2017 yz250 hole in case

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10/29/2017 6:24 PM
Edited Date/Time: 10/29/2017 6:25 PM

2017 yz250 with 16 hours. Was told the bolt that holds the water pump gear and power valve gear backs out and causes this. Anyone else have this happen ? If so, did yamaha cover it ? Photo

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10/29/2017 7:33 PM

Bummer! Hope Yamy covers it for ya.

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still trying to follow Dad's golden rule..."USE YOUR HEAD FOR SOMETHING MORE THAN A HAT RACK!"
current rides:
'13 250SX
'17 701 Husky

10/29/2017 7:36 PM

Dang.

Had a lot of YZ 250s over the years. Never seen that before.

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10/29/2017 7:40 PM

Damn that sucks. Keep us updated on how yammy deal with this

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10/29/2017 7:49 PM

Had this happen on a brand new 125. I had the bottom end apart before ever starting it though so it was on me.

I’ve never seen something like this happen to a new, stock bike.

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10/29/2017 7:54 PM

Nope. By a new outer case and be done with it.

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10/29/2017 8:22 PM


Yamaha Sport Contact Us

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6555 Katella Avenue
Cypress, CA 90630

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Customer Relations
(800) 962-7926
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I ripped a start from Egypt and I was happy about that.

10/29/2017 10:23 PM

Yes I had that happen to our 15. But never on our 09 Yamaha cover it? Depends on who you know if they warranty it.

But watch out. When They retap the bolt in the crank. The process push the crank over a bit that it cause friction on the bearing and we killed the crank. Really weird.

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10/29/2017 10:31 PM

My 16 did the same thing, As well as my buddies 16. I only had about 20 hours on it. Yamaha said that with the amount of hours I had, I should have replaced the crank twice. So they didn't warranty anything.

Photo

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10/29/2017 10:49 PM

Have a buddy that it happened twice on 2 different YZ250's

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10/29/2017 11:10 PM

I have seen this quite a bit, the case can be welded up with no issues, but the bad part is that the bolt usually damages the thread in the crank. Can all be repaired, just take your time with the thread. I last yz we got, l took the case of and loctite and tightened the bolt before even starting the bike and no problems. Seems to be a bit on the loose side from factory, maybe not every unit, but still common enough.

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10/30/2017 1:19 AM

Lucky13FIST wrote:

My 16 did the same thing, As well as my buddies 16. I only had about 20 hours on it. Yamaha said that with the amount of hours I had, I should have replaced the crank twice. So they didn't warranty anything.

Photo

10 hour cranks bro

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2009 Kawasaki KX450F
2009 Kawasaki KX250F
2002 Suzuki GSXR 600

10/30/2017 1:22 AM
Edited Date/Time: 10/30/2017 1:41 AM

Lucky13FIST wrote:

My 16 did the same thing, As well as my buddies 16. I only had about 20 hours on it. Yamaha said that with the amount of hours I had, I should have replaced the crank twice. So they didn't warranty anything.

Photo

Thats shit. After reading the thread where KTM covered the engine that grenaded at 43 hours and then this reply I will be thinking long and hard about which bike I replace my YZ with.

Just checked the owners manual, says the crank should be inspected every 12.5 hours. That's crazy

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10/30/2017 4:15 AM

Lucky13FIST wrote:

My 16 did the same thing, As well as my buddies 16. I only had about 20 hours on it. Yamaha said that with the amount of hours I had, I should have replaced the crank twice. So they didn't warranty anything.

Photo

Acidreamer wrote:

10 hour cranks bro

Seriously?

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10/30/2017 4:32 AM

My 16 is my 5th yz 250. Just broke 3rd gear at 25 hours. Bummed the rest have been good to me.

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10/30/2017 4:33 AM

But wait, I'm confused. I thought only KTM's had these type of issues!! wink

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10/30/2017 4:52 AM

Lucky13FIST wrote:

My 16 did the same thing, As well as my buddies 16. I only had about 20 hours on it. Yamaha said that with the amount of hours I had, I should have replaced the crank twice. So they didn't warranty anything.

Photo

Acidreamer wrote:

10 hour cranks bro

dafuq!

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Cheers, Crush
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10/30/2017 4:52 AM

dedi684 wrote:

My 16 is my 5th yz 250. Just broke 3rd gear at 25 hours. Bummed the rest have been good to me.

