Valve Seat Inspection/Refacing; Valve Seat Grinding - Honda ATC200S Workshop Manual

CYLIND ER HEA D/V A LV ES
VALVE SEAT INSPECTION/ REFACING
VA LVE SEAT INSPECT IONfREFACING
Clea n ali intake and exha ust valves Ihorougy
to remove ca rbo n deposits.
Apply a light coa ti ng of Prussian Blue to eaoch
valve seat. lap each va lve and seat us in g a
rubbe r hose or ot her hand·lapp ing too l.
Remove and inspect each va lve.
Measu re the width of t he valve laC<!.
SERV ICE LIMIT: 2.0 mm (0.08 in)
CAUT ION:
77te tab'e
callnot be ground. If the .. alve
face is brl'ned or hadly wom or if it
COil/acts Ihe seal lI"e" cnly, replace lire
'·a/ve.
Inspect each valve sea l.
If
the seat is too wide, too narrow . Or has low
spots. the seat must be refinished to sea l
prope rlv.
SERVICE LIMIT: 1.5 mm 10.06 in)
VA LVE SEAT GR )ND ING
Honda Valve Sea t Cutters. gr inder or eQuiva·
lent valve sea l relacing equipment are recom·
mended to correct a worn valve sea t.
FO llow the in structions supplied wit h the
Valve Se at Re lacing Equipment.
6-12
VA LV E
CUTTER
72