SECTION 4. DISASSEMBLY AND SERVICE
e) Make a light pass with the 45°cutter to remove any
possible burrs at the edges of the seat.
f）After resurfacing seats, inspect for even valve seating.
width Apply colorant to the valve’s tapered face, insert the
valve and press it forcefully several times, be sure the valve
does not rotate on the seat. The seating surface, as shown
by the transferred marking compound, should have good
contact all the way around.
g) Apply the lapping compound to the valve seat face, and
rotate valve lapper to recondition the valve seat.
h) After reassembling, check the valve clearance.
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