Yamaha YP125R Service Manual

CYLINDER AND PISTON (YP125R)
5-25
EAS37P1019
CYLINDER AND PISTON (YP125R)
Removing the cylinder and piston
Order Job/Parts to remove Q’ty Remarks
Cylinder head
Refer to “CYLINDER HEAD (YP125R)” on
page 5-7.
1 Timing chain guide (exhaust side) 1
2 Cylinder 1
3 Cylinder gasket 1
4 Dowel pin 2
5 Clip 2
6 Piston pin 1
7Piston 1
8Top ring 1
9 2nd ring 1
10 Oil ring 1
For installation, reverse the removal proce-
dure.
2
4
4
3
5
7
6
5
8
9
10
1
New
New
New
New
E
E
E
7 Nm (0.7 m
•
kgf, 5.1 ft
•
Ibf)
T
.R.

Yamaha YP125R Specifications

General

Engine Type	Liquid-cooled, 4-stroke, SOHC, 4-valve
Bore x Stroke	52.4 mm x 57.9 mm
Fuel System	Fuel Injection
Ignition System	TCI
Transmission	V-Belt Automatic
Front Suspension	Telescopic fork
Rear Suspension	Unit Swing
Front Brake	Hydraulic single disc, Ø267 mm
Starter System	Electric
Rear Tyre	140/70-14M/C 62P (Tubeless)