250
Powerhead
Cylinder Block Cleaning
Install studs into the block to the dimensions
shown:
Install cylinder head studs until the threads of the
studs are fully into the block as shown.
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.
Stud Installation
1.
M10 x 170 mm, 148.24 mm (5.83 in.)
2.
M10 x 60 mm, 38.24 mm (1.5 in.)
009184
Stud Installation
1.
Threads of studs fully into block
009729
1
2
1
1.
Crosshatch pattern in cylinder wall
2.
Chamfered port edge
002067
2
1
Содержание E 250 L HO AG B
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Страница 275: ...Powerhead Powerhead Views 275 11 Rear 250 H O 300 HP Models 009376...
Страница 276: ...276 Powerhead Powerhead Views Front Frame Removed 009379...
Страница 277: ...Powerhead Powerhead Views 277 11 Front Frame Installed 009378...
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