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
macbrown

2014 siezed with 2 hours

23 posts in this topic

Bought a 2014 yz450f two weeks ago and broke it in for an hour changed the oil, rode another hour and bike seized up, tore it apart and coolant made it into the oil somewhere (oil was super milky)and cam shaft seized against cylinder head. Ordered new camshaft and cylinder head and oil seals for water pump, head gasket was fine, no cracks anywhere. Anyone have a clue what the hells going on?? Yamaha won't do a thing for me

Share this post


Link to post
Share on other sites

I was told no warranty of any kind on competition dirt bikes might be a canadian thing, don't have any pics atm because I work away from home. On top of no warranty the cylinder head is back ordered two weeks. Bikes awesome to ride but kinda second guess it when something like this happens! Makes a guy wonder why there's only a handful of pros riding yamis

Share this post


Link to post
Share on other sites

Not reusing it haha just saying that there was nothing wrong with it and it was not the reason for coolant getting into my oil.

Share this post


Link to post
Share on other sites

All Yamaha dirt bikes have a 30 day limited warranty. Call your dealer and tell them about it.

Even after the 30 days expires they can still goodwill repairs. That is completely up to them and depends on there amount of warranty work.

If they are low on warranty then they might goodwill it. If they are high on warranty repairs then they may not.

Share this post


Link to post
Share on other sites

I took the bike apart because yamaha said there was no warranty, and once I knew the problem yamaha said I would have voided the warranty if there was any, so some one lied to me about the warranty, had I known there was warranty I would not have touched it, and now I'm f7&@3" I'll have to put it back together and take it in I guess, they've seen the damaged parts and I gave them a sample of the oil but yamaha is fighting the fact there is a warranty, I'm gonna take this to the bbb and see if they can help me resolve it. Even the dealer couldn't believe yamaha turned it down.

Share this post


Link to post
Share on other sites

From what I can see in Canada on the yamaha website, the only dirt bikes with warranty are the pw series, TT series and the yz85, everything else you're on your own, the United States could be different.

Share this post


Link to post
Share on other sites

There have been water pump impeller shafts snapping on the 250F. The part # on the 450 impellers are different by one letter (1SL- vs 1SM-)

 

The 250 and 450 both share the same "stopper lever assembly" in the shifting assembly and there have been a few new 250f's with destroyed motors due to the bearing coming apart - http://www.thumpertalk.com/topic/1085485-any-14-mechanicals-out-there-to-report/

Edited by Navaho6

Share this post


Link to post
Share on other sites

The part # on the 450 impellers are different by one letter (1SL- vs 1SM-)

 

 

That means nothing.  The part number on the crank and the piston in either engine is different by one letter, too.  Doubt they're interchangeable, unless you know something I don't.

 

Yamaha uses a "basic number" parts system.  The 5 digit number in the middle of the string describes what the part is.  All water pump impeller shafts are a 12450.  The prefix "1SM" says it's a shaft for a 2014 YZ250F.   The trailing two pairs of characters indicate revisions, alternate sizes, etc.

Share this post


Link to post
Share on other sites

Didn't buy it there but I am from lethbridge so that's who is helping me to try and resolve the problem

Share this post


Link to post
Share on other sites

Ok we'll first off buy a head gasket...no gaskets are reusable and should be replaced! 2nd

Off that totally blows and I would be furious as I am a yami lover.

3rd off you went wrong with the four stroke shoulda got the 250 2 smoke

Share this post


Link to post
Share on other sites

Just got a 14' yz450f and they offered a 2year full Warranty on the engine/trans to protect from manufactur defects cost me $ 400 this isin the uUSA. I paid almost 9k didn't want to tank any chances

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