Honda VFR800F 2014 Service Manual page 272

CRAN KS
HAFTiPISTON/CYLI
N D
ER
Clean carbon deposits from
the
piston ring grooves with
a ring that
will
be discarded.
NOTE:
.
Never use a
wire
brush; it
will scratch the groove.
INSPECTION
lnspect
the
following parts
for
scratches,
damage,
abnormal wear, deformation, burning,
or
clogs
in
oil
passages.
-
cylinder
-
piston
-
piston rings
-
piston
pin
-
connecting
rod small end
Measure
each part and
calculate
the
clearance
according
to
CRANKSHAFT/PISTON/CYLINDER
SPECIFICATIONS (page
1
-8).
Replace any part if it
is out of service limit.
PISTON RING INSTALLATION
Clean the
piston ring grooves
thoroughly and install the
piston
rings.
.
Apply engine oil to the piston ring entire surface.
.
Avoid piston and piston ring
damage
during
installation.
.
lnstall the top and second rings with the marked side
facing
up.
-
"R": top ring
[1]
-
"RN": second ring
[2]
.
To install the oil ring
[3],
install the spacer [4]
first,
then install the side rails
[5].
Stagger the piston ring end gaps
120" apart from each
other.
Stagger the
side rail end gaps as shown.
After installation,
the
rings should rotate freely
in
the
ring groove.
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