2009 YAMAHA YFZ450R Owners Manual

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20 Engine oil

Change.

Check ATV for oil leakage, and correct if neces-
sary.
√ √√√
21Engine oil filter ele-
ment

Replace.
√√√
22 Cooling system

Check coolant level and ATV for coolant leakage,
and correct if necessary.
√√√√√

Replace coolant. Every 2 years
23
*
Moving parts and
cables

Lubricate.
√√√√
24
*
Throttle lever hous-
ing and cable


Check operation and correct if necessary.

Check throttle cable free play and adjust if neces-
sary.

Lubricate throttle lever housing and cable.
√√√√√
25
*
Front and rear brake
switches

Check operation and correct if necessary.
√√√√√
26
*
Lights and switches

Check operation and correct if necessary.

Adjust headlight beams.
√√√√√
NO. ITEMCHECK OR MAINTENANCE
JOBINITIAL EVERY
Whichev-
er comes
firstmonth136612
km
(mi)320
(200)1300
(800)2500
(1600)2500
(1600)5000
(3200)
hours 20 80 160 160 320

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EBU29430
TIP


Some maintenance items need more frequent service if you are riding in unusually wet, dusty, sandy or
muddy areas, or at full-throttle.

Replace the fuel hose every five years and if cracked or damaged.

Hydraulic brake service

Regularly check and, if necessary, correct the brake fluid level.

Every two years replace the internal components of the brake master cylinders and calipers, and
change the brake fluid.

Replace the brake hoses every four years and if cracked or damaged.

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EBU23090
Removing and installing panels
The panels shown need to be removed to perform
some of the maintenance jobs described in this
chapter. Refer to this section each time a panel
needs to be removed and installed.
EBU29531
Panel A
To remove the panel
1. Remove the seat. (See page 4-10.)
2. Remove the fuel tank cap. (See page 4-8.)
3. Remove the bolts.

1. Panel A
2. Panel B
3. Panel C
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2
3

1. Panel D
2. Panel E
3. Panel F
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3

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4. Remove the quick fasteners, and then slide
the panel backward and pull upward.To install the panel
1. Place the panel in the original position, and
then install the quick fasteners.

1. Bolt
1
1

1. Quick fastener
1

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NOTICE

ECB00380
When installing the panel, be sure not to pinch
the cables or wires.
2. Install the bolts.
3. Install the fuel tank cap.
Panels B and D
To remove one of the panels
1. Remove panel A.
2. Pull the panel off.To install one of the panels
1. Place the panel in its original position.
2. Install panel A.
1. Projection
2. Slot
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Panel C
To remove the panel
1. Remove panels A, B and D.
2. Remove the bolts, and then take the panel off.
To install the panel
Place the panel in its original position, and then in-
stall the bolts.
Panel E
To remove the panel1. Remove panel A.
2. Remove the bolts, and then take the panel off.
1. Bolt
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1. Bolt
1
1

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To install the panel
1. Place the panel in the original position and in-
stall the bolts.
2. Install panel A.
Panel F
To remove the panel1. Remove panel E.
2. Remove the bolts, and then take the panel off.
To install the panel1. Place the panel in the original position and in-
stall the bolts.
2. Install panel E.

1. Bolt
1. Bolt
1
1
1
1

1. Bolt
1
1

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EBU29440
Checking the spark plug
The spark plug is an important engine component,
which should be checked periodically, preferably
by a Yamaha dealer. Since heat and deposits will
cause any spark plug to slowly erode, the spark
plug should be removed and checked in accor-
dance with the periodic maintenance and lubrica-
tion chart. In addition, the condition of the spark
plug can reveal the condition of the engine.
The porcelain insulator around the center elec-
trode of the spark plug should be a medium-to-light
tan (the ideal color when the vehicle is ridden nor-
mally). If the spark plug shows a distinctly different
color, the engine could be operating improperly.
Do not attempt to diagnose such problems your-
self. Instead, have a Yamaha dealer check the ve-
hicle.
If a spark plug shows signs of electrode erosion
and excessive carbon or other deposits, it should
be replaced.
Before installing a spark plug, the spark plug gap
should be measured with a wire thickness gaugeand, if necessary, adjusted to specification.
Clean the surface of the spark plug gasket and its
mating surface, and then wipe off any grime from
the spark plug threads.
Specified spark plug:
NGK/CR8E
1. Spark plug gap
Spark plug gap:
0.7–0.8 mm (0.028–0.031 in)
Tightening torque:
Spark plug:
12.5 Nm (1.3 m·kgf, 9.4 ft·lbf)