Yamaha XN125 2000 Service Manual page 164

CARBURETOR
2. Check:
• autochoke unit
a. Connect ø 3.3 mm hose to the starter air
passage and blow into the hose.
NOTE:
When the starter plunger is open, air should
come out of the other side of the starter air
passage.
Starter plunger opens → → → → → Perform step.
Starter plunger closes → → → → → Replace the
3. Check:
• autochoke unit
a. Connect the autochoke unit leads to a
12.0V battery for five minutes.
Positive battery lead → → → → → black
Negative battery lead → → → → → black
b. Connect ø 3.3-mm hose to the starter air
passage and blow into the hose.
Starter plunger opens → → → → → Replace the
Starter plunger closes → → → → → Autochoke unit
EAS00505
CHECKING THE FUEL COCK
1. Check:
• fuel cock
Cracks/damage/wear → Replace.
2. Check:
• fuel cock strainer
(with compressed air)
Dirt/obstruction → Clean.
Damage → Replace.
6-7
CARB
autochoke unit.
autochoke unit.
is OK.