Chainsaw Repair
Husqvarna - Stihl - Poulan - Jonsered - Dolmar chainsaws and more => Husqvarna => Topic started by: Old Iron Logging on March 03, 2011, 07:25:05 pm
-
Tried to get some torque in this 50.
http://www.youtube.com/watch?v=MNvQxlcZqbs
-
so i have this husky 50 sitting here and it needs a piston. was figuring on putting a stock piston back in as the cylinder is still near perfect and the rest of the saw is in fairly good shape save for the brake handle and clutch shoes.
the saw runs (albeit rattles like a can full of rocks) good, will cut well and still has good power. the piston is WAY WAY worn out, but the engine will still blow 155psi all day long :D just makes alot of slap slap slap sounds when running.
the person i bought it off of for parts said the crank was bad. when i tore it down i found the piston ovaled nearly 18thou and with a good belly half way up the skirts ;D
i "think" it's a45mm'er but the vern. caliper i'm using says i'm just shy of 45mm buy about 1/3 a mm at just above the pin.
of course the piston and cylinder are at home. so i can't check until tonight. same for the serial#.
was bought new in 1989, has that horrible squish the filter to choke mechanism......
sooo, what other top ends will fit on this saw. part numbers would be fantastic! thanks. 8)
-
I had read somewhere that husky 50 had 2 different cyl bolt patterns for early and late. You know anything about this Spike or others? I cant get the pdf file to open that it was in to post for you.
But on the later I think you could put 51 55, 500, 490, 590, 5000, 5000 plus and 325 5500 540 on. Check clearance for the 46mm ones.
IPL for husqvarna 51 55 http://s30387.gridserver.com/partsDiagrams/Husqvarna%2051%20and%2055.pdf
-
i;ll be able to get back to you on sunday ??? still no computer at home :)
i'll get a measurment of the cyl. bolt patern and a good sizing of the piston/cylinder
partner 5000 huh? ;D ;D ;D
-
Some dealers used to put the 5000 top on a husky 50 to make what is called a 50 Magnum.
(Back in the 80's we were selling a Husqvarna 50 Magnum. This saw was created in Charlotte, NC by the Husqvarna Distributor owned by Jim Thompson, The guy that made Husqvarna as far as I'm concerned. They brought in Partner 5000 cylinders and pistons and put them on 50 Rancher (the old white top) saws. These saws were awesome. The first one I received we got out of the box on Thursday and blew the competition out of the water on Saturday at the Races. Back then we had Chainsaw competition's on monthly bases. Husqvarna Sweden made them stop building them in the states. We built some ourselves after they stopped. It was a simple bolt on with no modifying at all. Someday I'll tell you more about the old Husqvarna distributors that made Huqvarna what they are today.)
-
hey cut, know of anybody that has a 5000 topend around?
-
I know a couple guys I traded my NOS and used ones off to already. ;D
I think I only have 3 top ends left and they are on saws right now.
-
thats o.k., i'll give you a couple minutes to go grab one for me ;D
sawtroll figures it is a 45mm. i tend to agree as my vern. was showing the piston slightly bigger than 44mm.
i might just throw a stock piston in it and run it. also needs clutch shoes (they're missing about 1/8"--yes an 1/8" dia). they still grab good but the spool up time is looong. and the brake handle is broken at the top. nothing major. everthing else is in good shape for the amount of use.
-
Well well, isn't this a timely thread. 8) I have a pretty nice 50 gray top that is going to be my next project. It's an '87, so that would make it a 44mm. The switch to the 45 came a couple years later. I wouldn't necessarily assume that the cylinder change coincided exactly with the corresponding change in the case, but I doubt that I'd be able to put the closed port 55 jug on there. But I did want to juice it up somewhat.
What I do have, (and never gave it a thought til reading this thread), is a good Jonsered 490 top end. The 50 is not a bad destination for this jug since I busted off the top mount bolt when taking the 490 apart, so I won't have to screw with drilling it out. :D
I'm going to stick with the goofy choke and filter set up cause I want to stay with the gray top look and besides, that will make it more of a sleeper. Do a compression bump, muff mod. Guess I'll be building myself a 50Magnum.
Not aware of a different bolt pattern for these saws. Maybe something on the earliest white tops? I'll do a little research and see what I can come up with.
-
Here is the info on different bolt patterns. Man I hope this link works. ;D
-
I think the only prob was not a bolt pattern issue but a piston clearance issue with the case.
D
-
hey cut, know of anybody that has a 5000 topend around?
I took another extra 5000 plus 490 top end in. I have one guy inline before you, sent pm so you know.
-
I had read somewhere that husky 50 had 2 different cyl bolt patterns for early and late. You know anything about this Spike or others? I cant get the pdf file to open that it was in to post for you.
......
I have a paper copy of a SB from 1990, that tells the change happened 1989 week 19, at serial 9190006. The new version was called 50 Special, and had a 45mm top end.
-
It's in that link above with pics too.
