Valve Seat Refacing - Honda 86-87 TA200 FATCAT Service Manual

CYLINDER HEAD/V ALVES
V ALV E SEAT REFACING
Use a 45 degree cutter to remove any roughness or irregu-
larities from the seat.
NOTE
Ralaee the seat with a 4 5 degree cu tter when a valve guide
is replaced.
Use a 32 degree cutter to remove t he top'
14
of the existing
valve seat material.
Use a 60 degree cutter to remove the bottom 1/4 of t he o ld
seat. Remove the cutter and inspect the area you have
fe f aeed.
Install a 45 degree finish cutter and cut the seat to the proper
widt h . Make sure that all pitting a nd irregularities a re removed.
Refinish if necessary .
6-10
I
, 0 ) ROUGHNESS
~
,
.(
'/
45
0
\
(1) OLD SEAT W IDTH
32 0
11) OLD SEAT WIDTH
1.1
mm
(0.04
in)
45 0