Honda NU50 User Manual

~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

Honda NU50 Specifications

General

Model	NU50
Category	Scooter
Ignition	CDI
Transmission	Automatic
Final Drive	Belt
Front Brake	Drum
Rear Brake	Drum
Front Tire	2.50-10
Rear Tire	2.50-10
Starting System	Kick start
Rear Suspension	Unit swing
Fuel Capacity	4.5 L