Yamaha YZ250(V) User Manual

4-74
TRANSMISSION, SHIFT CAM AND SHIFT FORK
ENG
EC4H5000
ASSEMBLY AND INSTALLATION
EC4H5242
Transmission
1. Install:
9
5th pinion gear (21T) 1
9
3rd pinion gear (18T) 2
9
Collar 3
9
4th pinion gear (22T) 4
9
2nd pinion gear (15T) 5
To main axle 6.
NOTE:
Apply the molybdenum disulfide oil on the inner
and end surface of the idler gear and on the
inner surface of the sliding gear, then install.
3. Check:
9
Shift fork movement
Unsmooth operation
→ Replace shift fork.
NOTE:
For a malfunctioning shift fork, replace not only
the shift fork itself but the two gears each adja-
cent to the shift fork.
2. Inspect:
9
Shift cam 1
9
Segment 2
Wear/Damage
→ Replace.
EC4H4810
Shift fork, shift cam and segment
1. Inspect:
9
Shift fork 1
Wear/Damage/Scratches → Replace.
1P8-9-31-4C 5/12/05 1:21 PM Page 50

Yamaha YZ250(V) Specifications

General

Displacement	249cc
Ignition	CDI
Final Drive	Chain
Front Tire	80/100-21
Rear Tire	110/90-19
Bore x Stroke	66.4mm x 72.0mm
Fuel System	Keihin PWK38S carburetor
Transmission	5-speed
Front Suspension	Telescopic fork, 11.8 inches travel
Rear Suspension	Swingarm, 12.4 inches travel
Front Brake	Hydraulic single disc
Rear Brake	Hydraulic disc
Seat Height	39.1 inches
Fuel Capacity	2.1 gal
Curb Weight	227 lbs
Width	32.5 in