Yamaha YZFR1Y(C) 2009 Service Manual page 56

TIGHTENING TORQUES
Thread
Item Q'ty Tightening torque Remarks
size
Speed sensor bolt M6 1 10 Nm (1.0 m·kgf, 7.2 ft·lbf)
LT
TIP
Cylinder head nut
Use new nuts and washers.
1. Apply engine oil to bolt thread and mating surface.
2. Tighten the bolt to 10 Nm (1.0 m·kgf, 7.2 ft·lbf).
3. Tighten the bolt to 25 Nm (2.5 m·kgf, 18 ft·lbf).
4. Tighten the bolts 1–7 and 10 to 115°–125° and bolts 8 and 9 to 130°–140°.
TIP
Connecting rod cap bolt
Use new bolts.
1. Apply Molybdenum-disulfide grease to bolt thread and cap/nut mating surface.
2. Tighten the bolt to 20 Nm (2.0 m·kgf, 14 ft·lbf).
3. Retighten the bolt further to reach the specified angle of 145°–155°.
TIP
Crankcase bolt (main journal)
1. Lubricate the bolts thread, mating surfaces and washers with engine oil.
2. First, tighten the bolts to approximately 30 Nm (3.0 m·kgf, 22 ft·lbf) with a torque wrench.
3. Loosen all the bolts one by one following the tightening order and then tighten them to 18 Nm
(1.8 m·kgf, 13 ft·lbf) again.
4. Retighten the bolts further to reach the specified angle of 60°.
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