KTM 2009 250 EXC-F SIX DAYS, Owenrs Manual, Page: 43 / 125

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MAINTENANCE WORK ON CHASSIS AND ENGINE
41
13.10
Checking the riding sag of the shock absorber
400222-10
–
Measure distance

of rear wheel unloaded. ( p. 40)
–
With another person holding the motorcycle, sit on the saddle with full protective
clothing in a normal sitting position (feet on footrests) and bounce up and down a
few times until the rear suspension levels out.
–
The other person now has to measure the distance between the rear axle and a
fixed point.
–
Make a note of the value as measurement

.
Info
The riding sag is the difference between measurements

and

.
–
Check the riding sag.
Riding sag (EXC
‑
F, EXC
‑
F SIX DAYS,
XCF-W)
105 mm (4.13 in)
Riding sag (250 XC-F USA) 112 mm (4.41 in)
Riding sag (250 SX-F EU) 105 mm (4.13 in)
Riding sag (250 SX-F USA) 107 mm (4.21 in)
» If the riding sag differs from the specified measurement:
–
Adjust the riding sag.
x
( p. 42)
13.11
Adjusting the spring preload of the shock absorber
x
Danger
Danger of accidents The shock absorber is under high pressure.
–
The shock absorber is filled with highly compressed nitrogen, so never dismantle the shock absorber or carry out any main-
tenance on it yourself.
Info
Before changing the spring preload, make a note of the present setting, e.g., by measuring the length of the spring.
–
Remove shock absorber.
x
( p. 42)
–
After removing the shock absorber, clean it thoroughly.
400216-10
–
Loosen screw

.
–
Turn adjusting ring

until the spring is no longer under tension.
Combination wrench (50329080000)
Hook wrench (T106S)
–
Measure the overall spring length when not under tension.
–
Tighten the spring by turning adjusting ring

to measurement

.
Guideline
Spring preload (EXC
‑
F,
EXC
‑
F SIX DAYS, XCF-W)
9 mm (0.35 in)
Spring preload (250 XC-F USA) 5 mm (0.2 in)
Spring preload (250 SX-F EU) 6 mm (0.24 in)
Spring preload (250 SX-F USA) 7 mm (0.28 in)
Info
Depending on the static sag and/or the riding sag, it may be necessary to
increase or decrease the spring preload.
–
Tighten screw

.
Guideline
Screw, shock absorber adjusting ring M6 5 Nm (3.7 lbf ft)
–
Install the shock absorber.
x
( p. 42)