Jonsered Chainsaws

[Real1shepherd]

Fiberglass gasoline tanks were great until E-Gas......could be made any size cheaply and to fit nicely in weird and unused spaces above and below decks and it got you away from the usual condensation issues that are associated with metal tanks (alum, SS or plain steel).

I thought the black ABS tanks, like they put in trucks now, were the present rulers. Of course those have to be form molded at a factory. I didn't realize the marine industry was so dependent on fiberglass tanks. E-gas is just crap in so many ways....

Gasoline today is like fast food or processed food. I've been watching the once good stuff slowly decline for generations. For all the cost of lives and wars to preserve our right to buy crude....gas could probably be put together on a molecular level and cheaper.

Kevin

 

[Cantdog]

I thought the black ABS tanks, like they put in trucks now, were the present rulers. Of course those have to be form molded at a factory. I didn't realize the marine industry was so dependent on fiberglass tanks. E-gas is just crap in so many ways....

Gasoline today is like fast food or processed food. I've been watching the once good stuff slowly decline for generations. For all the cost of lives and wars to preserve our right to buy crude....gas could probably be put together on a molecular level and cheaper.

Kevin

ABS is more the standard in small massed produced pleasure craft......but in larger glass commercial offshore fishing vessels the fuel tanks used to be built in by the hull finishers to utilize unusable space and balance (trim) the vessel. still are if the motor is diesel but not for gasoline anymore....either plastic or SS or alum for gas..

 

[Real1shepherd]

Got into the 910 today...checked compression and it was a shade under 125psi as I was told. Cleaned up the decomp and that plug on the side....replaced the crush washers...no difference. Pulled the jug off and there's quite a bit of piston scoring on the exhaust side, less on the intake. But just vertical scoring, not heat patches and/or deformation of any kind....skirts look good. This saw hasn't seen a lot of hrs as compared to my commercial saws. Jug looks decent, will polish easily...actually everything is a photo copy of the Husky 2100 I just did inside, but much less wear. Scoring marks in all the same places....no significant wear on the wrist pin.

It does have a weird thing though with the piston....above the wrist pin on one side, there is a l mark above the top ring groove and a ll mark below the bottom ring groove....centered exactly with the wrist pin. They don't continue down the piston, so I'm assuming someone put them there and they're deep....huh? Passed Robin's redneck piston test;dropping the piston in its correct position with the jug inverted.....sinks down really slow. This jug gasket looks way too thick to me...supposed to look like paper I thought and this looks like gasket material. If you get a chance Robin, could you mic the jug gasket for a 910?

I can't believe I'm working on this saw, while my 90 project saw is languishing. Must be the Holiday and the beer....
Hey Dean, if I get this saw saw runnin' do I still win the bet....lol

Kevin

 

[Real1shepherd]

ABS is more the standard in small massed produced pleasure craft......but in larger glass commercial offshore fishing vessels the fuel tanks used to be built in by the hull finishers to utilize unusable space and balance (trim) the vessel. still are if the motor is diesel but not for gasoline anymore....either plastic or SS or alum for gas..

Makes sense to utilize space. Sounds like this probably would drive the price of the boats up....just to use formed plastic, SS , or aluminum...?

 

[Cantdog]

I can get a thickness on a stock gasket for you today.....just from memory I think they are a bit thicker than the older Jonsereds which were real thin....like .007" or so, but that's just memory and perhaps subject to inaccuracies!!!

 

[Real1shepherd]

I can get a thickness on a stock gasket for you today.....just from memory I think they are a bit thicker than the older Jonsereds which were real thin....like .007" or so, but that's just memory and perhaps subject to inaccuracies!!!

Thanks Robin! It's got a nice fat, blue spark....

Kevin

 

[Cantdog]

Thanks Robin! It's got a nice fat, blue spark....

Kevin

That's great Kevin...check the two wires carefully all the way from the module to the coil....the insulation on these gets very hard and brittle. Especially right where the wires goes into either unit. I use marine black "liquid tape" at that intersection. The cyl base gasket is just about the same thickness and material as the other older Jonsereds and measures 0-009-0.010" thick.

 

[WoodDean]

Hey Dean, if I get this saw saw runnin' do I still win the bet....lol

Kevin

Hey!!!! That's right!!! . . . . 90 vs 90 . . . . . . and mine is running and also verified running by a credible, honest, trustworthy source!!!!