MODEL: 50 SPECIAL REPLACES 50 RANCHER FROM SERIAL NUMBER 9190006
The differences between the model 50 S and 50 R are among other things that the displacement
is increased from 49 cm3 to 51 cm3 and that the SA-silencer is replaced.
Due to the changes above, the 50 Special has gone through a for each country new specific
testing procedure. This means that no 51 cm3 cylinders should be mounted on saws with
lower serial number than 9190006.
The 51 cm3 cylinder base does not fit the crankcases of older 50 R models.
•
•
•
•
The 51 cm3 cylinder base has the outer diameter of approx. 49,7 mm (the outer diameter
of the piston = 45 mm).
The 49 cm3 cylinder base has the outer diameter of approx. 47,9 mm (the outer diameter
of the piston = 44 mm)
The inner diameter of the new crankcase is approx. 50,5 mm (this crankcase is identified
with the improvement code F)
The inner diameter on the old crankcase is approx. 48,5 mm
Old crankcase New crankcase (F)
2: X 90.111-26 7.6 01-90
-
hey cut, know of anybody that has a 5000 topend around?
I took another extra 5000 plus 490 top end in. I have one guy inline before you, sent pm so you know.
kevin, thanks for the info on the different sizes. 8)
didn't see any p.m. from you on the cylinder though. ;D
yep i looked. it is a 45mm case so i guess this is a go for me.
if i don't end up with a good 5000p/490 top i'll buy that 46mm 51/55 top from bailey's and run it. :)
-
Well, I built my 50Magnum last night using the 490 top end. Kinda sorta. I'll try to get some pics posted during the week.
The 50 bottom I had turned out to be unuseable, so I went with a 55Rancher chassis that I had and moved the 50's externals over to get the earlier look. I bagged the idea of using the 50's choke and filter set up, as the 55's was right there on the bench. Decided to just modify the gray top to clear the choke lever and air filter. Going to give it a run today and see what she does.
Also did a little research at the store on all of these different cylinders yesterday morning. It seems that I may have gotten the last, or at least one of the last closed port 55 cylinders from Husky a couple weeks ago. (it's going on a cosmetically perfect 55 I have.) I entered the same part number into web order and it got superceded up to the open port 55 set. So, we may have seen the last of them.
-
I bagged the idea of using the 50's choke and filter set up, as the 55's was right there on the bench. Decided to just modify the gray top to clear the choke lever and air filter. Going to give it a run today and see what she does.
good call. the filter/choke set up was always a crap design imo. you could never trust the filter to flex back and seal properly. and sometimes it would just move itself right off the mount letting in all sorts of junk. then if it was doing it's job some people had the problem of the filter bring pulled into the carb and choking it at full throttle.
-
I bagged the idea of using the 50's choke and filter set up, as the 55's was right there on the bench. Decided to just modify the gray top to clear the choke lever and air filter. Going to give it a run today and see what she does.
good call. the filter/choke set up was always a crap design imo. you could never trust the filter to flex back and seal properly. and sometimes it would just move itself right off the mount letting in all sorts of junk. then if it was doing it's job some people had the problem of the filter bring pulled into the carb and choking it at full throttle.
Everything you said, plus I realized that building it on the 55 I wouldn't have a throttle lock unless I swapped tanks or trigger assemblies. And I also knew that the 55 carb was fine, but had no idea about the carb that was on the 50.
What you said about the 50's setup is dead on. I think that the flexibility of that air filter was only correct for a certain period of time. New, they were a little too stiff; they'd be OK for a while; but then they'd become too flexible causing the problems you mentioned.
-
i like it when you get one of these saws in, and the filter has been passing for a while with no scoring on the intake side of the piston. nothing wrong with the saw except that big pile 'o' sawdust in the case ;D
i can't remember how many i've had to stuff a rag down in there and give the crank a turn to scoop up that mess :D
at least it comes out without scattering and fouling up the bearings. i guess thats what the oil is for, keeping the dust sticking to itself.
-
well, the clutch shoes and spring are in, now i need to order the oiler line and pump gear. the pump gear was (WAS) fine, until i misplaced it :o of course, i cleaned up the shop yesterday before i noticed it was mia. ;D
-
OOOOOOOOOOOH KAAAAAAAAY! time to revive this thread! ;D
the bottom end is all back together, new bearings and seals, cuz i had them, new oiler, line and gear.
i ended up ordering the 51/55 nwp top end from bailey's for it instead of tearing a good saw apart for it's top.
the quality seems to be pretty good on this kit. the combustion and squish area look as though they machined it, the nickasil does go all the way up. however, the honing stops just a little short of going right to the top. i verified this with my trusty dental mirror, and fingernail ;D the ports are good and even, the beveling is a little uneven, which may make the ports look slightly out. the casting lines in the port are minimal and will clean up very easy. the intake and exhaust seem to be a little narrow though. no biggie.
this one's also a closed port.
