Jonsered 621 crank seals.

[jonsereds 621]

Hello all.
Can someone please tell me where i could find a pair of crank seals for my Jonsered 621, alternatively, the correct dimensions for a replacement as i don't want to rip them out unless i have fresh ones on hand. I'm in the uk.

 

[MnSam]

Try looking around in this sticky:
Jonsered Chainsaws
Lots of good knowledgeable fellas there as well.

 

[andr0373]

I am also looking for crank seals for a jonsered 621. I have almost a dozen of them, most of which run, but some of which have poor idle. After cleaning and fixing carbs, testing compression, and replacing fuel systems this is my next step. I've search around and nobody is selling aftermarket crankseal or bearing kits from what I have found. I'll post up when I find some replacements. On a side note I have been able to remachine some stihl vibration dampeners for these saws which work pretty well.

Update:
The only thread I have found talking about the crank seal sizes and specifications is here, which mentions the original seal might have been 15mm x 26 mm x 4 mm but a 15/26/4 up to 15/26/7 might work. https://www.arboristsite.com/threads/aftermarket-crank-seals.163688/page-2

Here are the part numbers(left crank seal 504 14 62-00 and right crank seal 504 38 65-00). I don't see a difference between the left and right seals, but they are different part numbers. I'll measure and post once I get the saw apart and measure them. http://www.jonsered.ws/621.pdf

Here are nitrile seals that seem to be a size that would fit https://www.zoro.com/dds-shaft-seal-15-x-26-x-7-mm-tc-nitrile-rubber-15267tc/i/G7752020/ for only $6. Otherwise there are a handful of options on ebay for $20 each which is more than I would like to pay for a $150 saw.

 

[Cantdog]

These are the ones I use mostly.....seem to work fine. They are 1mm thicker than stock so install them just flush with the case. 15mm ID...30mm OD and 7mm thick double lip.

 

[sledhead34]

do these work it seems like a big jump from the guy above measurements 26 mm to 30mm wtf These are the ones I use mostly.....seem to work fine. They are 1mm thicker than stock so install them just flush with the case. 15mm ID...30mm OD and 7mm thick double lip.

View attachment 936213

 

[sledhead34]

where did you get these cant dog ,,local sources ??

 

[Modifiedmark]

where did you get these cant dog ,,local sources ??

He gave you the part number and the part number is the size, do a search, go to your NAPA or bearing supply house if you want local.

If you just search the size you will get all kinds of choices in brands and styles.

Otherwise order them here, but you have to minimum order 4. But there only $2.31 a piece.

https://www.mrosupply.com/seals/1459049_15x30x7tc-bx_dichtomatik/

 

[sledhead34]

He gave you the part number and the part number is the size, do a search, go to your NAPA or bearing supply house if you want local.

If you just search the size you will get all kinds of choices in brands and styles.

Otherwise order them here, but you have to minimum order 4. But there only $2.31 a piece.

https://www.mrosupply.com/seals/1459049_15x30x7tc-bx_dichtomatik/

 

[sledhead34]

THIS DUDE EXPLAINED IT GOOD

 

[Cantdog]

He gave you the part number and the part number is the size, do a search, go to your NAPA or bearing supply house if you want local.

If you just search the size you will get all kinds of choices in brands and styles.

Otherwise order them here, but you have to minimum order 4. But there only $2.31 a piece.

https://www.mrosupply.com/seals/1459049_15x30x7tc-bx_dichtomatik/

Yep and those seals will fit every model of true Jonsereds from the 49SP all the way up to the 111S

 

[Modifiedmark]

Yep and those seals will fit every model of true Jonsereds from the 49SP all the way up to the 111S

That reminds me I should put a set of seals in my 930 Super one of these days.

 

[sledhead34]

I am also looking for crank seals for a jonsered 621. I have almost a dozen of them, most of which run, but some of which have poor idle. After cleaning and fixing carbs, testing compression, and replacing fuel systems this is my next step. I've search around and nobody is selling aftermarket crankseal or bearing kits from what I have found. I'll post up when I find some replacements. On a side note I have been able to remachine some stihl vibration dampeners for these saws which work pretty well.

Update:
The only thread I have found talking about the crank seal sizes and specifications is here, which mentions the original seal might have been 15mm x 26 mm x 4 mm but a 15/26/4 up to 15/26/7 might work. https://www.arboristsite.com/threads/aftermarket-crank-seals.163688/page-2

Here are the part numbers(left crank seal 504 14 62-00 and right crank seal 504 38 65-00). I don't see a difference between the left and right seals, but they are different part numbers. I'll measure and post once I get the saw apart and measure them. http://www.jonsered.ws/621.pdf

Here are nitrile seals that seem to be a size that would fit https://www.zoro.com/dds-shaft-seal-15-x-26-x-7-mm-tc-nitrile-rubber-15267tc/i/G7752020/ for only $6. Otherwise there are a handful of options on ebay for $20 each which is more than I would like to pay for a $150 saw.

ok i got the 15x26x7 and its way to small for clutch side

 

[sledhead34]

These are the ones I use mostly.....seem to work fine. They are 1mm thicker than stock so install them just flush with the case. 15mm ID...30mm OD and 7mm thick double lip.

View attachment 936213

 

[sledhead34]

cantdog have you done a 621 are both sides the same because i found some 15x26x7 and there outside dia is way to small for clutch side ,i didn`t tear down the recoil side yet to compare

 

[Cantdog]

cantdog have you done a 621 are both sides the same because i found some 15x26x7 and there outside dia is way to small for clutch side ,i didn`t tear down the recoil side yet to compare

Well of course they're to small..........I posted 15mm X 30mm not 26MM!!! And yes they are the same both sides.

 

[Modifiedmark]

Well of course they're to small..........I posted 15mm X 30mm not 26MM!!! And yes they are the same both sides.

You can tell em, but you can't tell em much. Haha....

 

[Clyde85]

These are the ones I use mostly.....seem to work fine. They are 1mm thicker than stock so install them just flush with the case. 15mm ID...30mm OD and 7mm thick double lip.

View attachment 936213

I was going to suggest you Robin or Kevin, if neither one of you hadn't replied to this thread.

 

[sledhead34]

Well of course they're to small..........I posted 15mm X 30mm not 26MM!!! And yes they are the same both sides.

i know ,but i thought they could be different per side obvious not ,the dude should delete those sizes in his post to stop the confusion

 

[Real1shepherd]

I was going to suggest you Robin or Kevin, if neither one of you hadn't replied to this thread.

Robin even showed a pic of the box;15x30x7mm.

There's only one correct seal size. Internet misinformation/suspicion is not going to get ya there.

Kevin