Service manual

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