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Yamaha F150A Service Manual

Yamaha F150A
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1-12
Power unit technical data
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Power unit technical data
Power unit
Compression pressure
Minimum (reference data) *1 880.0 kPa (8.80 kgf/cm
2
, 127.6 psi)
Engine oil
Oil pressure *2 320.0 kPa (3.20 kgf/cm
2
, 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/cm
2
, 72.5 psi) at 62 °C
(144 °F) with SL 10W-30 engine oil and at
3000 r/min
Thermostat
Valve opening temperature 58–62 °C (136–144 °F)
Fully open temperature 70 °C (158 °F)
Fully open stroke 4.3 mm (0.17 in)
Replacement engine oil quantity
(at periodic maintenance)
Without oil filter replacement 4.3 L (4.55 US qt, 3.78 Imp.qt)
With oil filter replacement 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.
*2. For the checking method, see “Checking the oil pressure” (7-1). The figures are for reference
only.
Cylinder head assembly
Valve
Clearance (Intake) 0.17–0.24 mm (0.0067–0.0094 in)
Clearance (Exhaust) 0.31–0.38 mm (0.0122–0.0150 in)
Margin thickness (Intake) 0.40–0.80 mm (0.0157–0.0315 in)
Margin thickness (Exhaust) 0.80–1.20 mm (0.0315–0.0472 in)
Seat contact width (Intake) 1.10–1.40 mm (0.0433–0.0551 in)
Seat contact width (Exhaust) 1.40–1.70 mm (0.0551–0.0669 in)
Camshaft
Cam lobe height (Intake) 45.310–45.410 mm (1.7839–1.7878 in)
Cam lobe height (Exhaust) 44.360–44.460 mm (1.7465–1.7504 in)
Cam lobe width (Intake and exhaust) 35.950–36.050 mm (1.4154–1.4193 in)
Journal diameter 24.960–24.980 mm (0.9827–0.9835 in)
Runout 0.030 mm (0.0012 in)
Cylinder head
Warpage limit 0.10 mm (0.0039 in)
Journal inside diameter 25.000–25.021 mm (0.9843–0.9851 in)

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Yamaha F150A Specifications

General IconGeneral
BrandYamaha
ModelF150A
CategoryOutboard Motor
LanguageEnglish

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