Honda NSS250S Manual page 260

FUEL SYSTEM (PGM-FI)
INSPECTION
Remove the PAIR control solenoid valve (page 6-
105).
Check that the air should flow (A) to (B), only when
the 12 V battery is connected to the PAIR control
solenoid valve terminals.
Air should not flow when the battery is connected.
Measure the resistance between the terminals of
the PAIR control solenoid valve.
STANDARD: 20 – 24 Ω (20°C/68°F)
If the resistance is out of specification, replace the
PAIR control solenoid valve.
Install the PAIR control solenoid valve (page 6-105).
PAIR CHECK VALVE
REMOVAL/INSTALLATION
Remove the luggage lower box (page 3-16).
Remove the bolt, stay and cover.
Remove the PAIR check valve from the cover.
Remove the baffle plate from the cylinder.
6-106
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PAIR SOLENOID VALVE
(A)
(B)
COVER
BOLT
BAFFLE PLATE
BOLT/STAY
PAIR CHECK VALVE