(http://i54.tinypic.com/9k84r5.jpg)
(http://i53.tinypic.com/wlsikn.jpg)
(http://i53.tinypic.com/2wqe9z4.jpg)
(http://i54.tinypic.com/21kch0x.jpg)
(http://i52.tinypic.com/2yy5vdv.jpg)
also ordered a new clutch for the saw as i needed the other one for a different project. :)
i'm going to run it as is for a while to see how it runs stock. then i'll start opening things up to see how good it can be.
-
What bore was that nwp baileys kit? Side pic of the piston. pleeesse
-
So, when did Bailey's start selling closed port 55 kits?
-
;D sorry cut, i don't have a pic of the piston yet ;D i'll git one to you on monday (going away for the weekend) ;D and of course, can't remember if it's windowed or not ::) it was late when i got home last night :) did notice it was good looking quality though. still moly coated.
no idea when they started to sell this one, i ordered it about 3 weeks ago. figured it would be the same old open port design. still a 46mm bore.
i'm a gonna try to get this saw back together on sunday when i get back, i would like to see where it sits with the compression, squish, timing etc..
-
OOOOOOOOOOOH KAAAAAAAAY! time to revive this thread! ;D
the bottom end is all back together, new bearings and seals, cuz i had them, new oiler, line and gear.
i ended up ordering the 51/55 nwp top end from bailey's for it instead of tearing a good saw apart for it's top.
the quality seems to be pretty good on this kit. the combustion and squish area look as though they machined it, the nickasil does go all the way up. however, the honing stops just a little short of going right to the top. i verified this with my trusty dental mirror, and fingernail ;D the ports are good and even, the beveling is a little uneven, which may make the ports look slightly out. the casting lines in the port are minimal and will clean up very easy. the intake and exhaust seem to be a little narrow though. no biggie.
this one's also a closed port.
(http://i54.tinypic.com/9k84r5.jpg)
(http://i53.tinypic.com/wlsikn.jpg)
(http://i53.tinypic.com/2wqe9z4.jpg)
(http://i54.tinypic.com/21kch0x.jpg)
(http://i52.tinypic.com/2yy5vdv.jpg)
also ordered a new clutch for the saw as i needed the other one for a different project. :)
i'm going to run it as is for a while to see how it runs stock. then i'll start opening things up to see how good it can be.
Okay........so I'm needing a P&C for a 55. Everyone has told me all A/M kits are open port, is the one posted readily available ??
-
Okay........so I'm needing a P&C for a 55. Everyone has told me all A/M kits are open port, is the one posted readily available ??
as far as i know. i ordered it right from bailey's. i noticed somebody else on a.s. ordered and recieved the same cylinder and piston. though i can't remember who. was part of a husky 51/55 rebuild from a few months ago if i remember that correctly ;D
cut: in my first pic, you can see the piston in the backround. it doesn't look to be windowed. if that helps ;)
are the partner 5000 pistons windowed?
-
Okay........so I'm needing a P&C for a 55. Everyone has told me all A/M kits are open port, is the one posted readily available ??
as far as i know. i ordered it right from bailey's. i noticed somebody else on a.s. ordered and recieved the same cylinder and piston. though i can't remember who. was part of a husky 51/55 rebuild from a few months ago if i remember that correctly ;D
cut: in my first pic, you can see the piston in the backround. it doesn't look to be windowed. if that helps ;)
are the partner 5000 pistons windowed?
With a little creative mill work I'm sure that could be changed ;D
-
oh yeah it could be machined :)
here some better pics of the piston:
(http://i56.tinypic.com/90dmko.jpg)
(http://i54.tinypic.com/2uo53iv.jpg)
(http://i52.tinypic.com/2w74dox.jpg)
put it together last night and put about a half tank through it. we'll see how things go.
the squish is 37thou on the exh. side and 42-43thou on the intake side. no gasket. i haven't taken the comp yet, but feels a little on the low side, but hey, only a half a tank so far. maybe it will come up. seems to pull ok.
-
I just ordered one on Fri., I'm thinking .020 sq., pop-up + windows, the usual int. & ex. widening too .
-
oh theres room for widening ;D the exhaust is just a hair wider than stock, as is the intake. the transfers look to be big, however looking at the stock cylinder, they are basicly the same size as the open port. you will need to do some milling to get the squish down if your cylinder ends up being the same as mine. i'm going to let this saw run for a while to see what kind of power comes back before i tear into it again. :)
-
Thanks for pic of piston. You said 46mm right.
Here is a 46mm type 1 poulan pro 325 46mm.
-
yup 46mm. you have anymore of them 325 pistons? ;D or are they still available?
i can see the "stock" piston with this set being a limiting factor for flow. :)
would also be a time saver when it comes time to reopen this saw.
-
I traded the one in the pic for a box of 490 and 5000 parts. Only one I have left is in my 325. PP325 pistons are still sold new. Just make sure type 1, type 2 was open port and with solid piston (from one I saw from Canada). I never took the chance and ordered the type 2 part number to see what I would get here.
