Valve Spring Inspection; Valve/Valve Guide Inspection; Service Limits:in - Honda 1988 Z50R Service Manual

VALVE SPRING INSPECTION
'88-'91
Measure the free length of the inner and outer valve springs.
SERVICE LIMITS: INNER : 31.2mm 11.23 in)
OUTER: 34.0 mm 11.34 inl
After '9 1
Measure the free length of the valve springs.
SERVice LIMIT:
31.8mm
11.25
in)
VALVEIVALVE GUIDE INSPECTION
Inspect each valve for trueness, burning , scratches or abnormal
stem wear.
Check the valve movement in the guide.
Measure and record each valve stem 0 .0.
SERVICE lIMITS:IN fex: 4.92 mm 10.194 in)
Ream the valve guides to remove any carbon deposits .
NOTE
Insert the remer from the combustion chamber side of the head
and always rotate the reamer clockwise.
TOOL:
Valve guide reamer, 5.0mm:
07984 - MA6000C
CYLINDER HEAD/vALVES
OUTER
SPRING
~
.,
- - - - , N N E R
SPRING
VALVE GUIDE REAMER
~
=-
-
-
-'-'~""'-- ---J",.lJ
6-9