Service Data and Specifications (S.D.S.) - Inspection and Adjustment (Cont'd)
EM-270spec tablePage header tab reads "E". Valve seat machining diameters marked * are for 0.5 mm oversize cylinder head machining.
Inspection and Adjustment (Cont'd)
Valve spring
Valve spring
Free height mm (in)
Value46.70 (1.8386)
Pressure N (kg, lb) at height mm (in) - Standard
Value568.8 (58.0, 127.9) at 30.2 (1.189)
Pressure N (kg, lb) at height mm (in) - Limit
Value521.7 (53.2, 117.3) at 30.2 (1.189)
Out-of-square "S" mm (in)
Value2.0 (0.079)
Valve guide
Valve guide
Valve guide - Outer diameter
Standard12.033 - 12.044 (0.4737 - 0.4742)
Service12.256 - 12.274 (0.4825 - 0.4832)
Valve guide - Inner diameter [Finished size]
Standard7.005 - 7.020 (0.2758 - 0.2764)
Service
Cylinder head valve guide hole diameter
Standard11.970 - 11.988 (0.4713 - 0.4720)
Service12.200 - 12.211 (0.4803 - 0.4807)
Interference fit of valve guide
Standard0.045 - 0.074 (0.0018 - 0.0029)
Service
Valve guide - Stem to guide clearance
Stem to guide clearance - Intake
Standard0.02 - 0.05 (0.0008 - 0.0020)
Max. tolerance0.10 (0.0039)
Stem to guide clearance - Exhaust
Standard0.045 - 0.075 (0.0018 - 0.0030)
Max. tolerance
Valve deflection limit (Dial indicator reading)
Standard0.2 (0.008)
Max. tolerance
Valve seat
NOTE
* Cylinder head machining data for 0.5 (0.020) oversize
Rocker shaft and rocker arm
Rocker shaft and rocker arm
Rocker shaft - Outer diameter
Unit: mm (in)19.979 - 20.000 (0.7866 - 0.7874)
Rocker arm - Inner diameter
Unit: mm (in)20.007 - 20.028 (0.7877 - 0.7885)
Clearance between rocker arm and rocker shaft
Unit: mm (in)0.007 - 0.049 (0.0003 - 0.0019)