2012 YAMAHA WR 450F maintenance

PERIODIC MAINTENANCE AND ADJUSTMENT
6-37
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2
3
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8
9installing the spacers, be sure
to install them on the correct
side.
[ECA17700]

2. Lift the wheel up between the fork legs.
TIPMake sure that there is enough space
between the brake pads before install-
ing the brake caliper onto the brakedisc.
3. Insert the wheel axle from the right-hand side.
4. Install the axle nut.
5. Lower the front wheel so that it is on the ground, and then put the
sidestand down.
6. Tighten the axle nut to the speci- fied torque.
7. Tighten the front wheel axle pinch bolts to the specified torque, and
then install the rubber cap. 8. Push down hard on the handlebar
several times to check for proper
fork operation.
EAU25080
Rear wheel
EAU45183
To remove the rear wheel
WARNING
EWA10821
To avoid injury, securely support the
vehicle so there is no danger of itfalling over.
1. Loosen the axle nut.
2. Lift the rear wheel off the ground according to the procedure on
page 6-35.
3. Remove the axle nut and washer.
4. Loosen the locknut on each side of the swingarm.
Tightening torque:Axle nut:
90 Nm (9.0 m·kgf, 65 ft·lbf)
Tightening torque: Front wheel axle pinch bolt:12 Nm (1.2 m·kgf, 8.7 ft·lbf)
1. Axle nut
2. Washer1
2
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-38
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9
5. Turn the drive chain slack adjust-
ing bolts fully in direction (a).
6. Push the wheel forward, and then remove the drive chain from the
rear sprocket.
TIPThe drive chain does not need to be
disassembled in order to remove andinstall the rear wheel.
7. While supporting the brake caliper, pull the wheel axle out.
8. Remove the drive chain pullers, spacers and the wheel. NOTICE:
Do not apply the brake after the
wheel has been removed to-
gether with the brake disc, oth-
erwise the brake pads will be
forced shut.
[ECA11071]

EAU45193
To install the rear wheel 1. Install the spacers into both sides of the wheel hub. NOTICE: When
installing the spacers, be sure
to install them on the correct
side.
[ECA17700]

2. Install the wheel, drive chain pull- ers and the brake caliper bracket
by inserting the wheel axle from
the left-hand side.
TIP
Make sure that the retainer on the
brake caliper bracket is inserted into the slot in the swingarm.

Make sure that there is enough
space between the brake pads be-fore installing the wheel.
3. Install the drive chain onto the rear sprocket.
4. Install the washer and the axle nut.
5. Lower the rear wheel so that it is on the ground, and then put the
sidestand down.
6. Adjust the drive chain slack. (See page 6-24.)
7. Tighten the axle nut, and then the locknuts to their specified torques.
1. Drive chain slack adjusting bolt
2. Locknut
3. Brake caliper
1 2
3
(a)
1. Brake caliper bracket
2. Retainer
3. Slot
1
2
3
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PERIODIC MAINTENANCE AND ADJUSTMENT
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EAU25871
Troubleshooting Although Yamaha motorcycles receive
a thorough inspection before shipment
from the factory, trouble may occur dur-
ing operation. Any problem in the fuel,
compression, or ignition systems, for
example, can cause poor starting and
loss of power.
The following troubleshooting charts
represent quick and easy procedures
for checking these vital systems your-
self. However, should your motorcycle
require any repair, take it to a Yamaha
dealer, whose skilled technicians have
the necessary tools, experience, and
know-how to service the motorcycle
properly.
Use only genuine Yamaha replace-
ment parts. Imitation parts may look like
Yamaha parts, but they are often inferi-
or, have a shorter service life and can
lead to expensive repair bills.
WARNING
EWA15141
When checking the fuel system, do
not smoke, and make sure there are
no open flames or sparks in the ar-
ea, including pilot lights from waterheaters or furnaces. Gasoline or
gasoline vapors can ignite or ex-
plode, causing severe injury or
property damage.
Tightening torques:
Axle nut:125 Nm (12.5 m·kgf, 90 ft·lbf)
Locknut:
19 Nm (1.9 m·kgf, 13 ft·lbf)
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PERIODIC MAINTENANCE AND ADJUSTMENT
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EAU53121
Troubleshooting charts Starting problems or poor engine performance
Check the fuel level in
the fuel tank.1. Fuel
There is enough fuel.There is no fuel.
Check the compression.
Supply fuel.
The engine does not start.
Check the compression.
Operate the electric starter
or the kickstarter.2. Compression
There is compression.
There is no compression.
Check the ignition. Have a Yamaha dealer
check the vehicle.
Remove the spark plug
and check the electrodes.3. Ignition
Wipe off with a dry cloth and correct the
spark plug gap, or replace the spark plug.
Have a Yamaha dealer check the vehicle.
The engine does not start.
Have a Yamaha dealer
check the vehicle.
The engine does not start.
Check the battery.
Operate the electric starter.4. Battery
The engine turns over
quickly.
The engine turns over
slowly.
The battery is good.
DryWet
Operate the electric starter or the
kickstarter.
Check the battery lead connections,
and have a Yamaha dealer charge
the battery if necessary.
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-41
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9Engine overheating
WARNING
EWAT1040

Do not remove the radiator cap when the engine and radiator are hot. Scalding hot fluid and steam may be
blown out under pressure, which could cause serious injury. Be sure to wait until the engine has cooled.

