Checking The Injectors (Before Removing); Removing The Injectors; Checking The Injectors; Checking And Cleaning The Throttle Bodies - Yamaha XT1200Z(Z) 2010 Service Manual

EAS23P1077
CHECKING THE INJECTORS (BEFORE
REMOVING)
1. Check:
• Injectors
Use the diagnostic code number "d:36–d:37".
Refer to "DIAGNOSTIC MODE" on page
8-34.
EAS23P1078

REMOVING THE INJECTORS

EWA23P1029
WARNING
• Check the injectors in a well-ventilated area
free of combustible materials. Make sure
that there is no smoking or use of electric
tools in the vicinity of the injectors.
• Be careful when disconnecting the fuel
hose. Any remaining pressure in the fuel
hose may cause the fuel to spray out. Place
a container or rag under the hose to catch
any fuel that spills. Always clean up any
spilt fuel immediately.
• Turn the main switch to "OFF" and discon-
nect the negative battery lead from the bat-
tery terminal before removing the injectors.
1. Remove:
• Fuel rail "1"
M MMM M MMM M M MMM M
a. Remove the fuel rail screws "2" as shown.
2
L LLL L LLL L L LLL L
EAS23P1079

CHECKING THE INJECTORS

1. Check:
• Injectors
Obstruction → Replace and check the fuel
pump/fuel supply system.
Deposit → Replace.
Damage → Replace.
2. Check:
• Injector resistance
Refer to "CHECKING THE FUEL INJEC-
TORS" on page 8-155.
M MMM M M MMM M M MMM M
L LLL L L LLL L L LLL L
EAS23P1080
CHECKING AND CLEANING THE THROTTLE
BODIES
TIP
Clean the throttle bodies only if they cannot be
synchronized using the bypass air screws. Be-
fore cleaning the throttle bodies, check the fol-
lowing items:
• Valve clearance
• Spark plugs
• Air filter element
• Throttle body joints
• Fuel hose
• Exhaust system
• Cylinder head breather hose
EWA23P1030
WARNING
If the throttle bodies are subjected to strong
shocks or dropped during cleaning, replace
them as a set.
1. Check:
• Throttle bodies
Cracks/damage → Replace the throttle bod-
ies.
TIP
If the protector "a" is scratched or damaged, re-
place the throttle bodies.
MMM
1
a
2. Clean:
LLL
• Throttle bodies
ECA23P1066
NOTICE
• Observe the following precautions; other-
wise, the throttle bodies may not operate
properly.
• Do not open the throttle valves quickly.
• Do not subject the throttle bodies to exces-
sive force.
• Wash the throttle bodies in a petroleum-
based solvent.
• Do not use any caustic carburetor cleaning
solution.
7-8
THROTTLE BODIES