Yamaha YZ450F(Y), Owner'S Manual

Page: 186 / 190

7-8
CHASSIS
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.
REAR SHOCK ABSORBER
SETTING PARTS
• Rear shock spring "1"
[Equal-pitch titanium spring]
[Equal-pitch steel spring]
[Unequal-pitch steel spring]
Install the spring seat "2" to the ti-
tanium spring.
• The unequal-pitch spring is softer in
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-
ing to the color and quantity of I.D.
marks.
• Extent of adjustment (spring pre-
load)
• For the spring preload adjustment,
refer to "ADJUSTING THE REAR
SHOCK ABSORBER SPRING
PRELOAD" in the CHAPTER 3.
• Preload adjusting extent is the
same for the titanium and steel
springs.
Length "a" of standard
shock:
490 mm (19.29 in)
TYPE
SPRI
NG
RAT
E
SPRING
PART
NUMBER
(-22212-)
I.D.
MARK
SOFT
Green/1
4.5 1C3-00 Green/2
Green/3
Red/1
4.7 1C3-10 Red/2
Red/3
Black/1
4.9 1C3-20 Black/2
Black/3
Blue/1
5.1 1C3-30 Blue/2
Blue/3
Yellow/
1
5.3 1C3-40 Yellow/
2
Yellow/
3
1C3-50
(1C3-B0) Pink/1
STD 5.5 Pink/2
Pink/3
White/1
STIFF 5.7 1C3-60 White/2
White/3
TYPE
SPRI
NG
RAT
E
SPRING
PART
NUM-
BER
(-22212-)
I.D.
MARK/
Q'TY
4.3 5UN-00 Brown/1
TYPE
SPRI
NG
RAT
E
(ap-
prox.
)
SPRING
PART
NUM-
BER (-22212-)
I.D.
MARK/
Q'TY
SOFT 4.5 5UN-A0 Green/2
4.7 5UN-B0 Red/2
4.9 5UN-C0 Black/2
5.1 5UN-D0 Blue/2
STIFF
5.3 5UN-E0 Yellow/ 2
5.5 5UN-F0 Pink/2
5.7 5UN-G0 White/2
TYPE
SPRI
NG
RAT
E
SPRING
PART
NUMBER
(-22212-) I.D.
MARK
Maximum Minimum
Position in
which the
spring is turned
in 13 mm (0.51
in) from its free
length.
Position in
which the
spring is turned
in 1.5 mm (0.06
in) from its free
length.