7 - 7
TUN
Jet needle adjustment
The jet needle is adjusted by changing it.
* Except for USA
The tapered sections of all jet needles have
the same starting positions, but the needles
are available with different straight-portion
diameters.
Standard jet needle OBDVS
* OBELP
<Example>
OBDVS - 4
Clip position
Diameter a of straight portion
Effects of changing the jet needle
(reference)
(Diameter of the straight portion)
Changing the diameter of the straight portion
adjusts the air-fuel mixture when the throttle is
1/8 to 1/4 open.
ÈIdle
ÉFully open
+10 %
S
–10 %
R
T
1/4 1/2 3/4 ÉÈ
SETTING