Yamaha VX110 Sport Service Manual page 169

POWR
VALVES AND VALVE SPRINGS
2. Compress the valve spring, and then
install the valve cotter 1 using a thin
screwdriver with a small amount of grease
applied to it.
Valve spring compressor:
YM-01253/90890-04019
Valve spring compressor
attachment:
(for the intake valve):
YM-04114/90890-04114
(for the exhaust valve):
YM-04108/90890-04108
3. Lightly tap the valve spring retainer with a
plastic hammer to set the valve cotter
securely.
NOTE:
Apply engine oil to the valve pads and valve
lifters before installation.
5-70
E