Yamaha YP125R Service Manual

VALVES AND VALVE SPRINGS (YP125R)
5-18
EAS37P1013
VALVES AND VALVE SPRINGS (YP125R)
Removing the valves and valve springs
Order Job/Parts to remove Q’ty Remarks
Cylinder head
Refer to “CYLINDER HEAD (YP125R)” on
page 5-7.
Rocker arms/Camshaft
Refer to “CAMSHAFT (YP125R)” on page
5-14.
1 Valve cotter 8
2 Upper spring seat 4
3 Valve spring 4
4 Intake valve 2
5 Exhaust valve 2
6 Valve stem seal 4
7 Lower spring seat 4
8 Valve guide 4
For installation, reverse the removal proce-
dure.
M
6
6
6
6
1
1
2
2
3
3
7
7
8
5
8
5
8
4
8
4
1
2
3
7
1
2
3
7
New
New
New
New
New
New
New
New
M
M
M
M
M
M
M

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)