check oil YAMAHA WR 450F 2010 User Guide

YAMAHA WR 450F 2010 User Guide WR 450F 2010 YAMAHA YAMAHA https://www.carmanualsonline.info/img/51/52469/w960_52469-0.png YAMAHA WR 450F 2010 User Guide

Page 65 of 230

YAMAHA WR 450F 2010 User Guide 3-6
MAINTENANCE INTERVALS FOR COMPETITION USE
FRONT FORKS
Inspect and adjust●●
Replace oil●●Suspension oil "S1"
Replace oil seal●
FRONT FORK OIL SEAL AND 
DUST SEAL
Clean and lube●●Lithi

Page 66 of 230

YAMAHA WR 450F 2010 User Guide 3-7
PRE-OPERATION INSPECTION AND MAINTENANCE
PRE-OPERATION INSPECTION AND MAINTENANCE
Before riding for break-in operation or practice, make sure the machine is in good operating condition.
Before usi

Page 70 of 230

YAMAHA WR 450F 2010 User Guide 3-11
ENGINE
CHECKING THE SILENCER AND 
EXHAUST PIPE
1. Inspect:
• Gasket "1"
Damage→Replace.
INSTALLING THE SILENCER AND 
EXHAUST PIPE
1. Install:
• Gasket 
• Exhaust pipe "1"
• Nut (exhaust

Page 73 of 230

YAMAHA WR 450F 2010 User Guide 3-14
ENGINE
5. Inspect:
• Air filter element
Damage→Replace.
6. Apply:
• Foam-air-filter oil or equivalent oil 
to the element
• Squeeze out the excess oil. Ele-
ment should be wet but not dri

Page 74 of 230

YAMAHA WR 450F 2010 User Guide 3-15
ENGINE
CHANGING THE ENGINE OIL
1. Start the engine and let it warm up 
for several minutes.
2. Stop the engine and place an oil 
pan under the drain bolt.
3. Remove:
• Engine guard "1"
• Oil

Page 75 of 230

YAMAHA WR 450F 2010 User Guide 3-16
ENGINE
Using a digital engine tachometer for 
idle speed adjustment, detect the en-
gine idling speed by bringing the 
sensing element "c" of the engine ta-
chometer close to the ignition coil "2

Page 76 of 230

YAMAHA WR 450F 2010 User Guide 3-17
ENGINE
c. Select the proper pad using the 
pad selecting table.
The thickness "a" of each pad is indi-
cated in hundredths of millimeters on 
the pad upper surface.
d. Round off the last digit of

Page 81 of 230

YAMAHA WR 450F 2010 User Guide 3-22
CHASSIS
3. Inspect:
• Brake fluid level
Refer to "CHECKING THE 
BRAKE FLUID LEVEL" section.
4. Check:
• Brake pedal operation
A softy or spongy feeling→Bleed 
brake system.
Refer to "BLEEDI

Page 82 of 230

YAMAHA WR 450F 2010 User Guide 3-23
CHASSIS
When installing the drive chain, apply 
the lithium soap base grease on the 
chain joint and O-rings.
7. Install:
• Link plate
• Press the link plate onto the chain 
joint using a dri

Page 83 of 230

YAMAHA WR 450F 2010 User Guide 3-24
CHASSIS
RELIEVING THE FRONT FORK 
INTERNAL PRESSURE
If the front fork initial movement feels 
stiff during a run, relieve the front fork 
internal pressure.
1. Elevate the front wheel by placing
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