Yamaha RAPTOR YFM660RP Owner's Manual page 40

3. The length of the spring (installed)
changes 1.5 mm (0.06 in) per turn of the
adjusting nut.
Measurement A:
Installed length:
Minimum (hard):
232 mm (9.1 in)
Standard:
240 mm (9.4 in)
Maximum (soft):
247 mm (9.7 in)
A. Spring length
4. Tighten the locknut to the specified
torque.
Tightening torque:
42 Nm (4.2 m·kgf, 30 ft·lb)
CAUTION:
_
Always tighten the locknut against the
spring adjusting nut and tighten it to the
specified torque.
_
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