Cylinder Block Cleaning - BRP Evinrude E-TEC G2 Service Manual

Powerhead

Cylinder Block Cleaning

Install studs into the block to the dimensions
shown:
Stud Installation
1. M10 x 170 mm, 148.24 mm (5.83 in.)
2. M10 x 60 mm, 38.24 mm (1.5 in.)
Install cylinder head studs until the threads of the
studs are fully into the block as shown.
Stud Installation
1. Threads of studs fully into block
250
1
2
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1
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Cylinder Block Cleaning
IMPORTANT:
Before inspecting or assembling
powerhead, all internal components must be com-
pletely clean and free of contaminants.
Remove any carbon accumulation from exhaust
port areas.
Remove any carbon accumulation from cylinder
head combustion chambers.
If cylinder walls are glazed from extended use,
use a rigid, medium grit cylinder hone to resurface
walls. Use slow RPM for best oil retention and ring
sealing. When finished, a cross hatch pattern of
22 to 32° should be visible in the cylinder wall.
The pattern should be uniform in both directions.
IMPORTANT:
To avoid piston or cylinder block
damage, restore the chamfer to all port edges us-
ing a ball hone or other suitable tool.
2
1
1. Crosshatch pattern in cylinder wall
2. Chamfered port edge
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