Yamaha YZ450F(V) Owner's Service Manual page 79

Clutch:
Friction plate thickness
Quantity
Clutch plate thickness
Quantity
Warp limit
Clutch spring free length
Quantity
Clutch housing thrust clearance
Clutch housing radial clearance
Clutch release method
Shifter:
Shifter type
Guide bar bending limit
Kick starter:
Type
Carburetor:
I.D. mark
Main jet
Main air jet
Jet needle - clip position
Cutaway
Pilot jet
Pilot air jet
Pilot outlet
Pilot screw (example)
Bypass
Valve seat size
Starter jet
Leak jet
Float height
Engine idle speed
Intake vacuum
Hot starter lever free play
MAINTENANCE SPECIFICATIONS
Item
(M.J)
(M.A.J)
(J.N)
(C.A)
(P.J)
(P.A.J)
(P.O)
(P.S)
(B.P)
(V.S)
(G.S)
(Acc. P)
(F.H)
Standard
2.92 ~ 3.08 mm
(0.115 ~ 0.121 in)
9
1.1 ~ 1.3 mm (0.043 ~ 0.051 in)
8
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47.8 mm (1.88 in)
6
0.10 ~ 0.35 mm
(0.0039 ~ 0.0138 in)
0.010 ~ 0.044 mm
(0.0004 ~ 0.0017 in)
Inner push, cam push
Cam drum and guide bar
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Ratchet type
2S21 00
#165
ø2.0
NFPR-4
1.5
#42
#100
ø0.9
2-1/8
ø1.0
ø3.8
#72
#55
8 mm (0.31 in)
1,900 ~ 2,100 r/min
28.0 ~ 33.3 kPa
(210 ~ 250 mmHg,
8.27 ~ 9.84 inHg)
3 ~ 6 mm (0.12 ~ 0.24 in)
2 - 8
SPEC
Limit
2.8 mm
(0.110 in)
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0.1 mm
(0.004 in)
46.8 mm
(1.84 in)
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0.05 mm
(0.002 in)
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