Yamaha Tracer MT09TRA - Service manual > Tightening torques

General tightening torque specifications

This chart specifies tightening torques for standard fasteners with a standard ISO thread pitch.

Tightening torque specifications for special components or assemblies are provided for each chapter of this manual. To avoid warpage, tighten multi-fastener assemblies in a crisscross pattern and progressive stages until the specified tightening torque is reached. Unless otherwise specified, tightening torque specifications require clean, dry threads. Components should be at room temperature.

1. Distance between flats
2.  Outside thread diameter

Engine tightening torques

TIP

Camshaft cap bolt

Tighten the bolts to 10 Nm (1.0 m*kgf, 7.2 ft*lbf) following the tightening order.

TIP

Cylinder head bolt

1. Tighten the bolts to 25 Nm (2.5 m*kgf, 18 ft*lbf) with a torque wrench following the tightening order.

2. Perform the following procedure to all the bolts one by one in the tightening sequence as shown in the illustration.

1. Loosen the bolt.
2. Tighten the bolt to 16 Nm (1.6 m*kgf, 12 ft*lbf) with a torque wrench.
3. Tighten the bolt further to reach the specified angle 90º.

TIP

Connecting rod bolt

1. Tighten the bolts to 20 Nm (2.0 m*kgf, 14 ft*lbf) 2. Tighten the bolts further to reach the specified angle 175º-185º.

TIP

Crankcase bolt (main journal)

1. Lubricate the bolt threads and both sides of the washers with engine oil.

2. Tighten the bolts to 25 Nm (2.5 m*kgf, 18 ft*lbf) in the order shown in the illustration.

3. Fully loosen the bolt "1", and then tighten the bolt again to the specified torque shown below. Repeat this, one by one, until bolt "8", in the order shown in the illustration.

Tightening torque Bolts "1" to "6": 15 Nm (1.5 m*kgf, 11 ft*lbf) Bolts "7" and "8": 18 Nm (1.8 m*kgf, 13 ft*lbf) 4. Tighten the bolts in the order shown in the illustration to the specified angle 60º.

Chassis tightening torques

TIP

Lower ring nut

1. Tighten the ring nut to approximately 52 Nm (5.2 m*kgf, 38 ft*lbf) with a torque wrench, then loosen the lower ring nut completely.

2. Tighten the lower ring nut to 18 Nm (1.8 m*kgf, 13 ft*lbf).

Lubrication points and lubricant types

Engine

Chassis

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