Yamaha YZ450F(D), Owner'S Service Manual

Page: 38 / 228

2-8
MAINTENANCE SPECIFICATIONS
Throttle position sensor: ----
Throttle position sensor maximum resistance 5 k
Ω
----
Throttle position sensor variable resistance 0–2 k
Ω
(full closed) ----
Throttle position sensor input voltage 4–6 V ----
Fuel injection sensor: ----
Crankshaft position sensor resistance 248–372
Ω
----
Intake air pressure sensor output voltage 3.57–3.71 V at 101.3kPa (1.013 kg/cm
2
,
14.41 psi)
----
Atmospheric pressure sensor output voltage 3.57–3.71 V at 101.3kPa (1.013 kg/cm
2
,
14.41 psi)
----
Intake air temperature sensor 5.4–6.6 k
Ω
at 0 °C (32 °F)
290–390
Ω
at 80 °C (176 °F)
----
Idling condition: ----
Engine idle speed 1,900–2,100 r/min ----
Oil temperature 55–65 °C (131–149 °F) ----
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 121.4 mm (4.78 in) ----
Height 235 mm (9.25 in) ----
Thickness 28 mm (1.10 in) ----
Radiator cap opening pressure 108–137 kPa (1.08–1.37 kg/cm
2
, 15.4–
19.5 psi)
----
Radiator capacity (total) 0.62 L (0.55 Imp qt, 0.66 US qt) ----
Water pump
Type Single-suction centrifugal pump ----
Item Standard Limit