Author Topic: Husqvarna 50  (Read 8295 times)

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Offline Cut4fun .

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Re: husky 50 300th anniversary
« Reply #80 on: December 17, 2017, 09:32:17 pm »
TTT looking for info

Offline Cut4fun .

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Re: husky 50 300th anniversary
« Reply #81 on: December 19, 2017, 08:36:29 am »

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Re: husky 50 300th anniversary
« Reply #82 on: December 19, 2017, 08:38:53 am »
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.   

Offline Cut4fun .

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Re: husky 50 300th anniversary
« Reply #83 on: December 19, 2017, 04:26:12 pm »
The husky 50 set up with 72dl 325 for dad and a sign I got for myself.


Offline farmboy

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Re: husky 50 300th anniversary
« Reply #84 on: December 19, 2017, 10:30:49 pm »
That is the model w/ smaller bolt pattern IIRC .
Shep
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Re: husky 50 300th anniversary
« Reply #85 on: December 19, 2017, 10:35:06 pm »
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.

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Re: husky 50 300th anniversary
« Reply #86 on: December 20, 2017, 12:40:23 pm »
@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


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Re: husky 50 300th anniversary
« Reply #87 on: December 20, 2017, 12:41:30 pm »
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


 

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Re: husky 50 300th anniversary
« Reply #88 on: December 20, 2017, 12:52:43 pm »
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

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Re: husky 50 300th anniversary
« Reply #89 on: December 20, 2017, 12:54:13 pm »
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

 

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