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7 - 4
T U N
SETTING
1
Jet needle
2
Main air jet
3
Pilot air jet
4
Needle jet
5
Main jet
6
Pilot jet
7
Pilot screw
Main jet adjustment
The richness of the air-fuel mixture at full throt-
tle can be set by changing the main jet
1
.
If the air-fuel mixture is too rich or too lean, the
engine power will drop, resulting in poor accel-
eration.
Effects of changing the main jet (reference)
Å
Idle
ı
Fully open
Standard main jet
#170
1/4
1/2
3/4
+10%
#170
–10%
#180
#160
Å
ı
Содержание WR250F(N)
Страница 322: ...4 28 ENG 7 Install Oil tank breather hose Cylinder head breather hose Spark plug T R 13 Nm 1 3 m kg 9 4 ft lb CAMSHAFTS ...
Страница 600: ...5 67 CHAS REAR SHOCK ABSORBER 8 Install Band 1 Taillight connector 2 ...
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Страница 686: ...PRINTED IN JAPAN 2000 11 2 5 1 CR PRINTED ON RECYCLED PAPER YAMAHA MOTOR CO LTD 2500 SHINGAI IWATA SHIZUOKA JAPAN ...