2024 Yamaha TT-R125LWE Owner’s Manual

The 2024 Yamaha TT-R125LWE is an off-road motorbike for young people. It has a single-cylinder, air-cooled, 4-stroke engine that is 125cc. It’s a great choice for young riders who want a reliable, cheap off-road motorbike. The frame and suspension of the TT-R125LWE are made to be easy for smaller riders to handle. It also has things like a handguard, an electric starter, and a skid plate. For accurate and up-to-date information about the “2024 Yamaha TT-R125LWE” and when it will be released, I suggest checking Yamaha’s official website, motorcycle enthusiast forums, and other reliable sources for the latest information on Yamaha’s product line. Do you need help with anything else?

Operation and important riding points

Engine break-in

There is never a more important period in the life of your engine than the first 5 hours of riding. It is also important to accustom the rider to the motorcycle during this time. Please read the fol-lowing information carefully. Since the engine is brand new, do not put an excessive load on it for the first 5 hours of operation. The various parts in the engine wear and polish them-selves to the correct operating clear-ances. During this period, prolonged full-throttle operation or any condition that might result in engine overheating must be avoided. However, momen-tary full-throttle operation under load (i.e., two to three seconds maximum) does not harm the engine. Each full-throttle acceleration should be fol-lowed with a substantial rest period for the engine. To allow the engine to cool down from the temporary buildup of heat, cruise at a lower engine speed. After the first 5 hours of operation, thoroughly check the motorcycle for loose parts, oil leakage and any other problems. Be sure to inspect and make adjustments thoroughly, especially ca-bles. In addition, check all fittings and fasteners for looseness, and tighten if necessary.

NOTICE
If any engine trouble should occur during the engine break-in period, immediately have a Yamaha dealer check the vehicle.

Parking
When parking, stop the engine, and then turn the fuel cock lever to “S” (stop).

WARNING

• Since the engine and exhaust system can become very hot, park in a place where pedestri-ans or children are not likely to touch them and be burned.
• Do not park on a slope or on soft ground, otherwise the vehicle may overturn, increasing the risk of a fuel leak and fire.
• Do not park near grass or other flammable materials which might catch fire.

Periodic inspection, adjustment, and lubrication will keep your vehicle in the safest and most efficient condition possible. Safety is an obligation of the vehicle owner/operator. The most im-portant points of vehicle inspection, adjustment, and lubrication are ex-plained on the following pages. The intervals given in the periodic maintenance charts should be simply considered as a general guide under normal riding conditions. However, de-pending on the weather, terrain, geo-graphical location, and individual use, the maintenance intervals may need to be shortened.

WARNING
Failure to properly maintain the vehi-cle or performing maintenance ac-tivities incorrectly may increase your risk of injury or death during service or while using the vehicle. If you are not familiar with vehicle ser-vice, have a Yamaha dealer perform service.

WARNING
Turn off the engine when performing maintenance unless otherwise specified.

• A running engine has moving parts that can catch on body parts or clothing and electrical parts that can cause shocks or fires.
• Running the engine while ser-vicing can lead to eye injury, burns, fire, or carbon monoxide poisoning – possibly leading to death. See page 2-2 for more in-formation about carbon monox-ide.

WARNING
Brake discs, calipers, drums, and linings can become very hot during use. To avoid possible burns, let brake components cool before touching them.

Periodic maintenance and adjustment

Emission controls not only function to ensure cleaner air, but are also vital to proper engine operation and maximum performance. In the following periodic maintenance charts, the services related to emissions control are grouped separately. These services require specialized data, knowledge, and equipment. Maintenance, replacement, or repair of the emission control devices and systems may be performed by any repair establishment or individual that is certified (if applicable). Yamaha dealers are trained and equipped to perform these particular services.

Owner’s tool kit
The service information included in this manual and the tools provided in the owner’s tool kit are intended to assist you in the performance of preventive maintenance and minor repairs. However, additional tools such as a torque wrench may be necessary to perform certain maintenance work correctly.

TIP
If you do not have the tools or experience required for a particular job, have a Yamaha dealer perform it for you.

Checking the spark plug
The spark plug is an important engine component, which is easy to check. Since heat and deposits will cause any spark plug to slowly erode, the spark plug should be removed and checked in accordance with the periodic main-tenance and lubrication chart. In addi-tion, the condition of the spark plug can reveal the condition of the engine.

