Honda EG3600CX Manual page 187

82Z30000.book 6 ページ ２０１０年６月２５日 金曜日 午後５時５０分
CYLINDER HEAD
VALVE SEAT WIDTH
Remove the carbon deposits from the combustion
chamber (page 3-8).
Inspect each valve for face irregularities.
If necessary, replace the valve (page 13-4).
Apply a light coat of Prussian Blue or erasable felt-
tipped marker ink to each valve seat.
Insert the valve, and snap it closed against its seat
several times. Be sure the valve does not rotate on the
seat.
The transferred marking compound will show any area
of the valve face that is not concentric.
Measure the valve seat width of the cylinder head.
STANDARD:
SERVICE LIMIT:
If the measurement is more than the service limit,
recondition the valve seat (page 13-10).
Check whether the valve seat contact area of the valve
is too high.
If the valve seat is too high or too low, recondition the
valve seat (page 13-10).
VALVE GUIDE I.D.
Ream the valve guide (1) to remove any carbon
deposits before measuring.
TOOL:
Valve guide reamer 6.612 mm (2) 07984-ZE20001
Turn the special tool (Valve guide reamer) clockwise,
never counterclockwise.
Continue to rotate the special tool while removing it
from the valve guide.
Measure and record each valve guide I.D.
STANDARD:
SERVICE LIMIT:
If the measured valve guide I.D. is more than the
service limit, replace the valve guide (page 13-8).
13-6
1.0 – 1.2 mm (0.04 – 0.05 in)
2.1. mm (0.08 in)
6.600 – 6.612 mm
(0.2598 – 0.2603 in)
6.66 mm (0.262 in)
VALVE LAPPER
(Commercially
available)
CONTACT TOO HIGH
VALVE SEAT
WIDTH
HANDLE
(Commercially
available)
(2)
COMBUSTION
CHAMBER SIDE
(1)
VALVE SPRING
SIDE