Yamaha XT660 2004, Service Manual

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SPEC
ENGINE SPECIFICATIONS
ENGINE SPECIFICATIONS
Item Standard Limit
Engine
Engine type Liquid-cooled, 4-stroke, SOHC ----
Displacement 660 cm
3
(40.27 cu · in) ----
Cylinder arrangement Forward-inclined single cylinder ----
Bore
×
stroke 100.0
×
84.0 mm (3.94
×
3.31 in) ----
Compression ratio 10.00 : 1 ----
Engine idling speed 1,300 ~ 1,500 r/min ----
Water temperature 80 °C (176 °F) ----
Oil temperature 55 ~ 60 °C (131 ~ 140 °F) ----
Standard compression pressure
(at sea level) 650 kPa (6.5 kg/cm
2
, 92.4 psi)
at 800 r/min
----
Fuel
Recommended fuel Premium unleaded gasoline only ----
Fuel tank capacity
Total (including reserve) 15.0 L (3.30 Imp gal, 3.96 US gal) ----
Reserve only 5.0 L (1.10 Imp gal, 1.32 US gal) ----
Engine oil
Lubrication system Dry sump ----
Recommended oil
Refer to the chart for engine oil grade.
API service SE, SF, SG type or higher ----
Quantity
Total amount 2.90 L (2.55 Imp qt, 3.07 US qt) ----
Periodic oil change 2.50 L (2.20 Imp qt, 2.64 US qt) ----
With oil filter replacement 2.60 L (2.29 Imp qt, 2.75 US qt) ----
Oil filter
Oil filter type Paper ----
Bypass valve opening pressure 40.0 ~ 80.0 kPa
(0.40 ~ 0.80 kg/cm
2
, 5.8 ~ 11.6 psi)
----
Pressure check location Oil filter chamber ----
-20 -10 0 10 20 30 40 50 ˚C
SAE 10W-30
SAE 15W-40
SAE 20W-40
SAE 20W-50
SAE 10W-40