Yamaha WR250F 2021 - Checking the Gear Position Switch; Checking the Injector

ELECTRICAL COMPONENTS
8-71
EAM30467
CHECKING THE GEAR POSITION SWITCH
1. Remove:
• Gear position switch
2. Check:
• Gear position switch
Out of specification  Replace.
3.
EAM30496
CHECKING THE INJECTOR
1. Remove:
• Fuel injector
Refer to “THROTTLE BODY” on page 7-4.
2. Check:
• Fuel injector resistance
Out of specification  Replace.
a. Disconnect the fuel injector coupler from
the fuel injector.
b. Connect the digital circuit tester () to the
fuel injector coupler.
c. Measure the fuel injector resistance.
Digital circuit tester (CD732)
90890-03243
Model 88 Multimeter with tachom-
eter
YU-A1927
Continuity
Positive tester probe 
Sky blue “1”
Negative tester probe 
Sensor terminal “a”
Continuity
Positive tester probe 
Pink “2”
Negative tester probe 
Sensor terminal “b”
Continuity
Positive tester probe 
Pink “2”
Negative tester probe 
Sensor terminal “c”
Continuity
Positive tester probe 
Yellow/White “3”
Negative tester probe 
Sensor terminal “d”
Continuity
Positive tester probe 
Yellow/White “3”
Negative tester probe 
Sensor terminal “e”
Continuity
Positive tester probe 
Yellow/White “3”
Negative tester probe 
Sensor terminal “f”
12
Resistance
12.0 
Digital circuit tester (CD732)
90890-03243
Model 88 Multimeter with tachom-
eter
YU-A1927
• Positive tester probe 
Injector terminal “1”
• Negative tester probe 
Injector terminal “2”
cba
Y/W
P
Sb
d
e
f
3
1
2
12