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YAMAHA YZ250F(Y) Owner's Service Manual Page 185

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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 steel spring]
SPRING
SPRI
PART
NG
TYPE
NUM-
RAT
BER
E
(-22212-)
SOFT
4.3
5UN-00
4.5
5UN-10
4.7
5UN-20
4.9
5UN-30
5.1
5UN-40
5UN-50
STD
5.3
(5UN-K0)
5.5
5UN-60
STIFF
5.7
5UN-70
[Unequal-pitch steel spring]
SPRI
NG
SPRING
RAT
PART
TYPE
E
NUM-
(ap-
BER
prox.
(-22212-)
)
SOFT
4.5
5UN-A0
4.7
5UN-B0
4.9
5UN-C0
5.1
5UN-D0
5.3
5UN-E0
5.5
5UN-F0
STIFF
5.7
5UN-G0
[Equal-pitch titanium spring]
SPRING
SPRI
PART
NG
TYPE
NUM-
RAT
BER
E
(-22212-)
SOFT
4.5
1C3-00
4.7
1C3-10
4.9
1C3-20
5.1
1C3-30
7-8
SPRI
TYPE
RAT
I.D.
MARK/
Q'TY
Brown/1
Green/1
Red/1
Black/1
Blue/1
STIFF
Yellow/1
Pink/1
Install the spring seat "2" to the ti-
White/1
tanium spring.
• The unequal-pitch spring is softer in
initial characteristic than the equal-
I.D.
pitch spring and is difficult to bottom
MARK/
out under full compression.
Q'TY
• The I.D. mark "a" is marked at the
end of the spring.
• Spring specification varies accord-
Green/2
ing to the color and quantity of I.D.
Red/2
marks.
• In case of using a titanium spring,
Black/2
prepare 2cps. of the Yamaha genu-
Blue/2
ine parts, Spring sheet "2" (1C3-
Yellow/2
22565-00), and attach them on top
and bottom of the spring.
Pink/2
• Install the spring seat with the pro-
White/2
jection "b" brought into contact with
the spring end, as shown.
I.D.
MARK
Green/1
Green/2
Green/3
Red/1
Red/2
Red/3
Black/1
Black/2
Black/3
/1
Blue
/2
Blue
/3
Blue
CHASSIS
SPRING
PART
NG
I.D.
NUM-
MARK
BER
E
(-22212-)
/1
Yellow
5.3
1C3-40
/2
Yellow
/3
Yellow
/1
Pink
5.5
1C3-50
/2
Pink
/3
Pink
/1
White
5.7
1C3-60
/2
White
/3
White

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This manual also for:

Yz250f 2009, Yz250fy 2009

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  • Dave May 30, 2016 02:21:
    Really good really good really goodj