Preliminary data on woodruff key failures
Posted March 10, 2003 - 05:40 AM
Posted March 10, 2003 - 06:24 AM
A new crank is the only 100% fix.
Posted March 10, 2003 - 07:01 AM
Posted March 10, 2003 - 10:59 AM
I KNEW I SHOULD HAVE KEPT MY 600 FOR A SPARE BIKE.
Posted March 10, 2003 - 11:49 AM
Posted March 10, 2003 - 12:46 PM
Damn just saw that some did. shoot
Posted March 14, 2003 - 04:35 AM
if there is a backfire and the starter mechanism locks the flywheel and the piston still wants to turn the crank, it looks like the key may be failing because the crank is slipping but the flywheel is locked in place because of the starting mechanism
This is what I gathered from the dealer. I think they are masking an all out design flaw, but this could be a "not reading the manual situation brought on by new owner excitement.
Posted March 14, 2003 - 07:42 AM
Since my dealer claims not to know about any broad issue (tho I have not spoken with his Yamaha mechanic yet), I am trying to get the name of the Yamaha rep in the area to see what they say.
Don't know if you guys have seen this for what it's worth: http://www.off-road....50f/tech/tips/.
Posted March 14, 2003 - 03:57 PM
03 WR450F-grey wire mod.,Pro Taper bars,Works connection frame guards,Carbon fiber front & rear disc guards and rear caliper guard.
Posted March 16, 2003 - 10:17 PM
Serial # 1234, Re-torqued at 90 miles, FAILED at 457 miles.
Posted March 17, 2003 - 08:45 AM
Posted March 17, 2003 - 10:51 AM
That sounds like a great idea!Freetown is the 1/2 way point but will have to wait to May to go there.There are more areas up this way to ride before that.Thought I would get my bike back today but it looks more like Fri.Keep in touch ok.
Posted March 18, 2003 - 03:49 PM
Posted March 18, 2003 - 04:52 PM
Posted March 18, 2003 - 05:56 PM
Remember the "Throttle Is Your Friend"
Posted March 18, 2003 - 06:46 PM
I'm new to the forum - been lurking for a while. I have a brand new WR450F (USA Model) and the manual has no inserts, paste overs, stickers, etc.
According to this version of the manual, the correct torque for the rotor nut is 61 ft-lbs (not 47, or 50). This is on page 4-77 of the manual.
Due to weather I have only ridden the bike briefly. I have to admit I'm a little spooked. Methinks I had better have a talk with my service department and Yamaha.
Posted March 19, 2003 - 07:44 AM
If you do a search for woodruff and/or key, you will find a ton of posts.
Welcome to ThumperTalk, you will find a lot of informative info and some entertainment too.
Since you have a US model, I would get any problems in writing with your dealer to avoid "he said" problems later on. 30 days isn't much time but better than the Canadian version 0 days
Posted March 19, 2003 - 08:29 AM
Thanks for the welcome. You're right about the entertainment value. The discussion on cam timings and horsepower was *very* entertaining.
Anyway, I did some phone work today. It took several tries but I finally found a local dealer who has had a WR450 come in with a sheared key. In this case, it was definitely a torque problem. According to the mechanic, the rotor came off with out even using a puller it was so loose.
I spoke to my dealer and while they had not heard about it they were more than willing to check the bike out and retorque the nut for me at no cost.
Posted March 19, 2003 - 09:02 PM