Yamaha 40TLRD Owner's Manual

Pages 78

Year 2005

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Yamaha 40TLRD Specification

The Yamaha 40TLRD is a two-stroke outboard motor designed for reliable marine performance. It features a 40 horsepower engine that is ideal for a variety of small to medium-sized boats, providing a harmonious balance between power and efficiency. The engine has a displacement of 698cc, which ensures robust power delivery and smooth operation. With a precision-engineered two-cylinder configuration, the 40TLRD offers a dependable and straightforward design that facilitates easier maintenance and durability.

The motor employs Yamaha's proven Loop Charging Fuel System, which enhances combustion efficiency and reduces fuel consumption. Its CDI Microcomputer Ignition system ensures quick, dependable starts and optimal performance by continuously monitoring engine conditions. The 40TLRD is equipped with a manual starter and a tiller handle for intuitive and responsive steering control.

The outboard's gear ratio is set at 2.00:1, optimizing thrust and acceleration for varied boating conditions. Yamaha has integrated a shallow water drive capability, enhancing maneuverability in tight or restricted waterways. The motor's lightweight design, weighing approximately 87 kg, simplifies installation and handling.

Additionally, the Yamaha 40TLRD is engineered with a built-in fuel tank and features an optional external tank connection, offering extended range for longer journeys. The outboard motor is finished with a durable paint coating that provides excellent corrosion resistance, ensuring longevity in marine environments. Overall, the Yamaha 40TLRD is a reliable and efficient choice for boaters seeking a robust and straightforward outboard motor solution.

Yamaha 40TLRD F.A.Q.

How do I perform regular maintenance on my Yamaha 40TLRD?

Regular maintenance includes checking and replacing the engine oil, inspecting the fuel lines and filters, checking the spark plugs, and ensuring the propeller is free of damage. Also, it's important to flush the cooling system with fresh water after each use in saltwater.

What is the recommended spark plug for the Yamaha 40TLRD?

The recommended spark plug for the Yamaha 40TLRD is NGK BR8HS-10. Always check your owner's manual for confirmation and proper gap settings.

How often should I change the engine oil on my Yamaha 40TLRD?

The engine oil should be changed every 100 hours of operation or at least once per season, whichever comes first.

What should I do if my Yamaha 40TLRD outboard won't start?

If the outboard won't start, check the fuel level, battery condition, and ensure that the kill switch is in the correct position. Also, inspect the spark plugs and fuel line for any blockages or damage.

How do I troubleshoot overheating issues in my Yamaha 40TLRD?

Start by checking the water intake for blockages and ensure the water pump is functioning properly. Inspect the thermostat and replace it if necessary. Flushing the cooling system can also help resolve overheating issues.

Can I use ethanol-blended fuels in my Yamaha 40TLRD?

Yamaha recommends using fuels with no more than 10% ethanol. Higher ethanol content can cause damage to the fuel system. It's best to use ethanol-free gasoline when possible.

How do I winterize my Yamaha 40TLRD outboard motor?

To winterize, start by flushing the engine with fresh water, add fuel stabilizer, and change the engine oil. Remove and inspect the spark plugs, fog the cylinders, and store the motor in an upright position.

What propeller size should I use for optimal performance on my Yamaha 40TLRD?

The optimal propeller size can vary based on boat size, weight, and typical load. Consult the Yamaha propeller guide or your dealer for recommendations specific to your setup.

How do I replace the water pump impeller on my Yamaha 40TLRD?

Remove the lower unit, then take off the water pump housing. Carefully remove the old impeller and replace it with a new one, ensuring the fins are oriented correctly. Reassemble the unit and test the water flow.

Why is my Yamaha 40TLRD vibrating excessively?

Excessive vibration can be caused by a damaged propeller, misaligned engine mounts, or debris caught in the propeller. Inspect and clean the propeller, and check the alignment of the engine mounts.