Piston Specifications; Cylinder Head Specifications - Mercury 15 EFI FourStroke Service Manual

Specifications
Connecting rod wrist pin bore diameter
Connecting rod wrist pin bore diameter (service limit)
Connecting rod crankshaft pin diameter
Connecting rod crankshaft pin diameter (service limit)
Connecting rod side clearance
Connecting rod side clearance (service limit)

Piston Specifications

Piston skirt standard diameter
Piston skirt standard diameter (service limit)
Piston to bore clearance
Wrist pin diameter
Wrist pin diameter (service limit)
Top ring side clearance
Top ring side clearance (service limit)
Second ring side clearance
Second ring side clearance (service limit)
Oil ring side clearance
Oil ring side clearance (service limit)
Top ring end gap
Top ring end gap (service limit)
Second ring end gap
Second ring end gap (service limit)
Oil ring end gap

Cylinder Head Specifications

Maximum deck warp
Number of valves
Number of valves per cylinder
Number of camshafts
Camshaft journal outside diameter
Cam lobe height
Valve clearance
Valve seat angles
Valve spring free length
Valve spring free length (service limit)
Valve spring tilt limit
Page 1A-4
Parameter
Parameter
Parameter
Pulley side
Pulley side (service limit)
Oil pump side
Oil pump side (service limit)
Intake
Exhaust
Intake and exhaust (service limit)
Intake
Exhaust
© 2018 Mercury Marine
Specification
16.010–16.021 mm (0.6303–0.6307 in.)
16.025 mm (0.6309 in.)
29.000–29.013 mm (1.1417–1.1422 in.)
28.038 mm (1.1432 in.)
0.1–0.25 mm (0.004–0.01 in.)
0.6 mm (0.0236 in.)
Specification
60.96 mm (2.40 in.)
60.90 mm (2.3976 in.)
0.020–0.055 mm (0.0008–0.0022 in.)
15.996–16.000 mm (0.6298–0.6299 in.)
15.993 mm (0.6296 in.)
0.03–0.08 mm (0.0012–0.0031 in.)
0.1 mm (0.004 in.)
0.02–0.06 mm (0.0008–0.0024 in.)
0.09 mm (0.0035 in.)
0.03–0.13 mm (0.0012–0.0051 in.)
0.15 mm (0.0059 in.)
0.15–0.30 mm (0.0059–0.0118 in.)
0.5 mm (0.02 in.)
0.35–0.50 mm (0.0138–0.0197 in.)
0.7 mm (0.028 in.)
0.2–0.7 mm (0.008–0.028 in.)
Specification
0.1 mm (0.004 in.)
17.98 mm (0.708 in.)
17.95 mm (0.707 in.)
15.97 mm (0.629 in.)
15.95 mm (0.628 in.)
23.63 mm (0.9303 in.)
23.80 mm (0.9370 in.)
23.50 mm (0.9252 in.)
0.13–0.17 mm (0.005–0.007 in.)
0.18–0.22 mm (0.007–0.008 in.)
30°, 45°, 60°
32.85 mm (1.293 in.)
31.50 mm (1.240 in.)
1.1 mm (0.043 in.)
90-8M0125265 eng NOVEMBER 2017
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