7 - 7
T U N
Jet needle adjustment
The jet needle is adjusted by changing it.
* Except for USA and CDN
The tapered sections of all jet needles have
the same starting positions, but the needles
are available with different straight-portion
diameters.
<Example>
OBELQ - 3
Clip position
Diameter
a
of straight portion
Standard jet needle
OBELQ
* OBEKP
Effects of changing the jet needle (refer-
ence)
(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.
È
Idle
É
Fully open
+10 %
Q
–10 %
P
R
1/4
1/2
3/4
È
É
SETTING