Checking The Cylinder Head - Yamaha e60hmhd Service Manual

CYLINDER HEAD

CHECKING THE CYLINDER HEAD

1. Check:
• Combustion chamber
Carbon deposits
• Water jacket
Mineral deposits/rust
CAUTION
Do not scratch the contacting surfaces of the
cylinder head and cylinder head cover.
2. Measure:
• Cylinder head warpage
(with a straightedge and thickness
gauge)
Out of specification
replace.
Warpage limit:
0.1 mm (0.004 in)
Resurfacing steps:
(1)Place a 400 - 600 grit wet sandpaper on
the surface plate.
(2)Resurface the cylinder head by moving
it in a figure-eight motion along the
sandpaper.
NOTE:
Rotate the cylinder head several times to
ensure an even surface.
5-27
E
Clean.
Clean.
Resurface or