Yamaha XT1200Z(Z) 2010 Service Manual page 442

• Do not apply cleaning solvent directly to
any plastic parts, sensors, or seals.
• Do not directly push the throttle valves to
open them.
• Be careful not to remove the white paint
mark that identifies the standard throttle
body. Do not turn the bypass air screws
"a"; otherwise, the throttle body synchroni-
zation will be affected.
a
M MMM M MMM M M MMM M
a. Place the throttle bodies on a flat surface with
the air filter case side facing up.
b. Install the caps (895-14169-00) onto the hose
fittings "a".
c. Push the lever in the direction shown in the il-
lustration to hold the throttle valves in the
open position.
EWA23P1031
WARNING
When cleaning the throttle bodies, be careful
not to injure yourself on the throttle valves or
other components of the throttle bodies.
ECA23P1067
NOTICE
Do not open the throttle valves by supplying
electrical power to the throttle bodies.
M MMM M M MMM M M MMM M
a
a
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.
MMM
e. Remove the carbon deposits from the inside
of each throttle body in a downward direction,
from the air filter case side of the throttle body
to the engine side.
ECA23P1068
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.
• 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.
7-9
THROTTLE BODIES