Suzuki GSXR-1100 1990 Service Manual page 296

10-15 GSX-RIIOOM ("91-MOD!ll
EMISSION CONTROL CARBURETOR COMPONENTS
GSX-R 1 100 motorcycles are equipped with precision. manufactured carburetors for emission level
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control. These carburetors require special mixture control components and other precision adj ustments
to function p roperly ,
There are several carburetor mixture control components in each carburetor assembly . Three (3) of these
component s are machined to much closer to lerances than standard machined carburetor je1s. These three
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(3) particular je:IS - MAIN JET. NEEDLE JET. PILOT JET - must not be replaced by standard jets. To aid
In identifying these three (3) jets a different design of leuer and number are used. If replacement of these
c lose tolerance jets becomes necessary, be sure to replace them w i1h the same type close tolerance Je1s
mar1ced as in the examples shown below.
The jet needle ls also of special manufacture. Only one cHp position Is provided on the jet needle. If
replacement becomes necessary the jet needle may only be replaced with an equivalent performing
replacement component. Suzuki recommends 1hat Genuine Suzuki Parts be utilized whenever possible
for the best possible performance and durability.
Conventional Figures Used on
Standard Tolerance Jet
1 2 3 4 5 6 7
8
9 0
Components
Emission Type Figures Used
On Close Tolerance jet
I
2
3
y.
5 5 '7 B
g
0
Components
The carburetor specifications for the emission-controlled GSX-Rl 100 are as follows.
Carburetor
Main Needle
Je1
Pilot Pilot
1.0. No, Jet
Jo1
Needle Jel
Screw
41C2
5043
(California model)
#
122s
0-8
#
:JO
PRE-SET
41C 1 {Other
DO NOT ADJUST
5D42
state models)
The pilot screw is pre-set by the factory u1illzing s.peclallzed testing and adjusting procedures. The pilo1
screw is no1 adjustable as 1he idle circuit is "sealed" after factory adjustment. Adjusting, inlerferring w ith,
improper replacement. or reseuing of any of the carburetor components may adversely affect carbure1or
performance and cause the motorcy<.le to exceed 1 he &)thausl emission level limits. If persons, who ar· e
unaware of these speclat carburetor servicing reQuiremen1 s tamper with 1he carburetors the Suzuki dealer
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should restore the carburetors
10
their original conditjon or if unable to effect rel)aits, contac1 the
distributors representative for further technical information and assistance.