Engine Specifications - Yamaha YP400T, YP400V, YP400W Service Manual

ENGINE SPECIFICATIONS

Item
Engine
Engine type
Displacement
Cylinder arrangement
Bore × stroke
Compression ratio
Engine idling speed
Vacuum pressure at engine idling
speed
Compression pressure (at sea level)
Standard
Minimum
Maximum
Fuel
Recommended fuel
Fuel tank capacity
Total
Engine oil
Lubrication system
Recommended oil
0
10 30 50
YAMALUBE 4 (20W40)
or SAE 20W40
YAMALUBE 4 (10W30)
or SAE 10W30
–20
–10 0 10
Recommended engine oil grade
Quantity
Total amount
Without oil filter element replace-
ment
With oil filter element replacement
Engine oil temperature
Final transmission oil
Type
Quantity
ENGINE SPECIFICATIONS
70 90 110 130 ˚F
20 30 40 50 ˚C
Standard
Liquid-cooled, 4-stroke, DOHC
3
394.9 cm (24.10 cu.in)
Forward-inclined single cylinder
83.0 × 73.0 mm (3.27 × 2.87 in)
10.6 : 1
1,300 ~ 1,500 r/min
35.0 ~ 41.0 kPa
(263 ~ 308 mmHg, 10.4 ~ 12.1 inHg)
1,400 kPa (14.0 kg/cm
500 r/min
1,100 kPa (11.0 kg/cm
1,650 kPa (16.5 kg/cm
Unleaded gasoline only (USA)
Regular unleaded gasoline only (CDN)
14.0 L (3.08 Imp gal, 3.70 US gal)
Wet sump
Refer to the chart for the engine oil grade.
API service SE, SF, SG type or higher
1.70 L (1.50 Imp qt, 1.80 US qt)
1.50 L (1.32 Imp qt, 1.59 US qt)
1.70 L (1.50 Imp qt, 1.80 US qt)
70 ~ 80 °C (158 ~ 176 °F)
SAE10W-30 type SE motor oil
0.25 L (0.22 Imp qt, 0.26 US qt)
2 - 2
SPEC
2
, 199.1 psi) at
2
, 156.5 psi)
2
, 234.7 psi)
Limit
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