-
pp325 type 1 :) imma going to go lookinf for that riiiiiiiight now ;D it'll be good to have on hand when the time comes. it'll save a bunch of time later. :)
-
pp325 type 1 :) imma going to go lookinf for that riiiiiiiight now ;D it'll be good to have on hand when the time comes. it'll save a bunch of time later. :)
Let us know where to get one here ;)
-
as soon as i find out :) i'm going to try the local poulan dealer (all weathers) to see if he can find anything. i've had very good success with tham before :)
hey cut, is there a part number for that piston?
all i can find is: 503 538 601 does this sound right? can't find anything pertaining to type 1 or 2..... :)
just found it's a type 2.
-
I've got the part number somewhere for type 1. Now finding it will be another thing. The part number with the 601 on the end is the newer replacement piston.
-
I've got the part number somewhere for type 1. Now finding it will be another thing. The part number with the 601 on the end is the newer replacement piston.
get finding it ;D don't get my hopes up and leave me hanging ;D inquiring minds want to know :D
we know where you live, we'll come get you, turn you upside down and shake you until your pockets are empty ;D
your wife said it was ok. so long as she gets any money that falls out ;)
-
Well on a happy note while looking for the sticker that came off the poulan 325 piston box. I found my new control module and wiring pigtail I have been looking for and the partner 5000 piston sticker off a NOS piston box.
The hunt continues. :P
-
wooooweeee! after 2 tanks this thing all of a sudden woke up. big!
well thats no totally true ::) stupid me, tuning it by ear, wanting it to be a little on the rich side, left alot on the table :D had it out yesterday and it would just bog down and stop pulling the chain, gutless. pointed the tac at it and found it to be running a bit richer than i wanted. 8600rpm rich. sheesh! my ears are either trying to screw me up or i just plain can't hear anymore ;D
turned it up to a little over 11000rpm and wow! it really does pull pretty good. easily as good as it did with the old piston slapping topend that was on it. now, that might not sound like much, but it did pull pretty good for an old worn out saw. and this thing has a ways to go before i throw more rpm at it. set at a bit over 11000rpm (bouncing between 11050-11110 or so), it will hold just a hair over 8000rpm in the wood. 16" bar/chain fully burried, old crappy chain :D
now i can't wait to give it a bit more.....
so far so good! we'll see how she holds up. 8)
case, did your set show up yet? ;D ;D ;D
i knows it didn't! but i can't help teasing ;) stupid canada post!
-
case, did your set show up yet? ;D ;D ;D
i knows it didn't! but i can't help teasing ;) stupid canada post!
Nope no show yet. There was another part on B.O. so that held things up.
-
hey cut, is there a part number for that piston?
all i can find is: 503 538 601 does this sound right? can't find anything pertaining to type 1 or 2..... :)
just found it's a type 2.
I hate to be the bearer of bad news for you.
But I did find the PP325 type 1 piston sticker today when I was needing my service manual for reading up on the heated handles. Found in between pages. ;D
The sticker on the piston box for PP325 type 1 states, Partner made in Germany 503 53 86-01 same number that is being used on the type 2 piston sold now days. :'( :'(
-
This is what you need. ;) closed port 50,51,55 (http://www.baileysonline.com/itemdetail.asp?item=HVP+503+97+18+71&catID=#tab1)
-
yeah the piston would be nice. however, this combo seems to be waking up pretty good so far. maybe the piston from that kit might be in order, but i'll be grinding this piston i have to see what kind of improvments i can get from it first. we'll see.
just at tank 5 now and it's holding a pretty strong 8600ish rpm in the wood. i'll wait to see what it's like at around the tank 10 and maybe i'll get time away from work to pull the piston and do a little hacking ;D
-
This is what you need. ;) closed port 50,51,55 (http://www.baileysonline.com/itemdetail.asp?item=HVP+503+97+18+71&catID=#tab1)
Problem with that link.... The ad lists the kit with a closed port part number but they claim it is 46mm, all the closed port cylinders were 45mm. I would contact Baileys directly to make sure it is in fact the closed port 45mm kit.
The slight gain that a closed port will give is not worth spending $200 on a new top end.
-
This is what you need. ;) closed port 50,51,55 (http://www.baileysonline.com/itemdetail.asp?item=HVP+503+97+18+71&catID=#tab1)
Problem with that link.... The ad lists the kit with a closed port part number but they claim it is 46mm, all the closed port cylinders were 45mm. I would contact Baileys directly to make sure it is in fact the closed port 45mm kit.
The slight gain that a closed port will give is not worth spending $200 on a new top end.
and so far i can't see the any way that kit would make more power than the one i have already. even with the full circle piston, this saw is becoming a pretty good runner. it makes pretty good torque. i'm going to try to get a good few more tanks through it this week and then take another comp test to see if it's come up any. it was sitting around 135 ish just after the first tank of gas. i think after the 8th or 9th tank i'll be pulling it apart to do a little widening here and there :)
-
i'm going to try to get a good few more tanks through it this week and then take another comp test to see if it's come up any. it was sitting around 135 ish just after the first tank of gas. i think after the 8th or 9th tank i'll be pulling it apart to do a little widening here and there :)
You show more patience than I , I got my kit early last week & will be doing my widening of things & tightening the squish from the get-go. :o
-
You show more patience than I , I got my kit early last week & will be doing my widening of things & tightening the squish from the get-go.
