Jonsered Chainsaws

[Real1shepherd]

It's ironic, but it seem like right now on the bay, part's saws are going for decent money(although I think this one went a little high with no clutch cover and suspect runner). Seems the collectors that pay $$$ want them running and everything original there. Hopefully, someone here bought the 590.....did you check out that Houston Jred dealer yet?

Kevin

 

[Chris J.]

It's ironic, but it seem like right now on the bay, part's saws are going for decent money(although I think this one went a little high with no clutch cover and suspect runner). Seems the collectors that pay $$$ want them running and everything original there. Hopefully, someone here bought the 590.....did you check out that Houston Jred dealer yet?

Kevin

I was thinking that the 590 went for a reasonable price, but my view is colored by the fact that around Houston Jred saws are rarer than pregnant virgins.

No, haven't yet been to the shop. It's on the NW side of Houston, I'm on the SE side. Since I'm not currently working on any saws despite having a garage full of projects (long story), I'll drop in when I'm in the area (two birds, one stone).

Looks like it is missing the handle brace as well - or did some of the come without it?

Good eye & good question, I have no idea.

 

[SawTroll]

I am not really sure if all the 590s came with the brace, and all the 490s without it.

 

[WoodDean]

Hello all, I'm working on a Model 90 and wondered if anyone had a parts source.
Would really like to get a piston kit but may be able to get by with just new rings.

Hope someone can help me get this one running again.
Thanks

 

[Real1shepherd]

Hello all, I'm working on a Model 90 and wondered if anyone had a parts source.
Would really like to get a piston kit but may be able to get by with just new rings.

Hope someone can help me get this one running again.
Thanks

No real parts source anymore...I have two 90's. I comb ebay a lot for donors or parts. Piston OE will be nearly impossible....rings are available @Bailey's. Nothing unusual there-54mm. Is the piston itself scored...because you can usually clean them up and re-ring. I have a lot of 80/90 parts, but this last 90 I have I'm going to restore for work and it's going to take much of my stock. I also have a 90 OE piston & ring set...but waited over two yrs to find that. There's been a set of 820/830/80 OE rings for sale on the bay, been there forever but that won't help you on the 90. There are more 80/801 parts floating around than specifically '90' parts but except for the piston & rings, jug, carb intake elbow, air cleaner, top cover, filter cover...they're identical.

All I can really advise is keep looking on the bay...if you're trying to do this on the cheap, good luck. Anymore, you gotta PAY in this hobby. Hit me up for other parts besides the piston and rings. All I can do is say 'no'...nothing lost. Hate to see it done, but if you absolutely had to, you could convert it to 80cc...just because there are more 80 pistons, rings & jugs floating around.

Kevin

 

[Real1shepherd]

Well, finally got that tired, old ebay 80 from the seller. 'Rough' doesn't begin to do it justice. Either they had no access to Jred parts, or refused to use OE parts. Everything that could be jury rigged on this saw is. Every single bolt for the starter assembly is different, for example. The choke knob is off an old lawnmower. Wrong filter cover for the filter that was in there....so they made some sort of adapter and silicon-ed it to filter & cover. Pull handle off a lawnmower. Had a switch in there that was off something larger and then cut the stem off. I'm gonna pull the jug this weekend and see what I find. Not going to bring this one back to life...DEFINITELY a parts saw. If you go by ebay prices, the sum of the good parts already exceed the price paid w/shipping. If you go by CL or garage sale prices...not so good.

Oh and I forgot to mention this...asked him through ebay to wrap the saw in at least some bubble wrap. And to NOT just throw the saw in a cardboard box, loose. Also said to keep the bar, didn't want it. He sent the saw loose in a cardboard box with the bar shoved through the handle. It should have been smashed by the handlers(my luck is bad this way across country), but miraculously it wasn't.

Kevin

 

[WoodDean]

Thanks Kevin, appreciate the baileys tip. I believe I may be able to salvage the piston, I found and bought one OEM ring fro another source.
You wouldn't happen to have a cylinder gasket would you?

 

[Real1shepherd]

Thanks Kevin, appreciate the baileys tip. I believe I may be able to salvage the piston, I found and bought one OEM ring fro another source.
You wouldn't happen to have a cylinder gasket would you?

I might....but probably no more than one. I can cut one identical if you like....providing I can find mine. I'll look this weekend in the garage and see what I have.

Kevin

 

[Real1shepherd]

Thanks Kevin, appreciate the baileys tip. I believe I may be able to salvage the piston, I found and bought one OEM ring fro another source.
You wouldn't happen to have a cylinder gasket would you?

I might....I'll check in the garage this weekend. If I do it's probably just ONE....I can cut one identical if you wish.
http://www.baileysonline.com/Parts/...arna-288-Jonsered-2083-and-Stihl-056-Pair.axd

 

[WoodDean]

Thanks for he link, 54 x 1.5mm. I've also seen the 54 x 1.2mm size and wasn't sure which one to use with out measuring.
Saw this on ebay http://www.ebay.com/itm/290747772560?_trksid=p2055119.m1438.l2649&ssPageName=STRK:MEBIDX:IT
So the 910,920 and 930 must have the same piston as the 90????
Let me see if I can get some pics up soon.

