Yamaha YZ450FA 2011 Owner's Service Manual page 65

1. Tension pipe
2. Coolant temperature sensor coupler
3. Front engine bracket
4. Fuel pump coupler
5. Fuel pump
6. Intake air temperature sensor coupler
7. Radiator hose 2
8. Radiator breather hose
9. Radiator hose 1
10. Radiator hose 4
11. Radiator pipe 2
12. Radiator hose 3
13. Cylinder head breather hose
14. Frame
15. ECU (electronic control unit)
16. ECU bracket
17. Main harness
18. AC magneto lead
19. Throttle position sensor lead
20. Condenser lead
21. Coolant temperature sensor lead
22. Ignition coil lead
23. Condenser
A. Fasten the wire harness at the positioning
tape to the ECU bracket with a plastic lock-
ing tie. Face the buckle of the plastic lock-
ing tie downward, and then cut off the
excess end of the tie.
B. Install the cover onto the wire harness cou-
pler.
C. Route the condenser lead, throttle position
sensor lead, coolant temperature sensor
lead, ignition coil lead, and AC magneto
lead under radiator hose 2.
D. Connect the vacuum hose to the atmo-
spheric pressure sensor, and then fasten
the hose with the clamp. Make sure to face
the moving part of the sensor rearward.
E. After connecting the condenser coupler, in-
stall the coupler cover onto the coupler.
F. After connecting the throttle position sen-
sor coupler, install the coupler cover onto
the coupler.
G. Fasten the AC magneto lead, condenser
lead, throttle position sensor lead, coolant
temperature sensor lead, and ignition coil
lead to the frame with the plastic band,
making sure to position the band between
the ignition coil bracket and the tension
pipe. Face the buckle of the plastic band to
the right with the end pointing rearward.
H. Point the end of the vacuum hose rear-
ward.
CABLE ROUTING DIAGRAM
I. Fit the bracket into the hole in the rubber
portion of the condenser.
J. Fasten the radiator breather hose to the
frame with the plastic band, making sure to
position the band above the front engine
bracket. Face the buckle of the plastic band
outward with the end pointing rearward.
K. After connecting the coolant temperature
sensor coupler, install the coupler cover
onto the coupler.
L. Route the radiator breather hose between
the down tubes.
M. Fasten the fuel hose and fuel pump lead
with the plastic band, making sure to posi-
tion the band between the bend in the fuel
hose protector and the end of the protector.
Point the end of the plastic band upward.
N. Insert the projection on the joint coupler
into the hole in the bracket, and then install
the coupler cover onto the coupler.
O. Route the atmospheric pressure sensor
lead, intake air pressure sensor lead, in-
take air temperature sensor lead, fuel injec-
tor lead, and fuel pump lead above radiator
hose 2. Position the joint coupler above ra-
diator hose 2.
P. Route the radiator breather hose to the in-
side of radiator hose 1 and the front engine
bracket.
Q. Hose installation position (1.3–3.3 mm,
0.05–0.13 in)
R. Clip installation position (0–2.0 mm, 0–0.08
in)
S. Install the washer so that it contacts the
bolt head.
T. Install the collar so that the flange on the
collar contacts the ECU bracket.
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