;D patience or time restricted ;D i'm so freaking busy at work i hardly remember what my shop looks like :D
whats a piston?
do huskies have muffler bearings? ;D
i hope to get a couple of weeks vacation off at the end of september so i can catch up on a few projects. thank gawd i have all the home stuff done so i can do a few things that i want to do. not stuff i have to do.
still have to throw another poulan 3400 together for a friend, i actually get to use the lathe at work today to shave the bottom of the cylinder for it.
i hope the 12thou run out on it doesn't affect anything :o (work inside joke ;D).
i've used it before and it is a good little lathe and is very accurate.
so how does the cylinder that you recieved look? pretty good?
-
OH YEAH, get some pics up after your done chipping away at that jug :)
-
Yes, the cyl. looks OK. AS I may have said, it looks as though they just "bridged" the open port cyl. to make it closed. I am going to put a timing wheel on it & see what I get. A pop up may appear on the piston too ;) Not totally happy with the plating at the top of the cyl. I'll have to measure things up to see if a pop up is doable.
-
yea i know what you mean about the 'bridge' in the transfer port :) also seems a little thin. but i've seen thinner on oem cylinders. i'm very sure it won't be a problem. it may very well be that the consistancy from one kit to the next is still a little off. i was very happy with the platting on mine, it goes all the way to the top and is honed very well. they only missed about 1/16'th at the top while honing.
check your squish. mine was off from one side to the other.
-
well, off to waste another 5 or 6 tanks throught this thing. friend has a few cords needed to be cut ;D
-
well i'm off for a week! 8) i'll be tearing into the saw and will be removing some aluminum from them holes in thar ;D no timing changes, just a big old widening. i'll be taking some pics along the way if my cmera doesn't decide to fail. might try that other carb too......
stay tuned, 'cause if you don't you'll sieze your engine! :D
-
HAAAAAAY! CASE! wheres the pics? ;D
-
I'll be watching ;)
-
I'll be watching ;)
PERVERT! :o ;D
-
I'll be watching ;)
PERVERT! :o ;D
You aint right :-X ;D
-
>:( welll, nothing got done this time around. too damned sick >:( i haven't had a cold like this in a long time.
got to feeling it coming on sept 27th, bed riddin until oct 4th. ::) my head is still packed full and my chest is sore from all the coughing.
i did getthe muffler modded a couple of days ago, right before i had to go back to work. 8)
i'll be tearing into this saw on the next weekend i have off. if i don't contract something else ;)
STUPID COLD SEASON!
who invented it? ;D
-
here's the muffler: not much to see :D
(http://i55.tinypic.com/fnaamv.jpg)
(http://i55.tinypic.com/53pjwh.jpg)
you might be able to see where the original outlet was melting the chainbrake ;D
the outlet is about twice as large as the original opening.
now i need time to do some tuning.
-
well, i went and dunnit. :) no port job for this saw >:(
i sold it last night ;D
guy came over and offered me $200 plus his jonny 520 that i've been taking care of for the past few years ;)
guess i can't complain, the jonsereds is very clean, well cared for and runs perfect. nice little saw.
i'll get pics up in the jonsered forum after the weekend 8) ;D
-
I got a husky 50 brought to me today to work on. Looks like it has several issues. One was the starter pawls were gummed up and not engaging when the rope was pulled. Second the fuel line was rotten. Third I cannot get it to supply fuel to the cylinder. I will get a carb kit and try that. Since the fuel line was gone there is a good chance the diaphragm is bad also. I will put up a pic when I get it back together. Looks like a nice little saw. Any thing special I should know about this model?
-
Not much differece than 51-55. Can't remember YM but the first ones had a smaller crankcase volume and diff bolt pattern on cyl.
Shep
-
Not much differece than 51-55. Can't remember YM but the first ones had a smaller crankcase volume and diff bolt pattern on cyl.
Shep
it was just the very last ones (called 50 Special) that had the same bolt pattern as the 51/55, and shared the 45mm top end with the 51.
-
If you have it down check the rubber intake part and impulse grommet.
-
I was able to find a carb kit local here so I put it in and all is good.
A couple of pics.
The saw did not look like it has had a lot of use. The original bar on it and a little cleaning up to make it look nice. Also the muffler is very restrictive on these. I did not modify anything on it but I know opening up that muffler would improve it a lot.
-
300th 1989 model.
-
300th 1989 model.
I saw that sticker on there but did not know what it meant. Now I know.
-
That's a nice looking saw!
What is the serial number?
-
That's a nice looking saw!
What is the serial number?
Ser # 9140487
-
That's a nice looking saw!
What is the serial number?
Ser # 9140487
Made 1989 week 14 then, less than 5 weeks before they became the 51cc 50 Special.
-
That's a nice looking saw!
What is the serial number?
