Tightening Torques

ENGINE TIGHTENING TORQUES

Item

Fastener

Thread size

Q'ty

Tightening torque

Remarks

Nm

m*kg

ft* lb

Spark plugs

-

M10

4

13

1.3

9.4

Cylinder head

Nut

M10

10

1st 19

1.9

14

—a

2nd 50

5.0

36

Bolt

M6

2

12

1.2

8.7

Camshaft caps

Bolt

M6

20

10

1.0

7.2

Cylinder head cover

Bolt

M6

6

12

1.2

8.7

Camshaft cap oil check bolt

Bolt

M8

1

20

2.0

15

Reed valve cover

Bolt

M6

4

10

1.0

7.2

Yamaha bond No.1215 ^

Air-cut valve stay

Bolt

M6

1

10

1.0

7.2

Camshaft sprockets

Bolt

M7

4

24

2.4

17

Connecting rod caps

Nut

M7

8

15 + 150°

1.5 + 150°

11 +150°

—©

Generator rotor

Bolt

M12

1

75

7.5

54

-d

Timing chain tensioner

Bolt

M6

2

12

1.2

8.7

Timing chain tensioner cap bolt

Bolt

M6

1

7.0

0.7

5.1

Thermostat cover

Bolt

M6

2

12

1.2

8.7

Coolant hose joint

Bolt

M6

2

10

1.0

7.2

Water pump cover

Bolt

M6

2

10

1.0

7.2

Water pump

Bolt

M6

2

12

1.2

8.7

-ça

Radiator and frame

Bolt

M6

2

7.0

0.7

5.1

Radiator stay and crankcase

Bolt

M6

1

10

1.0

7.2

Oil pump cover

Bolt

M6

3

12

1.2

8.7

Oil pump

Bolt

M6

3

12

1.2

8.7

Oil pan

Bolt

M6

12

12

1.2

8.7

Oil pan (center)

Bolt

M6

1

12

1.2

8.7

Oil cooler

Bolt

M20

1

63

6.3

46

Engine oil drain bolt

Bolt

M14

1

43

4.3

31

Oil filter union bolt

Bolt

M20

1

70

7.0

51

_ ^

Oil filter

-

M20

1

17

1.7

12

Oil pump chain guide

Bolt

M6

2

12

1.2

8.7

Oil pipe

Bolt

M6

2

12

1.2

8.7

Throttle body joint

Bolt

M6

8

10

1.0

7.2

Air filter case cover

Screw

M5

6

3.0

0.3

2.2

Air filter case and frame

Bolt

M6

1

10

1.0

7.2

Throttle body and throttle body

Clamp

M4

4

3.0

0.3

2.2

joint

Throttle body and air filter case

Clamp

M5

4

3.0

0.3

2.2

Exhaust pipe and cylinder head

Nut

M8

8

20

2.0

15

Exhaust pipe and exhaust pipe

Bolt

M8

1

20

2.0

15

stay

Exhaust pipe and muffler

Bolt

M8

1

20

2.0

15

See NOTE 1

Exhaust pipe stay and frame

Bolt

M8

1

34

3.4

25

-CI

Crankcase (main journal)

Bolt

M8

10

See NOTE

2

Crankcase

Bolt

M6

2

14

1.4

1.0

^Cl

Crankcase

Bolt

M6

13

12

1.2

8.7

-a

Crankcase

Bolt

M8

2

24

2.4

17

-a

Item

Fastener

Thread

Q'ty

Tightening torque

Remarks

size

Nm

m*kg

ft* lb

Generator rotor cover

Bolt

M6

9

12

1.2

8.7

Clutch cover

Bolt

M6

9

12

1.2

8.7

Clutch cover

Bolt

M6

1

12

1.2

8.7

Yamaha bond No.1215

Pickup coil rotor cover

Bolt

M6

5

12

1.2

8.7

Clutch cable holder

Bolt

M6

2

12

1.2

8.7

Pickup coil rotor cover

Bolt

M8

1

15

1.5

11

Shift shaft cover

Bolt

M6

6

12

1.2

8.7

Breather plate

Screw

M6

3

12

1.2

8.7

Stator coil

Screw

M6

3

10

1.0

7.2

"0

Pickup rotor cover and

Screw

M6

1

7.0

0.7

5.1

clamp

Drive sprocket cover

Bolt

M6

3

10

1.0

7.2

Oil gallery bolt

-

M16

2

8

0.8

5.8

Generator rotor cover and

Screw

M6

1

10

1.0

7.2

stator coil lead clamp

Breather hose cover

Bolt

M6

4

12

1.2

8.7

-<0

Oil pipe

Bolt

M6

2

12

1.2

8.7

Crankshaft position sensor

Bolt

M6

2

10

1.0

7.2

Starter clutch

Screw

M8

3

32

3.2

23

Clutch pressure plate

Bolt

M6

6

8.0

0.8

5.8

Clutch boss

Nut

M20

1

70

7.0

51

Use a lock washer

Drive sprocket

Nut

M18

1

90

9.0

65

Use a lock washer

Transmission bearing housing

Screw

M6

3

12

1.2

8.7

~0

Shift drum retainer

Bolt

M6

2

10

1.0

7.2

~0

Shift shaft spring stopper

Screw

M8

1

22

2.2

16

Shift rod

Nut

M8

1

10

1.0

7.2

Left thread

Shift rod

Nut

M6

1

6.5

0.65

4.7

Shift rod joint

Bolt

M6

1

10

1.0

7.2

-0

Shift arm

Bolt

M6

1

10

1.0

7.2

Pickup coil rotor

Bolt

M8

1

35

3.5

25

Starter motor

Bolt

M6

2

10

1.0

7.2

Neutral switch

-

M10

1

20

2.0

14

Oil level switch

Bolt

M6

2

10

1.0

7.2

Speed sensor

Bolt

M6

1

10

1.0

7.2

Cylinder identification sensor

Bolt

M6

1

10

1.0

7.2

Yamaha bond No.1215

0 0

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