3. TROUBLESHOOTING
44
Valve Seat Cutter
0.8mm
e)
Make lightly pass with the 45°cutter to remove any
possible burrs at the edges of the seat.
f)
After resurfacing seat, inspect for even valve seating
width. Apply colorant to the valve 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 abrasive to the valve seat face, suitable for
running in when rotating valve seat with valve seat
cutter.
h)
After reassembling, check the valve clearance.
3-4-6 Crankshaft/Piston
①
Removal
a)
Piston
• Install with the maker mark facing upward as
shown.
• Do not interchange the top ring and the second ring (top ring with chrome plated)
• After assembly, check for smooth movement of the piston ring.
• Stagger the piston ring end gaps 120° apart.