 

[Real1shepherd]

That's great Kevin...check the two wires carefully all the way from the module to the coil....the insulation on these gets very hard and brittle. Especially right where the wires goes into either unit. I use marine black "liquid tape" at that intersection. The cyl base gasket is just about the same thickness and material as the other older Jonsereds and measures 0-009-0.010" thick.

Thanks Robin.....already done and traced all the way yesterday. Used the liquid tape on the junction where the modules were...like minds, right?! I wonder if those wires shorting against each other caused these modules to fail in the past?

OK then....the jug gasket on there is WAY too thick. The guy that had the 910E complete gasket set on ebay is looking to see if he has a jug gasket for me. I wasn't sure I was gonna get a 910 back then, so I didn't buy that set and it sold of course.;-)

Kevin

 

[Real1shepherd]

Hey!!!! That's right!!! . . . . 90 vs 90 . . . . . . and mine is running and also verified running by a credible, honest, trustworthy source!!!!

I call foul though.....because YOU didn't finish the 90 yourself....hehe.

Like I said, I don't understand why I'm getting so juiced over this 910E. I hate the plastic handle assembly. Nothing is broken, but the handle halves have warped over time and they don't line up in places. I don't think there is anything I can do about that...maybe judicious use of a heat gun. The chain tensioner is on the clutch cover plate instead of the saw body.....not sure I like that arrangement yet either. The handle bar has a huge-ass AV mount on it that I guess is unobtainium, because I've never seen one for sale.....seems OK though. Interesting saw...gonna put a 32" bar on it and work it right along side the 90....definitely a lighter saw.

Kevin

 

[Cantdog]

Hey!!!! That's right!!! . . . . 90 vs 90 . . . . . . and mine is running and also verified running by a credible, honest, trustworthy source!!!!

LOL Had it running today just before I took the bar off and prepared a nice shipping container...hadn't been started in a week probably....third pull....started and idled perfectly.....just like new...LOL!!

 

[Cantdog]

I call foul though.....because YOU didn't finish the 90 yourself....hehe.

Like I said, I don't understand why I'm getting so juiced over this 910E. I hate the plastic handle assembly. Nothing is broken, but the handle halves have warped over time and they don't line up in places. I don't think there is anything I can do about that...maybe judicious use of a heat gun. The chain tensioner is on the clutch cover plate instead of the saw body.....not sure I like that arrangement yet either. The handle bar has a huge-ass AV mount on it that I guess is unobtainium, because I've never seen one for sale.....seems OK though. Interesting saw...gonna put a 32" bar on it and work it right along side the 90....definitely a lighter saw.

Kevin

I see those plastic trigger handle halves frequently on ebay.....the 910 does not have the body durability of the 80/90 saws...the rear AVs are weak and also unobtainium so try not to hoss it to hard...these are the reasons they came out with the 820/920 and discontinued the 910.

 

[WoodDean]

I call foul though.....because YOU didn't finish the 90 yourself....hehe.

Kevin

ok . . . ok . . . . maybe I did cheat a tiny little bit by using a ringer, but do you blame me considering the competition!!!!

 

[WoodDean]

LOL Had it running today just before I took the bar off and prepared a nice shipping container...hadn't been started in a week probably....third pull....started and idled perfectly.....just like new...LOL!!

24 in Windsor bar, may fell some big oaks here on the property but mostly sawing into large piles of hardwood slabs.
Question: any recommendation on the chain type?

 

[Cantdog]

24 in Windsor bar, may fell some big oaks here on the property but mostly sawing into large piles of hardwood slabs.
Question: any recommendation on the chain type?

I generally use full chisel......but if you're cutting slabs from a mill you might want a chipper chain (round cutter) as they tend to keep an edge longer in bark/grit......much as I hate to admit it Stihl chain performs about the best...but Oregon is good too. You may have to adjust the oiler back a little....I didn't use it enough at any one time to see how oil use matched up with fuel use......it seemed to really put out a lot of oil....I like to be nearly out of oil when the fuel is gone.....I was using 30wt summer oil....

 

[Real1shepherd]

Lol...I adjust the oiler so I run out of oil just before gas...reminds me that I'm about to run outa gas. Nice to have a manual oiler too. Cut a lot of wood and you can just feel the moment your oil is out. Tried runnin' 3/8 comp chain once, didn't last the day. Skip-tooth chisel for me, but it hates to see dirt.

Kevin

 

[Real1shepherd]

I see those plastic trigger handle halves frequently on ebay.....the 910 does not have the body durability of the 80/90 saws...the rear AVs are weak and also unobtainium so try not to hoss it to hard...these are the reasons they came out with the 820/920 and discontinued the 910.

