Can I tell by looking if a 2003 WR450 has Starter Gear mod done?
Posted December 11, 2008 - 08:06 AM
Thanks in advance,
Posted December 11, 2008 - 07:19 PM
Posted December 11, 2008 - 07:49 PM
Posted December 11, 2008 - 08:53 PM
Posted December 11, 2008 - 09:35 PM
The TSB calling for Loctite on the fly wheel that Yamaha issued early on was not the fix for the problem. In fact it caused more problems including cracked cases and broken starter idler gear assemblies that are located behind the fly wheel.
The 2003's came from the factory jetted much too lean for most areas of the country. The 2004 model came with probably the best all around jetting specs since the introduction of the 450cc motor in 2003. I suggest that, if you buy the 2003, you jet to the 2004 specifications. I used the 2004 specs on my 2003, 2006 and 2008 WR450's with great performance, excellent gas mileage and the ability to ride from sea level to at least 6,000 ft with good throttle response.
There is a 2004 WR450F in the TT for sale forum under Yamaha parts with a blown engine. This is an opportunity for someone who is mecanically inclined to pick up a year newer bike. You can buy the parts needed and invest your own labor for a one year newer bike at a greatly discounted price.
Posted December 12, 2008 - 05:15 AM
Posted December 12, 2008 - 09:52 AM
I appreciate the responses and will consider doing the upgrade.
I will post a new thread about what to reap from a 2004 "parts bike" to make mine mo' better.
Take a look at the idler gear cover. It's about 2" in diameter just in front of the starter. If the cover is flat the mod has not been done. Mod'd cover is domed. Yamaha will not pay for the upgrade. Look here for more info: http://wr450.com/photos_frame_full.htm