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49sp Jonsereds chainsaw

Discussion in 'Chainsaw' started by Bigwheel, Sep 15, 2003.

  1. Bigwheel

    Bigwheel New Member

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    Hello, I just recently picked up a Jonsereds model 49sp, serial # 132716 chainsaw at a garage sale for $10.00, and know little about this brand of saw except they are suppose to be a good brand. The saw is very clean, great compression, gas is not soured, but it won't fire. There is no spark, so I am getting ready to tear into it, and check & clean the points (I guess it uses points and not an electronic ignition module). The bar is not original, and is a 16" Oregon that appears to have had little use. Hopefully somebody can tell me approx. the age, & also if a 16" bar was the size they came with. Any information i greatly appreciated. Thanks, Lee
     
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  2. glens

    glens Former Member

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    Hi and welcome.&nbsp; There is a chainsaw collector's site which has <a href="http://www.acresinternet.com/cscc.nsf/ed1d619968136da688256af40002b8f7/084bb064dcc6912b88256b69007e2ffa?OpenDocument">this</a> page about that saw.&nbsp; That's about all I can help you with but I'm sure others will be along shortly.

    Glen
     
  3. sedanman

    sedanman Just cut the piano!!

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    Before you rip into it very far, unplug the kill switch, I'll bet it has spark. A lot of people store their equipment with the switch in the off (closed) position, the contacts can "weld" themselves together. The 49SP has points which are nearly impossible to get replacements for. This saw came with either a 16 or 18 inch bar.
    I like a 16 inch bar with .325 round ground chisel chain on my 49SP's.
     
  4. Tony Snyder

    Tony Snyder Addicted to ArboristSite

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    49SPs were standouts on power to weight in the early 80s. I sold a few. I believe the ones I had ahd 16 inch bars with .325 pitch. They seemed to be similair to Partners P500s, but my memory is fuzzy on that.
     
  5. Bigwheel

    Bigwheel New Member

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    Got my 49 sp going, thanks to all!

    Thanks to the ones who repsonded with the good information about my latest find, my Jonsereds 49sp. I had been told by an individual that it had a solid state ignition. Thanks again Paul (sedanman), for steering me in the proper direction, & telling me to check the points. He was correct, it was nothing more than a set of dirty points that needed cleaning. :)
     
  6. Oregon_Rob

    Oregon_Rob AboristSite Guru

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    Dirty points! Dirty Points! I think this now is a clear case of theft and I am going to have to go cry in my beer! You just used up a ten year supply of scroungers luck in one garage sale.:blob2:
     
  7. max2cam

    max2cam AboristSite Guru

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    Back in the early 1980s I watched an old guy use a Jonsered 49 with a lumber maker attachment mill enough aspen logs (popple) to build a BIG log house. The saw was already well used but it still had lots of life. Back then I was using a Homelite 150AO and the Jons. 49 seemed like a REAL saw compared to the little toy I had.

    Seems to me back then Jonsered was the BIG name in chainsaws, at least here in Wisconsin. Now you hardly hear of them...
     
  8. Bigwheel

    Bigwheel New Member

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    What a wealth of knowledge I am getting here! For one thing, I have learned to keep my trusty point file handy, and second of all, I am going to have to get up earlier for the garage sales.
    Hey Max2cam, I like your story about the big house that was built from lumber cut by a Jonsered. Pretty neat, thanks for sharing!
     
  9. 820wards

    820wards Addicted to ArboristSite

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  10. tjhochha

    tjhochha New Member

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    free 49sp Jonsereds chainsaw

    My dad just found one of these on the side of the road with a sign on it "free, runs, needs tune-up" he gave it to me to check out. and let me say. it needed a heck of a lot more than just a tune up. It had sat for who knows how long and i couldn't get the thing to even turn over. I finally figured out how to crack the case and the whole inside of the crank case had corroded. All the steel parts were fine but the magnesium had corroded and flaked off into a sand like substance. I'm glad it wouldn't turn over or it would have ruined it. I cleaned up all the corrosion i could find and got it back together. now i don't have any spark. I broke the wire to the kill switch so it's not a bad switch but i'll check the points Wednesday.
    I'm glad i found this cite. I'd never seen points on a 2-stroke before so i didn't know what to do next. hopefully I will soon have an nice running chainsaw.:chainsawguy:
     
  11. Cantdog

    Cantdog Tree Freak

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    Welcome to the site. As was said (much) earlier the points are NLA for the 49sp so if yours have any life left be careful filing them so as not to remove any more of the depth of the contact than needed to make a nice, even, square mating surface on both contacts. These should be set at 0.014-0.016" when fully open.

    On another note these work ok with one of the $15-$20 points elimination modules sold just about everywhere. I have one 49 with this set up and it starts and runs good. Sounds a tiny bit different running than all the others with points. Not sure why but you would probably not even notice unless directly comparing them running at the same time. Good luck with your project as you can probably tell I kinda like those little guys!!! Good saw.
     
  12. MadMax5578

    MadMax5578 AboristSite Guru

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    Where would one find those modules??
     
  13. Cantdog

    Cantdog Tree Freak

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    Napa or most any small engine shop. Marketed under brand name Atom and others as a "points elimination module". I am sure Lawnmowertech37 (site sponsor) at CM Small Engine has them and Calvin could probably use the business.
     
  14. PB

    PB Addicted to ArboristSite

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    Hey Cantdog, didn't Spike or someone mention that Tilton has all the old ignition parts in their catalog?
     
  15. spike60

    spike60 ArboristSite.com Sponsor

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    Not that many left, and nothing for the 49SP. Best bet is to go with one of those Atom things, and skip the points.
     
  16. PB

    PB Addicted to ArboristSite

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    Gotcha. I was actually looking for the post i was thinking of and got ignitions confused with carbs. :dizzy:

    :cheers:
     
  17. kr5258

    kr5258 AboristSite Guru

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    Back from the dead...

    Funny that you resurrected this old thread. I just finished getting a 49SP dumpster find running, just waiting on a bar and chain now. Here's the proof:

    [​IMG]

    [​IMG]
     
  18. Cantdog

    Cantdog Tree Freak

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    Nice looking 49SP!!!! Good dumpster find Indeed!!! Like Bob said 49SP points are NLA, which is understandable as these were only made for the 49SP while other points sets were made for a variety of saws and are still available from Tiltons. ( I believe) These included the 52, 621, 80, 90 and others.
     
  19. Cantdog

    Cantdog Tree Freak

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    LOLOLOL!! Unless someone has a batch of used but in excellent condition sets...LOLOL!!!! Really if you have a set of these point in good shape they will out last the saw. Funny but true!!! LOL!!! These are NOT high maintenance things as a rule.
     
  20. sirbumpy

    sirbumpy New Member

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    thanks mates

    my 49SP was returned from a local mower shop with the message that "it can't be properly tuned.... the bearings are likely to have worn the casing and it's letting in air"...... well they got it part right.... there was air getting in.... but tightening the cylinder head bolts the exhaust manifold and carby manifold got my lil baby purring like a kitten.......

    always loved that saw.... after reading this thread.... now I know why


    thanks again
     
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