Honda PCX150 2014 User Manual

CYLINDER HEADNAlVES
The valves cannot
be ground. If the
valve face is
burned, badly worn
or if it contacts the
seat unevenly,
replace the valve.
10-18
VALVE SEAT INSPECTION/REFACING
INSPECTION
Disassemble the cylinder head (page 10-14
).
Clean the intake and exhaust valves thoroughly to
remove carbon deposits.
Apply a light coat
of Prussian Blue to the valve seats.
Tap the valve against the valve seat several times using
a hand-lapping tool, without rotating the valve to make a
clear pattern.
Remove the valve and inspect the valve seat face.
The valve seat contact should be within the specified
width and even all around the circumference.
STANDARD:
0.90-1.10 mm (0.035- 0.043 in)
SERVICE LIMIT: 1.5 mm (0.06 in)
If the valve seat width
is not within specification, reface
the valve seat.
Inspect the valve seat face for:
• Damaged face:
- Replace the valve and reface the valve seat
• Uneven seat width:
- Bent or collapsed valve stem; Replace the valve
and reface the valve seat
Contact area too low or too high:
- Reface the valve seat
SEAT WIDTH
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Honda PCX150 2014 Specifications

General

Displacement	153cc
Bore x Stroke	58.0mm x 57.9mm
Compression Ratio	10.6:1
Fuel System	PGM-FI electronic fuel injection
Starter	Electric
Transmission	Automatic V-Matic belt drive
Rear Suspension	Twin shock
Rear Brake	Drum
Front Tire	90/90-14
Rear Tire	100/90-14
Wheelbase	51.8 inches
Front Suspension	31mm telescopic fork
Engine Type	Liquid-cooled 4-stroke single
Front Brake	Single 220mm disc with hydraulic two-piston caliper