Honda EU3000i Handi, Manual

Page: 161 / 194

CYLINDER HEAD
14-6
VALVE GUIDE I.D.
Ream the valve guide (1) to remove any carbon
deposits before measuring.
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.
If the measured valve guide I.D. is more than the
service limit, replace the valve guide (page 14-8).
Inspect the valve stem O.D. with this inspection.
VALVE STEM O.D.
Inspect each valve for bending or abnormal stem wear.
If necessary, replace the valve (page 14-4).
Measure and record each valve stem O.D.
If the measurement is less than the service limit,
replace the valve (page 14-4).
Inspect the valve guide I.D. with this inspection.
GUIDE-TO-STEM CLEARANCE
Subtract each valve stem O.D. from the corresponding
valve guide I.D. to obtain the stem-to-guide clearance.
If the calculated clearance is more than the service limit,
replace the valves (page 14-4) and valve guide.
• Recondition the valve seats whenever the valve
guides are replaced (page 14-8).
TOOL:
Valve guide reamer, 5.510 (2)
07984-2000001
(1)
(2)
COMBUSTION
CHAMBER SIDE:
VALVE SPRING SIDE:
STANDARD: 5.500 – 5.512 mm
(0.2165 – 0.2170 in)
SERVICE LIMIT: 5.572 mm (0.2194 in)
STANDARD:
IN: 5.468 – 5.480 mm (0.2153 – 0.2157 in)
EX: 5.425 – 5.440 mm (0.2136 – 0.2142 in)
SERVICE LIMIT:
IN: 5.318 mm (0.2094 in)
EX: 5.275 mm (0.2077 in)
STANDARD:
IN: 0.020 – 0.044 mm (0.0008 – 0.0017 in)
EX: 0.060 – 0.087 mm (0.0024 – 0.0034 in)
SERVICE LIMIT:
IN: 0.10 mm (0.004 in)
EX: 0.12 mm (0.005 in)