I'll take you up on your gasket offer

 

[Real1shepherd]

Thanks for he link, 54 x 1.5mm. I've also seen the 54 x 1.2mm size and wasn't sure which one to use with out measuring.
Saw this on ebay http://www.ebay.com/itm/290747772560?_trksid=p2055119.m1438.l2649&ssPageName=STRK:MEBIDX:IT
So the 910,920 and 930 must have the same piston as the 90????
Let me see if I can get some pics up soon.

I'll take you up on your gasket offer

For crossing questions, you need to ask Robin(Cantdog) here. Some of the later(post 80/90) saws had thin rings I believe, but I don't have good model knowledge on that. Electrolux bought Jred in the late 70's, left them alone for a few yrs and then started changing everything around....and not for the better. The 910 though(which followed the 80) I do know was a nice saw...used a new one in the woods one day as a 'loaner'. Didn't outperform the 80 I was using as a back-up saw though...just something different and more modern looking/svelte.

It's kinda sorted but...when Electrolux bought Jred, Husky and a few other saw lines, there was some healthy in-house competition at first. For example, Jred had plans for a new 100cc+ saw, but it never happened. But they did have the 910/910E come out which was a very good saw for its size. This evolved into the 920/930 series weren't aren't thought to be as good.

Kevin

 

[WoodDean]

 

[WoodDean]

Thar she is . . . .

 

[WoodDean]

The saw looks to be complete, here's my parts tray. It had a little 16" Winsor bar on it.
The recoil housing was damaged/broken when I got it, but I do have NOS for that.

 

[WoodDean]

The Piston, muffler side. There's a piece of the ring broke off in the groove that being a little stubborn.

 

[WoodDean]

The other side;

 

[Real1shepherd]

Great pics....I dunno about that piston. Clean it up well and see how new rings fit, I guess. Probably needs a small engine, ring groove cleaner. What does the cylinder look like? Looks like most of the parts are there.

Kevin

 

[Cantdog]

Hey Guys!....looks like we got the bigg'uns out!! LOL!! Kevin sorry the 80 isn't better but a dedicated parts saw is a good thing too. Thing is those old 80s and 90s were so tough that they wouldn't die...and as such, took a tremendous amount of beating and wear & tear.....and poorly made repairs.....I have 5 80s I think...in various states of being..... 3 of the five have the same recoil bolt hole issues.....of the other two, one is the one in my sig and the other is on the build list (But it's not lonely!!)

Now..... 90 VS 910E pistons......the pistons are a different part # in the IPLs. However the pistons have the SAME casting #s.......the difference is in the machining of the piston crown....the 90 is a fair amount taller...similar to the 80 piston. The 910 piston is nearly a flat top but not quite....slight crown...rings are the same 54mm X 1.5mm. So what that means is you can run a 910 piston in a 90 but it would have somewhat reduced compression......I have no idea how much....and if considering a 90 piston in a 910 you would do well to check the squish before running it.

I assume that the reason for the difference is mostly fuel related....the 90 came from the 70s with hot leaded fuels and the 910 came from the 80's and needed to run on unleaded crappy gas.

When I get some time I am planning a 910 build starting with NOS 910 cases, NOS electrics, NOS P&C, NOS AV mounts etc and a pile of other NOS parts.....and some used parts from donor saws too...Should be a good one......will do a step by step with pics and post in the main forum...same as the other Jonsereds builds I've done......damn shame all the pics got lost in the hack of the "49SP and 70E Build from Scratch" thread......built three saws at once in that one...LOL!!! Text is still there but hard to follow without the pics. (Spelled Useless).....

LOL Here's a preview of the 910E saw I started with......LOL!!!

 

[Cantdog]

Great pics....I dunno about that piston. Clean it up well and see how new rings fit, I guess. Probably needs a small engine, ring groove cleaner. What does the cylinder look like? Looks like most of the parts are there.

Kevin

Yeah that piston doesn't look bad at all......of course measuring is the only way to really tell but it looks like it would clean up great.....get the piece of ring out of there.....I usually grind a square end on a piece of the old ring for a scraper and clean the ring grooves of all carbon....be very careful to not take any alum from the side of the lands if you can help it. EZ-OFF oven cleaner will soften the carbon and you should be able to remove all of it without damage to the piston. Just from the pics..... looks like you could run that one. Redneck way to check piston wear is, once the P&C are both clean, put the sparkplug in and turn the cyl upside down and drop the piston in the bore with no rings........if it flys to the bottom it has a lot of wear.....if it rather slowly settles down...it's good....LOL!!!

 

[Real1shepherd]

Wow Robin....I always look FWD to your posts...you never disappoint! Yeah, from the pics, the piston just looks dirty...hope it cleans up for him. EZ-OFF works on motorcycle chrome exhausts too...it has no equal. I don't get to the main page much...some of the guys there are pretty combative & argumentative...so please post here that you're documenting the 910 build there, so I can find it. Is there a difference between the 910 and the 910E...is one points and the other electronic...is that it? And then later, what does the EV mean...heated handle?

Due to the reduced size of a cylinder chamber in a chainsaw...I would think that even slight, piston top differences would effect performance.. That's sooooo true about the gas....everything changed for the worse with cheap unleaded gas....now the enemy is ethanol gas. Does that redneck piston check trick really work??? You know I'm going to try this on that sad 80 I just got..

Kevin