Ser # 9140487
Made 1989 week 14 then, less than 5 weeks before they became the 51cc 50 Special.
Thanks for the info.
-
Picked up one of these 50's myself, recently. I threw a 46mm p/c at it and put the 55 carb and associated parts in it (much better choke system). I notched the cover for the choke and made it look factory. It has 160 psi compression and runs great! Nice saw, for sure.
https://www.dropbox.com/sc/k1mtfzzz6liwoar/DWCe-wvncH (https://www.dropbox.com/sc/k1mtfzzz6liwoar/DWCe-wvncH)
https://www.dropbox.com/sc/i8299g86g20ibko/o1oB3WsXWs (https://www.dropbox.com/sc/i8299g86g20ibko/o1oB3WsXWs)
-
Picked up one of these 50's myself, recently. I threw a 46mm p/c at it and put the 55 carb and associated parts in it (much better choke system). I notched the cover for the choke and made it look factory. It has 160 psi compression and runs great! Nice saw, for sure.
(https://www.dropbox.com/sc/k1mtfzzz6liwoar/DWCe-wvncH)
(https://www.dropbox.com/sc/i8299g86g20ibko/o1oB3WsXWs)
Yea that choke is kind of funky but it does work. Did you modify the muffler any, I found it to be really restrictive.
-
I had the muffler apart and was checking it out to do a mod on it. I wasn't sure how far to take it. Did you cut the flange/flap off under the deflector/cover? Open up the 4 holes a little larger? The posted pictures are 'pre-mod'. ;)
-
I did not modify the muffler because the saw was not mine, but if I had a choice I would have modded it.
-
I want to know if you can adjust the chain oiler on this saw.
-
husqvarna 50 IPL http://www.husqvarna.com/ddoc/husi/husi1984_aaaa/husi1984_aaaa_i8400014_.pdf
My WAG
The oiler looks like the non adjustable type in the IPL.
But looks a lot like the ones in the partner 500 that came in both ways. Might be able to swap parts in to make adjustable.
-
Just thought of something. if there isnt a place in the crankcase for it to be adjusted like the 500 etc. it prob wont matter anyways.
(http://i959.photobucket.com/albums/ae72/arrowheadpioneer/IMG_3563.jpg)
-
Looking at this husqvarna 50 crankcase. It wont work anyways. No place for it. So you are stuck with no adjustable style.
(http://cdn.shopify.com/s/files/1/0312/7533/products/P1020389.jpg?v=1389047628)
-
husqvarna 50 IPL http://www.husqvarna.com/ddoc/husi/husi1984_aaaa/husi1984_aaaa_i8400014_.pdf
trooney is sending me a husqvarna 50 rancher PHO that he thinks my dad will be able to start. Going to set it up like dad poulan 3300 with 325 and see if he can start this saw. The poulan 3300 just to hard for him anymore.
Just reading up on them and found the IPL here. Remember something about the early husky 50 and the cylinder bolt pattern being smaller too, if I recall right.
-
TTT looking for info
-
husqvarna 50 51 55 service manual workshop manual https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=14&ved=0ahUKEwiJjtXOl5bYAhUJQSYKHefxA3wQFghoMA0&url=http%3A%2F%2Fwww.mymowerparts.com%2Fpdf%2FHusqvarna-Service-Repair-Manuals%2FW9200002.pdf&usg=AOvVaw2RIHzPpdC2ayl1h7SfLXOi
Know there is something on the smaller bolt pattern on early 50. Least my memory thinks so.
-
Some dealers used to put the 5000 top on a husky 50 to make what is called a 50 Magnum.
(Back in the 80's we were selling a Husqvarna 50 Magnum. This saw was created in Charlotte, NC by the Husqvarna Distributor owned by Jim Thompson, The guy that made Husqvarna as far as I'm concerned. They brought in Partner 5000 cylinders and pistons and put them on 50 Rancher (the old white top) saws. These saws were awesome. The first one I received we got out of the box on Thursday and blew the competition out of the water on Saturday at the Races. Back then we had Chainsaw competition's on monthly bases. Husqvarna Sweden made them stop building them in the states. We built some ourselves after they stopped. It was a simple bolt on with no modifying at all. Someday I'll tell you more about the old Husqvarna distributors that made Huqvarna what they are today.)
Maybe I am wrong on the early smaller bolt pattern on early 50's stuck in my memory. Because of reading this again.
-
The husky 50 set up with 72dl 325 for dad and a sign I got for myself.
-
That is the model w/ smaller bolt pattern IIRC .
Shep
-
That is the model w/ smaller bolt pattern IIRC .
Shep
I know I posted a link with the pic too. But never thought I would need to go back to it.
It is here somewhere. Just cant remember anymore.
