CLEANING
IMPORTANT:
Before inspecting or assembling
powerhead, all internal components must
be
per-
fectly 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 medium grit hone to resurface
walls. Use
slow
RPM
to achieve a strong "crosshatch" pat-
tern for best oil retention and ring
sealing.
~
CAUTION
~
To
avoid piston
or
cylinder
block
damage,
restore the chamfer
to
all
port
edges using
a
ball hone
or
other suitable tool.
~
WARNING
~
To
avoid personal injury, wear eye protec-
tion and rubber
gloves when using
Gel
Seal
and
Gasket Remover.
POWERHEAD
CLEANING
Use Gel Seal and Gasket Remover to remove all
traces of gaskets, adhesives, and Gel-Seal II from
the
cylinder block and crankcase.
Carefully remove any carbon accumulation from
the tops and ring grooves of the piston. A ring
groove cleaning tool can
be
made by breaking an
old ring and grinding
an
angle
on
its end. Do not
damage ring grooves
while cleaning.
Thoroughly
wash entire cylinder block and crank-
7
case with warm, soapy water to remove all traces
of contaminants.
~
WARNING
~
To
avoid personal injury, wear eye protec-
tion
and set compressed air pressure at
less than 25 psi (172 kPa).
Air dry cylinder block and crankcase.
Blowout
all
holes
and passages with compressed
air.
Cover the cylinder walls with a liberal amount of
JohnsonlEvinrude Outboard Lubricant to protect
them from corrosion.
E
o
U
Qj
)(
~
Qj
~
ii
193 E
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