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Mercury 50 Service Manual

Mercury 50
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CYLINDER BLOCK/CRANKCASE
Page 4B-32 90-828631R3 MARCH 1999
2. Lubricate pistons, rings, and cylinder walls with engine oil.
3. Install each piston in its respective cylinder.
NOTE: Install used pistons into same cylinder from which they were removed.
4. Use Piston Ring Compressor (FT2997) to compress rings.
5. Position the “UP” mark on the piston toward the flywheel side. Push each piston into the
cylinder until all rings enter the bore.
IMPORTANT: Position the “UP” mark on the piston toward the flywheel end.
53818
53748
a
a-Piston Ring Compressor (FT2997)
Crankshaft Installation
1. Lubricate the crankshaft bearing surfaces with engine oil.
53822
2. Carefully lower crankshaft into place.
3. Lubricate the connecting rod journals with engine oil.
4. Assemble the connecting rods to the crankshaft. Install the connecting rod caps, align-
ing the code letter marked on the connecting rod and cap.

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Mercury 50 Specifications

General IconGeneral
Horsepower50 hp
Cylinders3
SteeringRemote
StartingElectric
Displacement995 cc
Fuel Induction SystemEFI (Electronic Fuel Injection)
Alternator Output18 amp
Shaft Length20" / 508 mm
Dry Weight112 kg
Engine Type4-Stroke

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