Oil System Specifications - Mercury 15 EFI FourStroke Service Manual

Valve stem diameter
Cylindricity (maximum)
Valve face width (intake and exhaust)
Valve face width (service limit)
Valve margin thickness
Valve seat width
Valve guide bore
Valve stem to valve guide
clearance
Rocker arm shaft outside diameter
Rocker arm shaft outside diameter (service limit)
Rocker arm inside diameter
Rocker arm inside diameter (service limit)
Rocker arm shaft clearance
Cylinder head upper camshaft bearing inside diameter
Oil pump camshaft bearing inside diameter
Valve stem seal color

Oil System Specifications

Oil pump type
Oil type
Oil capacity
Engine oil pressure at 75 °C
(167 °F)
Oil pump housing inside diameter (service limit)
Outer rotor to oil pump housing inside diameter clearance (service limit)
Outer rotor height (service limit)
Rotor to oil pump cover clearance (service limit)
Inner rotor to outer rotor clearance (service limit)
90-8M0125265 eng NOVEMBER 2017
Parameter
Intake
Intake (service limit)
Exhaust
Exhaust (service limit)
Intake
Exhaust
Intake and exhaust
Intake valve guide bore (service limit)
Exhaust valve guide bore (service limit)
Intake
Intake (service limit)
Exhaust
Exhaust (service limit)
Intake
Exhaust
Parameter
All temperatures
Alternate viscosity above 4 °C (40 °F)
At 950 RPM
At 5000 RPM
© 2018 Mercury Marine
Specifications
Specification
5.48 mm (0.216 in.)
5.46 mm (0.215 in.)
5.46 mm (0.215 in.)
5.44 mm (0.214 in.)
0.01 mm (0.0004 in.)
1.0 mm (0.04 in.)
2.0 mm (0.08 in.)
0.55 mm (0.0217 in.)
1.00 mm (0.0394 in.)
1.0 mm (0.04 in.)
5.51 mm (0.217 in.)
5.55 mm (0.218 in.)
5.57 mm (0.219 in.)
0.008–0.04 mm
(0.0003–0.0016 in.)
0.07 mm (0.0028 in.)
0.025–0.057 mm
(0.001–0.0022 in.)
0.1 mm (0.004 in.)
12.99 mm (0.511 in.)
12.94 mm (0.509 in.)
13.01 mm (0.512 in.)
13.05 mm (0.514 in.)
0.006–0.035 mm
(0.00023–0.0014 in.)
17.975–17.990 mm
(0.7077–0.7083 in.)
15.965–15.980 mm
(0.6285–0.6291 in.)
Black
Green
Specification
Trochoid
FC‑W® 10W‑30
FC‑W® 25W‑40
1.0 L (1.1 U.S. qt)
50 kPa (7.3 psi) or greater
100 kPa (14.5 psi) or greater
29.15 mm (1.148 in.)
0.18 mm (0.007 in.)
14.96 mm (0.589 in.)
0.11 mm (0.004 in.)
0.13 mm (0.005 in.)
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