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Specifications [Power Unit Technical Data] [2017]

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Specifications [Power Unit Technical Data] [2017]
LIT-18616-03-35
Yamaha Marine

Fuel system technical data

Fuel system

Fuel pressure (reference data) 300.0 kPa (3.00 kgf/cm2, 43.5 psi) within 3 sec
onds after engine start switch turned to ON
260.0 kPa (2.60 kgf/cm2, 37.7 psi) at engine idle
speed
Fuel filter assembly
Fuel inlet holding pressure
(positive pressure)
Fuel outlet holding pressure
(negative pressure)


S200 kPa (2.0 kgf/cm2, 29.0 psi)

80 kPa (0.8 kgf/cm2,11.6 psi)
Primer pump
Fuel inlet holding pressure
(positive pressure)


166.7 kPa (1.67 kgf/cm2, 24.2 psi)
Throttle link
Roller clearance

0.50 mm (0.02 in)
Vapor separator tank
Float height

55.0-61.0 mm (2.2-2.4 in)
Canister
Holding pressure (positive pressure)

19.6 kPa (0.20 kgf/cm2, 2.8 psi)

Power unit technical data

Power unit

Compression pressure
Minimum (reference data) *1
880.0 kPa (8.80 kgf/cm2, 127.6 psi)
Engine oil
Oil pressure *2


320.0 kPa (3.20 kgf/cm2, 46.4 psi) at 60 °C
(140 °F) with SL 10W-30 engine oil and at
700 r/min
500.0 kPa (5.00 kgf/cm2, 72.5 psi) at 62 °C
(144 °F) with SL 10W-30 engine oil and at
3000 r/min
Thermostat
Valve opening temperature
Fully open temperature
Fully open stroke
58-62 °C (136-144 °F)
70 °C (158 °F)
4.3 mm (0.17 in)
Replacement engine oil quantity
(at periodic maintenance)
Without oil filter replacement
With oil filter replacement


4.3 L (4.55 US qt, 3.78 Imp.qt)
4.5 L (4.76 US qt, 3.96 Imp.qt)
    1. Measuring conditions: Ambient temperature 20 °C (68 °F), fully open throttle,with spark plugs removed from all cylinders.
    1. For the checking method, see “Checking the oil pressure” (7-1). The figures are for reference only.

Cylinder head assembly

Valve
Clearance (Intake)
Clearance (Exhaust)
Margin thickness (Intake)
Margin thickness (Exhaust)
Seat contact width (Intake)
Seat contact width (Exhaust)t

0.17-0.24 mm (0.0067-0.0094 in)
0.31-0.38 mm (0.0122-0.0150 in)
0.40-0.80 mm (0.0157-0.0315 in)
0.80-1.20 mm (0.0315-0.0472 in)
1.10-1.40 mm (0.0433-0.0551 in)
1.40-1.70 mm (0.0551-0.0669 in)
Camshaft
Cam lobe height (Intake)
Cam lobe height (Exhaust)
Cam lobe width (Intake and exhaust)
Journal diameter
Runout
45.310—45.410 mm (1.7839-1.7878 in)
44.360-44.460 mm (1.7465-1.7504 in)
35.950-36.050 mm (1.4154-1.4193 in)
24.960-24.980 mm (0.9827-0.9835 in)
0.030 mm (0.0012 in)
Cylinder head
Warpage limit
Journal inside diameter
0.10 mm (0.0039 in)
25.000-25.021 mm (0.9843-0.9851 in)
Piston ring (Oil)
Dimension height (B)
Dimension width (T)
End gap (reference data)
Side clearance
EndFragment


2.400-2.470 mm (0.0945-0.0972 in)
2.300-2.700 mm (0.0906-0.1063 in)
0.15-0.60 mm (0.0059-0.0236 in)
0.04-0.13 mm (0.0016-0.0051 in)
Connecting rod
Small end inside diameter
Big end inside diameter
Big end side clearanceEndFragment

21.022-21.037 mm (0.8276-0.8282 in)

53.025-53.045 mm (2.0876-2.0884 in)
0.14-0.31 mm (0.006-0.012 in)
0.030-0.057 mm (0.0012-0.0022 in)
Crankshaft
Journal diameter
Crankpin diameter
Runout
Crankpin width
Journal oil clearance

51.980-52.000 mm (2.0465-2.0472 in)
49.980-50.000 mm (1.9677-1.9685 in)
0.03 mm (0.0012 in)
22.000-22.100 mm (0.8661-0.8701 in)
0.021-0.046 mm (0.0008-0.0018 in)
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