VALVE CLEARANCE ADJUSTMENT

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CHECK VALVE CLEARANCE

1. 

   Text in Illustration

   *1	Timing Mark

   Set the No. 1 cylinder to TDC/compression.

   Tech Tips

   
   

   • Make sure that there is free play in the No. 1 cylinder rocker arms and that there is no free play in the No. 4 cylinder rocker arms.

   • If not, turn the crankshaft 1 revolution (360°) to set the No. 1 cylinder to TDC/compression.

2. 

   Text in Illustration

   *1	No. 1 Intake Valve
   *2	No. 3 Exhaust Valve

   Check the valve clearance of the No. 1 cylinder intake valve and the No. 3 cylinder exhaust valve.

   Standard valve clearance (Cold)
   Intake
   0.30 mm (0.0118 in.)
   Exhaust
   0.45 mm (0.0177 in.)

   Note

   Do not apply excessive force to the valve adjusting screw.

   Tech Tips

   If the clearance is not as specified, record the out-of-specification measurement, then adjust the valve clearance.

3. 

   Text in Illustration

   *1	No. 1 Exhaust Valve
   *2	No. 2 Intake Valve

   Check the valve clearance of the No. 1 cylinder exhaust valve and the No. 2 cylinder intake valve.

   Standard valve clearance (Cold)
   Intake
   0.30 mm (0.0118 in.)
   Exhaust
   0.45 mm (0.0177 in.)

   Note

   Do not apply excessive force to the valve adjusting screw.

   Tech Tips

   If the clearance is not as specified, record the out-of-specification measurement, then adjust the valve clearance.

4. 

   Text in Illustration

   *1	Timing Mark

   Turn the crankshaft 360° clockwise to set the No. 4 cylinder to TDC/compression.

   Tech Tips

   
   

   • Make sure that there is free play in the No. 4 cylinder rocker arms and that there is no free play in the No. 1 cylinder rocker arms.

   • If not, turn the crankshaft 1 revolution (360°) to set the No. 4 cylinder to TDC/compression.

5. 

   Text in Illustration

   *1	No. 2 Exhaust Valve
   *2	No. 4 Intake Valve

   Check the valve clearance of the No. 2 cylinder exhaust valve and the No. 4 cylinder intake valve.

   Standard valve clearance (Cold)
   Intake
   0.30 mm (0.0118 in.)
   Exhaust
   0.45 mm (0.0177 in.)

   Note

   Do not apply excessive force to the valve adjusting screw.

   Tech Tips

   If the clearance is not as specified, record the out-of-specification measurement, then adjust the valve clearance.

6. 

   Text in Illustration

   *1	No. 3 Intake Valve
   *2	No. 4 Exhaust Valve

   Check the valve clearance of the No. 3 cylinder intake valve and the No. 4 cylinder exhaust valve.

   Standard valve clearance (Cold)
   Intake
   0.30 mm (0.0118 in.)
   Exhaust
   0.45 mm (0.0177 in.)

   Note

   Do not apply excessive force to the valve adjusting screw.

   Tech Tips

   If the clearance is not as specified, record the out-of-specification measurement, then adjust the valve clearance.

ADJUST VALVE CLEARANCE

1. 

   Text in Illustration

   *a	TDC of No. 1 and No. 4 Cylinder
   *b	TDC of No. 2 and No. 3 Cylinder
   *c	Timing Mark

   Turn the crankshaft clockwise to align the timing mark on the crankshaft pulley with the pointer on the timing gear case.

2. 

   Text in Illustration

   *1	Adjusting Screw
   *2	Feeler Gauge
   *3	Lock Nut

   With each piston positioned at TDC on the compression stroke, using a feeler gauge, adjust each valve clearance.

   Standard valve clearance (Cold)
   Intake
   0.30 mm (0.0118 in.)
   Exhaust
   0.45 mm (0.0177 in.)

   Tech Tips

   The feeler gauge should move with a very slight pull.

3. Loosen the lock nut on the valve rocker arm and loosen the adjusting screw.

4. Insert a 0.30 mm (0.0118 in.) feeler gauge for the intake valve or a 0.45 mm (0.0177 in.) feeler gauge for the exhaust valve between the adjusting screw on the valve rocker arm and the valve bridge.

5. Turn the adjusting screw on the valve rocker arm until the feeler gauge slides with a very slight drag, and lock the adjusting screw with the lock nut.

   Torque:

   29 N*m  { 296 kgf*cm, 21 ft.*lbf }

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