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Kohler KT19 series II User Manual

Kohler KT19 series II
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SECTION 7
DISASSEMBLY
Overheating:
An
exhaust
valve
subject
to
overheating
will
have
a
dark
discoloration
in
the
area
above
the
valve
guide. Worn
guides
and
faulty
valve
springs
may
cause
this
condition.
Also
check
for
clogged
air
intake,
blocked fins,
and
lean
fuel
mixture
when
this
condition
is
noted.
L~
-~;-
\
Min. \
Margin
Face
Stem
Over
Cut
Carbon
Cut:
Excessive
buildup
of
deposits
in
the
combustion
chamber
may
result
in
valve
damage
be-
cause
deposits
can
become
hard
enough
to
cut
the
valve.
Cleaning
of
the
cylinder
head
at
proper
intervals
could
prevent
such
damage.
Valve
Guide
Depth
Figure
7-8.
Valve
Details
Valve Guides
Guides
must
be
replaced
if
worn
sufficiently
to
allow
valve
stem
guide
clearance
to exceed
limits
stated
in
Section
1
"Specifications,
Wear
Toler-
ances,
Torques
and
Special
Tools."
To
remove,
press
guide
down
into
valve
chamber
and
carefully
break
protruding
end
until
guide
is
completely
removed.
Be
careful
not
to
damage
the
cylinder
barrel
when
removing
the
old guide.
Clean
the
valve
guide
bores
thoroughly.
Press
46
replacement
guides
into
cylinder
barrel
to
depth
specified,
then
ream
to
proper
I.
D.
(see
Figure
7-8).
Valve Seat Inserts
Intake
valve
seats
are
machined
into
the
cylinder
barrel
on
most
KT models,
however,
certain
ap-
plications
may
call
for
hard
alloy
intake
valve
seat
inserts.
The
exhaust
valve
seats
on
these
models
are
always
replaceable
alloy
inserts.
If
the
seats
become
badly
pitted,
cracked
or
distorted
the
in-
serts
must
be
replaced.

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Kohler KT19 series II Specifications

General IconGeneral
BrandKohler
ModelKT19 series II
CategoryEngine
LanguageEnglish

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