2007 YAMAHA WR 450F light

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GEN
INFO
CLEANING AND STORAGE
8. Automotive wax may be applied to all
painted or chromed surfaces. Avoid combi-
nation cleaner-waxes, as they may contain
abrasives.
9. After completing the above, start the
engine and allow it to idle for several min-
utes.
EC1B2001
STORAGE
If your machine is to be stored for 60 days or
more, some preventive measures must be
taken to avoid deterioration. After cleaning the
machine thoroughly, prepare it for storage as
follows:
1. Drain the fuel tank, fuel lines, and the car-
buretor float bowl.
2. Remove the spark plug, pour a tablespoon
of SAE 10W-30 motor oil in the spark plug
hole, and reinstall the plug. With the engine
stop switch pushed in, kick the engine over
several times to coat the cylinder walls with
oil.
3. Remove the drive chain, clean it thoroughly
with solvent, and lubricate it. Reinstall the
chain or store it in a plastic bag tied to the
frame.
4. Lubricate all control cables.
5. Block the frame up to raise the wheels off
the ground.
6. Tie a plastic bag over the exhaust pipe out-
let to prevent moisture from entering.
7. If the machine is to be stored in a humid or
salt-air environment, coat all exposed
metal surfaces with a film of light oil. Do not
apply oil to rubber parts or the seat cover.
NOTE:
Make any necessary repairs before the
machine is stored.

SPEC
2 - 3 Brake:
Front brake type Single disc brake
Operation Right hand operation
Rear brake type Single disc brake
Operation Right foot operation
Suspension:
Front suspension Telescopic fork
Rear suspension Swingarm (link type monocross suspension)
Shock absorber:
Front shock absorber Coil spring/oil damper
Rear shock absorber Coil spring/gas, oil damper
Wheel travel:
Front wheel travel 300 mm (11.8 in)
Rear wheel travel 305 mm (12.0 in)
Electrical:
Ignition system CDI
Generator system AC magneto
Battery type YTZ7S
Battery voltage/capacity 12 V/6 AH
Specific gravity 1.310
Headlight type: Quartz bulb (halogen)
Bulb wattage × quantity:
Headlight 12 V 35/36.5 W × 1
Taillight 12 V 1.6/0.3 W × 1
GENERAL SPECIFICATIONS

SPEC
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NOTE:
- marked portion shall be checked for torque tightening after break-in or before each race. Speed sensor lead holder and under bracket M6 × 1.0 1 13 1.3 9.4
Headlight body and headlight unit—210.10.7
Headlight mounting (left and right) M6 × 1.0 2 7 0.7 5.1
Taillight mounting—310.10.7
Taillight lead clamp and rear fender—3 0.5 0.05 0.36
Catch tank (upper) M6 × 1.0 1 16 1.6 11
Catch tank (lower) M6 × 1.0 1 7 0.7 5.1
Footrest bracket and frame M10 × 1.25 4 55 5.5 40
Sidestand mounting M10 × 1.25 1 25 2.5 18 Part to be tightened Thread size Q’tyTightening torque
Nm m·kg ft·lb
MAINTENANCE SPECIFICATIONS

SPEC
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EC212300
ELECTRICAL
Item Standard Limit
Ignition system:
Advancer type Electrical ----
C.D.I.:
Pickup coil resistance (color) 248 ~ 372 Ω at 20 °C (68 °F)
(White – Red)----
CDI unit-model/manufacturer 5TJ-E0/YAMAHA (For USA)
5TJ-F0/YAMAHA
(Except for USA)----
----
Ignition coil:
Model/manufacturer 5TA-10/DENSO ----
Minimum spark gap 6 mm (0.24 in) ----
Primary winding resistance 0.08 ~ 0.10 Ω at 20 °C (68 °F) ----
Secondary winding resistance 4.6 ~ 6.8 kΩ at 20 °C (68 °F) ----
Charging system:
System type AC magneto ----
Model (stator)/manufacturer 5TJ 40/YAMAHA ----
Normal output 14 V/120 W at 5,000 r/min ----
Charging coil resistance (color) 0.288 ~ 0.432 Ω at 20 °C (68 °F)
(White – Ground)----
Lighting coil resistance (color) 0.224 ~ 0.336 Ω at 20 °C (68 °F)
(Yellow – Ground)----
Rectifier/regulator:
Regulator type Semiconductor short circuit ----
Model/manufacture SH770AA/SHINDENGEN ----
Regulated voltage (AC) 12.5 ~ 13.5 V ----
Regulated voltage (DC) 14.0 ~ 15.0 V ----
Rectifier capacity (AC) 12 A ----
Rectifier capacity (DC) 8 A ----
Electric starting system:
Type Constant mesh ----
Starter motor:
Model/manufacturer 5UM20/YAMAHA ----
Operation voltage 12 V ----
Output 0.48 kW ----
Armature coil resistance 0.0117 ~ 0.0143 Ω at 20 °C
(68 °F)----
Brush overall length 7 mm (0.28 in) 3.5 mm
(0.14 in)
Brash quantity 2 pcs. ----
Spring force 3.92 ~ 5.88 N
(400 ~ 600 g, 14.1 ~ 21.2 oz)----
Commutator diameter 17.6 mm (0.69 in) 16.6 mm
(0.65 in)
Mica undercut (depth) 1.5 mm (0.06 in) ----
MAINTENANCE SPECIFICATIONS

