Yamaha SR400 2014 Service Manual page 196

a. Larger pitch
b. Smaller pitch
4. Install:
• Valve cotter "1"
TIP
Install the valve cotters by compressing the
valve spring with the valve spring compressor
"2".
Valve spring compressor
90890-01253
5. To secure the valve cotters onto the valve
stem, lightly tap the valve tip with a soft-face
hammer.
ECA13800
NOTICE
Hitting the valve tip with excessive force
could damage the valve.
2
2
1
VALVES AND VALVE SPRINGS
5-22