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04-16-2014, 09:16 PM,
#16
RE: Intermittent knock
I have what appears to be the same noise. I get it after a long ride 3 or 4 hours. Noise is present in the area of the belt drive front pulley. 2012 v star 950 Tourer 12,800 miles on the bike. Will make the knocking noise in neutral with the engine off pushing the bike forward or backward. First noticed when coming to a stop, it sounded like a rod knocking. The noise is not as loud when pushing the bike in neutral. Bike has had the oil changed approx every 3K miles with Yama-lube 10w-40 and Yamaha filter. It is due for another change here shortly and is still under warranty. Will try to get it to happen for the dealer on Friday.

Anyone else have this problem?
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04-18-2014, 03:29 PM,
#17
RE: Intermittent knock
This doesn't make any sense, but on another board people were describing the same type of noise. At least one person found it to be a loose gas tank...
Maybe one of you will have the same issue.
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04-19-2014, 10:11 AM,
#18
RE: Intermittent knock
(04-16-2014, 09:16 PM)curthenriott Wrote: I have what appears to be the same noise. I get it after a long ride 3 or 4 hours. Noise is present in the area of the belt drive front pulley. 2012 v star 950 Tourer 12,800 miles on the bike. Will make the knocking noise in neutral with the engine off pushing the bike forward or backward. First noticed when coming to a stop, it sounded like a rod knocking. The noise is not as loud when pushing the bike in neutral. Bike has had the oil changed approx every 3K miles with Yama-lube 10w-40 and Yamaha filter. It is due for another change here shortly and is still under warranty. Will try to get it to happen for the dealer on Friday.

Anyone else have this problem?
April 19, 2014 - Took to the dealer no noise it was a cool day so I did not think it would do it. Changed oil and did general check, belt tension etc..When noise is present, engine off, rolling bike forward or backward in neutral, noise is in front drive belt pulley area. Loud click when in neutral rolling the bike at about front pulley speed. Everything is OK so far now have 13,100 on the bike. Will keep everyone updated.
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04-19-2014, 03:37 PM,
#19
RE: Intermittent knock
i had a knock like that....turned out to be my key chain hitting the tank evey now and then so now i use the key alone
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03-03-2016, 11:24 AM,
#20
Intermittent knock
I know this doesn't help, but I have over 5,000 miles on mine now and I do not hear it. But that being said I will keep a ear out for it in case it starts.


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03-04-2016, 12:51 PM, (This post was last modified: 03-04-2016, 01:06 PM by pauli466.)
#21
RE: Intermittent knock
(03-04-2016, 12:05 AM)mwsummers950 Wrote:
(03-03-2016, 11:24 AM)swish24 Wrote: I know this doesn't help, but I have over 5,000 miles on mine now and I do not hear it. But that being said I will keep a ear out for it in case it starts.


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Hi swish24, from what I understand, if you start hearing the noise, you are in trouble already. The independent mechanic also confirmed (without me telling him and without showing him the Clymer manual) that it's one of the most expensive repairs you can encounter on this bike. He quoted 23-25 hours labor, as you have to remove the engine from the bike, tear down the cylinders, and then split the transfer case - just so you can gain access to the countershaft bearings. He is pretty confident that some or all of the bearings are going bad and the countershaft may also have to be removed. Added on top of that, you have to replace ALL the engine gaskets where you split it apart, and there will be many... His worst case estimate was $3200-3800 after all is said and done, and he's only charging $72 an hour. This seems really crazy to me, but he said he had a case where it happened to be this much. Engine rebuild is basically what this is... I called a Yamaha mechanic and told him about the problem, and without telling him what the independent mechanic said, he told me right off the bat that it would take him at least 13-15 hours just to get into the case to see what needed to be replaced.

Good luck with your 950 - keep the tension at the low end of the spec. I'm looking at all my options now. The best route is to just keep riding it and looking for either a good used engine (much less labor) or for the next bike to trade this in on... Maybe a 1300 which doesn't require splitting the transfer case for access to those bearings! (from what I hear, 1300 owners have had the same issue and it only cost around $1500 to fix).

Yamaha engineering at its best!
sounds more like the pulley damper broke off it's mount and is rotating , hence the back and forth knock. a cocked/misaligned pulley/belt could put a lateral load on it and break it. after it breaks it's just a matter of time before the bearing follows suit.. that's why belt alignment and tension is so important. http://www.yamahapartshouse.com/oemparts...se-cover-1 damper 4 part 35 in the image
Lightbulb dumb bikers don't get to be old bikers
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03-07-2016, 01:33 PM, (This post was last modified: 03-07-2016, 01:58 PM by pauli466.)
#22
RE: Intermittent knock
(03-04-2016, 10:14 PM)mwsummers950 Wrote:
(03-04-2016, 12:51 PM)pauli466 Wrote:
(03-04-2016, 12:05 AM)mwsummers950 Wrote:
(03-03-2016, 11:24 AM)swish24 Wrote:
sounds more like the pulley damper broke off it's mount and is rotating , hence the back and forth knock. a cocked/misaligned pulley/belt could put a lateral load on it and break it. after it breaks it's just a matter of time before the bearing follows suit.. that's why belt alignment and tension is so important. http://www.yamahapartshouse.com/oemparts...se-cover-1 damper 4 part 35 in the image
Hi paulie, is this something you've run into?

My sound is definitely in the crankcase, and if you saw the video, the noise occurs when one of the stakings on that nut is top dead center. Also, as I said before, all yammy's I've seen to date have the belt misaligned. It can be seen on their new models on the dealer showroom floor. And with so many 950 / 1300 vstar owners reporting this same problem, I am amazed they have not issued a service bulletin to loosen these belts up. 3-5mm is too tight. Amazes me that they won't do anything about it.
i haven't actually dug into one yet , but it appears the damper can at least be checked before removing an engine. also prying on the pulley should confirm a bad counter shaft bearing. i don't like tearing into engines to search the problem only to find it wasn't necessary and shops sometimes do this at the customers expense. that's why i always ask to see the replaced part, but who knows if that damaged part came from my bike. i once got canned at chevy dealership for telling a customer the truth about a repair that was done. a single mother with kids, those people had no shame. i was glad to leave and work on my own for while. also the video shows that clunk occurring a 180 degree intervals , i'v not seen a bearing do that unless rollers were missing which would allow a lot of lateral shaft movement when prying on it. http://img.photobucket.com/albums/v221/c...0031-1.jpg
Lightbulb dumb bikers don't get to be old bikers
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09-06-2017, 07:10 PM,
#23
RE: Intermittent knock
2014 8oo miles.
ive got the very same tapping noise.
sounds like something hitting case .
I marked front belt sprocket & it taps
at same spot every revolution. With bike
in air I can roll rear tire in reverse&
make the noise but only on full revolution.
If it knocks & I back up it doesn't knock until
I finish a complete revolution. Kinda like
something has to over center. thanks
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