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CHAIN !!!!!


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Hi, just been cleaning my bike ,UK 2018 900 GT, it has done 13,000 miles, and have just found tiny little bits of rubber coming out of about 7 chain links, also found one O ring stuck in chain lube on the Swinging arm....... I only clean the chain with WD40, and use a Top Class chain lube. This is my 42nd bike and never seen this before. Has anyone else had this problem.

Cheers Edgar Jessop.

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Yes the same thing happened to my US 2019 GT. Discovered partially torn and missing o-rings at 4K miles. I bought the bike new in 2020 as a new leftover so Yamaha replaced the chain under warranty last fall. 

I also like you clean my chain regularly with WD-40 and use a good chain lube (Maxima chain wax) so this was very surprising. I also own a 2019 XSR900 that i bought new and has just over 5K miles on it now. I maintain that chain in the same manner and it has never lost an o-ring. 

It seems likely that the US 2019 Tracers got a bad batch of chains at some point. Perhaps the UK 2018's did also. I would be curious if any 2020 Tracer owners have had any chain problems. 

 

2019 Tracer 900 GT. 2019 Yamaha XSR 900. 2002 Buell S3T Thunderbolt. 2016 FJ-09 SOLD.

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5 minutes ago, metallion said:

I would be curious if any 2020 Tracer owners have had any chain problems.

I'm at 13k on mine, no issues. I also don't clean my chain, ever. I know, the horror.

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@edgarjessop12 - That's definitely a sign that the chain is nearing end-of-life.  13K miles isn't horrible for a stock chain on one of these bikes, and as noted above there seems to have been a batch from the factory that were worse than others.   Get a good aftermarket chain as a replacement, and it should last much longer that the OEM component. 

-Scott

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I started losing my O-rings around 3000mi and replaced it at around 10000mi. 

He who dies with the most toys wins.

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Known issue.  Yamaha got a bad batch of chains that were prematurely shedding o-rings.  Mine did this after a few thousand miles.  Replaced the chain and sprockets and all is good.

There is nothing like spending a day riding with friends in the grip of a shared obsession.

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10 hours ago, edgarjessop12 said:

Hi, just been cleaning my bike ,UK 2018 900 GT, it has done 13,000 miles, and have just found tiny little bits of rubber coming out of about 7 chain links, also found one O ring stuck in chain lube on the Swinging arm....... I only clean the chain with WD40, and use a Top Class chain lube. This is my 42nd bike and never seen this before. Has anyone else had this problem.

Cheers Edgar Jessop.

I had links sticking at 12,000 miles. My sprockets were alright, just the chain was CHEAP! Got a new chain since the sprockets were ok. Up at 16,500 now and everything's ok. So look at your sprockets. With 13,000 they should be ok.

Ain't no fun when the rabbit gets the gun!

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I'm wondering if cleaning does more damage than good.

I just liberally spray mine once a tank of gas with Dupont chain lube. 7k miles, still perfect.

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53 minutes ago, peteinpa said:

I'm wondering if cleaning does more damage than good.

I just liberally spray mine once a tank of gas with Dupont chain lube. 7k miles, still perfect.

I wonder the same thing, a seasoned bike mechanic here says to not clean, just lube.  Another thing, the chain from the factory was very sticky and the lube I use (Motul C2) also leaves the chain very tacky/tarry/sticky, instead of just slippery, so I wonder if that stickiness could be somehow slowly tearing the o-rings apart. Its so sticky it almost feels like roof tar on it.  And I wonder if this "bad batch of chains" from Yamaha is actually an issue with the choice of lube when the chain is manufactured.

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I've found MUCH better results from just lubing, never cleaning.  The closest to cleaning I ever get is to just run a rag over the side plates to buff them up.  

The theory is that when you're cleaning - particularly with something like WD40 - is that it penetrates and de-lubes the o-rings.  WD40 in and of itself is an extremely bad lubricant; it's immediately slippery, but quickly dries to be sticky.  But it penetrates and removes grease and oil extremely quickly.  And that's exactly what you don't want to do with a chain.  Add lubricant, wipe off the outside surface to look nice if you like, and you're golden. 

Lube keeps it clean anyways.

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