Emission Control Information; Emission Control Carburetor Components - Suzuki DR650SE Shop Manual

8-1 EMISSION CONTROL INFORMATION
EMISSION CONTROL CARBURETOR COMPONENTS
DR650SE motorcycles are equipped with precision, manufactured carburetors for emission level con-
trol. These carburetors require special mixture control components and other precision adjustments
to function properly.
There are several carburetor mixture control components in each carburetor assembly. Three (3) of
these components are machined to much closer tolerances than standard machined carburetor jets.
These three (3) particular jets-MAIN JET, NEEDLE JET, PILOT JET -must not be replaced by stan-
dard jets. To aid in identifying these three (3) jets a different design of letter and number are used.
If replacement of these close tolerance jets becomes necessary, be sure to replace them with the
same type close tolerance jets marked as in the examples shown below.
The jet needle is also of special manufacture. Only one clip position is provided on the jet needle.
If replacement becomes necessary the jet needle may only be replaced with an equivalent perform-
ing replacement component. Suzuki recommends that Genuine Suzuki Parts be utilized whenever
possible for the best possible performance and durability.
Conventional Figures Used
1 2 3 4 5 6 7 8 9 0
on Standard Tolerance Jet
Components
Emission Type Figures
Used on Close Tolerance
I
Jet Components
2
:1 Lf 5
5 '7 B
g 0
The carburetor specifications for the emission-controlled DR650SE are as follows.
Carburetor Main Needle Jet Pilot Pilot
I.D. No. Jet Jet Needle Jet Screw
32E6
(California model only)
#/40
Y-SM
6F23
#42.5 PRE-SET
32E1
Adjusting, interferring with, improper replacement, or resetting of any of the carburetor components
may adversely affect carburetor performance and cause the motorcycle to exceed the exhaust emission
level limits. If unable to effect repairs, contact the distributors representative for further technical
information and assistance.