Yamaha YFM400FAR Service Manual page 387

Tightening torques
Part to be tightened
Cylinder head (exhaust pipe)
Cylinder head
Camshaft bearing retainer
Spark plug
Oil gallery bolt
Cylinder
Starter pulley
Balancer driven gear
Valve adjusting screw
Tappet cover (intake)
Tappet cover (exhaust)
Camshaft sprocket
Camshaft sprocket cover
Timing chain tensioner cap
Timing chain tensioner
Timing chain guide (intake)
Oil strainer
Oil filter union bolt
Oil filter cartridge
Oil cooler
Oil cooler fan
Oil hose union bolt
Oil hose (oil cooler side)
Oil hose (crankcase side)
Oil pump assembly
Oil pump housing
Plate (oil pump driven gear)
Intake manifold
Crankcase
Oil drain bolt
Bearing retainer (right crankcase)
Bearing retainer (left crankcase)
Crankcase oil passage plug
Lead holder (stator assembly)
Drive belt case
Bearing housing (primary sheave)
Drive belt case cover
Crankcase cover
Stator assembly
MAINTENANCE SPECIFICATIONS
Part Thread
name size
Stud bolt M6
Bolt M10
Bolt M8
Bolt M6
— M12
Bolt M6
Bolt M6
Bolt M10
Nut M16
Nut M7
Bolt M6
Bolt M6
Bolt M10
Bolt M6
Bolt M11
Bolt M6
Bolt M6
Bolt M5
— M20
— M20
Bolt M6
Bolt M6
— M14
— M16
— M16
Bolt M6
Screw M5
Bolt M6
Bolt M8
Bolt M8
Bolt M6
Bolt M12
Bolt M6
Torx
M6
screw
— M14
Bolt M5
Bolt M6
Bolt M6
Bolt M6
Bolt M6
Screw M6
– 13 –
SPEC
Tightening torque
Q'ty
Nm m·kg ft·lb
2 7 0.7 5.1
4 32 3.2 23
2 20 2.0 14
2 8 0.8 5.8
1 18 1.8 13
1 7 0.7 5.1
1 10 1.0 7.2
1 55 5.5 40
1 60 6.0 43
2 20 2.0 14
2 10 1.0 7.2
3 10 1.0 7.2
1 60 6.0 43
2 10 1.0 7.2
1 23 2.3 17
2 11 1.1 8.0
2 10 1.0 7.2
2 4 0.4 2.9
1 68 6.8 49
1 17 1.7 12
4 7 0.7 5.1
3 6 0.6 4.3
2 50 5.0 36
2 21 2.1 15
2 35 3.5 25
3 7 0.7 5.1
1 5 0.5 3.6
2 7 0.7 5.1
2 20 2.0 14
3 20 2.0 14
15 10 1.0 7.2
1 23 2.3 17
2 10 1.0 7.2
1 11 1.1 8.0
1 25 2.5 18
2 7 0.7 5.1
9 10 1.0 7.2
4 10 1.0 7.2
14 10 1.0 7.2
12 10 1.0 7.2
3 7 0.7 5.1
Remarks
LT
LT