Yamaha TZ250M, Owner'S Service Manual

Page: 279 / 287

SETTING
7-15
EC72M001
Tire and machine’s posture
If a non-designated tire is used, the difference
in radius between the front and the rear tire
may affect the machine’s posture.
To keep the machine in a proper posture,
adjust the front fork top end or seat height.
Basically, with a larger radius tire, lower the
machine’s posture and vice versa.
Example:
If the front tire radius is 1 mm (0.04 in) larger,
lower the front posture by 1 mm (0.04 in) by
increasiry the front fork top end
a
by 1 mm
(0.04 in). If the rear tire radius is 2 mm (0.08 in)
smaller, raise the rear posture by 2 mm (0.08
in) by decreasiry the adjuster set length
b
by
1 mm (0.04 in).
NOTE:
• Find the tire radius by calculating the mea-
sured circumference of the tire.
• A change of 1 mm (0.04 in) in the front fork
top end results in a change of about 1 mm
(0.04 in) in the front posture. A change of 1
mm (0.04 in) in the adjuster set length results
in a change of about 2 mm (0.08 in) in the
rear posture.
TUN
[Front]
*Designated tire
Tire circumference Tire radius Front fork top end
*3.10/4.80 R17
About 1,875 mm (73.8 in) About 298.5 mm (11.8 in) 13 mm (0.51 in)
DUNLOP KR106
120/70 R17
About 1,885 mm (74.2 in) About 300 mm (11.8 in) 11.5 mm (0.45 in)
DUNLOP MR977
Tire
brand
[Rear]
*Designated tire
Tire circumference Tire radius Seat height
*165/55 R17
About 1,975 mm (77.8 in) About 314.5 mm (12.4 in) 24 mm (0.94 in)
DUNLOP KR108
165/50 R17
About 1,957 mm (77.0 in) About 311.5 mm (12.3 in) 25.5 mm (1.00 in)
DUNLOP KR244
Tire
brand