Product Manual

Lubricants, Sealants, Adhesives
Tube Ref No. Description Where Used Part No.
9
Loctite® 567 PST Pipe
Sealant
Oil pressure switch threads 92-809822
12
Loctite® Master Gasket Kit Cylinder block and crankcase cover mating surfaces 92-12564 2
110
4-Stroke 10W-30 Outboard
Oil
Piston pin
Piston rings
Piston, piston rings, and cylinder bore
Crankshaft seal and main bearing area, crankshaft main and
connecting rod journals, connecting rod bearing area, upper and
lower oil crankshaft seal lips
Engine crankcase
92-8M0078625
Special Tools
Piston Ring Expander 91‑ 24697
6255
Expands piston rings for removal and installation.
Piston Ring Compressor FT2997
8745
Compresses the piston rings to ease piston installation
Cylinder Block/Crankcase Specifications
Parameter Specification
Number of cylinders 2
Displacement 333 cc (20.3 cid)
Standard bore 61.00 mm (2.4016 in.)
Standard bore (service limit) 61.06 mm (2.4039 in.)
Cylinder bore maximum taper (service limit) 0.08 mm (0.0032 in.)
Cylinder bore maximum out of round (service limit) 0.06 mm (0.0023 in.)
Crankshaft main bearing journal 33.992 mm (1.3382 in.)
Crankshaft main bearing journal (service limit) 33.972 mm (1.3374 in.)
Crankshaft pin journal 28.972–28.985 mm (1.1406–1.1411 in.)
Crankshaft pin journal (service limit) 28.970 mm (1.1405 in.)
Crankshaft end play 0.1–0.2 mm (0.004–0.008 in.)
Crankshaft runout 0.030 mm (0.00118 in.)
Crankshaft runout (service limit) 0.03 mm (0.001 in.)
Crankshaft main bearing oil clearance 0.012–0.044 mm (0.0005–0.0017 in.)
Crankshaft main bearing oil clearance (service limit) 0.06 mm (0.002 in.)
Crankshaft pin bearing oil clearance 0.015–0.041 mm (0.0006–0.0016 in.)
Crankshaft pin bearing/connecting rod oil clearance (service limit) 0.060 mm (0.002 in.)
Connecting rod wrist pin bore diameter 16.010–16.021 mm (0.6303–0.6307 in.)
Connecting rod wrist pin bore diameter (service limit) 16.025 mm (0.6309 in.)
Cylinder Block/Crankcase
Page 4A-2 © 2018 Mercury Marine 90-8M0125265 eng NOVEMBER 2017