Yamaha YZ250F(N)/LC Owner's Service Manual page 83

Part to be tightened
Spark plug
Camshaft cap
Cylinder head blind plug screw
Cylinder head (stud bolt)
(stud bolt)
(bolt)
(nut)
Cylinder head cover
Cylinder
Balancer weight
Balancer shaft driven gear
Timing chain guide (intake side)
Decompression shaft
Decompression cable guide
Timing chain tensioner
Timing chain tensioner cap bolt
Impeller
Radiator hose clamp
Coolant drain bolt
Water pump housing
Radiator
Radiator guard
Radiator pipe
Oil pump cover
Oil pump
Oil filter element drain bolt
Oil filter element cover
Oil strainer
Oil delivery pipe 1 (M10)
(M8)
Oil delivery pipe 2
Oil hose
Oil hose clamp
Oil strainer and frame
Carburetor joint clamp
Air filter joint clamp
Throttle cable cover
Air filter joint
Air filter joint and air filter case
Air filter element
Exhaust pipe (nut)
(bolt)
Exhaust pipe protector
MAINTENANCE SPECIFICATIONS
Thread size
2 - 10
Q'ty
M10S 1.0 1
M6 1.0 10
M12 1.0 1
M6 1.0 2
M8 1.25 1
M9 1.25 4
M6 1.0 2
M6 1.0 2
M6 1.0 1
M6 1.0 2
M14 1.0 1
M6 1.0 2
M6 1.0 1
M6 1.0 1
M6 1.0 2
M6 1.0 1
M8 1.25 1
M6 1.0 8
M6 1.0 1
M6 1.0 4
M6 1.0 6
M6 1.0 2
M6 1.0 1
M4 0.7 1
M6 1.0 3
M6 1.0 1
M6 1.0 2
M6 1.0 2
M10 1.25 1
M8 1.25 2
M6 1.0 1
M6 1.0 3
— 2
M18 1.5 1
M4 0.7 2
M6 1.0 1
M5 0.8 1
M5 0.8 2
M5 0.8 5
M6 1.0 1
M8 1.25 1
M8 1.25 1
M6 1.0 3
SPEC
Tightening torque
Nm m·kg ft·lb
13 1.3 9.4
10 1.0 7.2
37 3.7 27
7 0.7 5.1
15 1.5 11
38 3.8 27
10 1.0 7.2
10 1.0 7.2
10 1.0 7.2
10 1.0 7.2
50 5.0 36
10 1.0 7.2
7 0.7 5.1
10 1.0 7.2
10 1.0 7.2
7 0.7 5.1
14 1.4 10
2 0.2 1.4
10 1.0 7.2
10 1.0 7.2
10 1.0 7.2
10 1.0 7.2
10 1.0 7.2
3 0.3 2.2
10 1.0 7.2
10 1.0 7.2
10 1.0 7.2
10 1.0 7.2
20 2.0 14
18 1.8 13
10 1.0 7.2
10 1.0 7.2
2 0.2 1.4
90 9.0 65
3 0.3 2.2
3 0.3 2.2
4 0.4 2.9
5 0.5 3.6
1 0.1 0.7
2 0.2 1.4
13 1.3 9.4
24 2.4 17
10 1.0 7.2