Mercury FourStroke 2.5 - Cylinder Block Disassembly

Powerhead
90-8M0065421 NOVEMBER 2012 Page 4A-21
9. Remove the bolts securing the driveshaft seal housing.
a - Driveshaft seal housing bolts (M6 x 20) (2)
b - Oil pan bolts (M6 x 35) (8)
c - Pry point
Cylinder Block Disassembly
1. Remove the seven bolts securing the two cylinder block housings and separate the cylinder block housings.
6
7
8
2
1
5
4
3
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2. Remove the camshaft/gear assembly from the cylinder block.
3. Remove the crankshaft/connecting rod/piston assembly from the cylinder block.
4. Remove the oil slinger from the cylinder block.
a - Camshaft assembly
b - Crankshaft/connecting rod/piston
assembly
c - Oil slinger
d - Crankshaft seal
b
b
a
b
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c
c
b
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a
b
c
d