roof YAMAHA WR 250F 2002 Owners Manual

6 - 10
–+ELECTHROTTLE POSITION SENSOR SYSTEM
5. Adjust:
Engine idling speed
Refer to “ENGINE IDLING SPEED
ADJUSTMENT” section in the CHAP-
TER 3.
6. Insert the thin electric conductors 2
(lead) into the throttle position sensor
coupler 1, as shown, and connect the
tester to them.
CAUTION:
Do not insert the electric conductors
more than required because it may
reduce the waterproof function of the
coupler.
Make sure that a short-circuit does not
develop between the terminals because it
may cause damage to electrical compo-
nents.Tester (+) lead → Yellow lead 3
Tester (–) lead → Black lead 4
7. Start the engine.
8. Adjust:
Throttle position sensor output voltage
Adjustment steps:
Adjust the installation angle of the throttle
position sensor 1 to obtain the specified
output voltage.
NOTE:
Measure the output voltage accurately with a
digital electronic voltmeter that gives an easy
reading of a small voltage.
Throttle posi-
tion sensor
output voltageTester selector
position
0.58 ~ 0.78 V DCV