Yamaha TZ250M1 Owner's Service Manual page 278

SETTING
EC720000
CHASSIS
EC72J001
Chassis setting
How to go about setting the chassis
• Measure the stroke of the front and rear sus-
pension to get an idea of the operation.
• If the time increases, the stroke increases.
• If the tire grip becomes firmer, the stroke
increases.
(On the other hand, the stroke decreases on
rainy weather.)
• Rider's position and posture affect the stroke.
• Be careful not to allow the suspension to bot-
tom out.
• Start the setting with the preload.
Next, go to the damping force adjustment,
and if this not enough, then adjust the
machine height.
(On the side where the machine height is
greater the stroke increases; whereas it
decreases on the side with a smaller machine
height.)
• If the damping force is increased either on the
compression or the expansion side, it results
in less smooth movement, so do not depart
too far from the standard settings.
• Adjust the machine height in an increment of
mm (in).
• If you lose your way while doing the setting,
go back to the standard settings.
• Oil level adjustment in the front fork produces
a greater effect in further stroke than in mid
stroke.
(Increase or decrease the oil level in an
approximately 5~10 mm (0.20~0.39 in) inter-
val.)
7-14
TUN