oil filter YAMAHA WR 450F 2007 User Guide

3 - 13
INSP
ADJ
CAUTION:
Do not twist the element when squeezing
the element.
Leaving too much of solvent in the ele-
ment may result in poor starting.
5. Inspect:
Air filter element
Damage → Replace.
6. Apply:
Foam-air-filter oil or equivalent oil to the
element.
NOTE:
Squeeze out the excess oil. Element should
be wet but not dripping.
Wipe off the oil left on the element surface
using a clean dry cloth. (Excess oil in the ele-
ment may adversely affect engine starting.)
7. Install:
Filter guide 1
NOTE:
Align the projection a on filter guide with the
hole b in air filter element.
Apply the lithium soap base grease on the
matching surface c on air filter element.
8. Install:
Air filter element 1
NOTE:
Align the projection a on filter guide with the
hole b in air filter case.
9. Hook:
Binder 1
NOTE:
Hook the binder 1 so that it contacts the filter
guide projections a.
AIR FILTER CLEANING

3 - 16
INSP
ADJ
ENGINE OIL REPLACEMENT
6. Idle the engine more than 10 seconds
while keeping the machine upright. Then
stop the engine and add the oil to the maxi-
mum level.
7. Install:
Oil tank plug
ENGINE OIL REPLACEMENT
1. Start the engine and let it warm up for sev-
eral minutes.
2. Stop the engine and place an oil pan under
the drain bolt.
3. Remove:
Engine guard 1
Oil tank plug 2
Oil filler cap 3
Drain bolt (with gasket) 4
Oil filter drain bolt (O-ring) 5
Drain bolt (with gasket) 6
Drain the crankcase and oil tank of its oil.

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INSP
ADJ
ENGINE OIL REPLACEMENT
4. If the oil filter is to be replaced during this
oil change, remove the following parts and
reinstall them.
5. Install:
Gaskets
Oil filter drain bolt
Drain bolt (crankcase right)
Drain bolt (crankcase left)
6. Fill:
Crankcase
7. Install:
Oil filler cap 1
8. Inspect:
Engine (for oil leaks)
Oil level
Refer to “ENGINE OIL LEVEL INSPEC-
TION”. Replacement steps:
Remove the oil filter cover 1 and oil filter
element 2.
Check the O-rings 3, if cracked or dam-
aged, replace them with a new one.
Install the oil filter element and oil filter
cover.
T R..
Oil filter cover:
10 Nm (1.0 m  kg, 7.2 ft  lb)
Oil quantity:
Periodic oil change:
0.95 L (0.84 Imp qt, 1.00 US qt)
With oil filter replacement:
1.0 L (0.88 Imp qt, 1.06 US qt)
Total amount:
1.2 L (1.06 Imp qt, 1.27 US qt)
New
T R..10 Nm (1.0 m · kg, 7.2 ft · lb)
T R..20 Nm (2.0 m · kg, 14 ft · lb)
T R..20 Nm (2.0 m · kg, 14 ft · lb)

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INSP
ADJ
IDLE SPEED ADJUSTMENT
9. Check:
Oil pressure
Checking steps:
Slightly loosen the oil gallery bolt 1.
Start the engine and keep it idling until oil
starts to seep from the oil gallery bolt. If no
oil comes out after one minute, turn the
engine off so it will not seize.
Check oil passages, oil filter and oil pump
for damage or leakage.
Start the engine after solving the prob-
lem(s) and recheck the oil pressure.
Tighten the oil gallery bolt to specification.
T R..
Oil gallery bolt:
10 Nm (1.0 m  kg, 7.2 ft  lb)
EC35M021
IDLE SPEED ADJUSTMENT
1. Start the engine and thoroughly warm it up.
2. Adjust:
Idle speed
Adjustment steps:
Turn the throttle stop screw 1 until the
specified engine idling speed.
NOTE:
Using a digital engine tachometer for idle
speed adjustment, detect the engine idling
speed by bringing the sensing element c of
the engine tachometer close to the ignition
coil 2.
To increase idle speed
→
Turn the throttle stop screw
1 in
a.
To decrease idle speed
→
Turn the throttle stop screw
1 out
b.
Engine idling speed:
1,750 ~ 1,850 r/min
c2