-
@Roanoker494 said
I have worked with many 50-55 series Husqvarna saws and have become very familiar with the parts interchangeability. In my experience 99% of all parts are compatible between the models 51 and 55, not 100% because some of the 51's did not have the air injection. The model 50 made several changes over the years and not all parts are compatible from all years. Before 1987 the model 50 had a smaller opening in the crankcase for the piston/cylinder so modifications are required to install a 51/55 top end onto the pre 87 model, though no mods are required to install the pre 87 top end onto a 51/55. The 50 also has the different choke system which, in my opinion, is inferior to the 51/55 setup. There was also some changes between the 50 Ranchers, commonly found with a white top cover, and the later 50's, commonly found with a grey or black top cover. The major differences were cosmetic with the recoil cover and chain brake assembly, you can not use the brake handle/flag from a 50 Rancher on the later style brake cover but you could swap the entire assembly without issue. I have often heard about there being different bolt patterns on the cylinders but I have yet to ever see it myself with having worked on saws made from 1983 through early 2000.
Parts numbers for the closed port
Complete top end 503971871
Piston alone 503168771
-
Husqvarna 50 service bulletin
MODEL: 50 SPECIAL REPLACES 50 RANCHER FROM SERIAL NUMBER 9190006
The differences between the model 50 S and 50 R are among other things that the displacement is increased from 49 cm3 to 51 cm3 and that the SA-silencer is replaced. Due to the changes above, the 50 Special has gone through a for each country new specific testing procedure. This means that no 51 cm3 cylinders should be mounted on saws with lower serial number than 9190006.
The 51 cm3 cylinder base does not fit the crankcases of older 50 R models.
•
•
•
•
The 51 cm3 cylinder base has the outer diameter of approx. 49,7 mm (the outer diameter of the piston = 45 mm).
The 49 cm3 cylinder base has the outer diameter of approx. 47,9 mm (the outer diameter of the piston = 44 mm)
The inner diameter of the new crankcase is approx. 50,5 mm (this crankcase is identified with the improvement code F)
The inner diameter on the old crankcase is approx. 48,5 mm
pic
-
Another SB
From May 1989, serial number 9190006, the “50 Rancher” is replaced by the “50 Special”. The introduction of the new model means three big news:
1.
2.
3.
New cylinder/piston, in order to give the saw higher efficiency over a wider rpm register.
New chain brake equipped with a so called knee link. The new brake is easier to use and does not release involuntary.
New SA-silencer, in order to receive a more effective spark arrestor system.
New version numbers
967 05 13 replaces 967 05 14 replaces 967 05 15 replaces 967 05 52 replaces
1. Cylinder/Piston
Technical specification
Displacement cm3/cu. inch Bore mm Stroke mm Power output kW/Hp Weight, saw body kg/lbs.
967 05 03 (SA-silencer) 967 05 04 (Standard-silencer) 967 05 05 (France) 967 05 51 (Australia)
50 Special
51/3.1 45 32 2.2/3.0 5.3/1 1.6
50 Rancher
49/3.0 44 32 2.2/3.0 5.3/1 1.6
-
Another SB on husqvarna 40 50 flywheel
FLYWHEEL
We have into our production introduced a flywheel with 2 keyways.
The
For For
keyways are marked 4 and 5 respectively.
Husqvarna 40 keyway marked 4 is used. Husqvarna 50 keyway marked 5 is used.
For spare parts ordering the following part numbers are valid:
Flywheel compl. Husqvarna 40 506 03 13-04 Flywheel compl. Husqvarna 50 506 03 13-01
3: X 85.103-96 8.4 3-85
-
That is the model w/ smaller bolt pattern IIRC .
Shep
I know I posted a link with the pic too. But never thought I would need to go back to it.
It is here somewhere. Just cant remember anymore.
All here now again where I know where it is for now anyways. ;) :D :D :D :D :D :P
-
Husqvarna 50 rancher
Husqvarna 50 special
Just saving pics of the husky 50 white top
-
I just had a customer last week bring his Husqvarna 50 in for some bar chain maintenance. Sold him some old style 25RM chain loops too.
This 50 was a black top and had the 400? year anniversary decal on the top cover so I guess around a 1988 model.
Nice little saw, had a weird choke control though. Wish I took pictures before I let it go , was near mint condition.
-
This was one posted back in 2013 here. It had the sticker for 300th 1989 model.
Ser # 9140487. According to Sawtroll it was right before they became the 50 special.
http://chainsawrepair.createaforum.com/husqvarna/husky-50/
-
Nice memory Roger, I didnt recall a 50 thread.
Merged them both now.
-
This was one posted back in 2013 here. It had the sticker for 300th 1989 model.
Ser # 9140487. According to Sawtroll it was right before they became the 50 special.
http://chainsawrepair.createaforum.com/husqvarna/husky-50/
That was a good read Roger.
I checked SawTrolls profile and it says he was last active in January. Miss his posts, hope he's doing ok.
-
So I have a Husky 50 special that I acquired some time ago and have decided to get it going. It is in really nice shape except the piston and cylinder are scored pretty bad. From what I understand the 50 special piston is 45mm. The 51 piston is 45mm. The 55 piston is 46mm.
Will any of these cylinders and pistons bolt right on to a 50 special. I will get a pic of the saw tomorrow.
