Camshaft Valve Clearance: Adjustment

Valve lifter thickness calculation: t = t ₁  + (C ₁  - C ₂  ) 

t = Valve lifter thickness to be replaced 

t ₁  = Removed valve lifter thickness 

C ₁  = Measured valve clearance 

C ₂  = Standard valve clearance: 

Intake: 0.30 mm (0.012 in)* 

Exhaust: 0.33 mm (0.013 in)* 

*: Approximately 20 °C (68 °F) 

• Thickness of new valve lifter can be identified by stamp marks on the reverse side (inside the cylinder).
  Fig 2: Identifying Thickness Of Valve Lifter

  Courtesy of SUZUKI OF AMERICA CORP.

  Intake 

  THICKNESS CHART
  
  

  Stamp mark	Thickness
  788U	7.88 mm (0.3102 in)
  790U	7.90 mm (0.3110 in)
  .	.
  .	.
  840U	8.40 mm (0.3307 in)

  Available thickness of valve lifter: 27 sizes with range 7.88 to 8.40 mm (0.3102 to 0.3307 in) in steps of 0.02 mm (0.0008 in) (when manufactured at factory). Refer to [SERVICE DATA AND SPECIFICATIONS ].

  Exhaust 

  THICKNESS CHART
  
  

  Stamp mark	Thickness
  N788	7.88 mm (0.3102 in)
  N790	7.90 mm (0.3110 in)
  .	.
  .	.
  N836	8.36 mm (0.3291 in)

  Available thickness of valve lifter: 25 sizes with range 7.88 to 8.36 mm (0.3102 to 0.3291 in) in steps of 0.02 mm (0.0008 in) (when manufactured at factory). Refer to [SERVICE DATA AND SPECIFICATIONS ].

  CAUTION: Install identification letter at the end and top, "U" and "N", at each of proper positions. (Be careful of mis-installation between intake and exhaust.)