Honda 88-91 NT650 HAWK GT Serviceanleitung Seite 112

CYLINDER HEAD/VALVES
DISASSEMBLYIINSPECTION
Cylinder head
CAUTION
• A void damaging the gasket surfaces.
Check the spark plug hole and valve areas for cracks.
Check the cylinder head for warpage with the straight edge
and feeler gauge.
SERVICE LIMIT: 0.10 mm (0.004 in)
NOTE
Mark all parts during disassembly so they can be placed
back in their original locations.
Remove the valve spring cotters, retainers, springs, and valves
using a Valve Spring Compressor.
07757-0010000 or
07957-3290001
To prevent loss of tension, do not compress the valve springs
more than necessary to remove the collers.
TOOL:
Valve spring .compressor
CAUTION
Remove the valve stem seals and valve spring seats.
Remove carbon deposits from the combustion chamber.
(3)
VALVE SPRINGS
(4)
VALVE
r
TIERS
Valve springs
Measure the free length of the inner and outer valve springs.
SERVICE LIMITS:
INNER (IN): 36.47 mm (1.436 in)
(EX): 37.51 mm (1.477 in)
OUTER (IN): 40.58 mm (1.598 in)
(EX): 41.25 mm (1.624 in)
Replace the springs as a set if they are shorter than the service
limits.
9-9