Yamaha YP250 Mobility Scooter User Manual


 
4-15
VALVES AND VALVE SPRINGS
ENG
Order Job name/Part name Q’ty Remarks
1
2
3
4
5
6
7
8
Valves and valve springs removal
Cylinder head
Rocker arm, rocker arm shaft
Valve cotters
Spring retainer
Valve spring (inner)
Valve spring (outer)
Valve (intake)
Valve (exhaust)
Valve guide
Spring seat
4
2
2
2
1
1
2
2
Remove the parts in order.
Refer to “CYLINDER HEAD” section.
Refer to “ROCKER ARM SHAFT AND
ROCKER ARMS” section.
Refer to “VALVES AND VALVE SPRINGS
REMOVAL/INSTALLATION” section
Refer to “VALVES AND VALVE
SPRINGS INSTALLATION” section
Reverse the removal procedure for
installation.
VALVES AND VALVE SPRINGS