Yamaha 2011 WR450FA, Owner'S Service Manual

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2-8
MAINTENANCE SPECIFICATIONS
Carburetor: USA, CDN, AUS,
NZ, ZA
EUROPE
I. D. mark 5TJE E0 5TJL L0 ----
Main jet (M.J) #162 #160 ----
Main air jet (M.A.J) ø2.0
←
----
Jet needle (J.N) NFNT NNHU ----
Cutaway (C.A) 1.5
←
----
Pilot jet (P.J) #45 #48 ----
Pilot air jet (P.A.J) #70
←
----
Pilot outlet (P.O) ø0.9 ← ----
Bypass (B.P) ø1.0
←
----
Valve seat size (V.S) ø3.8 ← ----
Starter jet (G.S) #65
←
----
Leak jet (Acc.P) #60 ← ----
Float height (F.H) 8 mm (0.31 in)
←
----
Engine idle speed 1,750–1,950 r/min ← ----
Intake vacuum 34.8–40.1 kPa
(261–301 mmHg,
10.28–11.85 inHg)
←
----
Hot starter lever free play 3–6 mm (0.12–0.24
in)
←
----
Lubrication system:
Oil filter type Paper type ----
Oil pump type Trochoid type ----
Tip clearance 0.12 mm or less (0.0047 in or less) 0.20 mm (0.008
in)
Side clearance 0.09–0.17 mm (0.0035–0.0067 in) 0.24 mm (0.009
in)
Housing and rotor clearance 0.03–0.10 mm (0.0012–0.0039 in) 0.17 mm
(0.0067 in)
Bypass valve setting pressure 40–80 kPa (0.4–0.8 kg/cm
2
, 5.69–11.38
psi)
----
Cooling:
Radiator core size
Width 120.2 mm (4.73 in) ----
Height (Left/Right) 260 mm (10.24 in)/240 mm (9.45 in) ----
Thickness 22 mm (0.87 in) ----
Radiator cap opening pressure 110 kPa (1.1 kg/cm
2
, 15.6 psi) ----
Radiator capacity (total) 0.57 L (0.50 Imp qt, 0.60 US qt) ----
Water pump
Type Single-suction centrifugal pump ----
Item Standard Limit