2016 YAMAHA YZ450F bolt pattern

CLUTCH
5-45
5. Install:
• Bearing “1”
• Washer “2”
• Circlip “3”
To push rod 1 “4”.
TIP
Apply the engine oil on the bearing and washer.
6. Install:
• Push rod 2 “1”
•Ball “2”
• Push rod 1 “3”
TIP
Apply the engine oil on the push rod 1, 2 and
ball.7. Install:
• Pressure plate “1”
8. Install:
• Clutch spring
• Clutch spring bolt
TIP
Tighten the bolts in stages and in a crisscross
pattern.
9. Install:
• O-ring “1”
TIP
Apply the lithium-soap-based grease to the O-
ring.
a. Identification color
1
2a
3
2
2
1
New
Clutch spring bolt
10 Nm (1.0 m·kgf, 7.2 ft·lbf)
T R..
New

CLUTCH
5-46
10.Install:
• Clutch cover “1”
• Clutch cover bolt
TIP
Tighten the bolts in stages and in a crisscross
pattern.
EASB111246INSTALLING THE KICKSTARTER LEVER
1. Install:
• Kickstarter lever “1”
• Washers
• Bolt (kickstarter lever)
TIP
Install so that there is a clearance “a” of 5 mm
(0.2 in) or more between the kickstarter lever
and the frame and that the kickstarter lever
does not contact the right crankcase cover
when it is pulled.Clutch cover bolt
10 Nm (1.0 m·kgf, 7.2 ft·lbf)
Bolt (kickstarter lever)
33 Nm (3.3 m·kgf, 24 ft·lbf)
T R..
1
T R..
1
a

AC MAGNETO
5-63
2. Install:
• Woodruff key “1”
• Rotor “2”
TIP
• Clean the contact surfaces of the tapered por-
tions of the crankshaft and rotor.
• When installing the woodruff key, make sure
that its flat surface “a” is in parallel with the
crankshaft center line “b”.
• When installing the rotor, align the keyway “c”
of the rotor with the woodruff key.
3. Install:
• Washers
• Nut (rotor) “1”4. Install:
• Dowel pin “1”
• Gasket (left crankcase cover) “2”
• Left crankcase cover “3”
• Lead holder “4”
• Bolt (left crankcase cover) “5”
TIP
Tighten the bolts in stages and in a crisscross
pattern.
5. Connect:
• AC magneto lead
Refer to “CABLE ROUTING DIAGRAM” on
page 2-31.
Nut (rotor)
65 Nm (6.5 m·kgf, 47 ft·lbf)
26
5
4
3
4a
1
LT
LT
b11
c
2 a
T R..
1
Bolt (left crankcase cover)
10 Nm (1.0 m·kgf, 7.2 ft·lbf)
New
T R..
1
1
2
3
5
5
5
5
4
45

CRANKCASE
5-68
EASB111280CHECKING THE CRANKCASE
1. Wash:
• Crankcase
TIP
• Wash the crankcase in a mild solvent.
• Remove any remaining gasket from the
crankcase mating surface.
2. Check:
• Crankcase
Crack/damage  Replace.
• Oil delivery passages
Obstruction  Blow out with compressed
air.
EASB111281ASSEMBLING THE CRANKCASE
1. Install:
• Bearing cover plate
TIP
• Install the bearing by pressing its outer race
parallel.
• To prevent the bearing cover plate screw
(crankshaft) “1” from becoming loose, crimp
the screw head periphery “a” into the concave
“b” using a punch etc. In so doing, take care
not to damage the screwdriver receiving hole
in the screw.
2. Apply:
• Sealant
(to the crankcase mating surface)3. Install:
• Dowel pins “1”
• Crankcase “2”
(to the left crankcase)
TIP
• Apply the lithium-soap-based grease on the
O-ring.
• Fit the right crankcase onto the left crankcase.
Tap lightly on the case with soft hammer.
• When installing the crankcase, the connecting
rod should be positioned at top dead center
(TDC).
• Tighten the bolts in a crisscross pattern in two
(2) stages, with 1/4 turn each. Bearing cover plate
10 Nm (1.0 m·kgf, 7.2 ft·lbf)
LOCTITE®
Bearing cover plate (crankshaft)
18 Nm (1.8 m·kgf, 13 ft·lbf)
Three Bond No.1215®
90890-85505
T R..
a
b
1
1
Crankcase bolt
12 Nm (1.2 m·kgf, 8.7 ft·lbf)
3. 45 mm (1.77 in)
4. 65 mm (2.56 in)
5. 75 mm (2.95 in)
T R..
5
3
5
3
3 3 45 4
3
1
12