4 - 59
ENG
OIL FILTER, WATER PUMP AND CRANKCASE COVER
(RIGHT)
OIL FILTER, WATER PUMP AND CRANKCASE COVER (RIGHT)
OIL FILTER, WATER PUMP AND CRANKCASE COVER (RIGHT)
Extent of removal:
1 Oil filter removal
2 Water pump removal
3 Crankcase cover (right) removal
Extent of removal Order Part name Q’ty Remarks
OIL FILTER, WATER PUMP
AND CRANKCASE COVER
(RIGHT) REMOVAL
Preparation for removal Drain the engine oil. Refer to “ENGINE OIL REPLACEMENT”
section in the CHAPTER 3.
Drain the coolant. Refer to “COOLANT REPLACEMENT”
section in the CHAPTER 3.
Exhaust pipe Refer to “EXHAUST PIPE AND
SILENCER” section.
Brake pedal Refer to “ENGINE REMOVAL” section.
Clutch cover Refer to “CLUTCH” section.
1 Oil filter cover 1
2 Oil filter 1
3 Coolant pipe 2 1
4 Water pump housing 1
5Pin 2
6 Oil tank breather hose 1
1
2
3

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ENG
OIL FILTER, WATER PUMP AND CRANKCASE COVER
(RIGHT)
Extent of removal Order Part name Q’ty Remarks
7 Kickstarter 1
8 Crankcase cover (right) 1
9 Gasket 1
10 Dowel pin/O-ring 3/1
11 Impeller 1
Refer to “REMOVAL POINTS”. 12 Plain washer 1
13 Impeller shaft 1
14 Oil seal 1 1
15 Oil seal 2 1
16 Bearing 1
2
2
3

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ENG
OIL FILTER, WATER PUMP AND CRANKCASE COVER
(RIGHT)
REMOVAL POINTS
EC4G3110
Impeller shaft
1. Remove:
Impeller 1
Plain washer 2
Impeller shaft 3
NOTE:
Hold the impeller shaft on its width across the
flats a with spanners, etc. and remove the
impeller.
EC4G3210
Oil seal
NOTE:
It is not necessary to disassemble the water
pump, unless there is an abnormality such as
excessive change in coolant level, discolora-
tion of coolant, or milky transmission oil.
1. Remove:
Bearing 1
Oil seal 2
INSPECTION
EC444200
Impeller shaft
1. Inspect:
Impeller shaft 1
Bend/wear/damage → Replace.
Fur deposits → Clean.

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ENG
OIL FILTER, WATER PUMP AND CRANKCASE COVER
(RIGHT)
EC4H4600
Bearing
1. Inspect:
Bearing
Rotate inner race with a finger.
Rough spot/seizure → Replace.
EC444400
Oil seal
1. Inspect:
Oil seal
Wear/damage → Replace.
ASSEMBLY AND INSTALLATION
EC4G5110
Oil seal
1. Install:
Oil seal 1
NOTE:
Apply the lithium soap base grease on the oil
seal lip.
Install the oil seal with its manufacture’s
marks or numbers facing inward.
Bearing
1. Install:
Bearing 1
NOTE:
Install the bearing by pressing its outer race
parallel.
New

4 - 63
ENG
OIL FILTER, WATER PUMP AND CRANKCASE COVER
(RIGHT)
EC4G5220
Impeller shaft
1. Install:
Impeller shaft 1
Plain washer 2
Impeller 3
NOTE:
Take care so that the oil seal lip is not dam-
aged or the spring does not slip off its posi-
tion.
When installing the impeller shaft, apply the
engine oil on the oil seal lip, bearing and
impeller shaft. And install the shaft while
turning it.
Hold the impeller shaft on its width across
the flats a with spanners, etc. and install the
impeller.
T R..14 Nm (1.4 m · kg, 10 ft · lb)
Crankcase cover (right)
1. Install:
Dowel pin 1
O-ring 2
Collar 3
Gasket 4
New
New
2. Install:
Crankcase cover (right) 1
Bolt 2
Bolt
NOTE:
Apply the engine oil on the impeller shaft
end.
When installing the crankcase cover onto the
crankcase, be sure that the impeller shaft
end 2 aligns with the balancer end slot 3.
Tighten the bolts in stage, using a crisscross
pattern.
T R..12 Nm (1.2 m · kg, 8.7 ft · lb)
T R..10 Nm (1.0 m · kg, 7.2 ft · lb)

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ENG
OIL FILTER, WATER PUMP AND CRANKCASE COVER
(RIGHT)
Kick crank
1. Install:
Kickstarter 1
Plain washer
Bolt (kickstarter)
NOTE:
Install so that there is a clearance a of 8 mm
(0.31 in) or more between the kickstarter and
frame and that the kickstarter does not contact
the crankcase cover when it is pulled.
T R..33 Nm (3.3 m · kg, 24 ft · lb)
2. Install:
Oil tank breather hose 1
Clamp 2
T R..2 Nm (0.2 m · kg, 1.4 ft · lb)
Water pump housing
1. Install:
Dowel pin 1
O-ring 2
New
2. Install:
Water pump housing 1
Bolt (water pump housing) 2
Plain washer 3
Coolant drain bolt 4
T R..10 Nm (1.0 m · kg, 7.2 ft · lb)
New
T R..10 Nm (1.0 m · kg, 7.2 ft · lb)