Place a thick rag, like a towel, over the radiator cap, and then slowly rotate the cap counterclockwise to the de-
tent to allow any residual pressure to escape. When the hissing sound has stopped, press down on the capwhile turning it counterclockwise, and then remove the cap.
TIPIf coolant is not available, tap water can be temporarily us
ed instead, provided that it is changed to the recommended coolantas soon as possible.
Wait until the
engine has cooled.
Check the coolant level in the
reservoir and radiator.
The coolant level
is OK.The coolant level is low.
Check the cooling system
for leakage.
Have a Yamaha dealer checkand repair the cooling system.Add coolant. (See TIP.)
Start the engine. If the engine overheats again,
have a
Yamaha dealer check
and repair the cooling system.
There is
leakage.
There is
no leakage.
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INDEX
AAir filter element and check hose,
cleaning ................................................. 6-14
Auxiliary light bulb, replacing ................... 6-35BBattery ..................................................... 6-30
Brake and clutch levers, checking and lubricating .............................................. 6-27
Brake fluid, changing ............................... 6-24
Brake fluid level, checking ....................... 6-23
Brake lever ................................................ 3-8
Brake lever free play, checking ............... 6-21
Brake light switches ................................. 6-22
Brake pedal ............................................... 3-9
Brake pedal, checking and lubricating ..... 6-28CCables, checking and lubricating ............. 6-26
Care ........................................................... 7-1
Catalytic converter ................................... 3-11
Clutch lever................................................ 3-8
Clutch lever free play, adjusting .............. 6-20
Coolant .................................................... 6-12DDimmer switch ........................................... 3-7
Drive chain, cleaning and lubricating ....... 6-26
Drive chain slack ..................................... 6-24EEngine break-in ......................................... 5-4
Engine idling speed ................................. 6-17
Engine oil and oil filter element.................. 6-8
Engine, starting a warm ............................. 5-2
Engine stop switch..................................... 3-7
Engine trouble warning light ...................... 3-2
FFront and rear brake pads, checking ...... 6-22
Front fork, adjusting ................................ 3-14
Front fork, bleeding ................................. 3-15
Front fork, checking................................. 6-29
Fuel ......................................................... 3-10
Fuel consumption, tips for reducing .......... 5-3
Fuel level warning light .............................. 3-2
Fuel tank breather hose .......................... 3-11
Fuel tank cap............................................. 3-9
Fuse, replacing........................................ 6-31HHandlebar switches ................................... 3-7
Headlight bulb, replacing......................... 6-32
High beam indicator light ........................... 3-2
Horn switch ............................................... 3-7IIdentification numbers ............................... 9-1
Ignition circuit cut-off system ................... 3-19
Indicator lights and warning lights ............. 3-1KKickstarter ............................................... 3-12LLicense plate light bulb, replacing ........... 6-34MMain switch ............................................... 3-1
Maintenance and lubricatio n, periodic....... 6-4
Maintenance, emission control system ..... 6-3
Matte color, caution ................................... 7-1
Model label ................................................ 9-1
Multi-function display................................. 3-2NNeutral indicator light ................................ 3-1
PPanel, removing and installing ...................6-7
Parking.......................................................5-5
Part locations .............................................2-1SSafety information ......................................1-1
Seat ......................................................... 3-13
Shifting .......................................................5-3
Shift pedal ..................................................3-8
Shift pedal, checking................................ 6-22
Shock absorber assembly, adjusting .......3-16
Sidestand .................................................3-18
Sidestand, checking and lubricating ........6-28
Spark plug, checking .................................6-7
Specifications.............................................8-1
Starter knob .............................................3-12
Starting a cold engine ................................5-1
Start switch ................................................3-7
Steering, checking ................................... 6-29
Steering lock ............................................3-13
Storage ......................................................7-3
Supporting the motorcycle .......................6-35
Swingarm pivots, lubricating .................... 6-28TTail/brake light ......................................... 6-33
Throttle grip and cable, checking and lubricating ..............................................6-27
Throttle grip free play, checking............... 6-17
Tires ......................................................... 6-18
Tool kit .......................................................6-2
Troubleshooting ....................................... 6-39
Troubleshooting charts ............................6-40
Turn signal indicator light ...........................3-1
Turn signal light bul b, replacing ............... 6-34
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