Yamaha YZ450F(Y Owner's Manual page 29

Air filter oil grade:
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
Kickstarter:
Type
Carburetor:
Type/manufacturer
I. D. mark
Main jet (M.J)
Main air jet (M.A.J)
Jet needle - clip position (J.N)
Cutaway (C.A)
Pilot jet (P.J)
Pilot air jet (P.A.J)
Pilot outlet (P.O)
Pilot screw (example) (P.S)
Bypass (B.P)
Valve seat size (V.S)
Starter jet (G.S)
Leak jet (Acc.P)
Float height (F.H)
Engine idle speed
Intake vacuum
Hot starter lever free play
Item
MAINTENANCE SPECIFICATIONS
Standard
Foam-air-filter oil or equivalent oil
2.92–3.08 mm (0.115–0.121 in)
8
1.5–1.7 mm (0.059–0.067 in)
7
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50.0 mm (1.97 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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Kick and ratchet type
FCR-MX39/KEIHIN
2S2B B0
#160
ø2.0
NFLR-3
1.5
#45
#100
ø0.9
1-1/2
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)
2-7
Limit
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2.8 mm (0.110
in)
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0.1 mm (0.004
in)
49.0 mm (1.93
in)
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0.05 mm (0.002
in)
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