Yamaha YZ125X1 Owner's Service Manual page 155

set length, replace the spring with
an optional one and make readjust-
ment.
SETTING OF SPRING AFTER
REPLACEMENT
After replacement, be sure to adjust
the spring to the set length [sunken
length 90–100 mm (3.5–3.9 in)] and
set it.
1. Use of soft spring
• Set the soft spring for less re-
bound damping to compensate
for its less spring load. Run with
the rebound damping adjuster
one or two clicks on the softer
side and readjust it to suit your
preference.
2. Use of stiff spring
• Set the soft spring for more re-
bound damping to compensate
for its greater spring load. Run
with the rebound damping adjust-
er one or two clicks on the stiffer
side and readjust it to suit your
preference.
Adjusting the rebound damping will
be followed more or less by a change
in the compression damping. For cor-
rection, turn the low compression
damping adjuster on the softer side.
When using a rear shock absorber
other than currently installed, use
the one whose overall length "a"
does not exceed the standard as it
may result in faulty performance.
Never use one whose overall
length is greater than standard.
Length "a" of standard
shock:
490 mm (19.29 in)
REAR SHOCK ABSORBER
SETTING PARTS
• Rear shock spring "1"
[Equal-pitch titanium spring]
SPRING
T SPRI
PART
Y NG I.D.
NUM-
P RAT MARK
BER
E E
(-22212-)
S
O
4.5 1C3-00 Green
F
T
S
T 4.7 1C3-10 Red
D
S 4.9 1C3-20 Black
TI
F
5.1 1C3-30 Blue
F
[Equal-pitch steel spring]
SPRING
T SPRI
PART I.D.
Y NG
NUM- MARK/
P RAT
BER Q'TY
E E
(-22212-)
S
O
4.3 5UN-00 Brown/1 260
F
T
Yellow/
5.3 5UN-50
S 5.5 5UN-60 Pink/1
TI
F
5.7 5UN-70 White/1
F
7-8
[Unequal-pitch steel spring]
SPRI
NG
T
RAT
Y
SPR
E
P
ING
(ap-
E
FRE
prox.
E
)
LEN
S
GTH
O
(ap- 4.5
F
prox
T
.)
4.7
4.9
265
5.1
5.3
265
5.5
S
265
TI
5.7
F
265
F
SPR
Install the spring seat "2" to the ti-
ING
tanium spring.
FRE
E
LEN
• The unequal-pitch spring is softer in
GTH
initial characteristic than the equal-
pitch spring and is difficult to bottom
out under full compression.
• The I.D. mark "a" is marked at the
end of the spring.
• Spring specification varies accord-
260
ing to the color and quantity of I.D.
1
marks.
260
260
CHASSIS
SPR
SPRING
ING
PART I.D.
FRE
NUM- MARK/
E
BER Q'TY
LEN
(-22212-)
GTH
5UN-A0 Green/2 275
5UN-B0 Red/2 275
5UN-C0 Black/2 275
5UN-D0 Blue/2 275
Yellow/
5UN-E0 275
2
5UN-F0 Pink/2 275
5UN-G0 White/2 275