Yamaha XTZ690 2020, Service Manual

Page: 301 / 472

THROTTLE BODIES
7-8
EAS30979
REMOVING THE THROTTLE BODIES
1. Remove:
• Throttle bodies
a. Remove the battery box bracket “1”.
b. Remove the holders “2” from the frame
and battery box.
c. Lift the wire harness “3” in the direction of
the arrow shown.
d. Remove the air filter case bolts (left/right)
“4”.
e. Pull the air filter case rearward to remove
it from the throttle bodies.
f. Remove the throttle bodies.
EAS30475
CHECKING THE INJECTORS (BEFORE
REMOVING)
1. Check:
• Injectors
Use the diagnostic code numbers “36” and
“37”.
Refer to “SELF-DIAGNOSTIC FUNCTION
AND DIAGNOSTIC CODE TABLE” on page
9-1.
EAS30476
REMOVING THE INJECTORS
WARNING
EWA17330
• 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
EAS30477
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 8-140.
EAS30769
CHECKING AND CLEANING THE THROTTLE
BODIES
TIP
Before checking the throttle bodies, check the
following items:
• Valve clearance
A. Left
B. Right
1
2
3
4
4
A B