Yamaha XT1200Z 2010 Service Manual page 146

Manuals by Motomatrix / www.motomatrix.co.uk / The Solution For Lost Motorcycle Coded Keys
B
A. Left side
B. Right side
5. Check:
• Throttle body synchronization
M MMM M MMM M M MMM M
a. Start the engine, warm it up for several min-
utes, and then let it run at the specified en-
gine idling speed.
Engine idling speed
1050–1150 r/min
b. Check the vacuum pressure.
The difference in vacuum pres-
sure between the throttle bodies
should not exceed 1.33 kPa (10
mmHg).
If out of specification → Adjust the throttle
body synchronization.
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Adjusting the throttle body synchronization
1. Adjust:
• Throttle body synchronization
M MMM M MMM M M MMM M
a. Start the engine, warm it up for several min-
utes, and then let it run at the specified en-
gine idling speed.
Engine idling speed
1050–1150 r/min
b. Using the throttle body that has the bypass air
screw "1" with a white paint mark as the stan-
dard, adjust the other throttle body by turning
its bypass air screw in or out.
email: info@motomatrix.co.uk
M MMM M M MMM M M MMM M MMM
L LLL L L LLL L L LLL L LLL
M MMM M M MMM M M MMM M MMM
PERIODIC MAINTENANCE
ECA23P1079
NOTICE
Do not turn the bypass air screw of the throt-
tle body that is the standard.
Otherwise, the engine may run roughly at
idle and the throttle bodies may not operate
properly.
TIP
• Turn the cylinder #1 air screw or cylinder #2 air
5
screw using the carburetor angle driver.
• After each step, rev the engine two or three
times, each time for less than a second, and
check the synchronization again.
• If a bypass air screw was removed, turn the
screw in fully and be sure to synchronize the
throttle bodies.
• If the throttle body synchronization can not be
adjusted using the bypass air screw, clean or
replace the throttle bodies.
• The difference in vacuum pressure between
the throttle bodies should not exceed 1.33 kPa
(10 mmHg).
Carburetor angle driver 2
90890-03173
A
B
A. Left side
B. Right side
L LLL L LLL L
3-9
1
1
L LLL L L LLL L L LLL L L LLL L LLL