ENGINE SPECIFICATIONS
2-2
EAS20290
ENGINE SPECIFICATIONS
Engine
Engine type Air cooled 4-stroke, DOHC
Displacement 1251.0 cm
3
Cylinder arrangement Forward-inclined parallel 4-cylinder
Bore × stroke 79.0 × 63.8 mm (3.11 × 2.51 in)
Compression ratio 9.70 :1
Standard compression pressure (at sea level) 1050 kPa/400 r/min (149.3 psi/400 r/min) (10.5
kgf/cm
2
/400 r/min)
Minimum–maximum 900–1200 kPa (128.0–170.7 psi) (9.0–12.0 kgf/
cm
2
)
Starting system Electric starter
Fuel
Recommended fuel Premium unleaded gasoline only
Fuel tank capacity 21.0 L (5.55 US gal) (4.62 Imp.gal)
Fuel reserve amount 4.5 L (1.19 US gal) (0.99 Imp.gal)
Engine oil
Lubrication system Wet sump
Type SAE10W30, SAE10W40, SAE15W40,
SAE20W40 or SAE20W50
Recommended engine oil grade API service SG type or higher, JASO standard
MA
Engine oil quantity
Total amount 4.20 L (4.44 US qt) (3.70 Imp.qt)
Without oil filter element replacement 2.80 L (2.96 US qt) (2.46 Imp.qt)
With oil filter element replacement 3.15 L (3.33 US qt) (2.77 Imp.qt)
Oil cooler capacity (including all routes) 0.2 L (0.21 US qt) (0.18 Imp.qt)
Oil pressure (hot) 80.0 kPa/1000 r/min (11.6 psi/1000 r/min) (0.80
kgf/cm
2
/1000 r/min)
Oil filter type Paper
Oil pump
Oil pump type Trochoid
Inner-rotor-to-outer-rotor-tip clearance 0.120 mm or less (0.0047 in or less)
Limit 0.20 mm (0.0079 in)
Outer-rotor-to-oil-pump-housing clearance 0.090–0.150 mm (0.0035–0.0059 in)
Limit 0.160 mm (0.0063 in)
Oil-pump-housing-to-inner-and-outer-rotor clearance
0.03–0.08 mm (0.0012–0.0032 in)
Limit 0.15 mm (0.0059 in)
Bypass valve opening pressure 180.0–220.0 kPa (26.1–31.9 psi) (1.80–2.20
kgf/cm
2
)
Relief valve operating pressure 480.0–580.0 kPa (69.6–84.1 psi) (4.80–5.80
kgf/cm
2
)
Pressure check location MAIN GALLERY
Spark plug (s)
Manufacturer/model NGK/DPR8EA-9
Spark plug gap 0.8–0.9 mm (0.031–0.035 in)
Cylinder head
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