Emission Control Carburetor Components - Suzuki GS850G Service Manual

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EMISSION CONTROL
& REGULATIONS
EMISSION CONTROL CARBURETOR COMPONENTS
The GS850G is
a n ernisxion control tvpe model as i t
was
introduced after January 1. 1978. This
model utilizes
a
specially manufactured carburetor to limit emissions. Emission type carburetors
require different components and other special adjustments if they are
to
perform properly.
There are seven (7) carburetor mixture control components
in
each carburetor assembly. Three (3)
of these components are machined
to much
closer
tolerances
than standard carburetor jets.
These
three (3)
jets, MAIN JET, NEEDLE JET, PILOT JET, must
not
be replaced by standard jets. To
aid identification of these three (3) jets
a
different style letter
and
number are used. Tf replacement
of
these close
tolerance
jets
becomes necessary, be sure to replace
them with the
same
type of close
tolerance
jet
marked in the same manner as the examples shown below.
The throttle
Slide
and the Jet Needles are not special tolerance components. Either
o f
these
two
parts
may
be
replaced by standard tolerance parts provided that they are the same size. The
car-
buretor specifications for the emission-controlled GS850G are as follows.
CanvcntionaI Figure?
Used
On Standard Tolerance
.kt Compc~nents
Emis~inn
Typc Figure<
Uscd On Closc
t
olcrance
.let
components
1 2 3 4 5 6 7 8 9 0
1 2 3 4 5 6 7 8 9 a
DO NOT ADJUST THE AIR SCREW AND PILOT SCREW. Adjusting, interfering with,
replacing, or resetting of either of these adjustable metering components may affect the carburetor
performance adversely and cause the machine
to exceed the
emission
levels. Tampering
with
either
of
these
two adjustments
may also subject the person to fines under the federal emission
regulations and also the state regulations regarding tampering.
The air
screw
and pilot screw are
pre-set by the factory using specialized testing and
adjusting
procedures. It is not
possible to
duplicate these adjustments. If persons, who are unaware of these special adjustments or
the antf-
tampering
laws, have tampered
with the
carburetor
adjustments the
Suzuki
dealer should contact
the disributor's representative for further technical information and
assistance.
Air
Pilor
Pilot Needle
Carburetor
Screw
PRE-SET
Main
I.D.No. let
Cut Alvqv
Screw
- -
PRE-SET
45100
Jet
- - - -
f102.5
Jet
Needle
1.5
DO NOT ADJUST
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5DL36-2