03 WR450 Woodruff
Posted October 10, 2010 - 11:22 AM
Posted October 10, 2010 - 01:10 PM
If you look at the starter gear cover, the replacement one is more bulbous than the original 2003 to cater for the new starter clutch mechansim, so it is easy to see if the mod has been done just at a glance.
It is the round cover on the RHS of the picture below the smaller box.
Posted October 10, 2010 - 01:20 PM
Posted October 10, 2010 - 03:10 PM
Posted October 11, 2010 - 02:47 AM
Posted October 11, 2010 - 02:58 AM
...for a 2003 WR450FS...
A WR-450FS is a 2004 model.
A WR-450FR is a 2003 model.
The 10th digit in the VIN that's stamped into the frame's steering head will tell the model year.
If the 10th digit a 3, it's a 2003 model.
If it's a 4, it's a 2004 model.
Posted October 11, 2010 - 07:32 PM
Posted October 11, 2010 - 08:02 PM
A 2003 Yamaha YZ-250 is a YZ-250R.
A 2003 Yamaha PW-50 is a PW-50R.
The reason you see a competition maintenance schedule in that manual is because the WR-450F is marketed and advertised as a bike that can be ridden in off-road competition events.
Edited by YZEtc, October 11, 2010 - 09:45 PM.