HEADS UP!!!

Site upgrade in progress... Core site functions are working, but some non-critical features/functions will be temporarily unavailable while we work to restore them over the next couple of weeks.

Please post any bugs you encounter, but before you do, check to see if it's already listed.

Thanks for your patience while we work to improve the community.

Sign in to follow this  
Followers 0
SEDUCE

starter motor differences for WR

11 posts in this topic

Hi there i am wondering if anyone can tell me are the starter motors different on the WR450's from 03 model to 11 model?

I seen someone selling one that said 03-11 wr450 starter motor and i asked if it would fit a 03 and he said they all the same but when i asked Yamaha they said no they not use your year model one???

and when i looked on the part search it was different part numbers so whats the difference as they look the same.

Also is the wr250 one the same as i also seen someone selling a WR250/450 starter motor,

Share this post


Link to post
Share on other sites

I know any steel framed 03-06 WR450's starter motors are the same/interchangeable, and being as though they share the same motor as 03-11 YFZ450 quads, they should be interchangeable as well (but don't quote me on that)

Share this post


Link to post
Share on other sites

I just spoke to the smartest Yamaha dealer parts manager on the planet (Motoworld, El Cajon, CA, USA). He reconfirmed what I have been told. ALL starter motors for the WR450F 2003 - 2011 are interchangeable.

I didn't ask about quad starters. There was a thread awhile back from a guy in the UK who bought a quad starter, or maybe it was the idler gear for his WR450F and found that the gear on the end of the starter or the gear on the idler had a different number of teeth. This is from memory, I didn't pay much attention and I'm old :thumbsup: . So, a call to your dealer to confirm compatibility of a quad starter and a motorcycle starter would be a prudent thing to do before spending your money.

Share this post


Link to post
Share on other sites

so cant use a yfz starter motor????

Edited by SEDUCE
1 person likes this

Share this post


Link to post
Share on other sites

the quad starter is bigger

Yes I confirmed this is the case... diameter and length are larger and the two mounting bolts will not line up as a result.

Shame too, because it looks like a much more robust unit and maybe won't fail as easily as the WR units do!

Share this post


Link to post
Share on other sites

Yes I confirmed this is the case... diameter and length are larger and the two mounting bolts will not line up as a result.

Shame too, because it looks like a much more robust unit and maybe won't fail as easily as the WR units do!

Did the snout fit and did the spline engage with the torque limiter? Custom brackets can always be fabricated :banghead:

Share this post


Link to post
Share on other sites

Did the snout fit and did the spline engage with the torque limiter? Custom brackets can always be fabricated :banghead:

Yea, I thought of that also but there was a showstopper... I am trying to remember exactly what it was and am drawing a blank...

I believe the issue was the splines were the same, but I believe the snout was different in some way that it would not go into the case properly.

It will come to me later...

Share this post


Link to post
Share on other sites

I held YFZ and WR starters side-by-side at the FSAE competition this last weekend. The bolt hole spacing on the YFZ starter is indeed incompatible with the WR. What we didn't check, unfortunately, was the spline and snout compatibility with the WR.

The Aprilia SXV/RXV 450/550 has a notoriously fragile starter and owners of them have been using the WR450 starter as a replacement when the SXV/RXV brush housing is used. This thread, http://www.apriliaforum.com/forums/showthread.php?232011-Alternative-starter-motor, shows a 2006 R1 starter installed on an SXV/RXV with some custom bracketry. I'm curious how common the WR450 starter spline profile and tooth count is across the Yamaha lineup.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now
Sign in to follow this  
Followers 0