Yamaha 2010 YZF-R6 Manual Instruction page 58

7. Remove the spring seat upper and preload tube before removing the rod
8. Remove the washer, special nut and spring guide and replace the spring.
NOTICE
When replacing the spring, fit the new spring with the tapered closed end upwards.
Washer
Special nut
Spring guide
– 54 –
.
(SPECIAL TOOL)