Honda NU50 Shop Manual page 54

~HONDA
~NU50.NU50M
CYLINDER HEAD/CYLINDER/PISTON
Inspect the cylinder bore for wear at three levels in
X and Y directions. Take the minimum figure
measured to determine the cylinder wear.
Avoid the pon area.
SERViCE L1MIT:'40.0S0 mm t1 .5768 in)
CAUT,IO"N"-c_,- - - - ,
The cylinder has UII A or B mark 011 the (:f(l/lk·
I
ras,' mating surface as show1l. II/hell the cylin-
ell'(
is
{O
b.'
r,'placeu Willi
(J
IIt'W olle.
use
(J
I
Cylifldt'f IUlI"iIlK
the sallie //lurk as the uld
Ollt!.
I
Mi!asure the piston 0.0. at a point 4 mm from the
bottom of the skirt and 90
0
to the piston pin hole.
SERVICE LIMIT: 39.900
mm
(1.5709
in)
Calcul<ltc the piston-te-cylinder clearance
SERVICE LIMIT: 0.100 mm (0.0039 in)
Measure Ihe piston pin hole I.D.
SERVICE LIMIT: 10.030 mm (0.3949 in)
Measure the piston pin 0.0.
SERVICE LIMIT: 9.970
mm
(0.3925
in)
Dille of IS5ue: Nov., 1981
€I
HONDA MOTOR CO .• LTD.
PISTON PI N HOLE I.D.
ot
55
PISTON PIN 0.0.
6-5