Mercury MerCruiser Service Manual page 207

Lifter
Description
Type
Rocker arm ratio
Valve lift
Head and Stem
Description
Valve diameter
Face angle
Margin after surfacing
Production stem diameter
Valve stem oil seal
Stem Clearance
Description
Production
Seat
Description
Seat angle
Top correction cut angle
Bottom correction cut angle
Width
Runout
Spring
Description
Free length
Load
Installed height
Approximate number of coils
90-8M0099748 eng DECEMBER 2015
Intake
Exhaust
Intake
Exhaust
Intake
Exhaust
Intake
Intake
Exhaust
Installed height
NOTE: Measured from the
top of the valve guide bevel
to the bottom of the oil stem
seal.
Intake
Exhaust
Intake and exhaust
Intake
Exhaust
Intake and exhaust
Valve closed
Valve open
Intake
Exhaust
© 2016 Mercury Marine
Engine Inspection and Assembly
6.2 Liter (377 cid)
Hydraulic roller
1.70:1
12.11 mm (0.4767 in.)
12.06 mm (0.4780 in.)
6.2 Liter (377 cid)
50.8 mm (2.0 in.)
39.4 mm (1.55 in.)
45°
45°
0.79 mm (0.0311 in.) minimum
7.96 mm (0.3133 in.)
7.97 mm (0.3137 in.)
0 mm (0 in.)
6.2 Liter (377 cid)
0.023–0.065 mm (0.0009–0.0025 in.)
0.033–0.075 mm (0.0012–0.00295 in.)
6.2 Liter (377 cid)
46°
30°
60°
1.016–1.651 mm (0.040–0.065 in.)
1.65–2.489 mm (0.065–0.098 in.)
0.05 mm (0.002 in.) maximum
6.2 Liter (377 cid)
53.39 mm (2.10 in.)
350 N (78.68 lb) at 46.19 mm (1.818 in.)
1084 N (243.69 lb) at 32.3 mm (1.2717 in.)
46.19 mm (1.818 in.)
6
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