Honda CX500 1978 Shop Manual page 70

HONDA
CYLINDER HEADIVALVE
C X 5 0 0
Install a 45 degree finish cut stone and cut the
seat t o the proper width.
If the contact area on the valve face is too low.
the seat must be raised, using a 63.5 degree
stone.
Refinish the seat to 1.1-1.3 mm width using a
45 degree finishing stone.
If the contact area on the face of the valve is
too high. the seat must be lowered, using a 37.5
degree cutting stone.
BOTTOM CUT
%i T -\
OLD SEAT WIDTH
-
TOP CUT
CONTACT
TOO HIGH
OLD SEAT WIDTH
37.5'
6-12
Date of Issue: January, 1978
OHONDA MOTOR CO., LTD.
w.