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PERIODIC MAINTENANCE 2-23
Periodic Maintenance Procedures
Engine Top End
Valve Clearance Inspection
NOTE
○
Valve clearance must be checked and adjusted when
the engine is cold (room temperature).
•
Remove:
Crankshaft Sensor Cover (see Crankshaft Sensor Re-
moval in the Electrical System chapter)
Cylinder Head Cover (see Cylinder Head Cover Re-
moval in the Engine Top End chapter)
•
Turn the crankshaft, align the #1, 4 mark on the timing
rotor with the crankcase timing mark.
TDC Mark [A] for #1, 4 Pistons
Timing Mark [B] (Crankcase Halves Mating Surface)
•
Using the thickness gauge [A], measure the valve clear-
ance between the cam and the valve lifter.
Valve Clearance
Standard:
Exhaust
0.22
∼ 0.31 mm (0.0087 ∼ 0.0122 in.)
Intake
0.15
∼ 0.24 mm (0.0059 ∼ 0.0094 in.)
NOTE
○
Thickness gauge is horizontally inserted on the valve
lifter.
Appropriateness [A]
Inadequacy [B]
Thickness Gauge [C]
Horizontally Inserts [D]
Cam [E]
Valve Lifter [F]
Hits the Valve Lifter Ahead [G]
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