To remove the spark plug

1. Remove the spark plug cap.
   1. Spark plug cap
2. Remove the spark plug as shown, with the spark plug wrench includ-ed in the owner’s tool kit.
   1. Spark plug wrench

To check the spark plug

1. Check that the porcelain insulator around the center electrode of the spark plug is a medium-to-light tan (the ideal color when the vehi-cle is ridden normally).
   TIP
   If the spark plug shows a distinctly dif-ferent color, the engine could be oper-ating improperly. Do not attempt to diagnose such problems yourself. In-stead, have a Yamaha dealer check the vehicle.
2. Check the spark plug for electrode erosion and excessive carbon or other deposits, and replace it if necessary.
3. Measure the spark plug gap with a wire thickness gauge and, if nec-essary, adjust the gap to specifi-cation.
   1. Spark plug gap

To install the spark plug

1. Clean the surface of the spark plug gasket and its mating sur-face, and then wipe off any grime from the spark plug threads.
2. Install the spark plug with the spark plug wrench, and then tight-en it to the specified torque.
   TIP
   If a torque wrench is not available when installing a spark plug, a good estimate of the correct torque is 1/4–1/2 turn past finger tight. However, the spark plug should be tightened to the specified torque as soon as possible.
3. Install the spark plug cap.

Removing the power reduction plate
To obtain full engine performance ca-pability, removing the power reduction plate is required.

1. Remove the exhaust manifold by removing the bolts.
   WARNING! Always let the exhaust system cool prior to touching exhaust components. [EWA14582]
   1. Exhaust manifold bolt
2. Remove the gasket.
3. Remove the power reduction plate.
   1. Exhaust manifold
   2. Gasket
   3. Power reduction plate
      TIP
      Store the power reduction plate with the Owner’s Manual so that it is readily available whenever you want to reduce the engine power.
4. Install the exhaust manifold and its new gasket by installing the bolts, and then tighten the bolts to the specified torque.

Transmission oil
The transmission must be checked for oil leakage before each ride. If any leakage is found, have a Yamaha deal-er check and repair the motorcycle. In addition, the transmission oil must be changed at the intervals specified in the periodic maintenance and lubrica-tion chart.

To change the transmission oil

1. Place the motorcycle on the cen-terstand.
2. Place an oil pan under the trans-mission to collect the used oil.
3. Remove the transmission oil filler cap, the transmission oil drain bolt and its gasket to drain the oil from the transmission.

Middle and final gear cases
The middle and final gear cases must be checked for grease leakage before each ride. If any leakage is found, have a Yamaha dealer check and repair the motorcycle. In addition, have a Yamaha dealer check and lubricate the middle and final gears at the intervals specified in the periodic maintenance and lubrication chart.

Cleaning the air filter element
The air filter element should be cleaned at the intervals specified in the periodic maintenance and lubrication chart. Clean or, if necessary, replace the air filter element more frequently if you are riding in unusually wet or dusty areas.

1. Remove the seat. (See page 4-8.)
2. Remove the air filter case cover by removing the screw.
   1. Air filter case cover
   2. Screw
3. Pull the sponge material out, clean it with solvent, and then squeeze the remaining solvent out.
   1. Sponge material
4. Apply oil of the recommended type to the entire surface of the sponge material, and then squeeze the excess oil out.
   TIP
   The sponge material should be wet but not dripping.
   Recommended oil:
   Yamaha foam air filter oil or other quality foam air filter oil
5. Insert the sponge material into the air filter case. NOTICE: Make sure that the sponge material is properly seated in the air filter case. The engine should never be operated without the sponge material installed, otherwise the piston(s) and/or cylinder(s) may become excessively worn.
6. Install the air filter case cover by installing the screw.
7. Install the seat.

Adjusting the carburetor
The carburetor is an important part of the engine and requires very sophisti-cated adjustment. Therefore, most carburetor adjustments should be left to a Yamaha dealer, who has the nec-essary professional knowledge and ex-perience. The adjustment described in the following section, however, may be serviced by the owner as part of rou-tine maintenance.

NOTICE
The carburetor has been set and ex-tensively tested at the Yamaha fac-tory. Changing these settings without sufficient technical knowl-edge may result in poor perfor-mance of or damage to the engine.

FAQ