guide for tilting the outboard motor down using the power tilt system.
How to operate the motor in shallow water by partially tilting it up.
Procedure for shallow water cruising with manual tilt models.
Procedure for shallow water cruising with power tilt models.
Care and procedures for cruising in salt water and other conditions.
Recommendations for using the outboard in muddy or turbid water.
Procedures for flushing cooling passages after operating in acidic water.
Technical specifications for Yamaha outboard motors, including dimensions, weight, and performance.
Details on engine type, displacement, bore, stroke, and ignition system.
Specifications for starting systems and carburetion, including valve clearance.
Recommended fuel octane, fuel tank capacity, and engine/gear oil specifications.
Guidance on using genuine Yamaha parts and purchasing a service manual.
Explanation of how to interpret and apply maintenance interval recommendations.
Schedule for initial and periodic maintenance tasks, indicating DIY vs. dealer service.
Additional maintenance schedule for specific components and longer intervals.
Diagram showing lubrication points and instructions for applying grease.
Procedure for flushing the engine's cooling system with fresh water.
Instructions for washing the exterior and flushing the cooling system.
Inspection of the motor's paint for damage and touch-up procedures.
General guidance on performing maintenance and when to seek professional help.
Inspection of fuel lines, joints, and connectors for leaks or damage.
Procedure for checking and replacing the disposable fuel filter.
How to check and adjust the engine's idling speed for proper operation.
Step-by-step guide for draining, refilling, and checking engine oil levels.
Inspection of grounding wires and electrical connectors for secure connections.
Checking for leaks in the exhaust and water cooling systems.
Procedure for checking the engine area for any signs of oil leaks.
Inspection of the power tilt unit and switches for proper operation and leaks.
How to inspect the propeller blades and shaft for wear, damage, or entanglement.
Step-by-step instructions for safely removing the propeller, including safety precautions.
Step-by-step instructions for correctly installing the propeller, including torque specifications.
Procedure for draining and refilling gear oil, including inspection for water.
Details on gear oil quantities and torque specifications for drain/level plugs.
Safety procedures for cleaning the fuel tank, including solvent use and disposal.
How to inspect and replace sacrificial anodes to prevent corrosion.
Procedures for checking the battery's condition and safety precautions.
Guidelines for maintaining battery charge, topping up electrolyte, and storage.
Correct procedure for connecting battery cables to the terminals, including safety warnings.
Correct procedure for disconnecting battery cables, emphasizing order of removal.
Ensuring the top cowling is securely closed to prevent water entry.
Advice on cleaning the hull and using anti-fouling paint for performance.
Diagnostic questions and solutions for common problems like starter not operating or engine not starting.
Troubleshooting steps for engines that idle poorly or stall unexpectedly.
Solutions for issues like fuel system obstructions, incorrect oil, or thermostat faults.
Diagnosing and resolving issues indicated by warning buzzers or lights.
Addressing problems like improper load distribution, engine power loss, and fouled hulls.
Solutions for excessive vibration, propeller issues, and steering problems.
Immediate steps to take if the outboard motor sustains impact damage.
Procedure for safely replacing blown fuses with correct amperage spares.
Manual procedure to tilt the motor if the power tilt system fails.
Using an emergency starter rope if the starter mechanism fails.
Detailed steps for starting the engine using an emergency starter rope.
Emergency procedures for low battery voltage or ignition system malfunction.
Steps to minimize engine damage if the outboard motor becomes submerged.
Details on warranty coverage, registration, and dealer responsibilities for USA and Canada.
Contact details for Yamaha Motor Corporation, U.S.A. and Canada for customer relations.
Comprehensive overview of the three-year limited warranty for four-stroke outboard motors.
List of parts and components not covered by the warranty, such as consumables.
Information on warranty transfer and state-specific legal rights.
Guidance for using Yamaha products and obtaining service outside the USA or Canada.
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