Yamaha YZ250F 2006 User Manual

SPEC
2 - 4
MAINTENANCE SPECIFICATIONS
ENGINE
Item Standard Limit
Cylinder head:
Warp limit ---- 0.05 mm
(0.002 in)
Cylinder:
Bore size 77.00 ~ 77.01 mm
(3.0315 ~ 3.0319 in)
----
Out of round limit ---- 0.05 mm
(0.002 in)
Camshaft:
Drive method Chain drive (Left) ----
Camshaft cap inside diameter 22.000 ~ 22.021 mm
(0.8661 ~ 0.8670 in)
----
Camshaft outside diameter 21.959 ~ 21.972 mm
(0.8645 ~ 0.8650 in)
----
Shaft-to-cap clearance 0.028 ~ 0.062 mm
(0.0011 ~ 0.0024 in)
0.08 mm
(0.003 in)
Cam dimensions
Intake “A” 30.246 ~ 30.346 mm
(1.1908 ~ 1.1947 in)
30.146 mm
(1.1869 in)
“B” 22.45 ~ 22.55 mm
(0.8839 ~ 0.8878 in)
22.35 mm
(0.8799 in)
Exhaust “A” 30.399 ~ 30.499 mm
(1.1968 ~ 1.2007 in)
30.299 mm
(1.1929 in)
“B” 22.45 ~ 22.55 mm
(0.8839 ~ 0.8878 in)
22.35 mm
(0.8799 in)
Camshaft runout limit ---- 0.03 mm
(0.0012 in)
A
B
MAINTENANCE SPECIFICATIONS

Yamaha YZ250F 2006 Specifications

General

Displacement	249cc
Bore x Stroke	77.0mm x 53.6mm
Compression Ratio	12.5:1
Ignition	CDI
Transmission	5-speed
Final Drive	Chain
Front Tire	80/100-21
Rear Tire	100/90-19
Engine Type	Liquid-cooled, 4-stroke, DOHC, 5-valve
Fuel System	Keihin FCR37
Front Suspension	48mm inverted telescopic fork, fully adjustable
Rear Suspension	Fully adjustable monoshock
Front Brake	Hydraulic single disc
Rear Brake	Hydraulic single disc
Dry Weight	204 lbs
Wheelbase	58.1 in
Ground Clearance	14.6 in
Seat Height	995mm (39.2 inches)