Section 02 ENGINE
Subsection 10 (CYLINDER HEAD)
4.
Rocker arm screw not properly tightened
- Retighten screws with recommended torquing
procedure.
5.
Faulty chain tensioner
- Replace chain tensioner.
6.
Chain guide is worn out
- Replace chain guide.
7.
Stretched timing chain or worn out sprocket
- Replace timing chain and sprocket.
8.
Camshaft is worn out
- Check if camshaft radial clearance is out of spec-
ification.
OIL LEAKAGE FROM CYLINDER HEAD
1.
Cylinder head cover gasket is leaking
- Replace cylinder head cover gasket and retighten
screws with recommended torque.
- Check cylinder head cover for cracks or other
damage. Replace if necessary.
2.
Cylinder head cover screws are leaking
- Replace cylinder head cover screws.
3.
Spark plug tube gasket is leaking
- Remove cylinder head cover and replace spark
plug tube gasket.
- Clean spark plug area from oil spillage.
4.
Blow by valve is leaking
- Replace blow by valve O-ring.
5.
Camshaft sensor O-ring is leaking
- Replace camshaft sensor O-ring.
6.
Cylinder head gasket is leaking
- Remove cylinder head and check for damage.
- Replace cylinder head gasket and retighten
screws with recommended torquing procedure.
ENGINE LACKS ACCELERATION OR
POWER
1.
Incorrect camshaft timing adjustment
- Replace damaged components and readjust
camshaft timing.
2.
Intake or exhaust valves are leaking
- Perform ENGINE LEAK TEST.
- Check if valve seats properly in valve seat.
- Repair or replace damaged components.
3.
Broken valve spring(s)
- Replace defective parts.
4.
Broken rocker arm(s)
- Replace defective parts.
PROCEDURES
EXHAUST MANIFOLD
Exhaust Manifold Removal
1. Remove the moving deck. Refer to
BODY
sub-
section.
2. Remove the air intake silencer. Refer to
AIR IN-
TAKE SYSTEM
subsection.
3. Move muffler back. Refer to
EXHAUST SYS-
TEM
subsection.
4. Unscrew the exhaust manifold beginning with
the bottom screws. This will help holding the
manifold while you remove the screws.
smr2008-017-002_a
1. Exhaust manifold screws
5. Remove exhaust manifold.
6. Disconnect cooling hoses from exhaust mani-
fold.
Exhaust Manifold Inspection
Inspect exhaust manifold condition paying atten-
tion for cracks or other damage. Check contact
surfaces and hose. Replace any defective part.
Inspect plane surfaces for warpage. Small defor-
mation can be corrected by grinding surface with
a fine sand paper. Install sand paper on a surface
plate and rub part against oiled sand paper.
Exhaust Manifold Installation
NOTE:
There is no gasket between cylinder block
and exhaust manifold.
Apply
LOCTITE 243 (BLUE) (P/N 293 800 060)
on
threads of exhaust manifold screws.
132
smr2009-025
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