2016 YAMAHA YZ450F Owners Manual

CABLE ROUTING DIAGRAM
2-32
1. Clutch cable
2. Throttle cable (return)
3. Throttle cable (pull)
4. Launch control switch lead
5. Engine stop switch lead
6. Cable holder
7. Coupler for connecting optional part
8. Engine stop switch coupler
9. Launch control switch coupler
10. Rectifier/regulator coupler
11. AC magneto lead
12. Starter knob/idle screw
13. Neutral switch lead
14. Crankcase cover
15. Front engine bracket
16. Radiator hose
17. Neutral switch coupler
18. AC magneto coupler
19. Tension arm
20. Rectifier/regulator lead
21. Main harness
22. Tank rail
23. Radiator
24. Cylinder head breather hose
25. Radiator breather hose
26. Down tube
27. Crankcase
A. Pass the engine stop switch lead and the launch
control switch lead between the frame and the ca-
ble holder. Route the launch control switch lead
above the engine stop switch lead.
B. Insert the coupler for connecting optional part into
the connector, and fix it to the bracket.
C. Insert and fix the engine stop switch coupler to
the bracket.
D. Make sure that the launch control switch lead
does not contact the radiator.
E. Insert and fix the launch control switch coupler to
the bracket.
F. Insert and fix the rectifier/regulator coupler to the
bracket.
G. Pass the AC magneto lead to the front of the ve-
hicle beyond the starter knob/idle screw and to
the rear of the vehicle beyond the radiator. No
pinch is allowed between the radiator and the
tension arm.
H. 70 mm (2.76 in)
I. Bring the neutral switch lead into line with the
crankcase cover with no sag allowed.
J. Bring the AC magneto lead into line with the
clutch cable with no sag allowed.
K. Pass the neutral switch lead to the inside of the
front engine bracket (the side of the vehicle).
L. Clamp the clutch cable and the AC magneto lead
by the plastic locking tie. Regardless of the orien-
tation of the lock on the plastic locking tie, cut the
end.
M. Pass the clutch cable with no downward sag al-
lowed.
N. Bring the grommet of the clutch cable into contact
with the radiator hose, and pass it to the outside
of the neutral switch lead and the AC magneto
lead (the outside of the vehicle).
O. 40 mm (1.57 in)
P. Clamp the clutch cable, the AC magneto lead,
and the neutral switch lead by the plastic locking
tie. Make sure that they are clamped at the posi-
tioning tape in the clutch cable. Make the lock on
the plastic locking tie face the front of the vehicle,
and cut the end.Q. After connecting the neutral switch coupler, at-
tach the coupler cover.
R. After connecting the AC magneto coupler, attach
the coupler cover.
S. Pass the rectifier/regulator lead to the inside of
the tension arm (the side of the vehicle).
T. Pass the main harness to the front of the radiator
hose (the front of the vehicle), and to the inside of
the throttle cable (the side of the vehicle).
U. Pass the engine stop switch lead and launch con-
trol switch lead between the coupler for connect-
ing optional part and the tank rail.
V. Pass the radiator breather hose between the
down tubes.
W. Clamp the radiator breather hose, above the en-
gine bracket (front). Clamp the lock on the plastic
tie with it located outside the vehicle, and face the
end toward the front of the vehicle.
X. Clamp the clutch cable at the front of the lead (the
front of the vehicle).
Y. Make the lock on the plastic locking tie face the
front of the vehicle, and insert the projection into
the hole in the frame. Cut the end of the plastic
locking tie.

