Yamaha WR450FB 2012 Owner's Service Manual page 97

•Install the valve lifter and the valve pad in the
correct place.
e. Install the exhaust and intake camshafts,
timing chain and the camshaft caps.
~
,,,. Camshaft cap bolt
~~
10 Nm (1.0 m·kgf, 7.2 ft·lbf)
TIP _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
• Refer to "CAMSHAFT' on page 6-7
• Lubricate the camshaft bearings, camshaft
lobes and camshaft journals.
•First, install the exhaust camshaft.
• Align the camshaft sprocket marks with the
edge of the cylinder head.
• Turn the crankshaft counterclockwise several
full turns to seat the parts.
f. Measure the valve clearance again.
g. If the valve clearance is still out of specifica-
tion, repeat all of the valve clearance adjust-
ment steps until the specified clearance is
obtained.
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6. Install:
• All removed parts
TIP _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
For installation, reverse the removal procedure.
Note the following points.
EAS1DX3082
CLEANING THE AIR FILTER ELEMENT
1. Remove:
•Air filter check hose
TIP _ _ _ _ _ _ _ _ _ _ _ _ _ _
On the bottom of the air filter case is a check
hose. If dust or water or both collects in this
hose, replace the air filter element, clean the air
filter case and air filter check hose.
2. Open the air filter case cover "1 ".
TIP _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
Loosen the quick fastener screw "2" and pull on
it to open the air filter case cover.
3-9
PERIODIC MAINTENANCE
3. Unhook:
•Binder "1"
4. Remove:
• Air filter element
Remove the air filter element from the air fil-
ter element frame.
5. Clean:
• Air filter element
(with solvent)
EWA13020
A
WARNING
Nev!!r use low flash point
solv~r-_t~, ~llch
as
gasoline, to clean the air filter element.
Such solvents may cause a fire or an exolo-
sion.
TIP _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
After cleaning, gently squeeze the air filter ele-
ment to remove the excess solvent.
ECA13430
tlVll1~~~~~~~~
Do not twist the air filter element when
squeezing it.