NOTE
Valve clearance must be checked and adjusted when the engine is cold (at room temperature).
TDC Mark [A] for #1, 4 Pistons Timing Mark [B] (Crankcase Halves Mating Surface)

Valve Clearance
Standard:
Exhaust 0.17
0.22 mm (0.0067
0.0087 in.)
Intake 0.15
0.22 mm (0.0059
0.0087 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]

When positioning #1 piston TDC at the end of the compression stroke:
Intake Valve Clearance of #1 and #3 Cylinders Exhaust Valve Clearance of #1 and #2 Cylinders Measuring Valve [A]

When positioning #4 piston TDC at the end of the compression stroke:
Intake Valve Clearance of #2 and #4 Cylinders Exhaust Valve Clearance of #3 and #4 Cylinders Measuring Valve [A]

If the valve clearance is not within the specified range, first record the clearance, and then adjust it.
Engine Top End
Valve Clearance AdjustmentIntake Air Pressure Sensor #2 Removal
NOTICE
Never drop the intake air pressure sensor #2 especially
on a hard surface. Such a shock to the sensor
can damage it.
Remove:
Air Cleaner Housing (see Air Cleaner Housing Removal
in the Fuel System (DFI) chapter)
Intake Air Pressure Sensor #2 Connector [A]
Remove the intake air ...
Air Intake Solenoid Valve (Service Code 2d, Equipped Models)
Air Intake Solenoid Valve Removal/Installation
Refer to the Air Intake Solenoid Valve Removal/Installation
in the Fuel System (DFI) chapter.
Air Intake Solenoid Valve Inspection
Refer to the Air Intake Solenoid Valve Unit Test in the
Electrical System chapter.
If the air intake ...
Front Wheel Rotation Sensor Wiring Inspection (Service Code b 43)
Disconnect the front wheel rotation sensor lead connector
[A] (see Front Wheel Rotation Sensor Removal in the
Brakes chapter).
Disconnect the KIBS hydraulic unit lead connector (see
KIBS Hydraulic Unit Removal in the Brakes chapter).
Check the wiring continuity of the W lead and ...