Loved all y YZ 250"s. 99,2000,2001, 2005 &2008. For some reason every newer one I had, the transmissions ate gears faster & faster. I got tired of replacing transmissions.....could not make it through a full season on one tranny. I have never seen the crank drive gear bolt/nut back off.....to the O/p, call Yamaha customer service & be reasonable & respectfull to whoever you speak with, it may take a few conversations, but usually you can work out something to help. I have had to contact Yamaha & Ktm customer service a few times, if the rep does not know how to handle the situation , give them a solution, ex: how about a parts credit at my dealer? How about parts & no labor ect. Something better than nothing....always worked for me....good luck...tell us how you make out....

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10/30/2017 6:58 AM

Not a single person, unless you are a Pro. Maybe not even then, aside from a top end.

Should be able to go at least 40 or 50 hours without opening the motor for the average joe.

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If you're not mixing gas, you're not haulin ass.

10/30/2017 7:21 AM
Edited Date/Time: 10/30/2017 8:00 AM

What? Yamaha really told you that? There is no way that i would accept that as an answer. That is a disgrace.

Did your dealer tell you that or Yamaha USA?

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10/30/2017 7:49 AM

that is BAD..I will never buy a yamaha after seeing that holly shit 12 hours for a crank inspection...Crazy!
..

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10/30/2017 8:13 AM

Lucky13FIST wrote:

My 16 did the same thing, As well as my buddies 16. I only had about 20 hours on it. Yamaha said that with the amount of hours I had, I should have replaced the crank twice. So they didn't warranty anything.

Photo

Acidreamer wrote:

10 hour cranks bro

I think its horse shit that that nut came loose. That nut should have been loctited and torqued from the factory.

Id look at their service manual and see if that nut is a part of the crank inspection.

Also my service manual for an 05 yz250 says inspect every 5 races not replace every 10 hours. Im 90% sure pulling right side cover is not apart of it.
Photo

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2009 Kawasaki KX450F
2009 Kawasaki KX250F
2002 Suzuki GSXR 600

10/30/2017 10:06 AM

Same thing happened to a friend of mine in ohio. 5 hours. Crank bolt backed out. Yamaha covered it. Stay on them.

Photo

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10/30/2017 11:10 AM

you would think Yamaha would cover that. this news spreads faster than good. killing potential buyers.

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If I'm healthy enough to complain. I shouldn't be complaining.

10/30/2017 11:43 AM

We have two 16 KTM 250 SX s with over 200 hours on the original cranks, he's a pro level off-road racer. At one time we thought about switching to Yamahas I dodged a bullet there.

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10/30/2017 12:35 PM

Never seen that before. However, third gear dogs wearing out is a known issue. Yamaha, fix your dang bikes!

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10/30/2017 12:47 PM

I just did the crank and bearings in my 2013. Should I have loctited that bolt? I watched the Rocky Mountain video and used the washer to lock the gear and tighten the bolt.

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10/30/2017 12:52 PM

I use blue locktite on just about everything on the clutch side including the tranny bearing retainers on the inside

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10/30/2017 1:01 PM

I had this happen on a 99 yz250. When I took it apart I found that the output shaft on the crank was too short and the outside gear ( can't remember if it was for the water pump or power valve) was barely splined onto the shaft. If the gear was say 1/4" thick, then it probably had about 1/16" actually splined onto the shaft. I was baffled to say the least, maybe it was designed that way to save weight or something. I was not the first owner so perhaps it was the wrong crank installed on the bike somehow.

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10/30/2017 1:16 PM

dedi684 wrote:

My 16 is my 5th yz 250. Just broke 3rd gear at 25 hours. Bummed the rest have been good to me.

sandman768 wrote:

Loved all y YZ 250"s. 99,2000,2001, 2005 &2008. For some reason every newer one I had, the transmissions ate gears faster & faster. I got tired of replacing transmissions.....could not make it through a full season on one tranny. I have never seen the crank drive gear bolt/nut back off.....to the O/p, call Yamaha customer service & be reasonable & respectfull to whoever you speak with, it may take a few conversations, but usually you can work out something to help. I have had to contact Yamaha & Ktm customer service a few times, if the rep does not know how to handle the situation , give them a solution, ex: how about a parts credit at my dealer? How about parts & no labor ect. Something better than nothing....always worked for me....good luck...tell us how you make out....

So I should get a 350 and a 250sx ( I didn't like my 15) and never look back? That's what I'm thinking smile

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