CYLINDER/PISTON
Push
the
ring
inro
the cylmder with
the top
of
the
Piston 10
be
sure
the ring is squarely
in
rhe
cylinder.
10-8
Measure the piston
pin
bore I
.D.
SERVICE
LIMIT
: 1
9.
03
mm
(0.749 in)
Check the piston pin
for
wear and excessive discol-
oration.
Measure the piston
pin
0 .0.
SERVICE
LIMIT
: 1
8.
98
mm
(0.747 in)
If the
0.0.
is under the service limit, discolored,
or
nearly 30.0 hours
of
running t
ime
have elapsed
(competi
tion
use only). replace
the
piston pin.
Calculate the piston-ta-piston
pin
clearance.
SERVICE
LIMIT
: 0.
04
mm
to.
002
in)
Insert each
piston
ring
into
the
cylinder
and
mea-
sure the ring
end
gap.
SERVICE
LIMITS
:
Top: 0.
45
mrn (0.
018
in)
Oil
(s
ide ra
il
):
0.90
mm
(0.035
in
)
CONNECTING ROD INSPECTION
Measure the connecting rod small end
1.0
.
S
ERVI
CE LIMIT:
19
.
04
mm
(0.750 in)
If the 1.0. is over the service
limit
, replace the crank-
shaft (page 13-14).
Ca
l
cu
late the connecting rod-to-piston
pin
clear-
ance.
SERVICE LIMIT: 0.06
mm
(0.002 in)
CAM
CHAIN TENSIONER LIFTER
INSPECTION
Check
the
cam chain tensioner
lifter
operation:
- The tensioner shaft should
not
go
into
the
body
when
it
is pushed.
- When it is turned
clockwise
with
a screwdriver,
the tensioner shaft
should
be pulled
into
the
body. The shaft
should
spring
out
of
the
body
as
soon
as
the screwdriver is released.
,-.
'
....
, .
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