CABLE ROUTING DIAGRAM
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CABLE ROUTING DIAGRAM
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1. Bracket
2. Condenser
3. Coolant temperature sensor
4. Coupler cover
5. Intake air pressure sensor coupler
6. Intake air temperature sensor coupler
7. Radiator hose
8. Radiator breather hose
9. Joint coupler
10. Plate
11. Tension arm
12. Throttle position sensor lead
13. Ground lead
14. Throttle position sensor coupler
15. Radiator breather hose
16. Cylinder head breather hose
17. Engine guard
18. Crankcase
19. Fuel pump coupler
20. Fuel hose
21. Condenser lead
22. Fuel pump lead
23. Condenser coupler
24. Ground lead terminal
25. Fuel tank
26. Damper
27. Rear frame
28. Main harness
A. Insert the condenser into the bracket as far as it
will go.
B. Attach the coupler cover to the coolant tempera-
ture sensor coupler.
C. Pass the radiator breather hose to the inside of
the radiator hose (the side of the vehicle).
D. Insert and fix the joint coupler to the plate. After
fixing it, attach the cover.
E. Pass the throttle position sensor lead to the out-
side of the tension arm (the outside of the vehi-
cle).
F. After connecting the throttle position sensor cou-
pler, attach the cover.
G. Pass the radiator breather hose to the outside of
the tension arm and the throttle position sensor
lead (the outside of the vehicle), and to the inside
of the radiator hose (the side of the vehicle).
H. Pass the protector of the cylinder head breather
hose until it touches the holder.
I. Pass the cylinder head breather hose between
the engine guard and the crankcase.
J. Install the end of the cylinder head breather hose
with it facing downward.
K. After connecting the fuel pump coupler, attach
the coupler cover.
L. 55 mm (2.17 in) (seat load receiver)
M. Clamp the fuel hose and the fuel pump lead by
the holder. Make sure that the painted part on the
fuel hose is clamped, and face the lock on the
clamp toward the rear top of the vehicle.
N. Do not install the plastic locking tie to the seat
load receiver.
O. Make the lock on the plastic locking tie face the
front of the vehicle, and make the end face the
bottom of the vehicle. Do not cut the end.
P. Install the ground lead terminal between the plate
and the bolt.
Q. Detent
R. Fix the ground lead terminal to the detent in the
plate. For the ground lead terminal, either side
will do.S. Insert the projection on the plastic locking tie into
the hole in the rear frame.
T. Clamp the painted part on the fuel hose by the
plastic clamp. Make the lock on the plastic clamp
face the bottom of the vehicle, and cut the end.

CABLE ROUTING DIAGRAM
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CABLE ROUTING DIAGRAM
2-36
1. Throttle cable
2. Clutch cable
3. Plastic band
4. Engine stop switch lead
5. Launch control switch lead
6. Front brake hose
7. Brake hose guide
8. Number plate
A. Number plate band
B. Pass the clutch cable to the rear of the number
plate band.
C. Clamp the engine stop switch lead and the
launch control switch lead to the handlebar by the
plastic band. Do not cut the end of the plastic
band.
D. Pass the engine stop switch lead and the launch
control switch lead between the head pipe and
the cable guide.
E. Pass the front brake hose to the front of the num-
ber plate.
F. 40°±10°
G. Vertical direction
H. Pass the clutch cable to the guide in the number
plate.

CABLE ROUTING DIAGRAM
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CABLE ROUTING DIAGRAM
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1. Main harness
2. Radiator
3. Throttle position sensor lead
4. Joint coupler
5. Intake air temperature sensor lead
6. Intake air pressure sensor lead
7. Frame
8. Fuel hose
9. High tension cord
10. Spark plug cap
11. Cylinder head cover
12. Sub-wire harness
13. Sub-wire harness coupler
14. Injector coupler
15. Injector lead
16. Launch control switch coupler
17. Launch control switch lead
18. Launch control switch lead (main harness side)
19. Rectifier/regulator lead (main harness side)
20. Grommet (high tension cord)
21. Air filter case
22. ECU
A. Fix the main harness by the plastic clamp, and in-
sert the projection of the plastic clamp into the
hole in the sheet metal of the radiator.
B. Insert the projection of the main harness into the
hole in the frame.
C. To the sub-wire harness
D. Pass the high tension cord above the fuel hose.
E. ±10°
F. Install the spark plug cap with this facing the right
of the vehicle.
G. Push the spark plug cap home, where there shall
be no gap between it and the cylinder head cover.
H. Pass the injector lead to the top of the vehicle be-
yond the fuel hose.
I. Apply adhesive to the slit and inside of the grom-
met, and then fix the grommet according to the
specified dimensions.
J. 50±3 mm (2.0±0.12 in)
K. Insert the coupler of the sub-wire harness into the
rib of the air filter case.
L. Pass the sub-wire harness between the ECU and
the air filter case.

CABLE ROUTING DIAGRAM
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