Adjusting The Throttle Position Sensor - Yamaha Vmax VMX17C 2009 Service Manual

EWA2S31034
WARNING
When cleaning the throttle bodies, be careful
not to injure yourself on the throttle valves or
other components of the throttle bodies.
ECA2S31074
NOTICE
Do not open the throttle valves by supplying
electrical power to the throttle bodies.
1
d. Apply a petroleum-based solvent to the throt-
tle valves and the inside of the throttle bodies
to remove any carbon deposits.
TIP
• Do not allow any petroleum-based solvent to
enter the opening for the injectors.
• Do not apply any petroleum-based solvent to
the portions of the throttle valve shafts be-
tween the throttle bodies.
e. Remove the carbon deposits from the inside
of each throttle body in a downward direction,
from the engine side of the throttle body to the
air filter case side.
ECA2S31069
NOTICE
• Do not use a tool, such as a wire brush, to
remove the carbon deposits; otherwise, the
inside of the throttle bodies may be dam-
aged.
a
7-16
THROTTLE BODIES
• Do not allow carbon deposits or other for-
eign materials to enter any of the passages
in each throttle body or in the space be-
tween the throttle valve shaft and the throt-
tle body.
f. After removing the carbon deposits, clean the
inside of the throttle bodies with a petroleum-
based solvent, and then dry the throttle bod-
ies using compressed air.
g. Make sure that there are no carbon deposits
or other foreign materials in any of the pas-
sages "a" in each throttle body or in the space
"b" between the throttle valve shaft and the
throttle body.
a
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3. Check:
• Fuel passages
Obstructions → Clean.
M MMM M MMM M M MMM M M MMM M
a. Wash the throttle bodies in a petroleum-
based solvent.
ECA2S31070
NOTICE
Do not use any caustic carburetor cleaning
solution.
b. Blow out all of the passages with compressed
air.
L LLL L LLL L L LLL L L LLL L
EAS29080
ADJUSTING THE THROTTLE POSITION
SENSOR
EWA2S31016
WARNING
• Handle the throttle position sensor with
special care.
• Never subject the throttle position sensor
to strong shocks. If the throttle position
sensor is dropped, replace it.
1. Check:
• Throttle position sensor
Refer to "CHECKING THE THROTTLE PO-
SITION SENSOR" on page 8-137.
a
b
a
L LLL L L LLL L LLL
M MMM M M MMM M MMM
L LLL L L LLL L LLL