Yamaha YFZ 2018 Owner's Manual page 36

ECB00091
NOTICE
Never turn an adjusting mechanism beyond
the minimum and maximum settings.
Spring preload
1. Loosen the locknut.
2. Turn the spring preload adjusting nut in direc-
4
tion (a) to increase the spring preload and
thereby harden the suspension. Turn in direc-
tion (b) to decrease the spring preload and
thereby soften the suspension.
(a)
(b)
1. Locknut
2. Spring preload adjusting nut
3. Special wrench
TIP
 The spring preload setting is determined by
measuring distance A, shown in the illustration.
 The shorter distance A is, the greater the spring
preload. The longer distance A is, the lesser the
spring preload.
 Each complete turn of the adjusting nut chang-
es distance A by 1.5 mm (0.06 in).
Spring preload setting:
Minimum (soft):
Distance A = 302.5 mm (11.91 in)
Standard:
Distance A = 293.0 mm (11.54 in)
Maximum (hard):
Distance A = 282.5 mm (11.12 in)
1
2
3
4-12