-
So I was just comparing the part numbers for the complete cylinder and piston kit and the 50 special and the 51 both have the same part number.
So I guess the 51 piston and cylinder will bolt onto the 50 special. Anyone else have any information regarding this let me know.
-
As far I remember they all fit each other except for the early white top 50.
Partner 500 5000 jonsered 490 590 etc fit too. I would lay a guess the poulan 325 partner 5500 would too 46mm
-
Here is a couple of Pics. Husqvarna 50 special.
-
Thats a nice one . Take care of the recoil decal for the collector types.
-
The early and pre-special 50's were actually 44mm. Both white and gray tops. When the 50 became the 50 Special there was a crankcase change to accept the 45 and 46 mm top ends. There is a service bulletin on this that I can check later for actual dates. The switch from the white to gray top cover preceded the case change so there are gray top saws with the early case out there. The early cases won't accept the 45 or 46 mm top ends. The hole in the case just isn't big enough. (they will accept closed port Jonny 490 top ends if you have one laying around)
-
Ok Thanks Spike.
-
Serial number break is 9190006 for the case change. Week 19; 1989. You never know with old saws that have had parts swapped over the years and the decals send you off in the wrong direction. Bet we've all been fooled that way at one time or another.
If you end up with a case with no ID plate, the SB gives us some measurements for the inner diameter of the case.
Early: 48.5mm
Later: 50.5mm
Outer diameter of the cylinder base:
44mm jugs: 47.9mm
45/46mm jugs: 49.7mm
-
Thanks spike.
I think I got that SB link in thread.
See if I still have it on HD. Found pic.
-
I found a cylinder made for the Husqvarna 50, 51 with a 45mm bore. I checked it last night and it is a proper fit. So a little modifying to the cylinder and then will start to put it together. I also have new crank seals and will replace them too. The intake area looked ok and the impulse looked ok. But it sure was run lean and was scored pretty bad. Maybe it got straight gassed.
-
So I got the Husky 50 special together today and started it. Runs good. I put it together without a base gasket which means I had to relocate the impulse hole in the cylinder. I think the impulse works better now than when stock. I did find a used OEM cylinder on ebay for a Husky 51 45mm for pretty cheap and bought it. The OEM does not have a decompression valve and the one I have on there now does. I will modify the impulse the same way now that I know it works so good. I think I will also widen the ports to pep this up some. I have had this saw for 4 years just sitting in the garage and I did not even have to touch the carb to make it run. So far I like it and will be even better with the OEM cylinder.
-
The OEM cylinder that was advertised for a Husky 51 and 45mm turned out to be the exact same cylinder that was on the 50 special.
The porting is a lot nicer on the OEM and the transfer ports are a lot better looking. So I put it on today. Once the Yamabond dries good I will fire it up tomorrow. I think the saw will run better with the OEM cylinder on it.
-
So I have been using the Husky 50 special some and it tuned right where I want it. I put a tach on it and got 10,500 out of it with the bar and chain.
I also took a picture of the writing on the cylinder because it is exactly the same as the Husky 51 I bought.
I was looking at the old cylinder and I think I am going to try and clean it up some and might still be good enough to use.
-
Looking at the spec sheet in the stickys here. 12,500 is max stock out of cut
-
Looking at the spec sheet in the stickys here. 12,500 is max stock out of cut
I guess I could tune it for some higher RPM's but I think it would start to get lean by then. Maybe with the different cylinder and new piston and ring it could use some breaking in.
-
I'm confused; are both cylinders Mahle or was the one on the saw an aftermarket item? Decos tended to come and go on this family of saws. Seemed kind of random to me. The last remaining OEM cylinder is the 46mm which is made by Husky in Sweden. It does have a deco. There were some Gilardoni jugs in the mix along with the closed port 55's that were Mahles, (I think).
-
I'm confused; are both cylinders Mahle or was the one on the saw an aftermarket item? Decos tended to come and go on this family of saws. Seemed kind of random to me. The last remaining OEM cylinder is the 46mm which is made by Husky in Sweden. It does have a deco. There were some Gilardoni jugs in the mix along with the closed port 55's that were Mahles, (I think).
I had a cheapo after market cylinder on the saw and then I found a used OEM cylinder on ebay from a Husq 51. That cylinder turned out to be an exact match to the original one on my Husq 50 special. That is the cylinder in the picture. I then took off the aftermarket cylinder and put the OEM one on the saw. The saw did run better with the OEM.
-
The Husqvarna 50 special came a with a two shoe clutch that seemed to slip easily. So I found a 3 shoe clutch on ebay for a 51 or 55 that fit. What a world of difference. I can actually bear down some on the saw now.
-
Husqvarna 50 Special 300th 1989. Seen better days. But not scored, was surprised it wasnt.
Priced it for $60 SOLD
-
I have taken the 50 special I rebuilt up to the mountains with me now 3 times and use it for limbing which is where all the cutting really happens. Works out good because of the weight and it always starts easy. Important when you have been cutting all day.