Good advice and I've been warned by others not to really jerk/pull on the handle. Yeah, I don't know what they were thinking with that handle. They certainly didn't get any feedback from loggers when they designed it....probably a weight saving thing. There's a NOS handle assembly on the bay right now for about $70. I dunno....seems like a lot for a bad OE plastic design. Especially if I see it warp just the same five yrs down the road.

Hopefully, the lightness of the saw will remind me that it won't take the abuse of an 80/90.

Kevin

 

[Cantdog]

Good advice and I've been warned by others not to really jerk/pull on the handle. Yeah, I don't know what they were thinking with that handle. They certainly didn't get any feedback from loggers when they designed it....probably a weight saving thing. There's a NOS handle assembly on the bay right now for about $70. I dunno....seems like a lot for a bad OE plastic design. Especially if I see it warp just the same five yrs down the road.

Hopefully, the lightness of the saw will remind me that it won't take the abuse of an 80/90.

Kevin

Well they are ruggeder than they seem, it's mostly just the two lower AV mounts are weak.....I think they are strong enough if you use your head an not you back when cutting...just can't yank them out of a pinch like the older saws.....though a gorilla can ruin those too.. As I said ..."that's one of the main reasons why the 910 was retired and the 820-30 and 920-30 series replaced it".

I like the looks of the 910 better than the others......always hated that Partner designed wraparound trigger...just ugly...and they remind me of those awful 510, 520 etc. etc...but they do work better than the 910 handles....as long as you know the weak points going in you'll be fine....I've never broken a handle or ripped out a mount......but don't cut wood the size you do either..

There is supposed to be a post type limiter on the AV over the clutch cover so you can't easily rip that mount out but some seem to have it some don't ......perhaps the early ones don't and as it became a known problem it was fitted on the later versions. I don't know but have seen them both ways.

The other weird design that I laugh at is the choke ....linkage???? I guess you would call it that......though admittedly I haven't had a stitch of trouble with one.....just a halfazzed rig.....

 

[Real1shepherd]

Well they are ruggeder than they seem, it's mostly just the two lower AV mounts are weak.....I think they are strong enough if you use your head an not you back when cutting...just can't yank them out of a pinch like the older saws.....though a gorilla can ruin those too.. As I said ..."that's one of the main reasons why the 910 was retired and the 820-30 and 920-30 series replaced it".

I like the looks of the 910 better than the others......always hated that Partner designed wraparound trigger...just ugly...and they remind me of those awful 510, 520 etc. etc...but they do work better than the 910 handles....as long as you know the weak points going in you'll be fine....I've never broken a handle or ripped out a mount......but don't cut wood the size you do either..

There is supposed to be a post type limiter on the AV over the clutch cover so you can't easily rip that mount out but some seem to have it some don't ......perhaps the early ones don't and as it became a known problem it was fitted on the later versions. I don't know but have seen them both ways.

The other weird design that I laugh at is the choke ....linkage???? I guess you would call it that......though admittedly I haven't had a stitch of trouble with one.....just a halfazzed rig.....

Yeah, I was gonna try to describe that handle 'limiter', but kind failed at wording it....lol. Damnest thing I ever saw....like they didn't have confidence in the AV design and/or had many complaints. Right, used to seeing a nice plastic pull piece for the choke, but got that weird wire arrangement on this saw. Mine was bent a bit askew, so I straightened it....it has a factory bend in it too, so I left that part. Yrs ago I ripped the handle AV's out of one of my Husky 2100's with a bar pinched.....I'm very careful not to do that anymore. I'll use another saw and some wedges to the rescue. Happens rarely if you're experienced anyway.

And ditto on the 910 looks versus the 920/930.....going in knowing the 910 weak points will help preserve the saw hopefully. That and the cost of replacement parts...lol.


Kevin

 

[taplinhill]

So, I got a catalog for DVD's in the mail yesterday. I was tired last night, so I was resting on the couch and thumbing through this catalog. Not paying much attention to it, I thought I caught a glimpse of a vintage Jonsereds. So I had to go back through the whole thing to find out what I thought was a saw (this has happened before and it turns out to be anything but a saw). Sure enough there is a movie called "Motel Hell" and the cover art had a drawing of a saw, and the style was all Jreds. A quick search on the internet and I found the longest bar ever on a 451E. And the chain is a little on the dull side, too.