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SPECCABLE ROUTING DIAGRAM
ÐFasten the AC magneto lead and neutral switch
lead onto the frame. Locate the clamp end fac-
ing toward the rear of the frame and cut off the
tie end.
ÑPass the neutral switch lead and AC magneto
lead on the inside of the wire harness.
ÒFasten the AC magneto lead and neutral switch
lead onto the frame.
ÓPass the wire harness through the cable guide.
ÔLocate the couplers in the frame recess.
ÕPass the carburetor breather hoses, carburetor
overflow hose and catch tank breather hose so
that the hoses do not contact the rear shock
absorber.
ÖSecure the coupler by pushing it into the hole inthe headlight unit.

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SPECCABLE ROUTING DIAGRAM
1Brake master cylinder
2Brake hose holder
3Brake hoseÈInstall the brake hose so that its pipe portion
directs as shown and lightly touches the projec-
tion on the brake caliper.
ÉPass the brake hose into the brake hose hold-
ers.
ÊIf the brake hose contacts the spring (rear shock
absorber), correct its twist.
ËInstall the brake hose so that its pipe portion
directs as shown and lightly touches the projec-
tion on the brake master cylinder.

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SPECCABLE ROUTING DIAGRAM
1Clamp
2Positive battery lead
3Battery
4Negative battery lead
5Taillight coupler
6CDI unit coupler (6-pin)
7CDI unit coupler (3-pin)
8CDI unit coupler (6-pin)ÈFasten the wire harness to the upper engine
bracket (left side). Locate the clamp end facing
toward the upper side of the frame with the tie
end cut off on the inside of the frame.
ÉFasten the wire harness to the upper engine
bracket (left side). Locate the clamp end facing
toward the upper side of the frame with the tie
end cut off on the inside of the frame. Clamp the
wire harness at the marking.
ÊPass the starter motor lead through the hole in
the relay holder.
ËFit the cover securely.
ÌConnect the wire harness to the starter relay.

2 - 29
SPECCABLE ROUTING DIAGRAM
ÍFasten the catch tank breather
hose and catch tank hose to the
rear frame. Clamp them close
to where they are joined to the
frame. Fasten the pipe tightly
enough not to crush it. Locate
the clamp end facing toward the
rear of the frame with the tie
end facing downward.
ÎFasten the (three) CDI unit
leads and taillight lead to the
rear frame. Locate the clamp
end facing toward the upper
side of the frame and cut off the
tie end.
ÏConnect the negative battery
lead to the battery negative ter-
minal.
ÐConnect the negative battery
lead to the wire harness.ÑFasten the wire harness to the
rear frame. Locate the clamp
end facing toward the upper
side of the frame and the tie
end toward the inside of the
frame. Clamp the wire harness
at the marking.
ÒPass the wire harness, starter
relay lead, starting circuit cut-off
relay lead and negative battery
lead through the hole in the
relay holder.
ÓFasten the (three) CDI unit
leads and taillight lead to the
rear frame. Locate the clamp
end facing toward the lower
side of the frame and cut off the
tie end.ÔFasten the taillight lead to the
rear frame. Locate the clamp
end facing toward the upper
side of the frame and cut off the
tie end.
ÕDo not allow the taillight lead to
slacken.
ÖLocate the CDI unit lead
between the CDI unit and rear
fender.
×Locate the CDI unit coupler in
the clearance between the
upper side of the CDI unit and
lower side of the catch tank
stay.
ØLocate the CDI unit lead
between the CDI unit and rear
frame.