Yamaha WR450F 2021, Owner'S Service Manual, Page: 79 / 402

CABLE ROUTING DIAGRAM
2-26
1. Diode
2. Plug cap
3. Cylinder head cover
4. Wire harness
5. Fuel hose
6. Starter motor lead
7. Holder
8. Ignition coil
9. Side core
10.Sub-lead wire
11.Sub-lead wire coupler
12.Air filter assembly
13.Fuel tank bracket
14.Grommet
15.ECU (Engine Control Unit)
16.Clamp
17.High tension cord
18.Fuel injector lead
19.Clamp (wire harness)
20.Throttle position sensor lead
21.Intake air pressure sensor lead
22.Intake air pressure sensor coupler
23.Cylinder head breather hose
24.Throttle body
25.Fuel injector coupler
26.Rectifier/regulator lead (wire harness)
A. Install the plug cap so that there is no gap
between it and the cylinder head cover.
B. Fasten the starter motor lead along the locat-
ing damper.
C. To the sub-lead wire.
D. Scratching between the fuel tank bracket and
tools when tightening the bolts is accepted.
E. Right side of the vehicle.
F. ±10

G. Install the plug cap so it faces to the right side
of the vehicle.
H. Install the collar with its flange facing to the
head of the bolt.
I. Insert the clamp into the rib so that it contacts
the rib.
J. It does not matter if the high tension cord and
grommet do not contact the ECU.
K. Pass the wire harness between the ECU and
air filter assembly.
L. Fasten the main harness, clutch switch lead
and start switch lead by the clamp, and insert
the clamp projection into the hole in the sheet
metal of the radiator. The direction of the
clamp lock portion does not matter. It is
allowed to run the leads near the radiator cap
on the inside.
M. No pinch is allowed the leads between the
tank rail and the air filter joint.
N. Insert the projection of the main harness into
the hole in the frame.
O. Route the cylinder head breather hose in
front of the fuel injector lead.