Replacement cam chain manufacturer models? 2008 sm610

[whizzard]

Anyone out there in Husky land know what the off the shelf DID model is for a replacement cam chain for a 2008 or 2009 Husqvarna SM610?

On ADVrider someone mentioned a DID SCR-0412 SDH 122 link and this is corroborated by a Motor-land pdf on the web... but not conclusive as the year range for the SM610 does not include my model... cross referencing Husky part manuals that are available is not conclusive either.

Thank you great husky deities!

 

[Kyle Tarry]

I know this isn't exactly what you asked, but I just bought a new Husky OEM cam chain for my bike.

I would also be interested to know what (if any) aftermarket options exist!

 

[whizzard]

Yeah, like all OEM crep they like to obscure what the over the counter product is so they can get top dollah. Excerpt below from a DID application chart which can be cross referenced with DID par numbers and Husky models (note a lot of question marks except for the SM/TE610E models):

Here are Husqvarna cam chain part numbers by year for the 610, taken from Husky parts catalogues:

Year Husky Part #
2001(TE) 8B00 58541
2003 8000 58541
2004 8000 58541
2007(ie) 8000 58541
2007 8000 58541
2008 8000 58541


So really I guess I can feel confident that they kept using the same cam chain for many years including my 2008 and the earlier years having the same part number corroborates that along with the document below. I will be ordering a DID SCR-0412 SDH 122 (maybe longer if I'm doing the rivet thing) as it will be quite a bit cheaper where I am. I'll let you know how it goes...

 

[blueknob]

I'm not 100 percent sure, but Tsubaki lists some chains for the husky, from what I can tell Part no. BF05MA 122 might work. this chain was used in a lot of other applications. search the part number and read the threads that show up

 

[whizzard]

Note that upon further research into that document that I pulled the data from, the marketting hype is that the SV is quite longer lived... hmmm. Now I wonder if the stock Husky chain is the stronger SV or the weaker SDH version...

 

[whizzard]

So I finally finished the camchainendectomy and it appears that the DID SCR0412 SV 122 link is compatible.

The one that came off is labelled as a DID SDH, so on my bike at least, it was using the weaker chain. Seems like DID has shifted to using the SV ones, which as far as I can tell from a catalog has vanadium in the pins. Though we'll see how well it fares.

Most everything went as expected though it did take re-reading the manual's recommendations for how to put the cam chain on to get it right.

The gear teeth looked good, but the cam lobe did show alarming signs of wear.

Also the reed valve retainer plate had almost been eaten by the cam chain, seeing as the adjuster was at a nice 12 clicks or so.

Hallmarks of a nearly shadetree mechanic:





Where I live getting a reed retainer is oddly difficult... well if I have to replace the cam shaft...




Is this normal? Seems like not.





In fact it looks like hardened faces sandwiched between other crep.



Hmmm maybe looking for a new shaft while I am at it. At least the valves are way easier to adjust with the whole cooling system off, harness out of the way and both case covers off.

 

[whizzard]

The was only one leftover piece...

Anyone know what this is? No, not the dime. I found it on the ground around the bike while removing the coolant hoses, but it does not go anywhere obvious. It is hollow and has an oily residue inside...

 

[Kenneth Webb]

Looks like an alignment sleeve.

 

[Circus]

That is what I was thinking too -- alignment sleeve for either the left or right side cases maybe?

 

[whizzard]

Hmmm, interesting supposition, though the alignment sleeves on the cases are nearly 10mm. Likewise the alignment sleeves on the cylinder head are much larger. Plus the interior of this think has a small hole on one side and large on on the other.

I am thinking this was a restrictor somewhere between the radiator and overflow tank, or the breather hose and water mump leading to the top of the radiators.

 

[Theo]

At 8.5k miles my camshaft looked like this:

but I didn't replace it because I thought that it was ordinary wear.
Are you sure that that part belongs to the 610?

 

[Kyle Tarry]

Is this normal? Seems like not.

That camshaft does NOT look good. I'd check that the followers are all rolling as they should be. Otherwise, I'd suspect a lubrication failure or debris.

Hard to make a judgement from one picture, but I do not think I would run that camshaft.

 

[Pinepig]

That camshaft does NOT look good. I'd check that the followers are all rolling as they should be. Otherwise, I'd suspect a lubrication failure or debris.

Hard to make a judgement from one picture, but I do not think I would run that camshaft.

There is no way I'd stick that cam back in, the surface hardening is GONE, failure is just a few miles away.

 

[dukepilot]

Looks like it could be a cable ferrule. Might even be off the decomp cable if your bike is so equipped.

 

[whizzard]

Good suggestion Kyle on the followers they are definitely suspect. Lubrication has been topped up and fully syth through my ownership, previous owner had it maintained by the dealer (FWIW).

Theo thank you for the reference pic, damn that seems like a lot of wear for 8.5k miles.

As for the ferrule thing... no luck yet and thank you for all of the suggestions guys.

 

[exvitermini]

Everything still going well with that chain? The OEM has been on backorder for over a month and I'm tired of waiting.

 

[Circus]

So how did you find the D.I.D. catalog with that cam chain? I have been looking and cannot find it. Also where did you purchase and how much $$$?

 

[whizzard]

So the CAM chain replacement went swimmingly well but little did I know there was major drama afoot. I should have heeded the innmates here more carefully. The camshaft is pooched! What you may ask is doing such a good job of it? Well I had not paid close enough attention to the cylinder cover and rocker arms, for if I had I would have seen that one of the roller bearings was totally siezed! This ended up sounding like sh*t was breaking loose and tumbling around in my cylinder head and making a god awful racket. F****NG S**T!

Note to self AND EVERYONE who owns one of these bikes or a KTM: CHECK YOUR MOFO ROCKER ROLLER BEARINGS IF ANY EXCESSIVE VALVE ADJUSTMENTS ARE NEEDED****************************************!!!

Now I know why. Turns out that many KTMs suffer the same issue (coincedentally the replacement bearing was a KTM branded part). Maybe it's part of the takeover tho.

More on that whole saga to come...

To answer your question Circus, I looked high and low on the internet and managed to find a DID application guide in polish. I will try to dig up the link again and have the pdf if necessary. If you look through my posts above and find the one with the table of data, that is a screenshot exerpt of the pdf I am referring to. It was not straight forward and the SDH vs SV thing was surprisingly difficult to find as well. Long story short I was able to compare enough husky models and find an online parts place in NZ that stocked one of the DID chains I could use, it cost roughly $120NZD.

 

[whizzard]

PS- I would post pics, but my camera went on vaction and left me behind... to sooth my ailing Husky... in the freezing rainy hell that is NZ winter. Hopefully the double Rye neat will help.

 

[scoutdriver73]

The was only one leftover piece...

Anyone know what this is? No, not the dime. I found it on the ground around the bike while removing the coolant hoses, but it does not go anywhere obvious. It is hollow and has an oily residue inside...

I know its been a while since you asked, but there are also alignment pins for the water pump housing. If it's too small for the left or right engine covers, its probably from your water pump.

Did you use the husky timing alignment tool when you replaced your cam chain? I'm getting ready to replace cam chain and I did not want to spend the $75 on the husky tool. Was thinking about making my own to bolt on where the husky one does and make my own TDC mark before pulling the chain off. Thoughts?

Thanks