Yamaha 70TLR Owner's Manual

Yamaha 70TLR manual cover
Pages 78
Year 2008
Language(s)
English en

Yamaha 70TLR Specification

The Yamaha 70TLR is a robust outboard motor designed for reliable performance and efficiency on the water. It features a 2-stroke engine with a displacement of 849cc, delivering a commendable power output of 70 horsepower. The engine is equipped with three cylinders, enhancing its smooth operation and ensuring a balanced power delivery. The 70TLR is engineered with Yamaha's precision blend oil injection system, eliminating the need for pre-mixing fuel and oil, which simplifies maintenance and enhances engine longevity.

Ignition is managed by a CDI microcomputer system, providing reliable starts and optimizing fuel efficiency. The motor is equipped with a manual trim and tilt system, allowing for straightforward adjustments to suit various water conditions. It includes a 20-inch shaft length, making it suitable for a range of boat transoms. Designed for both freshwater and saltwater applications, the motor features a durable aluminum alloy construction with a corrosion-resistant coating.

The Yamaha 70TLR incorporates a high-thrust propeller, which improves acceleration and handling at low speeds, making it ideal for larger boats or heavy loads. Its compact design and lightweight build contribute to easier installation and improved overall boat performance. Moreover, the motor complies with stringent emission standards, ensuring an environmentally friendly operation. This outboard motor is a reliable choice for boaters seeking a combination of power, efficiency, and durability for recreational or commercial use.

Yamaha 70TLR F.A.Q.

What is the recommended fuel type for the Yamaha 70TLR outboard motor?

The Yamaha 70TLR is designed to run on unleaded gasoline with a minimum octane rating of 87. Using the recommended fuel ensures optimal performance and prevents engine knocking.

How often should I change the oil in my Yamaha 70TLR?

It is recommended to change the oil every 100 hours of operation or once a year, whichever comes first. Regular oil changes help maintain engine performance and longevity.

What is the proper procedure for winterizing the Yamaha 70TLR?

Winterizing the Yamaha 70TLR involves flushing the engine with fresh water, adding fuel stabilizer to the gas tank, changing the oil, and applying fogging oil to the cylinders. This process helps protect the engine during storage in cold conditions.

How can I troubleshoot starting issues with my Yamaha 70TLR?

If the Yamaha 70TLR does not start, check the fuel supply, battery charge, and spark plugs. Ensure that the kill switch is not engaged and the choke is used properly. These are common areas that can cause starting issues.

What type of maintenance should be performed after 300 hours of use?

A 300-hour maintenance check for the Yamaha 70TLR includes inspecting the fuel system, replacing the spark plugs, checking the propeller and gear case, and performing a general engine inspection. This ensures continued reliability and performance.

How can I improve the fuel efficiency of my Yamaha 70TLR?

To improve fuel efficiency, maintain a consistent speed, ensure the boat is not overloaded, keep the engine well-tuned, and use the correct propeller size. Regular maintenance also contributes to better fuel economy.

What should I do if my Yamaha 70TLR is overheating?

If the engine is overheating, check the water intake for blockages, inspect the impeller, and ensure the cooling system is functioning properly. Addressing these areas can resolve most overheating issues.

How do I check the propeller for damage on my Yamaha 70TLR?

To check the propeller, remove it from the shaft and inspect for cracks, dents, or distortion. Ensure the blades are uniform and balanced. Damaged propellers can affect performance and should be repaired or replaced.

What is the correct spark plug gap for the Yamaha 70TLR?

The spark plug gap for the Yamaha 70TLR should be set to 0.035 inches (0.9 mm). Proper spark plug gap ensures efficient combustion and smooth engine operation.

How can I prevent corrosion on my Yamaha 70TLR?

To prevent corrosion, rinse the engine with fresh water after each use, especially in saltwater environments. Apply anti-corrosion spray to metal components and store the engine in a dry, covered area when not in use.