Yamaha 2011 YZ250 User Manual

7-9
CHASSIS
• Extent of adjustment (spring pre-
load)
For the spring preload adjustment, re-
fer to "ADJUSTING THE REAR
SHOCK ABSORBER SPRING PRE-
LOAD" in the CHAPTER 3.
SPRING
PART
NUMBER
(-22212-)
Maximum Minimum
5UN-00
5UN-10
5UN-20
5UN-30
5UN-40
5UN-50
5UN-60
5UN-70
5UN-A0
5UN-B0
5UN-C0
5UN-D0
5UN-E0
5UN-F0
5UN-G0
Position
in which
the spring
is turned
in 18 mm
(0.71 in)
from its
free
length.
Position
in which
the spring
is turned
in 1.5 mm
(0.06 in)
from its
free
length.

Yamaha 2011 YZ250 Specifications

General

Engine Type	249cc liquid-cooled 2-stroke; reed-valve inducted
Bore x Stroke	66.4mm x 72.0mm
Ignition	CDI
Final Drive	Chain
Brakes / Front	Hydraulic single disc brake, 250mm
Brakes / Rear	Hydraulic single disc brake, 245mm
Tires / Front	80/100-21
Tires / Rear	110/90-19
Seat Height	39.1 in
Wheelbase	58.3 in
Ground Clearance	14.2 in
Fuel Capacity	2.1 gal
Transmission	5-speed
Suspension / Front	11.8-in travel
Suspension / Rear	12.4-in travel
Wet Weight	227 lb
Compression Ratio	8.9:1 - 10.6:1