Engine Tightening Torques - Yamaha XV16AL Service Manual

ENGINE TIGHTENING TORQUES

Spark plug
Cylinder head
Cylinder head
Cylinder head (exhaust pipe)
Camshaft driven gear
Camshaft drive gear
2
Connecting rod
Rocker arm adjusting screw
Front cylinder camshaft end
cover
Engine oil drain bolt (crankcase)
Engine oil drain bolt (oil tank)
Oil filter cartridge
Oil filter bolt
Oil filter bracket
Oil delivery pipe (generator
cover-to-crankcase)
Joint bolt
Oil delivery pipe (cylinder head-
to-crankcase)
Oil delivery pipe (cylinder head-
to-crankcase)
Carburetor joint
Carburetor joint clamp
Air filter case
Air filter case clamp
Exhaust pipe
Muffler
Muffler clamp
Crankcase (cylinder head)
Crankcase (cylinder head)
Crankcase (transfer gear case)
Pickup coil
Pickup coil lead holder
Stator coil assembly
Stator coil assembly lead holder
Starter clutch
Item Fastener Thread size Q'ty
Nut
Nut
Stud bolt
Nut
Bolt
Bolt
Nut
Bolt
Bolt
Nut
Union
bolt
Union
bolt
Bolt
Screw
Bolt
Screw
Nut
Bolt
Bolt
Stud bolt
Stud bolt
Stud bolt
Screw
Screw
Screw
Bolt
Bolt
TIGHTENING TORQUES
– M12 4
M12 8
M10 4
M8 4
M14 1
M10 1
M8 4
M7 4
M5 2
– M14 1
– M14 1
– M20 1
– M20 1
M6 4
M20 1
– M16 1
M10 2
M8 1
M6 4
M4 1
M6 3
M4 1
M6 4
M10 2
M10 2
M12 8
M10 4
M8 1
M6 2
M6 7
M6
3
M6 1
6
M8
2 - 19
SPEC
Tightening torque
Remarks
Nm m·kgf ft·lb
18 1.8 13
50 5.0 36
39 3.9 28
15 1.5 11
52 5.2 37
30 3.0 22
38.5 3.85 28
20 2.0 14
10 1.0 7.2
43 4.3 31
43 4.3 31
17 1.7 12
70 7.0 50
10 1.0 7.2
40 4.0 29
40 4.0 29
21 2.1 15
18 1.8 13
12 1.2 8.7
3 0.3 2.2
7 0.7 5.1
3 0.3 2.2
20 2.0 14
25 2.5 18
30 3.0 22
– – –
– – –
13 1.3 9.4
7 0.7 5.1
7 0.7 5.1
7 0.7 5.1
7 0.7 5.1
24 2.4 17
M
LT
LT
*1
E
*1
E
*2
E
LT
LT
LT
LT