Yamaha MT-03 - Owner's Manual > Changing the brake fluid

Periodic maintenance and minor repair / Changing the brake fluid

Have a Yamaha dealer change the brake fluid at the intervals specified in the NOTE after the periodic maintenance and lubrication chart. In addition, have the oil seals of the master cylinders and calipers as well as the brake hoses replaced at the intervals listed below or whenever they are damaged or leaking.

Drive chain slack

The drive chain slack should be checked before each ride and adjusted if necessary.

To check the drive chain slack

To check the drive chain slack

  1. Drive chain slack

1. Place the motorcycle on the sidestand.

NOTE: When checking and adjusting the drive chain slack, there should be no weight on the motorcycle.

2. Shift the transmission into the neutral position.

3. Move the rear wheel by pushing the motorcycle to locate the tightest portion of the drive chain, and then measure the drive chain slack as shown.

Drive chain slack: 40.0-50.0 mm (1.57-1.97 in)

4. If the drive chain slack is incorrect, adjust it as follows.

To adjust the drive chain slack

1. Loosen the axle nut and the locknut on each side of the swingarm.

2. To tighten the drive chain, turn the adjusting bolt on each side of the swingarm in direction (a). To loosen the drive chain, turn the adjusting bolt on each side of the swingarm in direction (b), and then push the rear wheel forward.

NOTE: Using the alignment marks on each side of the swingarm, make sure that both chain pullers are in the same position for proper wheel alignment.

  1. Axle nut
  2. Drive chain slack adjusting bolt
  3. Locknut
  4. Alignment marks

CAUTION: Improper drive chain slack will overload the engine as well as other vital parts of the motorcycle and can lead to chain slippage or breakage.

To prevent this from occurring, keep the drive chain slack within the specified limits.

3. Tighten the locknuts, then the axle nut to their specified torques.

Tightening torques:

Locknut: 16 Nm (1.6 m-kgf, 11 ft-lbf)

Axle nut: 150 Nm (15.0 m-kgf, 108 ft-lbf)

Cleaning and lubricating the drive chain

The drive chain must be cleaned and lubricated at the intervals specified in the periodic maintenance and lubrication chart, otherwise it will quickly wear out, especially when riding in dusty or wet areas. Service the drive chain as follows.

CAUTION: The drive chain must be lubricated after washing the motorcycle and riding in the rain.

1. Clean the drive chain with kerosene and a small soft brush.

CAUTION: To prevent damaging the O-rings, do not clean the drive chain with steam cleaners, high-pressure washers or inappropriate solvents.

2. Wipe the drive chain dry.

3. Thoroughly lubricate the drive chain with a special O-ring chain lubricant.

CAUTION: Do not use engine oil or any other lubricants for the drive chain, as they may contain substances that could damage the O-rings.

See also:

 Yamaha MT-03 - Owner's Manual > Cast wheels

To maximize the performance, durability, and safe operation of your motorcycle, note the following points regarding the specified wheels. The wheel rims should be checked for cracks, bends or warpage before each ride. If any damage is found, have a Yamaha dealer replace the wheel. Do not attempt even the smallest repair to the wheel. A deformed or cracked wheel must be replaced. The wheel should be balanced whenever either the tire or wheel has been changed or replaced. An unbalanced wheel can result in poor performance, adverse handling characteristics, and a shortened tire life. Ride at moderate speeds after changing a tire since the tire surface must first be "broken in" for it to develop its optimal characteristics.

 Yamaha MT-03 - Owner's Manual > Checking and lubricating the cables

The operation of all control cables and the condition of the cables should be checked before each ride, and the cables and cable ends should be lubricated if necessary. If a cable is damaged or does not move smoothly, have a Yamaha dealer check or replace it.

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