4-10 FUEL
AND
LUBRICATION
SYSTEM
CLEANING
A WARNING
Some
carburetor
cleaning
chemicals
,
especially
dip-
type
soaking
solutions
, are
very
corrosive
and
must
be
handled
carefully
.
Always
follow
the
chemical
manufacturer
's
instructions
for
proper
use,
handling
and
storage.
• Clean a
ll
jels wilh a spray-Iype carburelor cleaner and dry
them using compressed air.
• Clean all circuits
01
the carburetor
Ihoroughly-nol
just the
perceived problem area.
Clean the circuils
in
Ihe carburelor
body wilh a spray-type cleaner.
If
necessary, soak each cir-
cuit
in
a dip-type cleaning solution to loosen dirl and varnish.
Dry
Ihe carburetor body using compressed
air.
_A CAUTION ]
Do
not
use
wire
to
clean the passageways, valve seat,
and
jets
.
If
the
GUIIIJJulI~nl:s
c~nnot
be
cleaned
with
a
spray-type cleaner
it
may be
necessary
to
soak
them
in a
dip-type
cleaning
solution.
Always
follow
the chemi-
cal
manufacturer
's
instructions
for
proper
use
and
cleaning
of
the
carburetor
components.
• After cleaning, reassemble Ihe carburetor with new O-rings.
[A CAUTION ]
Replace
the
removed
O-rings
with
new
ones
.
INSPECTION
Check Ihe following ilems for any damage or clogging.
If
any
u""'''Y''''
"'"
fuurru
,
'''fJ1",,,,,
tI,,,
u"lTIaged parts with new ones.
* Pilol jel * Valve seat
* Main jet * Jel needle
* Main air jel * Piston valve
* Pilol air jel * Starler (enricher) jet
* Needle jet air bleeding hoi * O-ring
* Float * Throttle valve
* Needle valve * Diaphragm
* Pilol outlet and bypass ports
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